[appengine-java] Reading Blobstore data
Hello, I'm trying to simply read blobstore data without using the .serve() method. It seems like I can use the .fetchData() method, but the parameters needed are unclear to me and how I would generate them. I just need to read all the bytes. For example if I store a plain/text file in the blobstore, I want to read it as a String so that I can parse it and do something else with it. Any ideas? Thanks, Luca -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] .getKey().getId()
.getKey().getId() returns an incremental number (starts from 1) on the development server. However on the live server (when I deploy it to Google) this number is quite large, for example 22007. How come? Can I get incremental numbers starting from 1 on the live server as it is on the development server? Thanks. Luca -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Some details on how GAE actually works
App Engine has been abstracting all their implementation details away from the developer, which is great. I'm however a little curious in knowing how their infrastructure works... not only how it works but also how it scales geographically. Living in Europe this has a strong impact on my decision to use App Engine or not. Has any detail been delivered by Google on this? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Are urls with /ah/* automatically protected?
These pages are only available on the development server, not when your site goes live. So it should be safe enough :) On Fri, Apr 22, 2011 at 11:18 AM, Marcel Overdijk marceloverd...@gmail.com wrote: I'm wonderinf if urls starting with /ah/* (like /_ah/queue/ __deferred__) are automatically protected or that I should configure a security constraint. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Re: Data being stored in a weird way
Didier, I don't think that has anything to do with the java source file. On Wed, Apr 20, 2011 at 10:53 AM, Amit Pandey amit.s...@gmail.com wrote: Hi Didier, I have almost same problem. I'm not able to store þ (thorn) char in datastore. I'm using String as a data type. Thanks, Amit On Wed, Apr 20, 2011 at 10:08 AM, Didier Durand durand.did...@gmail.com wrote: Hi, Are you using eclipse ? if yes check under File Properties Text File encoding that your file is UTF-8 encoding. I would guess not. So, change it to UTF-8 and your issue should get fixed. regards didier On Apr 19, 6:32 pm, Luca Matteis lmatt...@gmail.com wrote: I posted a question on StackOverflow about my data being stored with weird chars, and it only happens live, which is very strange. Here's the question:http://stackoverflow.com/questions/5707266/google-app-engine-data-bei... Am I missing something? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Data being stored in a weird way
I posted a question on StackOverflow about my data being stored with weird chars, and it only happens live, which is very strange. Here's the question: http://stackoverflow.com/questions/5707266/google-app-engine-data-being-stored-in-a-weird-way Am I missing something? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] What are you opinions about yesterdays announced opensource Cloudcoundry PaaS
I think it's still a mystery so far. They seem to want to follow App Engine's philosophy and free the developer from all the sys-admin work, yet they provide implementation details (MySQL, Redis, and MongoDB are listed on their site). This means that the developer will still need to do some sys-admin work based on the implementation of data-storage they choose, unless they provide APIs that work for all those different implementations - I doubt it since data is stored very differently in MySQL compared to MongoDB. So I think it's just another cloud-hosting provider (think of RackSpace), and I have no idea how they're going to scale MySQL :). On Wed, Apr 13, 2011 at 12:40 PM, Marcel Overdijk marceloverd...@gmail.com wrote: What are you opinions about yesterdays announced opensource Cloudcoundry PaaS compared to Google App Engine? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Owned relationship. Lost reference
I have a Recipe entity that contains two images:
@PersistenceCapable(identityType = IdentityType.APPLICATION, detachable=true)
public class Recipe {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key key;
@Persistent
private MyImage myImage; // full-size image
@Persistent
private MyImage thumb; // 224x230 thumbnail version of the above
When I persist this to the datastore, the images are stored correctly.
However the issue comes when I try referencing the images using
`.getMyImage()` and `.getThumb()`.
They both point to the same object even though I can see in the
datastore viewer that they are two images of different size. If they
are stored in the datastore corretly this means that there's an issue
with how I reference the object I suppose. Why is this?
This is the object I persist, and as you can see the `myImage` and
`thumb` objects are different (not showing the code for them, but
trust me they are).
Recipe recipe = new Recipe(user.getKey(), title, new Text(content),
myImage, thumb, tagsAsStrings);
Any ideas why I keep on referencing the same object?
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Re: [appengine-java] Re: JDO - Updating a One-to-one child
Here's the entire piece of code that handles the update. I changed it
to setAvatar() (line 42) and it's on a `MyUser` object instead of a
Recipe, but it's the same thing:
http://codepad.org/qPo2ZyBX
I also update the 'name' of the user, and the update works fine...
just as I said, the object still points to the first image instead of
the one added.
On Fri, Apr 8, 2011 at 10:11 AM, Ian Marshall ianmarshall...@gmail.com wrote:
Hi Luca,
What's your code for
r.setImage(newImage)
and anything else that might be relevant?
Ian
On Apr 7, 4:25 pm, Luca Matteis lmatt...@gmail.com wrote:
Hello Ian, I tried using your exact piece of code. Still same results.
The recipe still points to the first image instead of the most
recently added one.
On Thu, Apr 7, 2011 at 5:20 PM, Ian Marshall ianmarshall...@gmail.com
wrote:
Do you use transactions?
Instead of your
PersistenceManager pm = PMF.get().getPersistenceManager();
Recipe r = pm.getObjectById(Recipe.class, recKey);
try
{
r.setImage(newImage);
}
finally
{
pm.close();
}
have you tried
PersistenceManager pm = PMF.get().getPersistenceManager();
Transaction tx = pm.currentTransaction();
try
{
tx.begin();
Recipe r = pm.getObjectById(Recipe.class, recKey);
r.setImage(newImage);
tx.commit();
}
finally
{
try
{
if (tx.isActive()) // Because of an exception, say
tx.rollback();
}
finally
{
pm.close();
}
}
On Apr 7, 3:03 pm, Luca Matteis lmatt...@gmail.com wrote:
This is really weird. I cannot find anything on the internet that
could help me. It seems such a simple thing to be editing child
objects and I find it ridiculous that I can't find a solution.
please help
On Thu, Apr 7, 2011 at 11:53 AM, Luca Matteis lmatt...@gmail.com wrote:
Well, I would think the Key has relationship information. The thing is
that I'm able to fetch the image for the recipe, so the relationship
is there somehow. It seems as if setImage() isn't enough for the
linkage to update to the latest image.
On Thu, Apr 7, 2011 at 11:29 AM, Simon Knott knott.si...@gmail.com
wrote:
Yes, that's what I would have expected - how else would a recipe ever
retain
which image it is related to? Is the relationship purely stored
within the
key of the Image?
I must admit that without any knowledge of JDO and its relationship
management, I'm just making wild guesses!
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Re: [appengine-java] Re: JDO - Updating a One-to-one child
The MyUser entity: http://codepad.org/C2qRTTRt and the MyImage entity: http://codepad.org/xR6hhuU8 On Fri, Apr 8, 2011 at 11:00 AM, Simon Knott knott.si...@gmail.com wrote: Can you post the code for your MyUser and the MyImage classes as well? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Re: JDO - Updating a One-to-one child
Argh! Nothing! I just tried making all changes... nothing.. same results :( It's incredible I can't find any example online that involves editing a child owned entity. On Fri, Apr 8, 2011 at 11:41 AM, Simon Knott knott.si...@gmail.com wrote: I've no idea whether it makes any difference, but try changing the following: @Persistent private MyImage avatar; to @Persistent(defaultFetchGroup = true) private MyImage avatar; -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Re: JDO - Updating a One-to-one child
Oh! Oh!!! Great idea I will just edit it instead of creating a new one! DUH! thanks so much On Fri, Apr 8, 2011 at 11:53 AM, Simon Knott knott.si...@gmail.com wrote: Is there any reason you make a new MyImage object? Why can't you just change the MyImage object which already exists in the MyUser object? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Object Manager has been closed - solution other than detaching
Whenever I query something like
public static MyUser getUserInfo(Key userKey) {
PersistenceManager pm = PMF.get().getPersistenceManager();
MyUser myUser, detached = null;
try {
myUser = pm.getObjectById(MyUser.class, userKey);
pm.detachCopy(myUser.getAvatar()); // little worried about
this, but fixes the error
detached = pm.detachCopy(myUser);
} finally {
pm.close();
}
return detached;
}
before closing the PM I detach the object so that I can use the result
of the query after closing the PM. This works fine, however it becomes
a little crazy when my Objects contain child objects that need to be
detached as well.
Is there a better way of getting information from a query without
having to go through the entire result and detach all the objects?
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[appengine-java] JDO - Updating a One-to-one child
I have a Recipe. Each Recipe has an image. So my entity looks something like
@PersistenceCapable
public class Recipe {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key key;
@Persistent
private MyImage myImage;
When I create the Recipe the first time, it works great, the image is
added as well and I can view it. However when I go and update it such
as
PersistenceManager pm = PMF.get().getPersistenceManager();
Recipe r = pm.getObjectById(Recipe.class, recKey);
try {
r.setImage(newImage);
} finally {
pm.close();
}
the new image is added to the data-store, but when I try and fetch it
from within the recipe, the recipe still points to the old image in my
data-store. Is this normal? How can I fix this?
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Re: [appengine-java] Re: JDO - Updating a One-to-one child
Hello Simon,
even if I persist it doing
try {
r.setImage(newImage);
pm.makePersistent(newImage);
} finally {
pm.close();
}
I still get the same results. The interesting thing is that if I
delete the image entity from the datastore, the recipe points to the
next one. Maybe there's some reference issue happening that I need to
fix. Don't know.
On Thu, Apr 7, 2011 at 10:39 AM, Simon Knott knott.si...@gmail.com wrote:
Hi,
I don't personally use JDO, but don't you have to re-put your object?
I don't know how JDO does its dirty checking - I doubt very much that it
will persist modified entities just because you're closing the Persistence
Manager.
Cheers,
Simon
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Re: [appengine-java] Re: JDO - Updating a One-to-one child
It's the same when deployed to GAE. From the live datastore viewer I don't see the children when viewing the Recipe entity itself. The images get stored in another table called Image. Was I suppose to see a reference to the image object directly in the Recipe entity? On Thu, Apr 7, 2011 at 11:08 AM, Simon Knott knott.si...@gmail.com wrote: Have you tried deploying to GAE? You can only see child fields in the datastore viewer in Production. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Re: JDO - Updating a One-to-one child
I don't see the actual Recipe being update with anything. I just see the Image being added in the Image 'table'. But from the datastore viewer there's no attribute in the Recipe 'table'. Hope that's clear. On Thu, Apr 7, 2011 at 10:58 AM, Simon Knott knott.si...@gmail.com wrote: If you look in the datastore admin tool, can you see whether the Recipe is being updated with the new image reference? Are you seeing this problem on Dev or Prod? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Re: JDO - Updating a One-to-one child
Well, I would think the Key has relationship information. The thing is that I'm able to fetch the image for the recipe, so the relationship is there somehow. It seems as if setImage() isn't enough for the linkage to update to the latest image. On Thu, Apr 7, 2011 at 11:29 AM, Simon Knott knott.si...@gmail.com wrote: Yes, that's what I would have expected - how else would a recipe ever retain which image it is related to? Is the relationship purely stored within the key of the Image? I must admit that without any knowledge of JDO and its relationship management, I'm just making wild guesses! -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Re: JDO - Updating a One-to-one child
This is really weird. I cannot find anything on the internet that could help me. It seems such a simple thing to be editing child objects and I find it ridiculous that I can't find a solution. please help On Thu, Apr 7, 2011 at 11:53 AM, Luca Matteis lmatt...@gmail.com wrote: Well, I would think the Key has relationship information. The thing is that I'm able to fetch the image for the recipe, so the relationship is there somehow. It seems as if setImage() isn't enough for the linkage to update to the latest image. On Thu, Apr 7, 2011 at 11:29 AM, Simon Knott knott.si...@gmail.com wrote: Yes, that's what I would have expected - how else would a recipe ever retain which image it is related to? Is the relationship purely stored within the key of the Image? I must admit that without any knowledge of JDO and its relationship management, I'm just making wild guesses! -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Re: JDO - Updating a One-to-one child
Hello Ian, I tried using your exact piece of code. Still same results.
The recipe still points to the first image instead of the most
recently added one.
On Thu, Apr 7, 2011 at 5:20 PM, Ian Marshall ianmarshall...@gmail.com wrote:
Do you use transactions?
Instead of your
PersistenceManager pm = PMF.get().getPersistenceManager();
Recipe r = pm.getObjectById(Recipe.class, recKey);
try
{
r.setImage(newImage);
}
finally
{
pm.close();
}
have you tried
PersistenceManager pm = PMF.get().getPersistenceManager();
Transaction tx = pm.currentTransaction();
try
{
tx.begin();
Recipe r = pm.getObjectById(Recipe.class, recKey);
r.setImage(newImage);
tx.commit();
}
finally
{
try
{
if (tx.isActive()) // Because of an exception, say
tx.rollback();
}
finally
{
pm.close();
}
}
On Apr 7, 3:03 pm, Luca Matteis lmatt...@gmail.com wrote:
This is really weird. I cannot find anything on the internet that
could help me. It seems such a simple thing to be editing child
objects and I find it ridiculous that I can't find a solution.
please help
On Thu, Apr 7, 2011 at 11:53 AM, Luca Matteis lmatt...@gmail.com wrote:
Well, I would think the Key has relationship information. The thing is
that I'm able to fetch the image for the recipe, so the relationship
is there somehow. It seems as if setImage() isn't enough for the
linkage to update to the latest image.
On Thu, Apr 7, 2011 at 11:29 AM, Simon Knott knott.si...@gmail.com wrote:
Yes, that's what I would have expected - how else would a recipe ever
retain
which image it is related to? Is the relationship purely stored within
the
key of the Image?
I must admit that without any knowledge of JDO and its relationship
management, I'm just making wild guesses!
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Re: [appengine-java] Re: App Engine identifier. Key vs Id
Thanks for this. But is there a way to get a specific entity using the
ID/Name value generated by the data-store?
On Wed, Apr 6, 2011 at 8:19 AM, Ian Marshall ianmarshall...@gmail.com wrote:
I use the following code to define my persistent entity classes in
JDO.
I have find my persistent entities by encoded key string or ID - my
choice.
Enjoy?
@PersistenceCapable(identityType = IdentityType.APPLICATION,
detachable = true)
public class MyPersistentClass implements Serializable
{
private static final long serialVersionUID = 1L;
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
@Extension(vendorName=datanucleus, key=gae.encoded-pk,
value=true)
private String sEncodedKey;
@Persistent
@Extension(vendorName=datanucleus, key=gae.pk-id, value=true)
private Long loID;
//
// Other persistent data members...
//
public String getEncodedKey()
{
return sEncodedKey;
}
public Long getID()
{
return loID;
}
//
// Getter and setter methods for
// the other persistent data members...
//
}
On Apr 5, 3:44 pm, Luca Matteis lmatt...@gmail.com wrote:
To identify my JDO objects in Google App Engine I use the Key type. It
works fine but when I need to pass this through urls it gets sort of
long.
For
example:http://mysite.com/user/aghtaWx1LWFwcHIZCxIGTXlVc2VyGAMMCxIHTXlJbWFnZR...
When viewing my entities in my admin viewer I can see that the
data-store also sets an id for my entity object, which seems to be
an incremental numeric value, which is quite short compared to the Key
string. Can I use this to grab information on my object? How do I do
this? I tried using getObjectbyId() with the id instead of the key...
it doesn't work.
Also, should I be using a Long type to identify objects instead of Key types?
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Re: [appengine-java] any where i can hire people to do development on app engine in singapore?
Just hire good Java developers. Competent Java developers are also competent Google App Engine developers. On Wed, Mar 23, 2011 at 7:00 PM, Elvin Li zelrealmem...@gmail.com wrote: looking for competent developers -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Re: Blobstore API vs Datastore API
I decided to go with datastore since I'll be storing simple thumbnail images - nothing more than 100kb. I'm a bit afraid of the 30s limit but I suppose it makes sense for Google. I work for a bioinformatics group known at global level and I'm trying to show my team the power of App Engine; hopefully I can give them enough good examples to make a radical business change happen towards App Engine. It's funny because some colleagues have doubted the uptime of Google and disaster recovery scene, saying that we should have in-house hosting for reliability - but I find it ridiculous because there's a lot more chance of our in-house network going down rather than Google going down. Thanks for your help. Luca On 3/19/11, branflake2267 branflake2...@gmail.com wrote: The credit option has a budget and you can set it real low. Its unlikely unless you have huge amount of resource use that you'll go over. I've only had cents billed on my upload demo due to the amount of data stored. Brandon Donnelson http://gwt-examples.googlecode.com -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Why does google set quotas on their API calls?
From the Image Java API page: Each Images service request counts toward the Image Manipulation API Calls quota. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Re: Why does google set quotas on their API calls?
Sorry, clicked on send before finishing my question. Why does AppEngine set API limitations when I could just as easily use a third-party library for manipulation and avoid this limitation? Luca On Mon, Mar 14, 2011 at 8:08 PM, Luca Matteis lmatt...@gmail.com wrote: From the Image Java API page: Each Images service request counts toward the Image Manipulation API Calls quota. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Re: Why does google set quotas on their API calls?
Ok. Thanks for the information. I'm still new at this cloud thing, and it looks great. On Mon, Mar 14, 2011 at 8:29 PM, Jay Young jayyoung9...@gmail.com wrote: Because when you do image transformations, you are sending an API to another piece of Google's infrastructure, which I would assume is highly optimized for doing such things. If you do it in your own code, you'll probably pay more in CPU cost than you would for the API call. If it's just a matter of bumping into the number of times you are allowed to make those API calls, let them know. They've been known to relax some quotas for users with real needs. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] JSP error output using dev_appserver (appengine's development server)
When my JSP pages fail for some reason I can't find where the development server puts the error output information. Most web-servers just return a formatted HTML page showing the cause of the JSP error but the built-in development web-server appengine uses doesn't. Where can I get this information? Thanks. Luca -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Blobstore Java API - people can upload whatever they want with no control
I have started using the Bloblstore Java API: http://code.google.com/appengine/docs/java/blobstore/overview.html It seems like the upload form goes to something like: form action=/_ah/upload/agRtaWx1chsLEhVfX0Jsb2JVcGxvYWRTZXNzaW9uX18YTww This is part of appengine, it's not my code. This means I can't prevent uploads of a given type or uploads of a given length. They get loaded into my datastore under __BlobInfo__ no matter what. Isn't this sort of bad? I don't want to have my datastore be filled with things even though it's google storing the data. Bots would just use it to upload spam. I want the upload to happen only by some means of authentication. Any ideas? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Re: Blobstore Java API - people can upload whatever they want with no control
So you're saying I should only generate the upload key url if the user is authenticated? And that would make it secure? avoid spam and such? On Fri, Mar 11, 2011 at 12:32 PM, Didier Durand durand.did...@gmail.com wrote: Hi, You're right: you can't control WHAT (size, etc...) the users upload but you can control IF they upload: the key after /upload is generated by App Engine and has to be a valid one (not too old, not used yet, etc,,) to be usable for an update. If you generate such an upload for authentified users, it gets pretty secure. What else you be looking for ? If it size, or content or something equivalent that means anyway that you have to get out of the browser sandbox in your application (via java applet, etc..) in order to do the additional controls you need: a regular web app can't access and check local files because of the sandbox. regards didier On Mar 11, 12:07 pm, Luca Matteis lmatt...@gmail.com wrote: I have started using the Bloblstore Java API:http://code.google.com/appengine/docs/java/blobstore/overview.html It seems like the upload form goes to something like: form action=/_ah/upload/agRtaWx1chsLEhVfX0Jsb2JVcGxvYWRTZXNzaW9uX18YTww This is part of appengine, it's not my code. This means I can't prevent uploads of a given type or uploads of a given length. They get loaded into my datastore under __BlobInfo__ no matter what. Isn't this sort of bad? I don't want to have my datastore be filled with things even though it's google storing the data. Bots would just use it to upload spam. I want the upload to happen only by some means of authentication. Any ideas? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Re: Blobstore Java API - people can upload whatever they want with no control
Thanks, I think I got it. So basically you want to show the %blobstoreService.createUploadUrl(/upload)% only to people that should upload. Luca On Fri, Mar 11, 2011 at 2:21 PM, Didier Durand durand.did...@gmail.com wrote: Hi, I don't exactly know what you mean by secure but having only the logged in people be allowed to upload will already significantly reduce spam. And then, you can use captchas to make sure it's a human, etc. regards didier On Mar 11, 1:58 pm, Luca Matteis lmatt...@gmail.com wrote: So you're saying I should only generate the upload key url if the user is authenticated? And that would make it secure? avoid spam and such? On Fri, Mar 11, 2011 at 12:32 PM, Didier Durand durand.did...@gmail.com wrote: Hi, You're right: you can't control WHAT (size, etc...) the users upload but you can control IF they upload: the key after /upload is generated by App Engine and has to be a valid one (not too old, not used yet, etc,,) to be usable for an update. If you generate such an upload for authentified users, it gets pretty secure. What else you be looking for ? If it size, or content or something equivalent that means anyway that you have to get out of the browser sandbox in your application (via java applet, etc..) in order to do the additional controls you need: a regular web app can't access and check local files because of the sandbox. regards didier On Mar 11, 12:07 pm, Luca Matteis lmatt...@gmail.com wrote: I have started using the Bloblstore Java API:http://code.google.com/appengine/docs/java/blobstore/overview.html It seems like the upload form goes to something like: form action=/_ah/upload/agRtaWx1chsLEhVfX0Jsb2JVcGxvYWRTZXNzaW9uX18YTww This is part of appengine, it's not my code. This means I can't prevent uploads of a given type or uploads of a given length. They get loaded into my datastore under __BlobInfo__ no matter what. Isn't this sort of bad? I don't want to have my datastore be filled with things even though it's google storing the data. Bots would just use it to upload spam. I want the upload to happen only by some means of authentication. Any ideas? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group athttp://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Blobstore API vs Datastore API
After spending almost half a day implementing the Blobstore API locally I realized only after uploading that it actually to have billing enabled in order to work. I'm not exactly happy with that because I wish the dev_appserver would've told me. Anyhow, I don't feel like giving out my credit-card to Google for this feature since I just want to test my little project and how it behaves, performance wise, with Google's free option. So after googling a bit I found this: http://stackoverflow.com/questions/1513603/how-to-upload-and-store-an-image-with-google-app-engine-java Which basically uses the datastore to store a Blob of the image. I'm wondering, if this is possible, why is Google charging for the Blobstore API? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Re: Blobstore API vs Datastore API
Is it possible to store the image directly on disk, as a resource? On 3/11/11, Simon Knott knott.si...@gmail.com wrote: The datastore can handle blobs with a maximum size of 1MB, whereas the blobstore can handle blobs of 2GB. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Can I set GAE's dev_appserver to automatically reload context when I change .class files?
Hello everybody! I'm using Google AppEngine with their built in web server. My development goes about in a simple way: I make changes to my .java sources or .jsp and compile using ant and to see the changes I have to restart the development server. I'm wondering if there's a way I can avoid this last step of restarting my development server - somehow refresh the cached classes context of my web-server. The options provided by Google on this dev server are quite limited and am wondering if there's a better way. I would like to avoid using something like JRebel which I could buy, but for this simple project I'm just wondering if I can remove the burden of restarting my web-server... otherwise I'll live with it. Thanks. Luca -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
