converting coredata files
Hi, I've got an app that I write for myself (I am the only user). I made a mistake when creating the datamodel in xcode 3 (targeting 10.5), I used description as an attribute name. I have now upgraded and the current xcodes do not like the project file at all. I've got quite a lot of data in this app that I really don't want to loose. It uses an sql store. Somehow I need to create a new app for 10.8 that will use the old file, or find a way to convert the old file to work with a new app. The new app will be almost the same but only have the current datamodel. Can I create an intermediate datamodel in xcode 3 that removes the error from the file, and create an app. Open the file with this version to upgrade it to the current datamodel. Then create an xcode project without the old datamodels and use that? Does this make sense? Many Thanks, Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Image Colours
Hi, I've got an app that is a custom app for me and my home business, it's not something commercial. It's a core data app and some of the entities have images associated with them. The images themselves are stored separately, and the coredata datastore stores the reference to them. What I'd like to do if its possible is to analyse the images to find the most dominant colours, then find images with similar colours in them. I thought I would do this by analysing each image as it is saved and calculate the most common pixel colours, probably by analysing each pixel in the image? and saving the most common colours, perhaps 10 colours. Then I can see what other images have the same colour(s) in. Does this sound possible at all? I'm a self taught hobby programmer, not an expert at all. I appreciate any advice or pointers, Many Thanks, Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Image Colours
Thanks everyone for your help, it has certainly given me ideas. The images I'll be using are mainly generated web ready images, which I think will make it easier than photos. I also don't need exact matches, so reducing the colour resolution would probably be a good idea, or perhaps if I use hsb values I could just look at the hue as this is the more useful value. I'll be looking for images that coordinate together so different shades etc of the same hue would want to be looked at as well. I'll 'just' need to work out how to convert the rgb images to hsb, Thank You all, On 3 Mar 2012, at 20:35, Jens Alfke j...@mooseyard.com wrote: On Mar 3, 2012, at 5:17 AM, Amy Heavey wrote: I thought I would do this by analysing each image as it is saved and calculate the most common pixel colours, probably by analysing each pixel in the image? and saving the most common colours, perhaps 10 colours. Then I can see what other images have the same colour(s) in. The trouble is that images tend to have subtle gradations of color, and even an area that looks solid often has adjoining pixels that are almost but not quite the same color. So you have to use approximations or averaging. I haven’t done this myself, but one approach that might work is to lower the color resolution. Say you divide the raw pixel components by 16 so they’re only in the range 0…15 instead of 0…255. That way nearby colors will clump together into the same value. It also gives you only 4096 possible color values to count occurrences of, instead of 24 million. It probably also makes a difference what color space you use. My hunch is that HSB or HSV will work better than RGB. Experiment! —Jens ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Frameworks (ConnectionKit)
Hi, I'd like to be able to use my mac app to upload an image to a server. From googling it seems the best way to achieve this is using the ConnectionKit framework to upload it via FTP. I've downloaded the framework, but Im at a loss, the examples included don't build, and looking at the hillegass book there should be a .framework file for me to link to but I can't find one. I also can't find any documentation about how to use this. Can anyone point me in the right direction? Either for using ConnectionKit or how else to simply ftp a file to a server? Many Thanks Amy Heavey Willow Tree Crafts www.willowtreecrafts.co.uk ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: selected image in webview
Thanks, It is for Mac OS (coredata app), but all the documentation seems to refer to Javascript? I've got a webView *manWeb, and I use this to set the initial page to display; NSString *manWebString = [[Manufacturers selection] valueForKey:@manufacturerNewWeb]; [[manWeb mainFrame] loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:manWebString]]]; Then I navigate through the pages by clicking on the links on the pages etc. This isn't meant to be a full browser experience, I just want to access my suppliers sites for quick reference. I'm still struggling to find a way to select an image within the page. I'd like to simply click on an image within the webview, then a button in my UI to process it. I'll basically be downloading it, and saving the details to my app. Then I have more relationships to set etc, but I just can't work out how to know what image has been selected? I'd appreciate any help, Many Thanks Amy On 5 Jul 2011, at 5:07PM, Jens Alfke wrote: On Jul 4, 2011, at 10:55 PM, Amy Heavey wrote: Is there a way to get the selected item in a webview? I've got a webview in my app, and I'd like to select an image and download it. On Mac OS you can use the DOM APIs. On iOS I think you have to run JavaScript on the page — I don’t remember the exact method name, but there’s a method you pass a string containing JavaScript and it evaluates it. —Jens___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/home%40willowtreecrafts.co.uk This email sent to h...@willowtreecrafts.co.uk ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
selected image in webview
Hi, Is there a way to get the selected item in a webview? I've got a webview in my app, and I'd like to select an image and download it. Many Thanks Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
attribute is an array?
Hi, I'm trying to acccess a decimal attribute of an entity, and I can't work out why it's not working. I'm using the code below; NSString *price = [[product valueForKey:@kitFee] stringValue]; and I get this error: 2011-06-21 12:43:34.666 ishop[30901:10b] *** -[NSCFArray stringValue]: unrecognized selector sent to instance 0xe74f030 kitFee is a decimal attribute, and I can successfully get string attributes with this code, NSString *productName = [product valueForKey:@kitName]; Does the error message mean that it's getting an array for kitFee when it should be a value? I've cleaned and rebuilt, and it's sticking at this line, but I just can't see my error? I'd appreciate any help, Many Thanks Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
OS + iOS best practice
I hope this appropriate for this list, if not please accept my apologies. I've got a fairly basic core data app that I've written for personal use on my iMac. I'd like to have an iPad version as it would be very useful to have whilst I was mobile. (It's basically a customer/product database). Is there a best way to manage sharing the data between an OS and iOS version? I assume it will be possible as long as they use the same datamodel. I was thinking maybe some kind of dropbox sync would be best as it wouldn't depend on a network connection, and I wouldn't need to use both the mac an iPad versions at the same time. I have absolutely no idea how to do this though. I know some apps have built in dropbox sync but I fear it may be beyond me as I haven't found a handy tutorial anywhere. Can anyone point me in the right direction at all? Many Thanks Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: OS + iOS best practice
Thanks, It's an app for just me really. I just prefer to work on a desktop mac when I'm in the house, and I can't carry my iMac with me :) I do find typing much easier on an actual keyboard. Maybe I should just get a keyboard for the iPad? Many Thanks Amy On 3 Jun 2011, at 7:11PM, John Joyce wrote: On Jun 3, 2011, at 1:04 PM, Amy Heavey wrote: I hope this appropriate for this list, if not please accept my apologies. I've got a fairly basic core data app that I've written for personal use on my iMac. I'd like to have an iPad version as it would be very useful to have whilst I was mobile. (It's basically a customer/product database). Is there a best way to manage sharing the data between an OS and iOS version? I assume it will be possible as long as they use the same datamodel. I was thinking maybe some kind of dropbox sync would be best as it wouldn't depend on a network connection, and I wouldn't need to use both the mac an iPad versions at the same time. I have absolutely no idea how to do this though. I know some apps have built in dropbox sync but I fear it may be beyond me as I haven't found a handy tutorial anywhere. Can anyone point me in the right direction at all? Many Thanks Amy If it's an app for multiple users to have the same data, you probably want to have a central database that client apps retrieve data from. Core data isn't really a multi-cient database. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
image rotation
Hi,
I'm trying to generate a new image that is made up of a combination of
other images.
As I iterate over the array holding the images I want to do is...
- place the componant image in the new canvas at a certain point
(150,187)
- rotate the componant image by a certain value (calculated previously)
I don't mind how the image fits in the new canvas, it doesn't have to
be completely within it.
I think I need to use NSAffineTransform?
I was using drawinrect previously for non-rotated movement.
Do I need to draw the componant image to the canvas first then rotate
it?
The code I have at the moment is
[code]
//calc rotation
double rotation = 360 / ki;
double rotateby = rotation;
//set coordinates to x,y - 150,187 to start
float x = 150;
float y = 187;
//for each image
NSEnumerator *imageLoop = [kitImages objectEnumerator];
NSString *imgPath;
while ((imgPath = [imageLoop nextObject])) {
NSImage *img = [[NSImage
alloc]initWithContentsOfFile:imgPath];
//rotate image
//apply image to view
[targetImage lockFocus];
//[img drawInRect:NSMakeRect(x,y,xb,yb)
fromRect:NSMakeRect(150,150,0,0) operation:NSCompositeCopy fraction:1];
//set new rotation
rotation = rotation+rotateby;
[/code]
I've tried looking at some of the samples, but they seem to be cover
rotating in place and resizing which is more complicated than I'm
looking for. I'm expecting to effectively have the componant images
fan out on the canvas.
If anyone could help me with the process I'd be grateful, do I have to
create a intermediary image to make the rotated image square?
Thanks,
Amy
Many Thanks
Amy Heavey
Willow Tree Crafts
www.willowtreecrafts.co.uk
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binding relationship to checkbox
Hi Everyone, I was wondering if anyone could point me in the right direction for my problem? I'm working on a core data application, and in this issue I have 2 entities, product and category. They have a many to many relationship. In my interface I want to have a list of all the categories with a checkbox column, so the checkboxes indicate if there is a relationship between the selected product and the category. It's along the lines of keywords in iPhoto, so I can set/unset the relationships using the checkboxes? This sounds to me like something that should be doable with the 'magic' of bindings, but I can't see how to do this? I do appreciate any help anyone can offer me, Many Thanks Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
array controllers and key paths
Hi, I've got 3 entities, Event, CustomerOrders and CustomerORderITems. Events has a to many relationship (eventOrders) to CustomerOrders CustomerOrders has a to many relationship (customerOrderItems) to CustomerOrderItems I'd like to be able to list all of the CustomerOrderItems for a selected event in a table. I think I need to create a new array controller (eventOrderItems) but how do I bind the content? I've tried various array/set key paths but none have worked so far. Is this possible? I've got an array controller called eventOrders which is bound to the Events.selection so I thought I could bind eventOrderItems to eventOrders.arrangedObjects keypath customerOrderItems If I try to bind the content set I get an error saying something like cannot create content set, try using content array, Cannot create NSSet from object ( ) of class NSCFArray - consider using contentArray binding instead of contentSet binding but if I try that I get another error [_NSFaultingMutableSet 0x1a0a90 addObserver:forKeyPath:options:context:] is not supported. Key path: orderItemProduct.productTitle Many Thanks Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
loop not running
I've got the following code that is almost identical to code I've got
in another app. The other app works, this one doesn't. The only
difference between the two is the variable names;
- (IBAction)addItemsToOrder:sender;{
NSObject *order;
order = [[Orders selectedObjects] objectAtIndex:0];
NSArray *newOrderProducts;
newOrderProducts = [Products selectedObjects];
NSEnumerator *loop = [newOrderProducts objectEnumerator];
NSObject *product;
NSLog(@Hello There!);
//for each selected product:
while ((product = [loop nextObject])) {
NSLog(@Hello There! in while loop);
//create new kitItem
NSManagedObject *newOrderItem = [NSEntityDescription
insertNewObjectForEntityForName:@CustomerOrderItems
inManagedObjectContext:managedObjectContext];
//link new product to order
[newOrderItem setValue:order forKey:@customerOrderRef];
//link new order item to product
[newOrderItem setValue:product forKey:@orderItemProduct];
}
}
When I run this in the app, I see the first Hello There but nothing
else in the log. There is definitely a Products order array in the
interface, and it definitely has selected objects. I have table
columns bound to the Products array so I can see they are selected.
I've got the following in my header file as well;
IBOutlet NSArrayController *Products;
But I just can't see why it's not going into the loop?
Many Thanks
Amy
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array contents and objects
I've got a core data app that has 2 entities, product and status, and a relationship between them. I'll be importing and updating some of the data in the app from csv files supplied from an outside source. The 'status' is just given as a string. There are 3 options, Low Stock, Out of Stock, and In Stock. As I import, I can create new products, and set the attributes, and I think I know how to set the relationship once the status is defined, but I need to select it first. I'm looking for something that does something like [status selectObjectWithValue:@Low Stock] or do I need to loop through the array each time. It's only a few but seems excessive to loop through it? Many Thanks Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Mapping model
I've got a data model that I want to add an attribute to (as in adding an attribute to an entity). The attribute is optional and can begin with a nil value. I've created a mapping model and it opens the old file, but I've got odd behaviour. The entity is called manufacturer and it has attributes of manufacturerName, manufacturerAbbr, and a relationship called manufacturerProducts I'm trying to add an attribute called manufacturerNewWeb. In my interface I have a table listing all my manufacturers, with the name and abbr in columns, and a section below to add new details. Now the manufacturerName and manufacturerNewWeb seem to be the same. If I change one in my interface they both change. All I have added to the interface for the new attribute is a new text box bound to the same manufacturers array controller. What (probably simple) thing have I missed? Many Thanks Amy Heavey ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Image Resolution
Hi,
I've got an app that generates composite images, so it places images
onto a single canvas and saves that as a new image. It's working fine,
but I'm struggling with the resolutions/representations issue.
The source images are not generated by us, they are from a variety of
surces, and are generally 200pixels + on each side, however sometimes
they are 72 dpi, and sometimes they are 300dpi. Even if an aimage is
450pixels square, when it is set as 300 dpi it's reduced too small
when my app reduces it it to fit a 75pixel square area.
I know this is to do with the bitmapRepresentation, but I can't work
out how to change it. If I was doing this in photoshop I'd be keeping
the actual pixel count, but changing the resolution from 300 to 72 for
these images.
Can anyone point me in the right direction? Here's the code I'm using
at the moment:
while ((imgPath = [imageLoop nextObject])) {
NSImage *img = [[NSImage alloc]initWithContentsOfFile:imgPath];
[targetImage lockFocus];
[img drawInRect:NSMakeRect(x,y,75,75) fromRect:NSMakeRect(20,20,0,0)
operation:NSCompositeCopy fraction:1];
Thanks
Amy Heavey
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confused about floats
I've got two float values (x and y) that I'm using to change the
coordinates of a drawing action that is being looped through. I can
add a value to x and it draws the next image along, but I want to test
the value of x and if it is out of bounds I want to reset it to zero
and increase y, so I get a grid of images drawn.
For some reason, even though I can do
x = x+128;
and it moves the image accross, x seems to be null so I can't test
against it, my if statement ' if (x 300){' always fails.
This must be something really simple I just can't see it this morning?
I'd appreciate any help.
Many Thanks
Amy
Full code being used:
- (IBAction)generateKitImages:(id)sender;
{
NSObject *kit;
kit = [[kits selectedObjects] objectAtIndex:0];
NSString* fileName = [[kit valueForKey:@kitName]
stringByAppendingString:@.jpg];
NSString* kitimagePath = self applicationSupportFolder]
stringByAppendingPathComponent:@images]
stringByAppendingPathComponent:@kit]
stringByAppendingPathComponent:fileName];
//NSLog(@Kit Image Path: %@, kitimagePath);
//create new image 300px square
NSImage *targetImage;
NSSize targetSize = NSMakeSize (300, 300);
targetImage = [[NSImage alloc] initWithSize:targetSize];
//select all images for kit
NSArray* kitImages = [kit
valueForKeyPath:@kitItems.kitItemProduct.productImage];
//set coordinates to x,y - 0,0 to start
float x = 0;
float y = 0;
//for each image
NSEnumerator *imageLoop = [kitImages objectEnumerator];
NSString *imgPath;
while ((imgPath = [imageLoop nextObject])) {
NSImage *img = [[NSImage alloc]initWithContentsOfFile:imgPath];
//NSLog(@Image: %@,img);
//resize to 100px high
//get original size
//NSSize *origSize;
//origSize = [img size];
//calculate scale factor
//[img setScalesWhenResized: YES];
//[img setSize: NSMakeSize (100., 100.)];
//apply image to view
[targetImage lockFocus];
[img drawInRect:NSMakeRect(x,y,100,100)
fromRect:NSMakeRect(x,y,100,100)
operation:NSCompositeCopy
fraction:1];
[targetImage unlockFocus];
//set new coordinates
x = x+100;
//if coordinates are too wide, start new row - if x300, reset x to
0 and add 100 to y
if(x 300){
x = 0;
y = y+100;
}
}
//apply kit logo to view
//apply kit date (text) to view
//save files out
//create a NSBitmapImageRep
NSBitmapImageRep *bmpImageRep = [[NSBitmapImageRep alloc]initWithData:
[targetImage TIFFRepresentation]];
//add the NSBitmapImage to the representation list of the target
[targetImage addRepresentation:bmpImageRep];
//get the data from the representation
NSData *data = [bmpImageRep representationUsingType: NSJPEGFileType
properties: nil];
//write the data to a file
[data writeToFile: kitimagePath
atomically: NO];
//link images to kit
[kit setValue:kitimagePath forKey:@kitImage];
}
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Confused about floats
I've got two float values (x and y) that I'm using to change the
coordinates of a drawing action that is being looped through. I can
add a value to x and it draws the next image along, but I want to test
the value of x and if it is out of bounds I want to reset it to zero
and increase y, so I get a grid of images drawn.
For some reason, even though I can do
x = x+128;
and it moves the image accross, x seems to be null so I can't test
against it, my if statement ' if (x 300){' always fails.
This must be something really simple I just can't see it this morning?
I'd appreciate any help.
Many Thanks
Amy
Full code being used:
//select all images for kit
NSArray* kitImages = [kit
valueForKeyPath:@kitItems.kitItemProduct.productImage];
//set coordinates to x,y - 0,0 to start
float x = 0;
float y = 0;
//for each image
NSEnumerator *imageLoop = [kitImages objectEnumerator];
NSString *imgPath;
while ((imgPath = [imageLoop nextObject])) {
NSImage *img = [[NSImage alloc]initWithContentsOfFile:imgPath];
//apply image to view
[targetImage lockFocus];
[img drawInRect:NSMakeRect(x,y,100,100)
fromRect:NSMakeRect(x,y,100,100)
operation:NSCompositeCopy
fraction:1];
[targetImage unlockFocus];
//set new coordinates
x = x+100;
//if coordinates are too wide, start new row - if x300, reset x to
0 and add 100 to y
if(x 300){
x = 0;
y = y+100;
}
}
NSBitmapImageRep *bmpImageRep = [[NSBitmapImageRep alloc]initWithData:
[targetImage TIFFRepresentation]];
[targetImage addRepresentation:bmpImageRep];
NSData *data = [bmpImageRep representationUsingType: NSJPEGFileType
properties: nil];
[data writeToFile: kitimagePath
atomically: NO];
//link images to kit
[kit setValue:kitimagePath forKey:@kitImage];
}
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Re: Confused about floats
Thanks for all the help everyone, I'll take a look at it all, and
release where I need to!
Many Thanks
Amy
On 5 Oct 2010, at 4:17PM, Matt Neuburg wrote:
On Tue, 5 Oct 2010 10:17:31 +0100, Amy Heavey a...@willowtreecrafts.co.uk
said:
//select all images for kit
NSArray* kitImages = [kit
valueForKeyPath:@kitItems.kitItemProduct.productImage];
//set coordinates to x,y - 0,0 to start
float x = 0;
float y = 0;
//for each image
NSEnumerator *imageLoop = [kitImages objectEnumerator];
NSString *imgPath;
while ((imgPath = [imageLoop nextObject])) {
The enumerator and the call to nextObject are now unnecessary; fast
enumeration has been invented. So unless you're running on an old
system
(of course, you might well be), you could say:
//for each image
for (NSString* imgPath in kitImages)
NSImage *img = [[NSImage alloc]initWithContentsOfFile:imgPath];
That's a memory leak. You are saying alloc without a balancing
release.
//apply image to view
[targetImage lockFocus];
[img drawInRect:NSMakeRect(x,y,100,100)
fromRect:NSMakeRect(x,y,100,100)
operation:NSCompositeCopy
fraction:1];
Unlikely. As soon as you add 100 to x to and y, the fromRect value
will be
a rectangle outside the image. So it will probably be blank or black
or
something. You probably want the fromRect to be
NSMakeRect(0,0,100,100),
i.e. the whole of the image is to be used as the source (assuming
that the
image is 100 by 100).
[targetImage unlockFocus];
//set new coordinates
x = x+100;
//if coordinates are too wide, start new row - if x300,
reset x
to
0 and add 100 to y
if(x 300){
x = 0;
y = y+100;
}
}
NSBitmapImageRep *bmpImageRep = [[NSBitmapImageRep
alloc]initWithData:
[targetImage TIFFRepresentation]];
That's another memory leak.
m.
--
matt neuburg, phd = m...@tidbits.com, http://www.tidbits.com/matt/
A fool + a tool + an autorelease pool = cool!
AppleScript: the Definitive Guide - Second Edition!
http://www.apeth.net/matt/default.html#applescriptthings
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Re: Confused about floats
Got it working, Part of my issue seemed to be my logic.
300 is the bounds of my target image, and I have planned it so images
fit inside this, so x would end up being 300. In a stupid moment, I
set the if statement to run if x300, which initially it wouldn't be
as it would actually equal 300. However, I didn't spot my mistake as
the NSLog inside the if statement appeared in the debugger so I
thought it was running the rest of the code inside the if statement. I
changed it to 299 and voila it worked. I did also have to (is the
term cast?) the 299 to a float.
I'm googling Fast Enumeration, but I'm compiling for 10.5,
So I'm left with the following which works as intended:
//select all images for kit
NSArray* kitImages = [kit
valueForKeyPath:@kitItems.kitItemProduct.productImage];
//set coordinates to x,y - 0,0 to start
float x = 0;
float y = 75;
//for each image
NSEnumerator *imageLoop = [kitImages objectEnumerator];
NSString *imgPath;
while ((imgPath = [imageLoop nextObject])) {
NSImage *img = [[NSImage alloc]initWithContentsOfFile:imgPath];
//apply image to view
[targetImage lockFocus];
[img drawInRect:NSMakeRect(x,y,75,75)
fromRect:NSMakeRect(20,20,150,150) operation:NSCompositeCopy fraction:
1];
//set new coordinates
x = x+75;
//if coordinates are too wide, start new row - if x300, reset x to
0 and add 100 to y
if( x (float)299 ){
x = x-300;
y = y+75;
NSLog(@x is greater than 300);
}
}
.
//cleanup
[bmpImageRep release];
[img release];
[kitLogoImg release];
[targetImage release];
Thanks for everyones help.
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Problem with MakeKeyandOrderFront
My app has a secondary view that appears when I click a button (to do another task) it works fine most of the time. It's a core data app that uses an xml file store. I've started adding data so there's now maybe 1000 instances of an entity in it, and I've not started adding other entities or relationships. My secondary view won't appear now. basically I have a products list that is in the first tab of a tabbed display, and then when I'm in the second tab the button is there to display the extra window with the same product list, plus other things. Now when I click the button the focus goes from the main window but the second window doesn't appear. If I move the data file it works fine. Have I just overloaded it already? Even if all I do is open the app and go to the second tab and click the button, nothing? Other than this i think I've got it doing what I want! Thanks Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Problem with MakeKeyandOrderFront
nothing in the main console app. I only have this problem using the large data file I've created. I've been adding data to the app and now this just won't work. If I move the xml file or the app it's fine. It's fine running in xcode too. I think I'll have to move to an sqllite store and start all over again, Amy On 5 Oct 2010, at 20:59, Ken Thomases wrote: On Oct 5, 2010, at 1:55 PM, Amy Heavey wrote: Now when I click the button the focus goes from the main window but the second window doesn't appear. If I move the data file it works fine. Have I just overloaded it already? Even if all I do is open the app and go to the second tab and click the button, nothing? Check the console log (either in Xcode's console window or the main console log viewable with Console.app, depending on how you ran your app). I bet you're getting an exception, which is just prematurely terminating some operation within your app. If you're running in the debugger, enable breakpoints and Stop on Objective-C Exceptions in Xcode's Run menu. Regards, Ken ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: portable app
Just to let you know, This is great, it now safely stores everything on the thumbdrive for easy access on any machine I like. A perfect solution. Thank You, Many Thanks Amy On 1 Oct 2010, at 12:00AM, Ariel Feinerman wrote: Are you sure in the using of 'library/application support'? There is of the matter is that one is designed for the app data not for the user data. Maybe you should save such files in a directory relative to the bundle or in the bundle itself (not good idea). In this case you can launch your app from your drive. If your app is in /Users/user/yourapp, your files in /Users/user/yourapp/Application Support, it looks: NSString *appSupport = NSBundle mainBundle] bundlePath] stringByDeletingLastPathComponent] stringByAppendingPathComponent: @Appication Support]; 2010/9/29 Amy Heavey a...@willowtreecrafts.co.uk I'm writing an app for personal use, using core data. At the moment it's set up to save the data file in the library/ application support/myapp folder on the machine. I also want to store a growing number of images to use with the app, so they are set to store in this folder as well. However, I'd like to be able to use this app on my laptop as well as the desktop. I don't really fancy managaing some kind of sync, and thought the best solution would be to store the app and all the data/images on a thumb drive. There's only me using the app, and having to walk and get the drive from the office isn't a huge headache, and I can easily take it with me if I want to work elsewhere (not on my home network). How would I set the data store to a mobile drive? can anyone point me at a tutorial? Is it as simple as naming the thumbdrive and referring to it by name in the code? The Code I've currently got is the auto/default type set up, following the Hillegass book as well, Thanks, Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/arielfapple%40gmail.com This email sent to arielfap...@gmail.com -- best regards Ariel ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/home%40willowtreecrafts.co.uk This email sent to h...@willowtreecrafts.co.uk ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: portable app
This looks great, so I can store everything on the thumbdrive without having to set up symlinks on the machines I want to use, and I don't have to reference the drive itself as I can take the location from the app bundle, perfect. ( a bit like web relative links I suppose,) sorry, I did mean the data etc was in the ~/library/application support/myapp folder. Many Thanks Amy On 1 Oct 2010, at 12:00AM, Ariel Feinerman wrote: Are you sure in the using of 'library/application support'? There is of the matter is that one is designed for the app data not for the user data. Maybe you should save such files in a directory relative to the bundle or in the bundle itself (not good idea). In this case you can launch your app from your drive. If your app is in /Users/user/yourapp, your files in /Users/user/yourapp/Application Support, it looks: NSString *appSupport = NSBundle mainBundle] bundlePath] stringByDeletingLastPathComponent] stringByAppendingPathComponent: @Appication Support]; 2010/9/29 Amy Heavey a...@willowtreecrafts.co.uk I'm writing an app for personal use, using core data. At the moment it's set up to save the data file in the library/ application support/myapp folder on the machine. I also want to store a growing number of images to use with the app, so they are set to store in this folder as well. However, I'd like to be able to use this app on my laptop as well as the desktop. I don't really fancy managaing some kind of sync, and thought the best solution would be to store the app and all the data/images on a thumb drive. There's only me using the app, and having to walk and get the drive from the office isn't a huge headache, and I can easily take it with me if I want to work elsewhere (not on my home network). How would I set the data store to a mobile drive? can anyone point me at a tutorial? Is it as simple as naming the thumbdrive and referring to it by name in the code? The Code I've currently got is the auto/default type set up, following the Hillegass book as well, Thanks, Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/arielfapple%40gmail.com This email sent to arielfap...@gmail.com -- best regards Ariel ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
portable app
I'm writing an app for personal use, using core data. At the moment it's set up to save the data file in the library/ application support/myapp folder on the machine. I also want to store a growing number of images to use with the app, so they are set to store in this folder as well. However, I'd like to be able to use this app on my laptop as well as the desktop. I don't really fancy managaing some kind of sync, and thought the best solution would be to store the app and all the data/ images on a thumb drive. There's only me using the app, and having to walk and get the drive from the office isn't a huge headache, and I can easily take it with me if I want to work elsewhere (not on my home network). How would I set the data store to a mobile drive? can anyone point me at a tutorial? Is it as simple as naming the thumbdrive and referring to it by name in the code? The Code I've currently got is the auto/ default type set up, following the Hillegass book as well, Thanks, Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSString / NSURL
I still get an error: 2010-08-29 09:13:46.337 ishop[2766:10b] *** -[NSURL URLByAppendingPathComponent:]: unrecognized selector sent to instance 0xc6356a0 2010-08-29 09:13:46.337 ishop[2766:10b] *** -[NSURL URLByAppendingPathComponent:]: unrecognized selector sent to instance 0xc6356a0 Many Thanks Amy On 28 Aug 2010, at 4:08PM, David Duncan wrote: On Aug 28, 2010, at 8:04 AM, Amy Heavey wrote: Sorry duh! 2010-08-28 15:55:27.961 ishop[1920:10b] *** -[NSURL stringByAppendingPathComponent:]: unrecognized selector sent to instance 0x16fbe0 2010-08-28 15:55:27.961 ishop[1920:10b] *** -[NSURL stringByAppendingPathComponent:]: unrecognized selector sent to instance 0x16fbe0 defaultImageLocation is an NSURL* (because thats what you created at the top of the method). You want to use - URLByAppendingPathComponent: with it. -- David Duncan ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/home%40willowtreecrafts.co.uk This email sent to h...@willowtreecrafts.co.uk ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSString / NSURL
10.5 i386, On 29 Aug 2010, at 9:21AM, Roland King wrote: What OS are you building for? On 29-Aug-2010, at 4:14 PM, Amy Heavey wrote: I still get an error: 2010-08-29 09:13:46.337 ishop[2766:10b] *** -[NSURL URLByAppendingPathComponent:]: unrecognized selector sent to instance 0xc6356a0 2010-08-29 09:13:46.337 ishop[2766:10b] *** -[NSURL URLByAppendingPathComponent:]: unrecognized selector sent to instance 0xc6356a0 Many Thanks Amy On 28 Aug 2010, at 4:08PM, David Duncan wrote: On Aug 28, 2010, at 8:04 AM, Amy Heavey wrote: Sorry duh! 2010-08-28 15:55:27.961 ishop[1920:10b] *** -[NSURL stringByAppendingPathComponent:]: unrecognized selector sent to instance 0x16fbe0 2010-08-28 15:55:27.961 ishop[1920:10b] *** -[NSURL stringByAppendingPathComponent:]: unrecognized selector sent to instance 0x16fbe0 defaultImageLocation is an NSURL* (because thats what you created at the top of the method). You want to use - URLByAppendingPathComponent: with it. -- David Duncan ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/home%40willowtreecrafts.co.uk This email sent to h...@willowtreecrafts.co.uk ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/rols%40rols.org This email sent to r...@rols.org ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/home%40willowtreecrafts.co.uk This email sent to h...@willowtreecrafts.co.uk ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSString / NSURL
Thanks everyone, I've been looking at everything and still can't quite
get my head round it, basically all I want to do is copy a selected
file to a new location.
I'm using a coredata app, so I was trying to follow the 'default' code
provided, but I'm compiling for 10.5 and it seems there's a bit of
flux between string based paths and urls.
Is there sample code / tutorial somewhere I'm missing?
This is what I've got at the moment, but it's still mixing URLs and
strings, I've tried just using strings, but the
applicationSupportFolder returns a string, which then is immutable so
I can't add to it?
- (IBAction)selectImageFile:(id)sender;
{
// Create the File Open Dialog class.
NSOpenPanel* openDlg = [NSOpenPanel openPanel];
// Enable the selection of files in the dialog.
[openDlg setCanChooseFiles:YES];
// process the files.
if ( [openDlg runModalForDirectory:nil file:nil] == NSOKButton )
{
// Get an array containing the full filenames of all
// files and directories selected.
NSArray* files = [openDlg filenames];
// process file
NSObject *Product;
Product = [[Products selectedObjects] objectAtIndex:0];
NSString* filePath = [files objectAtIndex:0];
NSString* fileName= [filePath lastPathComponent];
NSURL* imagePath = [NSURL fileURLWithPath: [[self
applicationSupportFolder] stringByAppendingPathComponent: @images]];
--Here are 2 warnings that NSURL may not respond to
stringByAppendingPathComponent
[imagePath stringByAppendingPathComponent:fileName];
NSLog(@Old Path is %@ New Path is %@, filePath, imagePath);
[[ NSFileManager defaultManager ] copyItemAtPath:filePath
toPath:imagePath error:nil];
//[Product setValue:imagePath forKey:@productImage];
}
Many Thanks
Amy
On 29 Aug 2010, at 9:30AM, Graham Cox wrote:
On 29/08/2010, at 10:14 AM, Amy Heavey wrote:
I still get an error:
On what line?
Looking at the code you have mixed string paths and URLs. Pick one
or the other and use it consistently. While string paths are
becoming deprecated in favour of URLs, it might be easier to just
use string paths initially to get it working and then convert to
URLs throughout afterwards.
For example, [NSOpenPanel filenames] is deprecated, as it returns
the selected files as strings. Use [NSOpenPanel URLs] if you want to
use URLs. Similarly for [NSFileManager copyItemAtPath:toPath:error]
use [NSFileManager copyItemAtURL:toURL:error].
Mixing two different representations of a file path is what is
causing you problems here. Be consistent.
--Graham
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Re: NSString / NSURL
Thank You!
I had been trying to do that but couldn't get the brackets right,
sometimes you just need to start a fresh line instead of trying to
edit don't you.
That's working now and is perfect,
Thank you for your time and help everyone,
Many Thanks
Amy
On 29 Aug 2010, at 10:43AM, Roland King wrote:
NSFileManager copyItemAtPath:toPath: takes two NSString's so you
can't use an NSURL anyway. In fact nothing in that code needs an
NSURL.
Get rid of that NSURL stuff (note: typed in mail)
NSString *imagePath = [ [ [ self applicationSupportFolder ]
stringByAppendingPathComponent:@images ]
stringByAppendingPathComponent:fileName ];
then just use the imagePath.
On 29-Aug-2010, at 5:23 PM, Amy Heavey wrote:
Thanks everyone, I've been looking at everything and still can't
quite get my head round it, basically all I want to do is copy a
selected file to a new location.
I'm using a coredata app, so I was trying to follow the 'default'
code provided, but I'm compiling for 10.5 and it seems there's a
bit of flux between string based paths and urls.
Is there sample code / tutorial somewhere I'm missing?
This is what I've got at the moment, but it's still mixing URLs and
strings, I've tried just using strings, but the
applicationSupportFolder returns a string, which then is immutable
so I can't add to it?
- (IBAction)selectImageFile:(id)sender;
{
// Create the File Open Dialog class.
NSOpenPanel* openDlg = [NSOpenPanel openPanel];
// Enable the selection of files in the dialog.
[openDlg setCanChooseFiles:YES];
// process the files.
if ( [openDlg runModalForDirectory:nil file:nil] == NSOKButton )
{
// Get an array containing the full filenames of all
// files and directories selected.
NSArray* files = [openDlg filenames];
// process file
NSObject *Product;
Product = [[Products selectedObjects] objectAtIndex:0];
NSString* filePath = [files objectAtIndex:0];
NSString* fileName= [filePath lastPathComponent];
NSURL* imagePath = [NSURL fileURLWithPath: [[self
applicationSupportFolder] stringByAppendingPathComponent:
@images]];
--Here are 2 warnings that NSURL may not respond to
stringByAppendingPathComponent
[imagePath stringByAppendingPathComponent:fileName];
NSLog(@Old Path is %@ New Path is %@, filePath, imagePath);
[[ NSFileManager defaultManager ] copyItemAtPath:filePath
toPath:imagePath error:nil];
//[Product setValue:imagePath forKey:@productImage];
}
Many Thanks
Amy
On 29 Aug 2010, at 9:30AM, Graham Cox wrote:
On 29/08/2010, at 10:14 AM, Amy Heavey wrote:
I still get an error:
On what line?
Looking at the code you have mixed string paths and URLs. Pick one
or the other and use it consistently. While string paths are
becoming deprecated in favour of URLs, it might be easier to just
use string paths initially to get it working and then convert to
URLs throughout afterwards.
For example, [NSOpenPanel filenames] is deprecated, as it returns
the selected files as strings. Use [NSOpenPanel URLs] if you want
to use URLs. Similarly for [NSFileManager
copyItemAtPath:toPath:error] use [NSFileManager
copyItemAtURL:toURL:error].
Mixing two different representations of a file path is what is
causing you problems here. Be consistent.
--Graham
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NSString / NSURL
'm trying to do a fairly simple copy file process, so I select a file,
and it gets copied to a new location. I seem to be mixing up NSString
and NSURL as I keep getting an NSURL error, can anyone point me down
the right path?
This is what I've got at the moment:
- (IBAction)selectImageFile:(id)sender;
{
NSString* defaultImageLocation;
defaultImageLocation = [NSURL fileURLWithPath: [[self
applicationSupportFolder] stringByAppendingPathComponent: @/images/]];
// Create the File Open Dialog class.
NSOpenPanel* openDlg = [NSOpenPanel openPanel];
// Enable the selection of files in the dialog.
[openDlg setCanChooseFiles:YES];
// process the files.
if ( [openDlg runModalForDirectory:nil file:nil] == NSOKButton )
{
NSArray* files = [openDlg filenames];
// process file
NSObject *Product;
Product = [[Products selectedObjects] objectAtIndex:0];
NSString* filePath = [files objectAtIndex:0];
NSString* fileName= [filePath lastPathComponent];
NSMutableString* imagePath;
imagePath = defaultImageLocation;
[imagePath stringByAppendingPathComponent:fileName];
[[ NSFileManager defaultManager ] copyItemAtPath:filePath
toPath:imagePath error:nil];
[Product setValue:imagePath forKey:@productImage];
}
}
Many Thanks
Amy
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Re: NSString / NSURL
Sorry duh! 2010-08-28 15:55:27.961 ishop[1920:10b] *** -[NSURL stringByAppendingPathComponent:]: unrecognized selector sent to instance 0x16fbe0 2010-08-28 15:55:27.961 ishop[1920:10b] *** -[NSURL stringByAppendingPathComponent:]: unrecognized selector sent to instance 0x16fbe0 Many Thanks On 28 Aug 2010, at 4:02PM, David Duncan wrote: On Aug 28, 2010, at 7:58 AM, Amy Heavey wrote: 'm trying to do a fairly simple copy file process, so I select a file, and it gets copied to a new location. I seem to be mixing up NSString and NSURL as I keep getting an NSURL error, can anyone point me down the right path? What is the error you are getting? -- David Duncan ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/home%40willowtreecrafts.co.uk This email sent to h...@willowtreecrafts.co.uk ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Mapping Model
Hi, I've got a core data app that I'm working on, and I started off with quite simple relationships. I've got a products entity, and a purchase order entity, which had many to m any relationships between them. I now need to be able to set a quantity for each product in each purchase order. I think I need to set up an inbetween entity, (called purchaseOrderItem) which stores the quantity for each product, and has relationships to the product and purchase order entity. I can set it all up in the datamodel, but to be able to use the data already in the app I need to migrate it over. I expect to initially set all quantites to 1, but I can't work out how to set up the mapping model so it moves the relationships correctly. Can anyone point me in the right direction? data model 1.0 Entities: Product, PurchaseOrder Relationships: Product PurchaseOrder data model 1.1 Entities: Product, PurchaseOrder, PurchaseOrderItem Relationships: Product PurchaseOrderItem PurchaseOrderItem PurchaseOrder Many Thanks Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Key Paths @count and mutablestrings
On 4 Nov 2008, at 17:32, Benjamin Stiglitz wrote: PurchaseOrder is an Entity, with a relationship called products to the PurchaseOrderItems Entity which lists the actual items on the order. I'd like a column in my Purchase Order tabel to display the number of items in the order, so I've tried a number of different things along the lines of Value: bound to Purchase Order Array Controller arrangedObjects @count.products but I get the following error: 2008-11-03 18:41:44.928 powizard[8498] [NSManagedObject 0x654a70 valueForUndefinedKey:]: this class is not key value coding- compliant for the key @count. … How do I access the count of a to-many relationship? You’ve got that backwards; you want [EMAIL PROTECTED] I tried this at the time and it worked, but now I've made other unrelated changes to the app and now it won't? I've cleared out all my other code and associated problems, and I'm at the same point, key path orderReference works, but [EMAIL PROTECTED] doesn't? [Session started at 2008-11-05 20:42:25 +.] 2008-11-05 20:42:28.462 powizard[22921] [_NSFaultingMutableSet 0x165e910 addObserver:forKeyPath:options:context:] is not supported. Key path: @count Thanks, Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Key Paths @count and mutablestrings
On 4 Nov 2008, at 17:32, Benjamin Stiglitz wrote:
On Mon, Nov 03, 2008 at 06:55:24PM +, Amy Heavey wrote:
…
How do I access the count of a to-many relationship?
You’ve got that backwards; you want [EMAIL PROTECTED]
Fantastic! Thank You,
Do you mean print out on a printer, or just display on the screen?
I'll be displaying it in a view so it can be saved to PDF.
I figure I need 4 strings, 1 for each 'column' of the table I
want, then
I can just create strings with new lines and it will lay itself out
correctly.
If I was binding a tablecolumn I would use the following binding:
arrangedObjects.qty[Purchase Order Items Array Controller
(NSArrayController)]
so how do I loop through the array, setting the string value each
time to
create a string along the lines of @1234/n3698/n3258/n4587/n where
1234, 3698, 3258 and 4587 are the qty values?
I’m not really clear what you’re doing here. You’ll want to go through
your array controller’s arrangedObjects accessor to get the values,
and
then pull out the keys on your own.
Is there an easy way to access the existing Array Controller from the
code? I have a suitable Array Controller called Purchase Order Items
Array Controller in IB, but I don't see a way to reference this in
the code. The Array Controller is bound to the selection of another
Array Controller.
At the moment I'm doing all the work again using a fetch request (not
that I've got it working yet) to create an array, then looping
through the array to pull out the data,
Ideally I'd like to be able to loop through the Purchase Order Items
Array Controller arrangedObjects, and then set strings like
for each (object in Purchase Order Items Array Controller ){
qtyString = [[Purchase Order Items Array Controller arrangedObjects]
valueForKey:@qty];
...
}
(where qty is an attributes of the PurchaseOrderItems Entity
but i don't think it works like that!
-Ben
Thanks for all your help though,
Amy___
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Key Paths @count and mutablestrings
Hi, I'm afraid I have a couple more questions :( Key Paths Bindings I've been quite sucessful in setting up my bindings using key paths, but now I'm trying to use @count. I have a table that displays a list of PurchaseOrders. PurchaseOrder is an Entity, with a relationship called products to the PurchaseOrderItems Entity which lists the actual items on the order. I'd like a column in my Purchase Order tabel to display the number of items in the order, so I've tried a number of different things along the lines of Value: bound to Purchase Order Array Controller arrangedObjects @count.products but I get the following error: 2008-11-03 18:41:44.928 powizard[8498] [NSManagedObject 0x654a70 valueForUndefinedKey:]: this class is not key value coding-compliant for the key @count. If I use Value: bound to Purchase Order Array Controller arrangedObjects orderReference I get the orderReference correctly. OrderReference is an attribute of the PurchaseOrder Entity. How do I access the count of a to-many relationship? Next Question... I then want to print out some of this data, so I've created a view, and got it all laid out, now I just need to populate it with the data. I thought the easiest way would be to loop through the info and display strings but I'm struggling a bit. I figure I need 4 strings, 1 for each 'column' of the table I want, then I can just create strings with new lines and it will lay itself out correctly. If I was binding a tablecolumn I would use the following binding: arrangedObjects.qty[Purchase Order Items Array Controller (NSArrayController)] so how do I loop through the array, setting the string value each time to create a string along the lines of @1234/n3698/n3258/n4587/ n where 1234, 3698, 3258 and 4587 are the qty values? In this case, the content set of the Purchase Order Items Array Controller are bound to selection.products [Purchase Order Array Controller] I'd appreciate any help, Many Thanks Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: filtering a tableView from a pulldown
On 29 Oct 2008, at 14:42, I. Savant wrote: On Wed, Oct 29, 2008 at 4:49 AM, Amy Heavey [EMAIL PROTECTED] wrote: The pop up has selectedObject bound to Purchase Order Array Controller 2 selection.orderReference ... At the moment the content Object is bound to selection.orderReference of the Purchase Order Array Controller. Okay, but what is orderReference? Is it an attribute holding the order number? Yes If so, this is at least part of your problem. You probably want the *content values* (the strings displayed in the popup, which represent the actual objects being listed) bound to arrangedObjects.orderReference, but the selected *object* should probably not be the order number. The controller key should be the selection but the model key path should be empty. This directly selects the purchase order object in the array controller. If I leave the model path empty, then I get an extra line in my pop up with _NSControllerObjectProxy: 0x143e450 and it doesn't auto select the chosen Purchase ORder from the previous window. If I put orderReference in the model path then the pop up itself displays the way I intended, The way you have it bound now means that your Line Items controller's content is the orderReference (which I assume is a string, given the error you posted previously). A string probably won't contain a list of line items, right? correct, I think part of my problem is I am used to working with MySQL databases, and I'm thinking along the lines of joining across a value, I think I'm getting a bit confused between concepts, I assume your PurchaseOrder entity has a to-many relationship to the line items (we'll call it lineItems for obvious reasons). If this is the case, then your Line Item controller's content should be bound to the Purchase Order controller's selection.lineItems. This means the Line Item controller's contents points to an NS[Mutable]Set containing the line items of the selected purchase order. I tried to bind the contentArray to that but it threw an error, OK, so now I tried to bind the Purchase Order Items Array Controller (which is your line items I believe), as follows: content set - Purchse Order Array Controller controller key - selection model path - empty You want the content *set*. To-many relationships in Core Data deal with NS[Mutable]Sets, not arrays. Both of these points are thoroughly covered in the documentation, but you have to understand that you're dealing with two separate mechanisms that happen to be designed to work well together. This means there are two different areas of the documentation that you need to read carefully. Thanks, I was considering it all as Arrays, based on the fact that they are called Array Controllers, but an Array Controller can also use a Set as a datasource, (datasource not used here in the cocoa sense, ) But I'm still getting an error when trying to use the bindings you suggested above, now it doesn't like the NSSet, [Session started at 2008-10-30 12:30:53 +.] 2008-10-30 12:30:55.531 powizard[13245] An uncaught exception was raised 2008-10-30 12:30:55.532 powizard[13245] Cannot create NSSet from object _NSControllerObjectProxy: 0x1646580 of class _NSControllerObjectProxy 2008-10-30 12:30:55.532 powizard[13245] *** Uncaught exception: NSInternalInconsistencyException Cannot create NSSet from object _NSControllerObjectProxy: 0x1646580 of class _NSControllerObjectProxy I do appreciate all your help. I'm hoping if I can get this one working I'll be able to work out others myself. Thank You Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: filtering a tableView from a pulldown
On 30 Oct 2008, at 14:11, I. Savant wrote: The pop up has selectedObject bound to Purchase Order Array Controller 2 selection.orderReference ... At the moment the content Object is bound to selection.orderReference of the Purchase Order Array Controller. If you're binding the content object(s), this is wrong. Again, you want the popup's *selected object*. bound to Purchase Order Array Controller.selection. I did have the selected object not the content object bound. If I leave the model path empty, then I get an extra line in my pop up with _NSControllerObjectProxy: 0x143e450 and it doesn't auto select the chosen Purchase ORder from the previous window. If I put orderReference in the model path then the pop up itself displays the way I intended, Okay, it *displays* the way you intended, but it's still designating the orderReference string as the selected object. This is wrong. ... The popup can be configured in various ways (for maximum flexibility and confusion :-)). For simplicity, how about this? Remove all popup bindings so you're starting clean. Bind the popup's Content Values to Purchase Order Array Controller's arrangedObjects.orderReference. Bind the popup's Selected Value to the PO controller's selection.orderReference. OK, done that... With this set of bindings, the PO array controller's selection management should work perfectly. This assumes the Line Item array controller is also configured properly, so to verify your popup's configuration, I'd disconnect the Line Item controller's content binding for now just to test this. OK, the pop up is displaying the PO orderReferences fine, however when I change the option in the pulldown, it's changing the value of the selected row in the table, correct, I think part of my problem is I am used to working with MySQL databases, and I'm thinking along the lines of joining across a value, I think I'm getting a bit confused between concepts, Yeah, forget all that. It has nothing to do with Core Data because Core Data is not an RDBMS (per the documentation). It has many similarities but it has a number of very important differences. They (the documentation team and developers) have coined the phrase, object graph management and persistence framework. Take it as gospel. Repeat after me: Core Data is NOT an RDBMS. :-) Core Data is NOT an RDBMS :) Thanks, I was considering it all as Arrays, based on the fact that they are called Array Controllers, but an Array Controller can also use a Set as a datasource, (datasource not used here in the cocoa sense, ) Yes. Core Data was added in 10.4, the Bindings mechanism was added in 10.3. At the time, an array controller controlled arrays (I believe, but I may be wrong). It just wouldn't do to rename it NSArrayAndSetController or to add another controller dedicated to sets, but I can see the source of confusion. :-) Another important aspect was added, too, which I'll mention in a moment. OK, so now I tried to bind the Purchase Order Items Array Controller (which is your line items I believe), as follows: content set - Purchse Order Array Controller controller key - selection model path - empty ... But I'm still getting an error when trying to use the bindings you suggested above, now it doesn't like the NSSet, 2008-10-30 12:30:55.532 powizard[13245] Cannot create NSSet from object _NSControllerObjectProxy: 0x1646580 of class _NSControllerObjectProxy 2008-10-30 12:30:55.532 powizard[13245] *** Uncaught exception: NSInternalInconsistencyException Cannot create NSSet from object _NSControllerObjectProxy: 0x1646580 of class _NSControllerObjectProxy Have I misspoken somewhere? I can't find where I might have, but you quoted me saying, ... your Line Item controller's content should be bound to the Purchase Order controller's 'selection.lineItems'. I meant for your Items controller's Content Set binding to be bound to Purchase Order Array Controller's selection.lineItems (or whatever your to-many relationship to your items set is called). The binding you specified above does not follow this. OK, I think I've done that. So now, the pulldown filters the tableview. but there's a snag. I select a Purchase Order in my window, and click a button which opens the panel with the Purchase Orders 'line items' in the table. The Purchase Order is in the pulldown, and the items in that order are in the table. If I now select a different orderReference in the pulldown, it changes all of the 'lineItems' Purchase ORder to the newly selected one, so in my table, all of those items now have a different orderReference. I expected to be able to select a different orderReference in the pulldown, and for the table to update to display the lineitems for that OTHER order. I do appreciate all your help. I'm hoping if I can get this one working I'll be able to work out others myself. Been there. Once it clicks, you'll
Re: filtering a tableView from a pulldown
On 30 Oct 2008, at 14:41, I. Savant wrote: Is it possible for you to post a pared-down version of your project somewhere for myself and others on the list to take a look at? I've uploaded the project folder to www.amygibbs.co.uk/xcode/powizard one thing to note, is that at the moment the persistantstore is hardcoded to my thumbdrive, as if I can get it up and running I'd like to store the file there rather than having to copy/paste it from the application support folder all the time. It's not perfect but I've got bigger issues with this first! Thanks, ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: filtering a tableView from a pulldown
On 28 Oct 2008, at 16:15, I. Savant wrote: The pulldown is bound as follows: content: arrangedObjects[PurchaseOrder Array Controller(NSArray Controller)] content values: Purchase ORder Array Controller arrangedObjects.orderReference These bindings seem fine. How about selection? One of the popup's selection bindings should be bound to the PurchaseOrder Array Controller's selection. The pop up has selectedObject bound to Purchase Order Array Controller 2 selection.orderReference All of this is on a panel that appears when I select a Purchase Order and click a Details button. The popup correctly shows the selected Purchase Order Order Reference, and lists all of the other Purchase orders within it. The Table view has 6 columns, one of which is the Purchase Order number (as displayed in the pulldown) This seems wrong. If your table is intended to display the line items belonging to the order, why have the order number on each line item? I don't really need it, I created most of the interface by alt- dragging from the data model, and it put it there, at the moment it's handy for me to quickly see that it's not working properly, as when it is working, all the lines should have the same value there. It's not vital for it to be there though, In any case, you need a *separate* controller to reflect the line items of the selected order. Create an array controller and set it up so that it holds your line item objects. We'll call it your Line Item Array Controller. OK, I have an Array Controller for that, called Purchase Order Items Array Controller. Its contents should be bound to PurchaseOrder Array Controller's selection.lineItems (or whatever the key path is to your order's line items). At the moment the content Object is bound to selection.orderReference of the Purchase Order Array Controller. I tried to bind the contentArray to that but it threw an error, Your table view's columns should each be bound to the Line Item Array Controller's arrangedObjects.property (where property refers to individual properties such as item number, description, quantity, etc.). My Qty table column is bound to Purchase Order Items Array Controller arrangedObjects.qty Then I have other columns: Vendor SKU - Purchase Order Items Array Controller arrangedObjects.vendorSKU Product - content- Products Array Controller arrangedObjects contentValues-Products Array Controller arrangedObjects.sku selectedObject-Purchase Order Items Array Controller arrangedObjects.product Purchase Order (not vital) - content- Purchase Order Array Controller arrangedObjects contentValues- Purchase Order Array Controller arrangedObjects.orderReference selectedObject- Purchase Order Items Array Controller arrangedObjects.purchaseOrder Shipment content- Shipment Array Controller arrangedObjects contentValues- Shipment Array Controller arrangedObjects.shipperReference selectedObject- Purchase Order Items Array Controller arrangedObjects.shipment but the panel won't load and displays the following error: [Session started at 2008-10-29 08:42:05 +.] 2008-10-29 08:42:07.826 powizard[6592] *** NSRunLoop ignoring exception '[NSCFString 0x164c740 valueForUndefinedKey:]: this class is not key value coding-compliant for the key qty.' that raised during posting of delayed perform with target 16699b0 and selector 'invokeWithTarget:' 2008-10-29 08:42:07.829 powizard[6592] *** NSRunLoop ignoring exception '[NSCFString 0x164c740 valueForUndefinedKey:]: this class is not key value coding-compliant for the key shipment.' that raised during posting of delayed perform with target 1669b50 and selector 'invokeWithTarget:' Spend as much time as you can manage reading over the documentation I sent you previously. If there are things you don't understand, post your questions back to the list for clarification. I have read through it, and it's not as much that it doesn't make sense, I can see what it's saying, it's applying it that I'm struggling with, and I've got both the 2nd and 3rd editions of cocoa programming, but the second edition doesnt cover core data as much, and the third edition uses leopard, where I am on 10.4, and wanting to release for 10.4 too and the IB interface/panels etc are quite different, -- I.S. Thank you for all your help, ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
filtering a tableView from a pulldown
I have a pulldown button, and a tableview. They both seem to be displaying the correct data, but I'd like to filter the content of the tableview based on the selection in the pulldown button. I've tried all manner of binding combinations but it doesn't seem to work. I'm a real newbie so I apologise for being a bit dim. I did try google, and looking at the settings in the default search box that alt-dragging the core data entity created, but I just can't figure it out. My pulldown contains order references, and the table contains the items in all the orders, so when i select an order number at the top, I want to only display the items in that order? Many Thanks Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: filtering a tableView from a pulldown
I can't work out what the controllers and key paths should be. The pulldown is bound as follows: content: arrangedObjects[PurchaseOrder Array Controller(NSArray Controller)] content values: Purchase ORder Array Controller arrangedObjects.orderReference The Table view has 6 columns, one of which is the Purchase Order number (as displayed in the pulldown) that column is bound as: content: arrangedObjects[PurchaseOrder Array Controller 13(NSArray Controller)] content values: arrangedObjects.orderReference does that help at all? I created the master/details interface by alt-dragging from the data model. In the model there are purchaseORderItems that have the following attributes/relationships: Attributes qty vendorsku Relationships product purchaseOrder shipment The tableview shows all the purchaseOrderItems, and I want to filter it by the order reference in the pulldown above the tableview. Many Thanks Amy On 28 Oct 2008, at 14:36, I. Savant wrote: I have a pulldown button, and a tableview. They both seem to be displaying the correct data, but I'd like to filter the content of the tableview based on the selection in the pulldown button. I've tried all manner of binding combinations but it doesn't seem to work. This is difficult to answer because you left out all the critical details (controller names, key paths, etc.). All that is left is to point you to the documentation: Cocoa Bindings Programming Topics - Creating a Master-Detail Interface http://developer.apple.com/documentation/Cocoa/Conceptual/ CocoaBindings/Tasks/masterdetail.html -- I.S. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Core Data adding new instance - creating relationship to existing instance
Thank You, and I am very sorry for being so dim, I'm working on an app that accessing an existing file that Definitely has the Categories, but I'd forgotten that I'd been working on an empty file to make it easier to see changes I was making! Many Thanks Amy On 19 Sep 2008, at 19:23, Jamie Hardt wrote: Hi- Your fetch request isn't finding any Categories, and the array returning from executeFetchRequest is empty. Before doing the setValue:forKey:, you should test the returned array from executeFetchRequest to make sure it contains 0 categories, and handle the situation appropriately if it doesn't. You should also, by-the-by, be passing an NSError pointer to executeFetchRequest: and testing that after it returns to make sure an error didn't occur. On Sep 19, 2008, at 10:47 AM, Amy Heavey wrote: -[NSCFArray objectAtIndex:]: index (0) beyond bounds (0) ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Core Data adding new instance - creating relationship to existing instance
I'm trying to add new instances of some entities, I've got it adding new objects, and I can create new relationships to new related objects, but I can't work out how to connect a new instance to an existing instance of an entity, eg I have items with relationship to upcs and categories. I can add the new item, and set all the attributes, and new relationships to the new upcs that are also created, but I cannot create the new relationship to an existing category. The Category Entity has an attribute called name that I want to match to an NSString I am assuming that I would actually set the relationship in the usual manner: NSManagedObject *newItem = [NSEntityDescription insertNewObjectForEntityForName:@Item inManagedObjectContext:moc]; NSPredicate *catFind = [NSPredicate predicateWithFormat:@name like % @,categoryString]; NSFetchRequest *fetch=[[NSFetchRequest alloc] init]; [fetch setEntity:[NSEntityDescription entityForName:@Category inManagedObjectContext:moc]]; [fetch setPredicate:catFind]; NSArray *category = [moc executeFetchRequest:fetch error:nil]; [newItem setValue:[category objectAtIndex:0] forKey:@Category]; The problem is actually selecting the category, I have tried all manner of things, and I thought I needed a fetchRequest, but it just throws an error: -[NSCFArray objectAtIndex:]: index (0) beyond bounds (0) because there is nothing in the array? I'm aiming at 10.4 and using XCode 2.4.1 Can anyone help me? Many Thanks Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: referencing XML Data
On 14 Sep 2008, at 02:51, Nathan Kinsinger wrote:
On Sep 13, 2008, at 12:50 PM, Amy Heavey wrote:
I've got an NSXMLDocument *custdoc
but I can't work out how to actually access the data in the
document, I've looked at NSXMLElement, NSXMLParser, NSXMLNode but
I just can't work out the correct code.
sample xml:
sesbuddycustimport
−
customer
first_nameWillow/first_name
last_nameTree Crafts/last_name
address_199 Leggatts Way/address_1
cityHerts/city
zipWD24 5NQ/zip
countryGBR/country
user_email[EMAIL PROTECTED]/user_email
/customer
−
How can I set an NSString *firstName to the value?
I appreciate any help,
Many Thanks
Amy Heavey
If you are working with Hillegass's example he is putting the XPath
path in the identifier of the table column and uses it in the
tableView:objectValueForTableColumn:row: data source method. In
your example above the path would be sesbuddycustimport/customer/
first_name
If you are working with the NSXMLDocument programatically then you
need to call the nodesForXPath:error: method yourself. I would
separate the individual customer items into an array first then you
can get any info about any customer. Also keep in mind that
NSXMLDocument is a subclass of NSXMLNode so you can call NSXMLNode
methods on it.
(warning, typed into mail)
NSArray *customerArray = [custdoc nodesForXPath:@.//customer
error:nil];
if ([customerArray count) {
for (NSXMLNode *customerNode in customerArray) {
NSArray *firstNameArray = [[customerNode nodesForXPath:@.//
first_name error:nil];
if ([firstNameArray count]) {
NSString *firstNameString = [firstNameArray objectAtIndex:0]
stringValue];
// do something with the first name string
}
// get other strings
...
// do something with the other strings
...
}
}
There are other methods of getting info out of an NSXMLDocument (or
XML data in general), but this is how I usually approach it. You
didn't mention what you wanted to do with the string.
Hope this helps,
--Nathan
Overall I want to extract the data from the XML file, and create new
instances of CoreData Entities with it.
I seem to keep getting errors along the lines of NSArray / NSString /
NSXMLNode may not respond to -nodesForXpath / stringForPath:ofNode:
It's already in a loop, and
printf( Customer: %s\n, [[obj description] cString] );
correctly print out the correct line,
Customer: customerfirst_nameWillow/first_namelast_nameTree
Crafts/last_nameaddress_199 Leggatts Way/address_1cityHerts/
cityzipWD24 5NQ/zipcountryGBR/
countryuser_email[EMAIL PROTECTED]/user_email/customer
I just don't seem able to get the individual data,
Many Thanks
Amy___
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Re: referencing XML Data
Thanks for your help Nathan, but I'm obviously doing something really
wrong, I've got the following code,
NSArray *customerArray = [custdoc nodesForXPath:@.//customer
error:nil];
if ([customerArray count]){
NSXMLNode *customerNode;
for (customerNode in customerArray) {
NSArray *firstNameArray;
firstNameArray = [customerNode nodesForXPath:@.//first_name
error:nil];
if ([firstNameArray count]){
NSString *firstNameString = [firstNameArray objectAtIndex:0]
stringValue];
printf(First name= %s\n, firstNameString);
}
}
}
which won't build and gives the following errors:
error: parse error before 'in'
error: parse error before 'stringValue'
I had others about not accepting nested functions which is why I took
the NSXMLNode *customerNode onto it's own line, but I can't work out
why I can't use a for loop?
Many Thanks
Amy Heavey
On 14 Sep 2008, at 02:51, Nathan Kinsinger wrote:
On Sep 13, 2008, at 12:50 PM, Amy Heavey wrote:
I've got an NSXMLDocument *custdoc
but I can't work out how to actually access the data in the
document, I've looked at NSXMLElement, NSXMLParser, NSXMLNode but
I just can't work out the correct code.
sample xml:
sesbuddycustimport
−
customer
first_nameWillow/first_name
last_nameTree Crafts/last_name
address_199 Leggatts Way/address_1
cityHerts/city
zipWD24 5NQ/zip
countryGBR/country
user_email[EMAIL PROTECTED]/user_email
/customer
−
customer
first_nameL/first_name
last_nameLin/last_name
address_19/address_1
city/
zipS***/zip
countryGBR/country
user_emailla**/user_email
/customer
How can I set an NSString *firstName to the value?
I appreciate any help,
Many Thanks
Amy Heavey
If you are working with Hillegass's example he is putting the XPath
path in the identifier of the table column and uses it in the
tableView:objectValueForTableColumn:row: data source method. In
your example above the path would be sesbuddycustimport/customer/
first_name
If you are working with the NSXMLDocument programatically then you
need to call the nodesForXPath:error: method yourself. I would
separate the individual customer items into an array first then you
can get any info about any customer. Also keep in mind that
NSXMLDocument is a subclass of NSXMLNode so you can call NSXMLNode
methods on it.
(warning, typed into mail)
NSArray *customerArray = [custdoc nodesForXPath:@.//customer
error:nil];
if ([customerArray count) {
for (NSXMLNode *customerNode in customerArray) {
NSArray *firstNameArray = [[customerNode nodesForXPath:@.//
first_name error:nil];
if ([firstNameArray count]) {
NSString *firstNameString = [firstNameArray objectAtIndex:0]
stringValue];
// do something with the first name string
}
// get other strings
...
// do something with the other strings
...
}
}
The .// will find all xml elements with that name at any depth in
the node.
I do this often enough that I created a category on NSXMLNode to
help get the string for an element:
- (NSString *)bb_StringFromXPath:(NSString *)nodePath
{
NSArray *nodeArray = [self nodesForXPath:nodePath error:nil];
return [nodeArray count] ? [[nodeArray objectAtIndex:0]
stringValue] : nil;
}
(Note that this will only return the string of the first xml
element that the XPath returns, so make sure to use it on nodes
that you know only have one such element)
So in the example above, inside the for loop I would do this:
NSString *firstNameString = [customerNode bb_StringFromXPath:@.//
first_name];
There are other methods of getting info out of an NSXMLDocument (or
XML data in general), but this is how I usually approach it. You
didn't mention what you wanted to do with the string.
Hope this helps,
--Nathan
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Re: referencing XML Data
Thanks,
I've been messing about with code all over the place, gone a little
blind I think,
however, I now get 2 errors on this line:
1 - nested functions are disabled, use -fnested-functions to renable
2 - syntax error before in
NSArray *customerArray = [custdoc nodesForXPath:@.//customer
error:nil];
if ([customerArray count]) {
for (NSXMLNode *customerNode in customerArray) {
NSArray *firstNameArray = [[customerNode nodesForXPath:@.//
first_name error:nil];
if ([firstNameArray count]) {
NSString *firstNameString = [[firstNameArray objectAtIndex:0]
stringValue];
// do something with the first name string
NSLog(@First name = %@, firstNameString);
}
// get other strings
// do something with the other strings
}
}
Many Thanks
Amy
On 16 Sep 2008, at 19:52, Sherm Pendley wrote:
NSArray *customerArray = [custdoc nodesForXPath:@.//customer
error:nil];
if ([customerArray count]){
NSXMLNode *customerNode;
for (customerNode in customerArray) {
error: parse error before 'in'
That should be:
for (NSXMLNode *customerNode in customerArray) {
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Re: referencing XML Data
I've just tried this again, I just changed the start:
void import( NSArray *array ) {
and it is all called by:
import(custNodes);
so I beleive this line is uneccessary:
NSXMLDocument *custdoc = [[NSXMLDocument alloc] initWithData:[NSData
dataWithContentsOfFile:@/Users/nathan/Desktop/xml testing/
customer.xml] options:0 error:nil];
but I still get 3 errors,
I'm using XCode 2.4.1 and wanting this to work on 10.4 systems.
I've managed to get this to nearly work:
void import( NSArray *array ) {
NSEnumerator *enumerator = [array objectEnumerator];
id obj;
while ( obj = [enumerator nextObject] ) {
//printf( Customer: %s\n, [[obj description] cString] );
NSArray *customerArray = [custdoc nodesForXPath:@.//customer
error:nil];
//if ( [customerArray count]) {
//for (NSXMLNode *customerNode in customerArray){
NSLog(@First name = %@, 0);
customerNode=[custNodes objectAtIndex:0];
NSArray *firstNameArray = [customerNode nodesForXPath:@.//
first_name error:nil];
//if ([firstNameArray count]) {
NSString *firstNameString = [[firstNameArray objectAtIndex:0]
stringValue];
NSLog(@First name = %@, firstNameString);
//}
//}
//}
}
}
but I get
2008-09-16 21:12:22.044 ag01[8400] First name = (null)
2008-09-16 21:12:22.055 ag01[8400] First name = Willow
2008-09-16 21:12:22.458 ag01[8400] First name = (null)
2008-09-16 21:12:22.469 ag01[8400] First name = Willow
2008-09-16 21:12:22.730 ag01[8400] First name = (null)
2008-09-16 21:12:22.741 ag01[8400] First name = Willow
2008-09-16 21:12:22.931 ag01[8400] First name = (null)
2008-09-16 21:12:22.937 ag01[8400] First name = Willow
2008-09-16 21:12:23.338 ag01[8400] First name = (null)
2008-09-16 21:12:23.338 ag01[8400] First name = Willow
2008-09-16 21:12:23.573 ag01[8400] First name = (null)
2008-09-16 21:12:23.587 ag01[8400] First name = Willow
2008-09-16 21:12:23.845 ag01[8400] First name = (null)
2008-09-16 21:12:23.854 ag01[8400] First name = Willow
2008-09-16 21:12:24.056 ag01[8400] First name = (null)
2008-09-16 21:12:24.064 ag01[8400] First name = Willow
2008-09-16 21:12:24.268 ag01[8400] First name = (null)
I assume it's to do with customerNode=[custNodes objectAtIndex:0];
but I can't work out what to use instead of objectAtIndex:0
Thank you for all your time,
Many Thanks
Amy
On 16 Sep 2008, at 21:02, Nathan Kinsinger wrote:
On Sep 16, 2008, at 1:24 PM, Amy Heavey wrote:
if ([firstNameArray count]) {
NSString *firstNameString = [[firstNameArray objectAtIndex:0]
stringValue];
// do something with the first name string
NSLog(@First name = %@, firstNameString);
}
// get other strings
// do something with the other strings
}
}
Many Thanks
Amy
I don't see any problem with your for loop statement and compiling
the code works with no errors (after fixing my syntax error). What
version of XCode are you using?
Here's my test (written in XCode :-)
- (void)testXML
{
NSXMLDocument *custdoc = [[NSXMLDocument alloc] initWithData:
[NSData dataWithContentsOfFile:@/Users/nathan/Desktop/xml testing/
customer.xml] options:0 error:nil];
NSArray *customerArray = [custdoc nodesForXPath:@.//customer
error:nil];
if ([customerArray count]) {
for (NSXMLNode *customerNode in customerArray) {
NSArray *firstNameArray = [customerNode nodesForXPath:@.//
first_name error:nil];
if ([firstNameArray count]) {
NSString *firstNameString = [[firstNameArray objectAtIndex:0]
stringValue];
NSLog(@First name = %@, firstNameString);
}
}
}
}
using the data from your first email as the xml file I get:
2008-09-16 14:00:25.137 testStrings[17811:10b] First name = Willow
2008-09-16 14:00:25.159 testStrings[17811:10b] First name = L
--Nathan
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referencing XML Data
I've got an NSXMLDocument *custdoc but I can't work out how to actually access the data in the document, I've looked at NSXMLElement, NSXMLParser, NSXMLNode but I just can't work out the correct code. sample xml: sesbuddycustimport − customer first_nameWillow/first_name last_nameTree Crafts/last_name address_199 Leggatts Way/address_1 cityHerts/city zipWD24 5NQ/zip countryGBR/country user_email[EMAIL PROTECTED]/user_email /customer − customer first_nameL/first_name last_nameLin/last_name address_19/address_1 city/ zipS***/zip countryGBR/country user_emailla**/user_email /customer How can I set an NSString *firstName to the value? I appreciate any help, Many Thanks Amy Heavey ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: referencing XML Data
Thats where i got most of the code from, and I have seen the post on his blog, but I still can't work it out! Many Thanks Amy Heavey On 13 Sep 2008, at 20:09, Hal Mueller wrote: The Amazone example in the new edition of the Hillegass book is a good place to start. He's also got a version of this on his blog that covers a technique that will work on the iPhone. http://weblog.bignerdranch.com/?p=48 Hal ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
creating new instance of coredata entity
Hi, Sorry for the newbie question, I'm trying to write an app to access/edit data held in an sqlite file generated by another coredata app. I need to be able to access the data in ways not possible in the original app (not created by me) Following some advice from this list, I have imported the datamodel into my app, which seems fine. I need to import data into this, and I've modified the sample application in Aaron Hillegass book to pull data from my website like the amazone example. So far It's pulling the xml from my site, and displaying it in the tablevew, however I now need to loop over each row in the table, and create a new instance of an entity defined in the datamodel. Can anyone point me in the right direction? I don't know how to reference the class in the datamodel as my class can't see it? Many Thanks Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: creating new instance of coredata entity
I need to add data from the website to the sqlite file created/used by the cocoa application. I can pull the data in XML out of the website, and display it in a tableview (Aaron Hillegass sample code), but now I need to add that data to my app (stored in an sqlite file) each row of the tableview contains all of the data needed, eg I have customers first name, last name, email address, and in the datamodel there is a Customer Entity (class CustomerEntity) with a firstName and lastName attributes, and an emailaddresses relationship. I don't know how to loop over the tableviewdata creating new instances of the entity? Many Thanks Amy Heavey On 11 Sep 2008, at 18:05, Jamie Hardt wrote: How does the sqlite file relate to pulling XML from your website? I do not follow you there. On Sep 11, 2008, at 1:44 AM, Amy Heavey wrote: Hi, Sorry for the newbie question, I'm trying to write an app to access/edit data held in an sqlite file generated by another coredata app. I need to be able to access the data in ways not possible in the original app (not created by me) Following some advice from this list, I have imported the datamodel into my app, which seems fine. I need to import data into this, and I've modified the sample application in Aaron Hillegass book to pull data from my website like the amazone example. So far It's pulling the xml from my site, and displaying it in the tablevew, however I now need to loop over each row in the table, and create a new instance of an entity defined in the datamodel. Can anyone point me in the right direction? I don't know how to reference the class in the datamodel as my class can't see it? Many Thanks Amy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: creating new instance of coredata entity
Thanks,
I have got access to the datamodel, I've imported it into my xcode
project, it's how to actually create and write the entity that i'm
stuck on, all the examples i've found seem to use bindings and add
buttons,
Many Thanks
Amy Heavey
On 11 Sep 2008, at 18:39, Jamie Hardt wrote:
Ah I see. XML on web - your program - sqlite store that someone
else's program reads/writes.
Looping over the data in the table should just be a matter of going
through all of the items in the table's bound NSArrayController:
//code
NSArray *objectsToLoopThru =
[myArrayControllerWithRecordsFromTheWeb arrangedObjects];
foreach (id oneObject in objectsToLoopThru) {
//create entity
// write entity
}
//endcode
Writing to someone elses data format is a bit trickier, since as
you say, you don't have access to his data model. One alternative
is to use the low-level SQLite API to manual insert rows into his
database, but a better one might be to read out a format that can
be cut/pasted or imported into the third-party's application. Does
the other guy's app have an import function? Since it seems to be
handling people, does it allow contacts to be imported from the
Addressbook or vcards, in which case you could just write out the
scraped rows to the ABAddressBook and use it as a channel.
Just a thought, take or leave. If I were in your situation I would
consider writing to the third party's document as a *last option*,
since there's so many more opportunities for it to break in the
future.
On Sep 11, 2008, at 10:22 AM, Amy Heavey wrote:
I need to add data from the website to the sqlite file created/
used by the cocoa application.
I can pull the data in XML out of the website, and display it in a
tableview (Aaron Hillegass sample code), but now I need to add
that data to my app (stored in an sqlite file)
each row of the tableview contains all of the data needed, eg I
have customers first name, last name, email address, and in the
datamodel there is a Customer Entity (class CustomerEntity) with a
firstName and lastName attributes, and an emailaddresses
relationship.
I don't know how to loop over the tableviewdata creating new
instances of the entity?
Many Thanks
Amy Heavey
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Re: creating new instance of coredata entity
Also,
I don't have an array controller bound to the table view, the
tableviews datasource outlet is set to the instance of my class that
pulls the xml and processes it,
Many Thanks
Amy Heavey
On 11 Sep 2008, at 18:39, Jamie Hardt wrote:
Ah I see. XML on web - your program - sqlite store that someone
else's program reads/writes.
Looping over the data in the table should just be a matter of going
through all of the items in the table's bound NSArrayController:
//code
NSArray *objectsToLoopThru =
[myArrayControllerWithRecordsFromTheWeb arrangedObjects];
foreach (id oneObject in objectsToLoopThru) {
//create entity
// write entity
}
//endcode
Writing to someone elses data format is a bit trickier, since as
you say, you don't have access to his data model. One alternative
is to use the low-level SQLite API to manual insert rows into his
database, but a better one might be to read out a format that can
be cut/pasted or imported into the third-party's application. Does
the other guy's app have an import function? Since it seems to be
handling people, does it allow contacts to be imported from the
Addressbook or vcards, in which case you could just write out the
scraped rows to the ABAddressBook and use it as a channel.
Just a thought, take or leave. If I were in your situation I would
consider writing to the third party's document as a *last option*,
since there's so many more opportunities for it to break in the
future.
On Sep 11, 2008, at 10:22 AM, Amy Heavey wrote:
I need to add data from the website to the sqlite file created/
used by the cocoa application.
I can pull the data in XML out of the website, and display it in a
tableview (Aaron Hillegass sample code), but now I need to add
that data to my app (stored in an sqlite file)
each row of the tableview contains all of the data needed, eg I
have customers first name, last name, email address, and in the
datamodel there is a Customer Entity (class CustomerEntity) with a
firstName and lastName attributes, and an emailaddresses
relationship.
I don't know how to loop over the tableviewdata creating new
instances of the entity?
Many Thanks
Amy Heavey
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Re: creating new instance of coredata entity
Quite possibly - off to have go,
Thank you,
Many Thanks
Amy Heavey
On 11 Sep 2008, at 19:09, Jamie Hardt wrote:
Oh... Is this what you mean?
NSArray *objectsToLoopThru =
[myArrayControllerWithRecordsFromTheWeb arrangedObjects];
foreach (id oneObjectInTable in objectsToLoopThru) {
NSManagedObject *newObjectToStore = [NSEntityDescription
insertNewObjectForEntityForName:@CustomerEntity
inManagedObjectContext:myMOC];
[newObj setValue:[oneObjectInTable
valueForKey:@firstName] forKey:@firstName];
[newObj setValue:[oneObjectInTable valueForKey:@lastName]
forKey:@lastName];
// etc...
}
On Sep 11, 2008, at 10:58 AM, Amy Heavey wrote:
Thanks,
I have got access to the datamodel, I've imported it into my xcode
project, it's how to actually create and write the entity that i'm
stuck on, all the examples i've found seem to use bindings and add
buttons,
Many Thanks
Amy Heavey
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Re: CoreData, SQLite and GUID
My biggest problem is I don't have access to the source code for the application that creates and uses the sqlite database. I think I'll have to look at creating my own application, Ideally, I need a solution that enables me to share data between machines (so I was thinking of a server/client type solution) but it also needs to run when not connected to the internet/server. I'm a bit stuck at the moment on how to store the data for two situations, Thanks, Many Thanks Amy Heavey On Aug 27, 2008, at 6:30 PM, mmalc crawford wrote: On Aug 27, 2008, at 9:33 AM, Michael Ash wrote: On Wed, Aug 27, 2008 at 5:30 AM, Amy Heavey [EMAIL PROTECTED] wrote: I use an application that I believe is written using CoreData. It is currently quite tedious to enter data into this application, and the data I need entering is already in a mysql database anyway. I'd like to be able to insert this data directly into the SQLite database the application uses. Nothing prevents you from programmatically manipulating your CoreData store. CoreData is not a GUI-only technology. Get your data into some format that your CoreData app can read, and write some code to blast it into your store. This is much more foolproof, and probably easier, than trying to manipulate the SQLite database directly. To take that a step further, in principle there shouldn't be any need to create an intermediate format -- you should be able to write a utility (with or without a GUI) that reads the data from the MySQL database using its native library and create and store managed objects directly. See http://developer.apple.com/ documentation/Cocoa/Conceptual/CoreData/Articles/cdImporting.html for hints as to how to do this efficiently. mmalc ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/amy% 40willowtreecrafts.co.uk This email sent to [EMAIL PROTECTED] ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: CoreData, SQLite and GUID
Do you know where this is? I can't see it in my dev folder (10.4) Many Thanks Amy Heavey On Aug 28, 2008, at 6:20 PM, Aaron Burghardt wrote: There is a good Core Data command-line utility tutorial in the default developer documentation that shows the details of manually setting up the Core Data stack. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
