Re: WebObjects and dependency injection (DI)
I'm not sure you understand... the String thing is only the
bottleneck. I have caller code like:
ERXSQLHelper sqlHelper = ERXSQLHelper.newSQLHelper(ec, model.name
());
ERXSQLHelper sqlHelper = ERXSQLHelper.newSQLHelper(ec, dbc);
ERXSQLHelper sqlHelper = ERXSQLHelper.newSQLHelper(ec,
channel);
Surely you don't suggest I need to create a "module" in every top-
level caller?
My argument being, I have a lot of code that depends on various
"services" and their instantiation. But 90% of the time, this code
depends on user input, program state and external stuff. It's very
rare that I actually know at compile time what implementation I have.
We normally use Class.forName().newInstance() in some way or other to
handle that. So can DI help me there? If yes, how?
And Kieran: properties are there to make things *easier* I wouldn't
want to avoid if's at the cost of putting every constructor in
there... I dread the guy who has to deal with that after you...
Cheers, Anjo
Am 22.09.2009 um 00:11 schrieb Henrique Prange:
Hi Anjo,
You would not need a static method to create new ERXSQLHelper
objects if you were using a DI container. For example, using Guice
you could declare a helper property that must be injected.
@Inject
ERXSQLHelper helper;
If you were too lazy you could let the user define which
implementation to use. For example, using Guice this is achieved
with a Module with the following binding:
bind(ERXSQLHelper.class).to(OracleSQLHelper.class);
If I had to implement this using Guice, I would create an
ERXSQLHelper provider that would return the right ERXSQLHelper based
on the chosen database. Of course, to avoid the same code (nested
ifs) inside the provider, I would refactor the way the database type
is defined too.
IMHO, one advantage of this approach is I could create my own
extension of ERXSQLHelper class and bind to all ERXSQLHelper
declarations easily. I just need to create my own Module with the
following code:
bind(ERXSQLHelper.class).to(MyOwnSQLHelper.class);
I could do the same thing with the current implementation, but I
need to set a property that is not type safe and you had to write a
lot of boilerplate code to support this.
Guice fail fast mechanism also helps to find problems earlier. If
something is wrong with the bindings, an exception is thrown as soon
as you create the Injector. In your example, I would get a
NoClassDefFound in runtime, during a very important presentation, of
course. :p
And last, but not least, you could bind a MockERXSQLHelper class
when unit testing classes that depend upon ERXSQLHelper.
Cheers,
Henrique
Anjo Krank wrote:
U-huh. So how about a real world example and not these cooked up
things. Take a look at the ERXSQLHelper. Depending on various types
of input it creates a concrete subclass. Can DI change this to sth
more "clean"?
Cheers, Anjo
public static ERXSQLHelper newSQLHelper(String
databaseProductName) {
synchronized (_sqlHelperMap) {
ERXSQLHelper sqlHelper = _sqlHelperMap.get(databaseProductName);
if (sqlHelper == null) {
try {
String sqlHelperClassName = ERXProperties.stringForKey
(databaseProductName + ".SQLHelper");
if (sqlHelperClassName == null) {
if (databaseProductName.equalsIgnoreCase("frontbase")) {
sqlHelper = new FrontBaseSQLHelper();
}
else if (databaseProductName.equalsIgnoreCase("mysql")) {
sqlHelper = new MySQLSQLHelper();
}
else if (databaseProductName.equalsIgnoreCase("oracle")) {
sqlHelper = new OracleSQLHelper();
}
else if (databaseProductName.equalsIgnoreCase
("postgresql")) {
sqlHelper = new PostgresqlSQLHelper();
}
else if (databaseProductName.equalsIgnoreCase
("openbase")) {
sqlHelper = new OpenBaseSQLHelper();
}
else if (databaseProductName.equalsIgnoreCase("derby")) {
sqlHelper = new DerbySQLHelper();
}
else if (databaseProductName.equalsIgnoreCase
("microsoft")) {
sqlHelper = new MicrosoftSQLHelper();
}
else {
try {
sqlHelper = (ERXSQLHelper) Class.forName
(ERXSQLHelper.class.getName() + "$" + databaseProductName +
"SQLHelper").newInstance();
}
catch (ClassNotFoundException e) {
sqlHelper = new ERXSQLHelper();
}
}
}
else {
sqlHelper = (ERXSQLHelper) Class.forName
(sqlHelperClassName).newInstance();
}
_sqlHelperMap.put(databaseProductName, sqlHelper);
}
catch (Exception e) {
throw new NSForwardException(e, "Failed to create sql
helper for the database with the product name '" +
databaseProductName + "'.");
}
}
return sqlH
Statistik overlay - how to?
Hello, has anyone implemented a statistik overlay and can give me a hint? I see two possible way to do so: first- make the links unique with a id which is part of the links, but that seems not right to me, that two links, which are pointing to the same page should be different, even if only by a parameter. I could imagine this could work via javascript. either triggering a function with onclick, but... can I call a void function on the server by javascript - function returning nothing but just trigger a write in a textfile or a database? Or could a javascript insert this into the header or send it as hidden parameter i.e. add it to the link before sending it or submitting a hidden form... but submitting a form will not work with a normal links, will it? That would be the easiest, perhaps, to submit a form where one writes an id in via javascript before... Well, I'm a bit lost here, so, is there a common praxis to archieve this? I do have a session, but that will not really help me here, right? Sorry for this off topic post. Thanks for any help. Regards Ute ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Rewrite Rule
Upps, I think so. At which Property do I have to look to know. I run in deployment and definitley come via apache but I have not set anything deliberately. I'm a new wonder user so maybe I overlooked something...? Am 21.09.2009 um 18:17 schrieb Guido Neitzer: Are you running in WebServer connect mode? cug -- http://www.event-s.net On 20. Sep. 2009, at 02:02 , ute Hoffmann wrote: Hi, should this work for applications which have a session as well, or will it work only for sessionless apps? * * er.extensions.ERXApplication.replaceApplicationPath.pattern=/ cgi-bin/WebObjects/YourApp.woa * er.extensions.ERXApplication.replaceApplicationPath.replace=/ yourapp * * * and in Apache 2.2: * * RewriteRule ^/yourapp(.*)$ /cgi-bin/WebObjects/YourApp.woa$1 [PT,L] * * * or Apache 1.3: * * RewriteRule ^/yourapp(.*)$ /cgi-bin/WebObjects/YourApp.woa$1 [P,L] * I put it into the properties file of an Application, but nothing changed in the way the URL's were displayed. I use WOHyperlinks which call directActions with parameters and have a session. I have the Application extend a Application class in a framework which then in turn extends ERXApplication. Could that be part of my problem? But the Application starts up ok, and the added properties are in the logfile, so I THINK they should be seen... Probably this is very basic, sorry. Thanks for your help. Regards, Ute ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/guido.neitzer %40gmail.com This email sent to guido.neit...@gmail.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: DirectAction with cookies and session
On Sep 21, 2009, at 1:19 PM, Fred Wells wrote: Hello, If I missed this I apologize but I can't seem to find anything on this. I'm trying to test out SWFUpload within one of my WO apps. It is currently set up to store sessionID in cookies. SWFUpload needs a post-upload URL for processing, I need the session information to be available to that URL. How are you making the URL? Cookies should be OK. Or the URL can have ?wosid= I can't seem to get DirectAction to 'isSessionIDInRequest' always comes up false and 'sessionID' always is null. I've tried constructing the URL through WOActionURL and 'directActionURLForActionNamed'. WOActionURL? WOContext you mean? If you are doing this in Java, WOContext.directActionURLForActionNamed should do what you want. Both make a [what looks like] a valid directaction URL. But when sent it never finds the session from the cookie. Is there something else I have to do when trying to use a DirectAction in a session? Log out the request headers. Is the cookie in there? Chuck -- Chuck Hill Senior Consultant / VP Development Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who are trying to solve specific problems. http://www.global-village.net/products/practical_webobjects ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Very interesting case
On Sep 21, 2009, at 2:16 PM, Don Lindsay wrote:
I know, I have been piddling with it and probably violated many
commandments.
That is not something that you can do and expect sane results. It is
a binary sort of thing. Either you lock correctly and obey the
commandments, or EOF.doCrazyThingsAtRandom(true). Your call.
You seem to have found a work around, but that does not address why
the EO was not getting saved. I strongly suspect that you have a
latent bug lurking in the background.
Chuck
Let me explain what I am doing and see if anyone has any insight.
I have a datamodel with the following:
Users (identifier Integer, username string, password string)
Pages (identifier Integer, PageDescription string, active integer,
position Integer)
Questions (identifier integer, questiontext string, pageidentifier
integer, active integer)
Question Lookup Values (identifier, descriptivetext string, active
integer)
UserAnswers(identifier integer, useridentifier integer,
questionidentifier integer, answeridentifier integer)
Pretty simple. A user can access any page, any question on a page,
and answer a question only once. So I created an entity:
useranswers ( User, Question, Answer(would contain a question
lookup) )
Pages can have one or more questions,
Questions can have zero or more Question Lookup Values.
More than one question can relate to a question lookup value.
So the relationship looks like this:
Pages <-->> Questions <<-->> Lookup Values
User <-->> UserAnswers <<--> Question
So what I have done is create a component that takes a User as a
property when it is created setUser(...).
I then created a WODisplayGroup for Pages with no detail.
I then created a WODisplayGroup for Questions with detail pointing
to pages.
I then created a WODisplayGroup for UserAnswers with detail pointing
to questions.
The issue I have with the UserAnswers displaygroup is that it also
requires a qualification to a User as well as a question. N
problemo, I use the
queryMatch().setValueForKey(theUserObject,"theUser").
Now here is where I run into issues, Question.theAnswers
relationship returns an NSArray because it is a to-many. How do I
bind this to the selection property of a WOPopupButton, I can't that
I know of. <>
Don
On Sep 21, 2009, at 4:31 PM, Chuck Hill wrote:
On Sep 21, 2009, at 1:17 PM, Don Lindsay wrote:
Hello;
I have a component that I am updating a table of answers based on
selections made by the user from a worepitition.
The code being executed is:
try {
String sEoQualifierText = "page=";
sEoQualifierText +=
Integer.toString((Integer)thePage().valueForKey("identifier"));
sEoQualifierText += " and question=";
sEoQualifierText +=
Integer.toString((Integer)theQuestion().valueForKey("identifier"));
sEoQualifierText += " and user=";
sEoQualifierText += Integer.toString((Integer)
((EOEnterpriseObject)theUser).valueForKey("identifier"));
EOQualifier oQual =
EOQualifier.qualifierWithQualifierFormat(sEoQualifierText,null);
What are you doing? And why? What is
thePage().valueForKey("identifier")? Home brew binding sync?
Generic Record based EOs with no Java classes?
Wonder's ERXQ will make your life so much easier to read and
maintain.
EOFetchSpecification oFetch = new
EOFetchSpecification("UserAnswers",oQual,null);
NSArray aAnswer =
oEO().objectsWithFetchSpecification(oFetch);
oEO().lock();
Nooo.
Why lock like that? Why not just gouge your eyes out and hammer
pencils into your ears? It will be quicker and less painful and
just as effective.
Locking like that is useless and wrong and just won't work. Ever.
Use ERXEC or the MultiECLockManager. Your chances of doing it
right another other way approach null.
((UserAnswers
)aAnswer
.objectAtIndex(0)).setTheAnswer((QuestionLookup)theAnswer());
//((EOEnterpriseObject)aAnswer.objectAtIndex(0)).willChange();
oEO().unlock();
//System.out.println("updates to be saved: " +
oEO().updatedObjects());
oEO().saveChanges();
} catch (Exception e) {
e.printStackTrace();
System.out.println(e.getMessage());
System.out.println("hiss, didn't work");
}
if (theAnswer!=null) {
System.out.println("append to response firing "+
(String)theAnswer.valueForKey("desc"));
} else {
System.out.println("append to response firing but the answer is
null");
}
ThePage is an item from a listing of available pages repetition.
TheQuestion is an item from listing of questions repitition.
TheUser is the user who is currently working with the page
Re: AjaxAutoComplete - is it possible to have the equivalent of a noDisplayString?
On 22/09/2009, at 6:08 AM, J Stephanos wrote: David: > Unfortunately the text triggers an immediate search on the default string. It doesn't in my case. It is working as expected for me per the AjaxTextHinter javadoc example. I experience the same behaviour as David. AjaxTextHinter does work as per the example, but the presence of the text is seen as a change by AjaxObserveField. Sharpy. ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
[Solved] Re: Very interesting case
I was making it too difficult. I was able to solve the issue by using
the UserAnswers as the primary Display Group.
Don
On Sep 21, 2009, at 5:16 PM, Don Lindsay wrote:
I know, I have been piddling with it and probably violated many
commandments. Let me explain what I am doing and see if anyone has
any insight.
I have a datamodel with the following:
Users (identifier Integer, username string, password string)
Pages (identifier Integer, PageDescription string, active integer,
position Integer)
Questions (identifier integer, questiontext string, pageidentifier
integer, active integer)
Question Lookup Values (identifier, descriptivetext string, active
integer)
UserAnswers(identifier integer, useridentifier integer,
questionidentifier integer, answeridentifier integer)
Pretty simple. A user can access any page, any question on a page,
and answer a question only once. So I created an entity:
useranswers ( User, Question, Answer(would contain a question
lookup) )
Pages can have one or more questions,
Questions can have zero or more Question Lookup Values.
More than one question can relate to a question lookup value.
So the relationship looks like this:
Pages <-->> Questions <<-->> Lookup Values
User <-->> UserAnswers <<--> Question
So what I have done is create a component that takes a User as a
property when it is created setUser(...).
I then created a WODisplayGroup for Pages with no detail.
I then created a WODisplayGroup for Questions with detail pointing
to pages.
I then created a WODisplayGroup for UserAnswers with detail pointing
to questions.
The issue I have with the UserAnswers displaygroup is that it also
requires a qualification to a User as well as a question. N
problemo, I use the
queryMatch().setValueForKey(theUserObject,"theUser").
Now here is where I run into issues, Question.theAnswers
relationship returns an NSArray because it is a to-many. How do I
bind this to the selection property of a WOPopupButton, I can't that
I know of. <>
Don
On Sep 21, 2009, at 4:31 PM, Chuck Hill wrote:
On Sep 21, 2009, at 1:17 PM, Don Lindsay wrote:
Hello;
I have a component that I am updating a table of answers based on
selections made by the user from a worepitition.
The code being executed is:
try {
String sEoQualifierText = "page=";
sEoQualifierText +=
Integer.toString((Integer)thePage().valueForKey("identifier"));
sEoQualifierText += " and question=";
sEoQualifierText +=
Integer.toString((Integer)theQuestion().valueForKey("identifier"));
sEoQualifierText += " and user=";
sEoQualifierText += Integer.toString((Integer)
((EOEnterpriseObject)theUser).valueForKey("identifier"));
EOQualifier oQual =
EOQualifier.qualifierWithQualifierFormat(sEoQualifierText,null);
What are you doing? And why? What is
thePage().valueForKey("identifier")? Home brew binding sync?
Generic Record based EOs with no Java classes?
Wonder's ERXQ will make your life so much easier to read and
maintain.
EOFetchSpecification oFetch = new
EOFetchSpecification("UserAnswers",oQual,null);
NSArray aAnswer =
oEO().objectsWithFetchSpecification(oFetch);
oEO().lock();
Nooo.
Why lock like that? Why not just gouge your eyes out and hammer
pencils into your ears? It will be quicker and less painful and
just as effective.
Locking like that is useless and wrong and just won't work. Ever.
Use ERXEC or the MultiECLockManager. Your chances of doing it
right another other way approach null.
((UserAnswers
)aAnswer
.objectAtIndex(0)).setTheAnswer((QuestionLookup)theAnswer());
//((EOEnterpriseObject)aAnswer.objectAtIndex(0)).willChange();
oEO().unlock();
//System.out.println("updates to be saved: " +
oEO().updatedObjects());
oEO().saveChanges();
} catch (Exception e) {
e.printStackTrace();
System.out.println(e.getMessage());
System.out.println("hiss, didn't work");
}
if (theAnswer!=null) {
System.out.println("append to response firing "+
(String)theAnswer.valueForKey("desc"));
} else {
System.out.println("append to response firing but the answer is
null");
}
ThePage is an item from a listing of available pages repetition.
TheQuestion is an item from listing of questions repitition.
TheUser is the user who is currently working with the page.
The entity has 4 attributes (user, page, question, answer).
When I turn on EO Debugging I see that an update is made, but when
I check the database the answer is always null. I do not get any
errors in the logs. If I had an error I could start working it
Re: WebObjects and dependency injection (DI)
Hi Anjo, Anjo Krank wrote: Just so I know: does DI make anything simpler aside from unit testing? Is it worth the cost of un-readbility and un-debugablity? I mean, for foreign code i totally rely on eclipse call graphs... these are a nightmare with interfaces, not to mention missing constructors. You can produce detailed object graph description using Guice Grapher extension (of course, you must use Guice as a DI container). I've never tried it, but it seems to work. There is also a Guice plug-in for Eclipse that promises to help in this direction. Cheers, Henrique Cheers, Anjo Am 21.09.2009 um 21:17 schrieb Andrus Adamchik: Hi Henrique, Nice, thanks for sharing this info. Yeah, going through WOApplication and WOComponentDefinition, I realized I was too optimistic. Most interesting methods that would've enabled DI integration are all private. Quite a bit of code to rewrite to make it work. I was even thinking of limiting injection to just the Application class. Great that you are willing to open source your work in this area. Even if you load your code in its current state to a public SVN (ObjectStyle.org is always an option) or git somewhere, it will be a rather helpful example. Cheers, Andrus - Andrus Adamchik Apache Cayenne ORM: http://cayenne.apache.org/ Creator of Cayenne, VP Apache Software Foundation On Sep 21, 2009, at 6:18 PM, Henrique Prange wrote: Hi Andrus, Andrus Adamchik wrote: I know it is not the traditional "WO way" of doing things, but from my experience using a dependency injection container in your app (Spring, Guice, etc.) is one single thing that you can do to dramatically improve the design quality, and produce flexible and maintainable code. We have been using Guice with WO for some time in our projects. Our code become easier to test without requiring too much boilerplate code using a DI container. WO does a bit of that on its own (such as session and application injection in components), but doesn't bundle a container that a developer could use for the custom "services" (unlike say Tapestry, that does have a DI container at its core). Say I have a WO application and I'd like to use Spring or Guice to inject custom services in the WOComponents, instead of looking them up in WOApplication (or worse - defining them as static singletons somewhere). This sounds easy on the surface. I don't remember all the component creation internals now (it's been a while since I poked around the framework code), but I am pretty sure I can create them with my own factory that is DI container aware. On the other hand (also because I've been out of the loop on WO for quite some time), I am sure I am missing some pieces of the puzzle that would make such setup less practical or outright painful. Instead of changing component creation internals, we've created an extension of ERXComponent that obtain the injector and inject the required members. It is not a perfect solution (you can't use constructor injection this way), but it is easy to implement. This and the fact that DI capabilities don't seem to bother the rest of the community, I figured I'd ask the list on your opinions, while I am trying to wire this thing up in the background. So anybody played with DI-on-WO in some form with any success? We have an audit framework completely based on Guice. We have created extensions of other important classes to make it possible, like ERXGenericRecord and ERXEC and we have created a @WOSessionScoped scope to create/obtain objects per WOSession. We are planning to create an open source framework with this stuff. We are just polishing what we've done to use some new features of Guice 2.0. Cheers, Henrique ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/anjo%40krank.net This email sent to a...@krank.net ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/hprange%40gmail.com This email sent to hpra...@gmail.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: WebObjects and dependency injection (DI)
Hi Anjo,
You would not need a static method to create new ERXSQLHelper objects if
you were using a DI container. For example, using Guice you could
declare a helper property that must be injected.
@Inject
ERXSQLHelper helper;
If you were too lazy you could let the user define which implementation
to use. For example, using Guice this is achieved with a Module with the
following binding:
bind(ERXSQLHelper.class).to(OracleSQLHelper.class);
If I had to implement this using Guice, I would create an ERXSQLHelper
provider that would return the right ERXSQLHelper based on the chosen
database. Of course, to avoid the same code (nested ifs) inside the
provider, I would refactor the way the database type is defined too.
IMHO, one advantage of this approach is I could create my own extension
of ERXSQLHelper class and bind to all ERXSQLHelper declarations easily.
I just need to create my own Module with the following code:
bind(ERXSQLHelper.class).to(MyOwnSQLHelper.class);
I could do the same thing with the current implementation, but I need to
set a property that is not type safe and you had to write a lot of
boilerplate code to support this.
Guice fail fast mechanism also helps to find problems earlier. If
something is wrong with the bindings, an exception is thrown as soon as
you create the Injector. In your example, I would get a NoClassDefFound
in runtime, during a very important presentation, of course. :p
And last, but not least, you could bind a MockERXSQLHelper class when
unit testing classes that depend upon ERXSQLHelper.
Cheers,
Henrique
Anjo Krank wrote:
U-huh. So how about a real world example and not these cooked up things.
Take a look at the ERXSQLHelper. Depending on various types of input it
creates a concrete subclass. Can DI change this to sth more "clean"?
Cheers, Anjo
public static ERXSQLHelper newSQLHelper(String databaseProductName) {
synchronized (_sqlHelperMap) {
ERXSQLHelper sqlHelper = _sqlHelperMap.get(databaseProductName);
if (sqlHelper == null) {
try {
String sqlHelperClassName =
ERXProperties.stringForKey(databaseProductName + ".SQLHelper");
if (sqlHelperClassName == null) {
if (databaseProductName.equalsIgnoreCase("frontbase")) {
sqlHelper = new FrontBaseSQLHelper();
}
else if (databaseProductName.equalsIgnoreCase("mysql")) {
sqlHelper = new MySQLSQLHelper();
}
else if (databaseProductName.equalsIgnoreCase("oracle")) {
sqlHelper = new OracleSQLHelper();
}
else if (databaseProductName.equalsIgnoreCase("postgresql")) {
sqlHelper = new PostgresqlSQLHelper();
}
else if (databaseProductName.equalsIgnoreCase("openbase")) {
sqlHelper = new OpenBaseSQLHelper();
}
else if (databaseProductName.equalsIgnoreCase("derby")) {
sqlHelper = new DerbySQLHelper();
}
else if (databaseProductName.equalsIgnoreCase("microsoft")) {
sqlHelper = new MicrosoftSQLHelper();
}
else {
try {
sqlHelper = (ERXSQLHelper)
Class.forName(ERXSQLHelper.class.getName() + "$" + databaseProductName +
"SQLHelper").newInstance();
}
catch (ClassNotFoundException e) {
sqlHelper = new ERXSQLHelper();
}
}
}
else {
sqlHelper = (ERXSQLHelper)
Class.forName(sqlHelperClassName).newInstance();
}
_sqlHelperMap.put(databaseProductName, sqlHelper);
}
catch (Exception e) {
throw new NSForwardException(e, "Failed to create sql helper
for the database with the product name '" + databaseProductName + "'.");
}
}
return sqlHelper;
}
}
Am 21.09.2009 um 23:24 schrieb Andrew Lindesay:
Hi Anjo;
I guess this could be helpful in _some_ situations; I take for
example, the Jetty server. Jetty can have a number of "handlers"
added to it. Each handler does something like re-writes, feeds
disk-based content, runs servlets etc.. etc.. The Jetty authors could
not have envisaged all of the possible handlers that might have been
written for Jetty, but because of the configuration style which
follows the same line of thinking as Andrus is describing, it is
possible to configure additional handlers. So that's a good example
of where this seems quite helpful and Andrus' other examples also feel
like good examples, but I agree that it seems like over-kill for many
situations.
cheers.
Thanks for the write-up, but yeah, this can all be achieved w/o it. I
really don't see why I shouldn't configure my app with
if(Configration.isStaging())... and instead use DI. At least my way I
easily find all the occurrences and have full logic support
if(!Configuration.isStaging()). How is D
Re: WebObjects and dependency injection (DI)
To keep stuff like this below 'clean', I define a list of properties
and lookup the property to get the class name
er
.extensions.sqlHelper.className.mysql=er.extensions.jdbc.MySQLSQLHelper
er.extensions.sqlHelper.className.frontbase
=er.extensions.jdbc.FrontBaseSQLHelper
etc.
.. and create it like this
Class.forName( "er.extensions.sqlHelper.className." +
databaseProductName ).newInstance()
YMMV, Kieran
On Sep 21, 2009, at 5:30 PM, Anjo Krank wrote:
U-huh. So how about a real world example and not these cooked up
things. Take a look at the ERXSQLHelper. Depending on various types
of input it creates a concrete subclass. Can DI change this to sth
more "clean"?
Cheers, Anjo
public static ERXSQLHelper newSQLHelper(String databaseProductName) {
synchronized (_sqlHelperMap) {
ERXSQLHelper sqlHelper = _sqlHelperMap.get(databaseProductName);
if (sqlHelper == null) {
try {
String sqlHelperClassName =
ERXProperties.stringForKey(databaseProductName + ".SQLHelper");
if (sqlHelperClassName == null) {
if (databaseProductName.equalsIgnoreCase("frontbase")) {
sqlHelper = new FrontBaseSQLHelper();
}
else if (databaseProductName.equalsIgnoreCase("mysql")) {
sqlHelper = new MySQLSQLHelper();
}
else if (databaseProductName.equalsIgnoreCase("oracle")) {
sqlHelper = new OracleSQLHelper();
}
else if
(databaseProductName.equalsIgnoreCase("postgresql")) {
sqlHelper = new PostgresqlSQLHelper();
}
else if
(databaseProductName.equalsIgnoreCase("openbase")) {
sqlHelper = new OpenBaseSQLHelper();
}
else if (databaseProductName.equalsIgnoreCase("derby")) {
sqlHelper = new DerbySQLHelper();
}
else if
(databaseProductName.equalsIgnoreCase("microsoft")) {
sqlHelper = new MicrosoftSQLHelper();
}
else {
try {
sqlHelper = (ERXSQLHelper)
Class.forName(ERXSQLHelper.class.getName() + "$" +
databaseProductName + "SQLHelper").newInstance();
}
catch (ClassNotFoundException e) {
sqlHelper = new ERXSQLHelper();
}
}
}
else {
sqlHelper = (ERXSQLHelper)
Class.forName(sqlHelperClassName).newInstance();
}
_sqlHelperMap.put(databaseProductName, sqlHelper);
}
catch (Exception e) {
throw new NSForwardException(e, "Failed to create sql
helper for the database with the product name '" +
databaseProductName + "'.");
}
}
return sqlHelper;
}
}
Am 21.09.2009 um 23:24 schrieb Andrew Lindesay:
Hi Anjo;
I guess this could be helpful in _some_ situations; I take for
example, the Jetty server. Jetty can have a number of "handlers"
added to it. Each handler does something like re-writes, feeds
disk-based content, runs servlets etc.. etc.. The Jetty authors
could not have envisaged all of the possible handlers that might
have been written for Jetty, but because of the configuration style
which follows the same line of thinking as Andrus is describing, it
is possible to configure additional handlers. So that's a good
example of where this seems quite helpful and Andrus' other
examples also feel like good examples, but I agree that it seems
like over-kill for many situations.
cheers.
Thanks for the write-up, but yeah, this can all be achieved w/o
it. I really don't see why I shouldn't configure my app with
if(Configration.isStaging())... and instead use DI. At least my
way I easily find all the occurrences and have full logic support
if(!Configuration.isStaging()). How is DI "cleaner" in any way when:
- I have any number of DI containers and their various syntax to
chose from
- I can't *find* the dependencies when I really want or need them.
Have you ever tried to debug such an app that wasn't written by
yourself? Take a look at the Red5 Media server for some fun...
___
Andrew Lindesay
www.lindesay.co.nz
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Re: WebObjects and dependency injection (DI)
U-huh. So how about a real world example and not these cooked up
things. Take a look at the ERXSQLHelper. Depending on various types of
input it creates a concrete subclass. Can DI change this to sth more
"clean"?
Cheers, Anjo
public static ERXSQLHelper newSQLHelper(String databaseProductName) {
synchronized (_sqlHelperMap) {
ERXSQLHelper sqlHelper = _sqlHelperMap.get(databaseProductName);
if (sqlHelper == null) {
try {
String sqlHelperClassName = ERXProperties.stringForKey
(databaseProductName + ".SQLHelper");
if (sqlHelperClassName == null) {
if (databaseProductName.equalsIgnoreCase("frontbase")) {
sqlHelper = new FrontBaseSQLHelper();
}
else if (databaseProductName.equalsIgnoreCase("mysql")) {
sqlHelper = new MySQLSQLHelper();
}
else if (databaseProductName.equalsIgnoreCase("oracle")) {
sqlHelper = new OracleSQLHelper();
}
else if (databaseProductName.equalsIgnoreCase
("postgresql")) {
sqlHelper = new PostgresqlSQLHelper();
}
else if (databaseProductName.equalsIgnoreCase
("openbase")) {
sqlHelper = new OpenBaseSQLHelper();
}
else if (databaseProductName.equalsIgnoreCase("derby")) {
sqlHelper = new DerbySQLHelper();
}
else if (databaseProductName.equalsIgnoreCase
("microsoft")) {
sqlHelper = new MicrosoftSQLHelper();
}
else {
try {
sqlHelper = (ERXSQLHelper) Class.forName
(ERXSQLHelper.class.getName() + "$" + databaseProductName +
"SQLHelper").newInstance();
}
catch (ClassNotFoundException e) {
sqlHelper = new ERXSQLHelper();
}
}
}
else {
sqlHelper = (ERXSQLHelper) Class.forName
(sqlHelperClassName).newInstance();
}
_sqlHelperMap.put(databaseProductName, sqlHelper);
}
catch (Exception e) {
throw new NSForwardException(e, "Failed to create sql
helper for the database with the product name '" + databaseProductName
+ "'.");
}
}
return sqlHelper;
}
}
Am 21.09.2009 um 23:24 schrieb Andrew Lindesay:
Hi Anjo;
I guess this could be helpful in _some_ situations; I take for
example, the Jetty server. Jetty can have a number of "handlers"
added to it. Each handler does something like re-writes, feeds disk-
based content, runs servlets etc.. etc.. The Jetty authors could
not have envisaged all of the possible handlers that might have been
written for Jetty, but because of the configuration style which
follows the same line of thinking as Andrus is describing, it is
possible to configure additional handlers. So that's a good example
of where this seems quite helpful and Andrus' other examples also
feel like good examples, but I agree that it seems like over-kill
for many situations.
cheers.
Thanks for the write-up, but yeah, this can all be achieved w/o it.
I really don't see why I shouldn't configure my app with if
(Configration.isStaging())... and instead use DI. At least my way I
easily find all the occurrences and have full logic support if(!
Configuration.isStaging()). How is DI "cleaner" in any way when:
- I have any number of DI containers and their various syntax to
chose from
- I can't *find* the dependencies when I really want or need them.
Have you ever tried to debug such an app that wasn't written by
yourself? Take a look at the Red5 Media server for some fun...
___
Andrew Lindesay
www.lindesay.co.nz
___
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Re: WebObjects and dependency injection (DI)
Hi Anjo; I guess this could be helpful in _some_ situations; I take for example, the Jetty server. Jetty can have a number of "handlers" added to it. Each handler does something like re-writes, feeds disk- based content, runs servlets etc.. etc.. The Jetty authors could not have envisaged all of the possible handlers that might have been written for Jetty, but because of the configuration style which follows the same line of thinking as Andrus is describing, it is possible to configure additional handlers. So that's a good example of where this seems quite helpful and Andrus' other examples also feel like good examples, but I agree that it seems like over-kill for many situations. cheers. Thanks for the write-up, but yeah, this can all be achieved w/o it. I really don't see why I shouldn't configure my app with if(Configration.isStaging())... and instead use DI. At least my way I easily find all the occurrences and have full logic support if(! Configuration.isStaging()). How is DI "cleaner" in any way when: - I have any number of DI containers and their various syntax to chose from - I can't *find* the dependencies when I really want or need them. Have you ever tried to debug such an app that wasn't written by yourself? Take a look at the Red5 Media server for some fun... ___ Andrew Lindesay www.lindesay.co.nz ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Very interesting case
I know, I have been piddling with it and probably violated many
commandments. Let me explain what I am doing and see if anyone has
any insight.
I have a datamodel with the following:
Users (identifier Integer, username string, password string)
Pages (identifier Integer, PageDescription string, active integer,
position Integer)
Questions (identifier integer, questiontext string, pageidentifier
integer, active integer)
Question Lookup Values (identifier, descriptivetext string, active
integer)
UserAnswers(identifier integer, useridentifier integer,
questionidentifier integer, answeridentifier integer)
Pretty simple. A user can access any page, any question on a page,
and answer a question only once. So I created an entity:
useranswers ( User, Question, Answer(would contain a question lookup) )
Pages can have one or more questions,
Questions can have zero or more Question Lookup Values.
More than one question can relate to a question lookup value.
So the relationship looks like this:
Pages <-->> Questions <<-->> Lookup Values
User <-->> UserAnswers <<--> Question
So what I have done is create a component that takes a User as a
property when it is created setUser(...).
I then created a WODisplayGroup for Pages with no detail.
I then created a WODisplayGroup for Questions with detail pointing to
pages.
I then created a WODisplayGroup for UserAnswers with detail pointing
to questions.
The issue I have with the UserAnswers displaygroup is that it also
requires a qualification to a User as well as a question. N
problemo, I use the
queryMatch().setValueForKey(theUserObject,"theUser").
Now here is where I run into issues, Question.theAnswers relationship
returns an NSArray because it is a to-many. How do I bind this to the
selection property of a WOPopupButton, I can't that I know of.
<>
Don
On Sep 21, 2009, at 4:31 PM, Chuck Hill wrote:
On Sep 21, 2009, at 1:17 PM, Don Lindsay wrote:
Hello;
I have a component that I am updating a table of answers based on
selections made by the user from a worepitition.
The code being executed is:
try {
String sEoQualifierText = "page=";
sEoQualifierText +=
Integer.toString((Integer)thePage().valueForKey("identifier"));
sEoQualifierText += " and question=";
sEoQualifierText +=
Integer.toString((Integer)theQuestion().valueForKey("identifier"));
sEoQualifierText += " and user=";
sEoQualifierText += Integer.toString((Integer)
((EOEnterpriseObject)theUser).valueForKey("identifier"));
EOQualifier oQual =
EOQualifier.qualifierWithQualifierFormat(sEoQualifierText,null);
What are you doing? And why? What is
thePage().valueForKey("identifier")? Home brew binding sync?
Generic Record based EOs with no Java classes?
Wonder's ERXQ will make your life so much easier to read and maintain.
EOFetchSpecification oFetch = new
EOFetchSpecification("UserAnswers",oQual,null);
NSArray aAnswer =
oEO().objectsWithFetchSpecification(oFetch);
oEO().lock();
Nooo.
Why lock like that? Why not just gouge your eyes out and hammer
pencils into your ears? It will be quicker and less painful and
just as effective.
Locking like that is useless and wrong and just won't work. Ever.
Use ERXEC or the MultiECLockManager. Your chances of doing it right
another other way approach null.
((UserAnswers
)aAnswer.objectAtIndex(0)).setTheAnswer((QuestionLookup)theAnswer());
//((EOEnterpriseObject)aAnswer.objectAtIndex(0)).willChange();
oEO().unlock();
//System.out.println("updates to be saved: " +
oEO().updatedObjects());
oEO().saveChanges();
} catch (Exception e) {
e.printStackTrace();
System.out.println(e.getMessage());
System.out.println("hiss, didn't work");
}
if (theAnswer!=null) {
System.out.println("append to response firing "+
(String)theAnswer.valueForKey("desc"));
} else {
System.out.println("append to response firing but the answer is
null");
}
ThePage is an item from a listing of available pages repetition.
TheQuestion is an item from listing of questions repitition.
TheUser is the user who is currently working with the page.
The entity has 4 attributes (user, page, question, answer).
When I turn on EO Debugging I see that an update is made, but when
I check the database the answer is always null. I do not get any
errors in the logs. If I had an error I could start working it out.
Anyone have any ideas?
My money is on "incorrect EC locking" followed by "violating EOF
commandments". This is the classic symptom of doing either (or
both!) of t
Re: WebObjects and dependency injection (DI)
Am 21.09.2009 um 22:46 schrieb Andrus Adamchik: To be sure all of that can be achieved without DI. DI just makes it declarative and cleaner, and actually encourages you to follow this specific development pattern. Thanks for the write-up, but yeah, this can all be achieved w/o it. I really don't see why I shouldn't configure my app with if (Configration.isStaging())... and instead use DI. At least my way I easily find all the occurrences and have full logic support if(! Configuration.isStaging()). How is DI "cleaner" in any way when: - I have any number of DI containers and their various syntax to chose from - I can't *find* the dependencies when I really want or need them. Have you ever tried to debug such an app that wasn't written by yourself? Take a look at the Red5 Media server for some fun... Cheers, Anjo ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: WebObjects and dependency injection (DI)
Personally I don't even care that much about unit testing web applications. In data-driven apps, even with DI, it is hard to create good mock data for most of your services, as it may depend on a pretty deep object graph. To me DI is all about clean design and decoupling of functionality from configuration. Implementing core application services as interfaces is one part of it (not really dependent on DI), but DI serves as a glue for those services. At the end it gives you flexibility to tweak things by swapping implementations of services without touching the components or writing endless if/else manual configuration code. One real-life example is a CMS system that would generate vhost based URLs when in production (http://vhost.example.org) and path-based URLs in development environment with no DNS capability (http://localhost/vhost ). Another one from the CMS realm is a cache service that is implemented differently depending on whether the same application is in live mode vs. preview mode, allowing for instantaneous page refreshing in preview mode and best performance on a live site. Then there's all the interceptors that you can build around interface method calls. I don't use it too often personally, but on a rare occasion when you need it, this is priceless. To be sure all of that can be achieved without DI. DI just makes it declarative and cleaner, and actually encourages you to follow this specific development pattern. Andrus On Sep 21, 2009, at 11:22 PM, Anjo Krank wrote: Just so I know: does DI make anything simpler aside from unit testing? Is it worth the cost of un-readbility and un-debugablity? I mean, for foreign code i totally rely on eclipse call graphs... these are a nightmare with interfaces, not to mention missing constructors. Cheers, Anjo Am 21.09.2009 um 21:17 schrieb Andrus Adamchik: Hi Henrique, Nice, thanks for sharing this info. Yeah, going through WOApplication and WOComponentDefinition, I realized I was too optimistic. Most interesting methods that would've enabled DI integration are all private. Quite a bit of code to rewrite to make it work. I was even thinking of limiting injection to just the Application class. Great that you are willing to open source your work in this area. Even if you load your code in its current state to a public SVN (ObjectStyle.org is always an option) or git somewhere, it will be a rather helpful example. Cheers, Andrus - Andrus Adamchik Apache Cayenne ORM: http://cayenne.apache.org/ Creator of Cayenne, VP Apache Software Foundation On Sep 21, 2009, at 6:18 PM, Henrique Prange wrote: Hi Andrus, Andrus Adamchik wrote: I know it is not the traditional "WO way" of doing things, but from my experience using a dependency injection container in your app (Spring, Guice, etc.) is one single thing that you can do to dramatically improve the design quality, and produce flexible and maintainable code. We have been using Guice with WO for some time in our projects. Our code become easier to test without requiring too much boilerplate code using a DI container. WO does a bit of that on its own (such as session and application injection in components), but doesn't bundle a container that a developer could use for the custom "services" (unlike say Tapestry, that does have a DI container at its core). Say I have a WO application and I'd like to use Spring or Guice to inject custom services in the WOComponents, instead of looking them up in WOApplication (or worse - defining them as static singletons somewhere). This sounds easy on the surface. I don't remember all the component creation internals now (it's been a while since I poked around the framework code), but I am pretty sure I can create them with my own factory that is DI container aware. On the other hand (also because I've been out of the loop on WO for quite some time), I am sure I am missing some pieces of the puzzle that would make such setup less practical or outright painful. Instead of changing component creation internals, we've created an extension of ERXComponent that obtain the injector and inject the required members. It is not a perfect solution (you can't use constructor injection this way), but it is easy to implement. This and the fact that DI capabilities don't seem to bother the rest of the community, I figured I'd ask the list on your opinions, while I am trying to wire this thing up in the background. So anybody played with DI-on-WO in some form with any success? We have an audit framework completely based on Guice. We have created extensions of other important classes to make it possible, like ERXGenericRecord and ERXEC and we have created a @WOSessionScoped scope to create/obtain objects per WOSession. We are planning to create an open source framework with this stuff. We are just po
Re: Very interesting case
On Sep 21, 2009, at 1:17 PM, Don Lindsay wrote:
Hello;
I have a component that I am updating a table of answers based on
selections made by the user from a worepitition.
The code being executed is:
try {
String sEoQualifierText = "page=";
sEoQualifierText +=
Integer.toString((Integer)thePage().valueForKey("identifier"));
sEoQualifierText += " and question=";
sEoQualifierText +=
Integer.toString((Integer)theQuestion().valueForKey("identifier"));
sEoQualifierText += " and user=";
sEoQualifierText += Integer.toString((Integer)
((EOEnterpriseObject)theUser).valueForKey("identifier"));
EOQualifier oQual =
EOQualifier.qualifierWithQualifierFormat(sEoQualifierText,null);
What are you doing? And why? What is
thePage().valueForKey("identifier")? Home brew binding sync? Generic
Record based EOs with no Java classes?
Wonder's ERXQ will make your life so much easier to read and maintain.
EOFetchSpecification oFetch = new
EOFetchSpecification("UserAnswers",oQual,null);
NSArray aAnswer =
oEO().objectsWithFetchSpecification(oFetch);
oEO().lock();
Nooo.
Why lock like that? Why not just gouge your eyes out and hammer
pencils into your ears? It will be quicker and less painful and just
as effective.
Locking like that is useless and wrong and just won't work. Ever.
Use ERXEC or the MultiECLockManager. Your chances of doing it right
another other way approach null.
((UserAnswers
)aAnswer.objectAtIndex(0)).setTheAnswer((QuestionLookup)theAnswer());
//((EOEnterpriseObject)aAnswer.objectAtIndex(0)).willChange();
oEO().unlock();
//System.out.println("updates to be saved: " +
oEO().updatedObjects());
oEO().saveChanges();
} catch (Exception e) {
e.printStackTrace();
System.out.println(e.getMessage());
System.out.println("hiss, didn't work");
}
if (theAnswer!=null) {
System.out.println("append to response firing "+
(String)theAnswer.valueForKey("desc"));
} else {
System.out.println("append to response firing but the answer is
null");
}
ThePage is an item from a listing of available pages repetition.
TheQuestion is an item from listing of questions repitition.
TheUser is the user who is currently working with the page.
The entity has 4 attributes (user, page, question, answer).
When I turn on EO Debugging I see that an update is made, but when I
check the database the answer is always null. I do not get any
errors in the logs. If I had an error I could start working it out.
Anyone have any ideas?
My money is on "incorrect EC locking" followed by "violating EOF
commandments". This is the classic symptom of doing either (or both!)
of those.
Chuck
--
Chuck Hill Senior Consultant / VP Development
Practical WebObjects - for developers who want to increase their
overall knowledge of WebObjects or who are trying to solve specific
problems.
http://www.global-village.net/products/practical_webobjects
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Re: WebObjects and dependency injection (DI)
Just so I know: does DI make anything simpler aside from unit testing? Is it worth the cost of un-readbility and un-debugablity? I mean, for foreign code i totally rely on eclipse call graphs... these are a nightmare with interfaces, not to mention missing constructors. Cheers, Anjo Am 21.09.2009 um 21:17 schrieb Andrus Adamchik: Hi Henrique, Nice, thanks for sharing this info. Yeah, going through WOApplication and WOComponentDefinition, I realized I was too optimistic. Most interesting methods that would've enabled DI integration are all private. Quite a bit of code to rewrite to make it work. I was even thinking of limiting injection to just the Application class. Great that you are willing to open source your work in this area. Even if you load your code in its current state to a public SVN (ObjectStyle.org is always an option) or git somewhere, it will be a rather helpful example. Cheers, Andrus - Andrus Adamchik Apache Cayenne ORM: http://cayenne.apache.org/ Creator of Cayenne, VP Apache Software Foundation On Sep 21, 2009, at 6:18 PM, Henrique Prange wrote: Hi Andrus, Andrus Adamchik wrote: I know it is not the traditional "WO way" of doing things, but from my experience using a dependency injection container in your app (Spring, Guice, etc.) is one single thing that you can do to dramatically improve the design quality, and produce flexible and maintainable code. We have been using Guice with WO for some time in our projects. Our code become easier to test without requiring too much boilerplate code using a DI container. WO does a bit of that on its own (such as session and application injection in components), but doesn't bundle a container that a developer could use for the custom "services" (unlike say Tapestry, that does have a DI container at its core). Say I have a WO application and I'd like to use Spring or Guice to inject custom services in the WOComponents, instead of looking them up in WOApplication (or worse - defining them as static singletons somewhere). This sounds easy on the surface. I don't remember all the component creation internals now (it's been a while since I poked around the framework code), but I am pretty sure I can create them with my own factory that is DI container aware. On the other hand (also because I've been out of the loop on WO for quite some time), I am sure I am missing some pieces of the puzzle that would make such setup less practical or outright painful. Instead of changing component creation internals, we've created an extension of ERXComponent that obtain the injector and inject the required members. It is not a perfect solution (you can't use constructor injection this way), but it is easy to implement. This and the fact that DI capabilities don't seem to bother the rest of the community, I figured I'd ask the list on your opinions, while I am trying to wire this thing up in the background. So anybody played with DI-on-WO in some form with any success? We have an audit framework completely based on Guice. We have created extensions of other important classes to make it possible, like ERXGenericRecord and ERXEC and we have created a @WOSessionScoped scope to create/obtain objects per WOSession. We are planning to create an open source framework with this stuff. We are just polishing what we've done to use some new features of Guice 2.0. Cheers, Henrique ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/anjo%40krank.net This email sent to a...@krank.net ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
DirectAction with cookies and session
Hello, If I missed this I apologize but I can't seem to find anything on this. I'm trying to test out SWFUpload within one of my WO apps. It is currently set up to store sessionID in cookies. SWFUpload needs a post-upload URL for processing, I need the session information to be available to that URL. I can't seem to get DirectAction to 'isSessionIDInRequest' always comes up false and 'sessionID' always is null. I've tried constructing the URL through WOActionURL and 'directActionURLForActionNamed'. Both make a [what looks like] a valid directaction URL. But when sent it never finds the session from the cookie. Is there something else I have to do when trying to use a DirectAction in a session? thanks. -fw Disclaimer The information in this email and any attachments may contain proprietary and confidential information that is intended for the addressee(s) only. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, retention or use of the contents of this information is prohibited. When addressed to our clients or vendors, any information contained in this e-mail or any attachments is subject to the terms and conditions in any governing contract. If you have received this e-mail in error, please immediately contact the sender and delete the e-mail. ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Very interesting case
Hello;
I have a component that I am updating a table of answers based on
selections made by the user from a worepitition.
The code being executed is:
try {
String sEoQualifierText = "page=";
sEoQualifierText +=
Integer.toString((Integer)thePage().valueForKey("identifier"));
sEoQualifierText += " and question=";
sEoQualifierText +=
Integer.toString((Integer)theQuestion().valueForKey("identifier"));
sEoQualifierText += " and user=";
sEoQualifierText += Integer.toString((Integer)
((EOEnterpriseObject)theUser).valueForKey("identifier"));
EOQualifier oQual =
EOQualifier.qualifierWithQualifierFormat(sEoQualifierText,null);
EOFetchSpecification oFetch = new
EOFetchSpecification("UserAnswers",oQual,null);
NSArray aAnswer =
oEO().objectsWithFetchSpecification(oFetch);
oEO().lock();
((UserAnswers
)aAnswer.objectAtIndex(0)).setTheAnswer((QuestionLookup)theAnswer());
//((EOEnterpriseObject)aAnswer.objectAtIndex(0)).willChange();
oEO().unlock();
//System.out.println("updates to be saved: " +
oEO().updatedObjects());
oEO().saveChanges();
} catch (Exception e) {
e.printStackTrace();
System.out.println(e.getMessage());
System.out.println("hiss, didn't work");
}
if (theAnswer!=null) {
System.out.println("append to response firing "+
(String)theAnswer.valueForKey("desc"));
} else {
System.out.println("append to response firing but the answer is
null");
}
ThePage is an item from a listing of available pages repetition.
TheQuestion is an item from listing of questions repitition.
TheUser is the user who is currently working with the page.
The entity has 4 attributes (user, page, question, answer).
When I turn on EO Debugging I see that an update is made, but when I
check the database the answer is always null. I do not get any errors
in the logs. If I had an error I could start working it out.
Anyone have any ideas?
Thanks
Don
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Re: AjaxAutoComplete - is it possible to have the equivalent of a noDisplayString?
Kieran:
Thanks - Ajax*TextHinter* works beautifully!
This is an example of* Y*et *A*nother *W*onder *N*ugget!
David:
> Unfortunately the text triggers an immediate search on the default string.
It doesn't in my case. It is working as expected for me per the
AjaxTextHinter javadoc example.
Thanks again.
--JSt
On Mon, Sep 21, 2009 at 1:21 PM, David Holt wrote:
>
> On 21-Sep-09, at 9:09 AM, Kieran Kelleher wrote:
>
> I believe AjaxTextHinter in Wonder/Ajax is what you want.
>>
>
> This is really cool. I just tried it in an auto search field (like the
> example in AjaxExample2). Unfortunately the text triggers an immediate
> search on the default string. Do you know if there is a way to disable that
> behaviour so that the default text is just treated like a label and not
> treated as content of the text field?
>
>
>> On Sep 21, 2009, at 11:33 AM, J Stephanos wrote:
>>
>> Wonder's AjaxAutoComplete works great - but is it possible to have the
>>> equivalent of a noDisplayString?
>>>
>>> Movie Name: [ enter a movie name here ]
>>>
>>> We'd like to provide some hint ("enter movie name here") to the user, to
>>> enter a movie name in the field. It should disappear when you start typing
>>> in the text. Is this feature already there? Couldn't find it in the
>>> javadoc.
>>>
>>> TIA.
>>>
>>> --JSt
>>> ___
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Re: Proper Wonder/App Initialization for testing
initApp is like primeApplication on Wonder steroids ... I actually need to figure out exactly how to run them from Eclipse. Right now I run most things using an app wrapper that uses the JUnit console TestRunner. On Sep 21, 2009, at 3:13 PM, Chuck Hill wrote: On Sep 21, 2009, at 8:55 AM, Greg Brown wrote: Hi, I converted an app to use Wonder, and I think my tests need do do something new so that all the Wonder stuff initializes properly. This page: http://wiki.objectstyle.org/confluence/display/WONDER/Integrate+Wonder+Into+an+Existing+Application has nothing about tests ;>o Unit type tests seem to run fine without initializing the wonder frameworks, but database type (dbuinit) tests probably need the wonder stuff to be properly initialized. ERXExtensions has a bunch of initApp, initEOF, initialize methods, which one is generally best for testNG / dbuinit initializations? Or do I need something like an initApp followed by a initEOF? How do people handle this? a @BeforeSuite annotation to a method which calls some er.extensions.ERXExtensions.initFoo()? In an non-Wonder app with similar startup logic, I need to call WOApplication.primeApplication(). See if that helps. Chuck ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/mschrag%40mdimension.com This email sent to msch...@mdimension.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Default form value encoding was changed after parsing multi-part form. Form values will be lost.
Fantastic. Works perfectly. I think I should create a new empty PW application and check I have all the newer properties set appropriately. Many thanks! Best wishes, Mark 2009/9/21 Chuck Hill : > Have you changed WO versions? Do you have this in your Properties file? > > er.extensions.ERXApplication.DefaultEncoding=UTF-8 > > Chuck > > > On Sep 21, 2009, at 12:34 PM, Mark Wardle wrote: > >> Hi all, >> >> I have a component that edits a specific EO allowing upload of a user >> photo. Using WO 5.4.3 on Snow Leopard, >> java.runtime.version=1.6.0_15-b03-219, Project Wonder (revision 9861). >> >> It used to work. Something changed - my code, leopard->snow leopard, >> project wonder? I don't know what! >> >> Suddenly the component was editing objects that failed validation and >> it was not clear why. I realised that a form submission seemed to be >> going wrong (no form values were passed). Eventually I removed the >> WOUpload component out of desperation and then started receiving this >> exception: >> >> Sep 21 19:31:14 rsdb[52783] WARN NSLog - >> : >> Exception occurred while handling request: >> java.lang.IllegalStateException: Default form value encoding was >> changed after parsing multi-part form. Form values will be lost. >> [2009-9-21 19:31:14 BST] >> java.lang.IllegalStateException: Default form value encoding was >> changed after parsing multi-part form. Form values will be lost. >> >> Aha! A clue. I can solve the problem by removing the WOUpload >> component AND removing the enctype from the WOForm: >> >> > action = "$saveChangesAction"> >> ... >> >> >> There are many posts on the subject of UTF-8 and UTF8, including on >> the wiki and even in the apple documentation. However, there doesn't >> seem to be much consensus and it looks like most of the answers >> revolve around setting encoding at the end of generating a response >> (in Application class) and setting the formencoding (in the >> Application and Session classes). These don't work; they don't cause >> problems but don't solve the problem. I suspect I'm getting UTF-8 >> encoding anyway from what I get log from different points in the >> RR-loop. >> >> I don't manually set encoding and my application is fully Project >> Wonder'd; ERXSession, ERXApplication etc., and by the looks of the >> source code, the encoding should be correctly intuited. >> >> Obviously, without the "multipart/form-data" setting, WOUpload >> (ERXWOUpload) complains. >> >> Any ideas? I'm sure this was working. >> >> Many thanks, >> >> Mark >> >> -- Dr. Mark Wardle >> Specialist registrar, Neurology >> Cardiff, UK >> ___ >> Do not post admin requests to the list. They will be ignored. >> Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) >> Help/Unsubscribe/Update your Subscription: >> >> http://lists.apple.com/mailman/options/webobjects-dev/chill%40global-village.net >> >> This email sent to ch...@global-village.net > > -- Chuck Hill Senior Consultant / VP Development > > Practical WebObjects - for developers who want to increase their overall > knowledge of WebObjects or who are trying to solve specific problems. > http://www.global-village.net/products/practical_webobjects > > > > > > > > -- Dr. Mark Wardle Specialist registrar, Neurology Cardiff, UK ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Default form value encoding was changed after parsing multi-part form. Form values will be lost.
Have you changed WO versions? Do you have this in your Properties file? er.extensions.ERXApplication.DefaultEncoding=UTF-8 Chuck On Sep 21, 2009, at 12:34 PM, Mark Wardle wrote: Hi all, I have a component that edits a specific EO allowing upload of a user photo. Using WO 5.4.3 on Snow Leopard, java.runtime.version=1.6.0_15-b03-219, Project Wonder (revision 9861). It used to work. Something changed - my code, leopard->snow leopard, project wonder? I don't know what! Suddenly the component was editing objects that failed validation and it was not clear why. I realised that a form submission seemed to be going wrong (no form values were passed). Eventually I removed the WOUpload component out of desperation and then started receiving this exception: Sep 21 19:31:14 rsdb[52783] WARN NSLog - : Exception occurred while handling request: java.lang.IllegalStateException: Default form value encoding was changed after parsing multi-part form. Form values will be lost. [2009-9-21 19:31:14 BST] java.lang.IllegalStateException: Default form value encoding was changed after parsing multi-part form. Form values will be lost. Aha! A clue. I can solve the problem by removing the WOUpload component AND removing the enctype from the WOForm: ... There are many posts on the subject of UTF-8 and UTF8, including on the wiki and even in the apple documentation. However, there doesn't seem to be much consensus and it looks like most of the answers revolve around setting encoding at the end of generating a response (in Application class) and setting the formencoding (in the Application and Session classes). These don't work; they don't cause problems but don't solve the problem. I suspect I'm getting UTF-8 encoding anyway from what I get log from different points in the RR-loop. I don't manually set encoding and my application is fully Project Wonder'd; ERXSession, ERXApplication etc., and by the looks of the source code, the encoding should be correctly intuited. Obviously, without the "multipart/form-data" setting, WOUpload (ERXWOUpload) complains. Any ideas? I'm sure this was working. Many thanks, Mark -- Dr. Mark Wardle Specialist registrar, Neurology Cardiff, UK ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/chill%40global-village.net This email sent to ch...@global-village.net -- Chuck Hill Senior Consultant / VP Development Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who are trying to solve specific problems. http://www.global-village.net/products/practical_webobjects ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Default form value encoding was changed after parsing multi-part form. Form values will be lost.
Hi all, I have a component that edits a specific EO allowing upload of a user photo. Using WO 5.4.3 on Snow Leopard, java.runtime.version=1.6.0_15-b03-219, Project Wonder (revision 9861). It used to work. Something changed - my code, leopard->snow leopard, project wonder? I don't know what! Suddenly the component was editing objects that failed validation and it was not clear why. I realised that a form submission seemed to be going wrong (no form values were passed). Eventually I removed the WOUpload component out of desperation and then started receiving this exception: Sep 21 19:31:14 rsdb[52783] WARN NSLog - : Exception occurred while handling request: java.lang.IllegalStateException: Default form value encoding was changed after parsing multi-part form. Form values will be lost. [2009-9-21 19:31:14 BST] java.lang.IllegalStateException: Default form value encoding was changed after parsing multi-part form. Form values will be lost. Aha! A clue. I can solve the problem by removing the WOUpload component AND removing the enctype from the WOForm: ... There are many posts on the subject of UTF-8 and UTF8, including on the wiki and even in the apple documentation. However, there doesn't seem to be much consensus and it looks like most of the answers revolve around setting encoding at the end of generating a response (in Application class) and setting the formencoding (in the Application and Session classes). These don't work; they don't cause problems but don't solve the problem. I suspect I'm getting UTF-8 encoding anyway from what I get log from different points in the RR-loop. I don't manually set encoding and my application is fully Project Wonder'd; ERXSession, ERXApplication etc., and by the looks of the source code, the encoding should be correctly intuited. Obviously, without the "multipart/form-data" setting, WOUpload (ERXWOUpload) complains. Any ideas? I'm sure this was working. Many thanks, Mark -- Dr. Mark Wardle Specialist registrar, Neurology Cardiff, UK ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Multi-Tenant Data Architecture
Hi Henrique, On Sep 19, 2009, at 8:09 AM, Henrique Prange wrote: Hi all, Is there a way to configure EOF to access separate databases for each tenant in *one* application? I'm working in an application that has a strong non-functional requirement on multi-tenant architecture with isolated database access. I've seen some discussion related with this subject, but it was not clear to me how could I implement this kind of stuff. Any directions are really appreciated. The easiest, and perhaps best, way to do this is to have different instances for each tenant. The configuration (in JavaMonitor or elsewhere) can then specify the database. Pros: - easy - problems / load on one tenant do not impact others - guaranteed that one tenant will not accidently see information from another Cons: - more instances to administer - some increase in RAM usage due to duplicated loading of code and JVM If you don't want to do that and are committed to doing this in one instance, the next best way is to tag the root object with the tenant. But you said "separate databases", so that is ruled out. The only way that I can think of to accomplish what you want is to create an EOModelGroup for each tenant. A separate copy of each model will need to be loaded into each group and the database connection information set for that tenant. Each EOModelGroup will serve as the basis for a new EOF stack (rooted at EOObjectStoreCoordinator). When a session is created, you will need to ensure that all editing contexts created for that session use the correct EOObjectStoreCoordinator. You will also want to ensure that you don't use default in your code (defaultEditingContext(), defaultModelGroup() etc.) as these are unlikey to return objects from the correct EOF stack. Caveat: this is theoretical, I don't have any experience doing this. I don't think that many people have done this, so you run the risk of finding bugs in seldom executed EOF code. Chuck -- Chuck Hill Senior Consultant / VP Development Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who are trying to solve specific problems. http://www.global-village.net/products/practical_webobjects ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: WebObjects and dependency injection (DI)
Hi Henrique, Nice, thanks for sharing this info. Yeah, going through WOApplication and WOComponentDefinition, I realized I was too optimistic. Most interesting methods that would've enabled DI integration are all private. Quite a bit of code to rewrite to make it work. I was even thinking of limiting injection to just the Application class. Great that you are willing to open source your work in this area. Even if you load your code in its current state to a public SVN (ObjectStyle.org is always an option) or git somewhere, it will be a rather helpful example. Cheers, Andrus - Andrus Adamchik Apache Cayenne ORM: http://cayenne.apache.org/ Creator of Cayenne, VP Apache Software Foundation On Sep 21, 2009, at 6:18 PM, Henrique Prange wrote: Hi Andrus, Andrus Adamchik wrote: I know it is not the traditional "WO way" of doing things, but from my experience using a dependency injection container in your app (Spring, Guice, etc.) is one single thing that you can do to dramatically improve the design quality, and produce flexible and maintainable code. We have been using Guice with WO for some time in our projects. Our code become easier to test without requiring too much boilerplate code using a DI container. WO does a bit of that on its own (such as session and application injection in components), but doesn't bundle a container that a developer could use for the custom "services" (unlike say Tapestry, that does have a DI container at its core). Say I have a WO application and I'd like to use Spring or Guice to inject custom services in the WOComponents, instead of looking them up in WOApplication (or worse - defining them as static singletons somewhere). This sounds easy on the surface. I don't remember all the component creation internals now (it's been a while since I poked around the framework code), but I am pretty sure I can create them with my own factory that is DI container aware. On the other hand (also because I've been out of the loop on WO for quite some time), I am sure I am missing some pieces of the puzzle that would make such setup less practical or outright painful. Instead of changing component creation internals, we've created an extension of ERXComponent that obtain the injector and inject the required members. It is not a perfect solution (you can't use constructor injection this way), but it is easy to implement. This and the fact that DI capabilities don't seem to bother the rest of the community, I figured I'd ask the list on your opinions, while I am trying to wire this thing up in the background. So anybody played with DI-on-WO in some form with any success? We have an audit framework completely based on Guice. We have created extensions of other important classes to make it possible, like ERXGenericRecord and ERXEC and we have created a @WOSessionScoped scope to create/obtain objects per WOSession. We are planning to create an open source framework with this stuff. We are just polishing what we've done to use some new features of Guice 2.0. Cheers, Henrique ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Proper Wonder/App Initialization for testing
On Sep 21, 2009, at 8:55 AM, Greg Brown wrote: Hi, I converted an app to use Wonder, and I think my tests need do do something new so that all the Wonder stuff initializes properly. This page: http://wiki.objectstyle.org/confluence/display/WONDER/Integrate+Wonder+Into+an+Existing+Application has nothing about tests ;>o Unit type tests seem to run fine without initializing the wonder frameworks, but database type (dbuinit) tests probably need the wonder stuff to be properly initialized. ERXExtensions has a bunch of initApp, initEOF, initialize methods, which one is generally best for testNG / dbuinit initializations? Or do I need something like an initApp followed by a initEOF? How do people handle this? a @BeforeSuite annotation to a method which calls some er.extensions.ERXExtensions.initFoo()? In an non-Wonder app with similar startup logic, I need to call WOApplication.primeApplication(). See if that helps. Chuck ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Optimistic Locking?
Be careful if you use multiple OSCs and OSC Synchrnoization (Wonder
ERJGroupsSynchronizer for example). In that event you must lock the
stack during your (short) transaction in which you check for
optimistic lock exception as part of business logic.
For conceptual and optimistic locking discussion, see this thread by
Miguel Arroz (Dr. Survs ;-) )
http://terminalapp.net/dr-optimistic-locking/
BTW, you can create an OptimisticLockAction class to simplify the
code. For inspiration see ERXEOAccessUtilities.ChannelAction.
HTH, Kieran
On Sep 21, 2009, at 4:19 AM, Andrew Lindesay wrote:
Hi Chan;
In general, optimistic locking will put an extra helping of WHERE
clause at the end of your UPDATE statements. The extra WHERE clause
is to check that nothing has changed in the database row since the
enterprise-object was fetched from the database -- ie; check to make
sure nobody else has fiddled the row. So if the row from table FOO
was fetched with { A=2, B=20 } then a possible UPDATE statement
(with optimistic locking "A" and "B") would be;
UPDATE FOO SET A=123 WHERE A=2 AND B=20
To see this, turn on SQL logging in your WebObjects application.
cheers.
How do I tell if Optimistic Locking is working?
I've made a EOF Model with a versions field. Everything but the id
and the versions field has the lock symbol unchecked in WoLIPS. In
my EOEditingContext delegate's editingContextWillSaveChanges method
I incremented the versions field by 1. I opened up a web page that
edits the EOF model, then used another app to change the versions
number in the database. I made some changes to the EOF model via
the web page and did a save. I don't get an error.
Is there something I need to turn on? A flag of some sort? Or am I
misunderstanding how Optimistic Locking works?
___
Andrew Lindesay
www.lindesay.co.nz
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Re: AjaxAutoComplete - is it possible to have the equivalent of a noDisplayString?
On 21-Sep-09, at 9:09 AM, Kieran Kelleher wrote:
I believe AjaxTextHinter in Wonder/Ajax is what you want.
This is really cool. I just tried it in an auto search field (like
the example in AjaxExample2). Unfortunately the text triggers an
immediate search on the default string. Do you know if there is a way
to disable that behaviour so that the default text is just treated
like a label and not treated as content of the text field?
On Sep 21, 2009, at 11:33 AM, J Stephanos wrote:
Wonder's AjaxAutoComplete works great - but is it possible to have
the equivalent of a noDisplayString?
Movie Name: [ enter a movie name here ]
We'd like to provide some hint ("enter movie name here") to the
user, to enter a movie name in the field. It should disappear when
you start typing in the text. Is this feature already there?
Couldn't find it in the javadoc.
TIA.
--JSt
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Re: Proper Wonder/App Initialization for testing
On Sep 21, 2009, at 8:55 AM, Greg Brown wrote: Hi, I converted an app to use Wonder, and I think my tests need do do something new so that all the Wonder stuff initializes properly. This page: http://wiki.objectstyle.org/confluence/display/WONDER/Integrate+Wonder+Into+an+Existing+Application has nothing about tests ;>o You are right and something can certainly be added. Have you seen http://wiki.objectstyle.org/confluence/display/WONDER/Testing and the pages it points to? If you have suggestions for content to add to those pages, I would be glad to discuss it. Or you can add whatever you think needs to be added. Unit type tests seem to run fine without initializing the wonder frameworks, but database type (dbuinit) tests probably need the wonder stuff to be properly initialized. I assume you mean dbunit, yes? How do you invoke the tests you have now? I looked at dbunit quite a while ago. Things are probably at the point where I should look at it again. For example, I was planning on making use of the Memory EOAdaptor in a bunch of tests. I have just started to put junit tests that do EOF-ish stuff into the tests in the ERExtensions framework in Project Wonder, which can be checked out with svn. I have things set up to parameterize the tests so that we can run all the tests with one model, and then another and so on. There are, right now, some issues with running tests that use more than one EOAdaptor. So, I have checked in test that can parameterize on more than one model, but they do not. ERXExtensions has a bunch of initApp, initEOF, initialize methods, which one is generally best for testNG / dbuinit initializations? Or do I need something like an initApp followed by a initEOF? I am not sure you are looking at the right things, or I may not understand your question. One can initialize EOF by getting the default EOModelGroup (from the static defaultGroup() method), adding a model to it and fetching objects from that model. Or one can get an instance of an EOAdaptor (EOAdaptor.adaptorWithName()), set the connection dictionary properly, and call createAdaptorContext() on the adaptor to get a context, then createAdaptorChannel() on the context to get a channel and then opening the channel. Basically, EOF is self-(lazily)-initializing. Or rather, it is as lazy as it can be. How do people handle this? a @BeforeSuite annotation to a method which calls some er.extensions.ERXExtensions.initFoo()? Again, it depends on how you are invoking the tests you have now. We have different people who run different kinds of tests and invoke them in very different ways. I am trying to find methods of testing that span methods of test management and invocation. So, if you can explain what you want to do and you use tests and want to use tests, this will help broaden the use cases. cheers - ray ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Rewrite Rule
Are you running in WebServer connect mode? cug -- http://www.event-s.net On 20. Sep. 2009, at 02:02 , ute Hoffmann wrote: Hi, should this work for applications which have a session as well, or will it work only for sessionless apps? * * er.extensions.ERXApplication.replaceApplicationPath.pattern=/cgi- bin/WebObjects/YourApp.woa * er.extensions.ERXApplication.replaceApplicationPath.replace=/ yourapp * * * and in Apache 2.2: * * RewriteRule ^/yourapp(.*)$ /cgi-bin/WebObjects/YourApp.woa$1 [PT,L] * * * or Apache 1.3: * * RewriteRule ^/yourapp(.*)$ /cgi-bin/WebObjects/YourApp.woa$1 [P,L] * I put it into the properties file of an Application, but nothing changed in the way the URL's were displayed. I use WOHyperlinks which call directActions with parameters and have a session. I have the Application extend a Application class in a framework which then in turn extends ERXApplication. Could that be part of my problem? But the Application starts up ok, and the added properties are in the logfile, so I THINK they should be seen... Probably this is very basic, sorry. Thanks for your help. Regards, Ute ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/guido.neitzer%40gmail.com This email sent to guido.neit...@gmail.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: AjaxAutoComplete - is it possible to have the equivalent of a noDisplayString?
I believe AjaxTextHinter in Wonder/Ajax is what you want.
On Sep 21, 2009, at 11:33 AM, J Stephanos wrote:
Wonder's AjaxAutoComplete works great - but is it possible to have
the equivalent of a noDisplayString?
Movie Name: [ enter a movie name here ]
We'd like to provide some hint ("enter movie name here") to the
user, to enter a movie name in the field. It should disappear when
you start typing in the text. Is this feature already there?
Couldn't find it in the javadoc.
TIA.
--JSt
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Proper Wonder/App Initialization for testing
Hi, I converted an app to use Wonder, and I think my tests need do do something new so that all the Wonder stuff initializes properly. This page: http://wiki.objectstyle.org/confluence/display/WONDER/Integrate+Wonder +Into+an+Existing+Application has nothing about tests ;>o Unit type tests seem to run fine without initializing the wonder frameworks, but database type (dbuinit) tests probably need the wonder stuff to be properly initialized. ERXExtensions has a bunch of initApp, initEOF, initialize methods, which one is generally best for testNG / dbuinit initializations? Or do I need something like an initApp followed by a initEOF? How do people handle this? a @BeforeSuite annotation to a method which calls some er.extensions.ERXExtensions.initFoo()? Thanks, gb ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: HTTPS Connection
Don't waste your time with WOHttpConnection. Use Apache HttpClient. http://hc.apache.org/httpclient-3.x/ On Sep 21, 2009, at 10:44 AM, WebObjects - Anazys wrote: Hi all, I'm trying to handle transaction with a bank module.. not really easy.. Is it possible to send https request under WOHTTPConnection and ERXRequest ? I try many ways but nothing really work as I want. My code : WOHTTPConnection httpConn = new WOHTTPConnection( , 443 ); ERXRequest request = new ERXRequest( "POST", param1=value1..>, "HTTP/1.1", null, null, null ); Any help ? Thanks Cedric ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/kieran_lists%40mac.com This email sent to kieran_li...@mac.com ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
AjaxAutoComplete - is it possible to have the equivalent of a noDisplayString?
Wonder's AjaxAutoComplete works great - but is it possible to have the
equivalent of a noDisplayString?
Movie Name: [ enter a movie name here ]
We'd like to provide some hint ("enter movie name here") to the user, to
enter a movie name in the field. It should disappear when you start typing
in the text. Is this feature already there? Couldn't find it in the
javadoc.
TIA.
--JSt
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Re: WebObjects and dependency injection (DI)
Hi Andrus, Andrus Adamchik wrote: I know it is not the traditional "WO way" of doing things, but from my experience using a dependency injection container in your app (Spring, Guice, etc.) is one single thing that you can do to dramatically improve the design quality, and produce flexible and maintainable code. We have been using Guice with WO for some time in our projects. Our code become easier to test without requiring too much boilerplate code using a DI container. WO does a bit of that on its own (such as session and application injection in components), but doesn't bundle a container that a developer could use for the custom "services" (unlike say Tapestry, that does have a DI container at its core). Say I have a WO application and I'd like to use Spring or Guice to inject custom services in the WOComponents, instead of looking them up in WOApplication (or worse - defining them as static singletons somewhere). This sounds easy on the surface. I don't remember all the component creation internals now (it's been a while since I poked around the framework code), but I am pretty sure I can create them with my own factory that is DI container aware. On the other hand (also because I've been out of the loop on WO for quite some time), I am sure I am missing some pieces of the puzzle that would make such setup less practical or outright painful. Instead of changing component creation internals, we've created an extension of ERXComponent that obtain the injector and inject the required members. It is not a perfect solution (you can't use constructor injection this way), but it is easy to implement. This and the fact that DI capabilities don't seem to bother the rest of the community, I figured I'd ask the list on your opinions, while I am trying to wire this thing up in the background. So anybody played with DI-on-WO in some form with any success? We have an audit framework completely based on Guice. We have created extensions of other important classes to make it possible, like ERXGenericRecord and ERXEC and we have created a @WOSessionScoped scope to create/obtain objects per WOSession. We are planning to create an open source framework with this stuff. We are just polishing what we've done to use some new features of Guice 2.0. Cheers, Henrique ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
HTTPS Connection
Hi all, I'm trying to handle transaction with a bank module.. not really easy.. Is it possible to send https request under WOHTTPConnection and ERXRequest ? I try many ways but nothing really work as I want. My code : WOHTTPConnection httpConn = new WOHTTPConnection( ,443 ); ERXRequest request = new ERXRequest( "POST", param1=value1..>, "HTTP/1.1", null, null, null ); Any help ? Thanks Cedric ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
WebObjects and dependency injection (DI)
I know it is not the traditional "WO way" of doing things, but from my experience using a dependency injection container in your app (Spring, Guice, etc.) is one single thing that you can do to dramatically improve the design quality, and produce flexible and maintainable code. WO does a bit of that on its own (such as session and application injection in components), but doesn't bundle a container that a developer could use for the custom "services" (unlike say Tapestry, that does have a DI container at its core). Say I have a WO application and I'd like to use Spring or Guice to inject custom services in the WOComponents, instead of looking them up in WOApplication (or worse - defining them as static singletons somewhere). This sounds easy on the surface. I don't remember all the component creation internals now (it's been a while since I poked around the framework code), but I am pretty sure I can create them with my own factory that is DI container aware. On the other hand (also because I've been out of the loop on WO for quite some time), I am sure I am missing some pieces of the puzzle that would make such setup less practical or outright painful. This and the fact that DI capabilities don't seem to bother the rest of the community, I figured I'd ask the list on your opinions, while I am trying to wire this thing up in the background. So anybody played with DI-on-WO in some form with any success? Thanks, Andrus - Andrus (aka Andrei) Adamchik Apache Cayenne ORM: http://cayenne.apache.org/ Creator, VP Apache Software Foundation ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: printing margins with LEIPPPrintService from webobjects application
Hi Johan; Have you checked the PPD file on your CUPS server for the margins configured there? -- this is possibly a good first thing to check. Otherwise, the 'LEIPPDocPrintJob' is a simple implementation of IPP communications and it is ignoring anything other than Media you are supplying it as attributes. I could get it to pass the margins along with the job if it is possible, but it may be easier if you want to extend the method... LEIPPDocPrintJob.getPayloadHeader(..) ...as you have the specific device on-hand to check the result. Another option to check out; http://www.lohndirekt.de/software/jipsi_quickstart_drucksoftware.html It looks good although I have not used it. Let me know how you get on. cheers. I am working on a eticketing system and one of the requirements is that the application will print out real tickets at the location (it's easier for access control to print humanly easy recognizable tickets somewhere before the access control than to check the barcode electronically from a variety of paper/phone sources). So I create a PDF document via itext.jar (replacing form fields from a template with the actual data) and feed that to a printer. ... to see if that would work. The printing works, but there is a one inch gap on the top of the pdf document that I am sending to the printer. ___ Andrew Lindesay www.lindesay.co.nz ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
printing margins with LEIPPPrintService from webobjects application
I am working on a eticketing system and one of the requirements is
that the application will print out real tickets at the location (it's
easier for access control to print humanly easy recognizable tickets
somewhere before the access control than to check the barcode
electronically from a variety of paper/phone sources).
So I create a PDF document via itext.jar (replacing form fields from a
template with the actual data) and feed that to a printer.
I implemented Andrew Lindesay's
LEIPPDocPrintJob
LEIPPPrintService
LEIPPPrintServiceTest
to see if that would work. The printing works, but there is a one inch
gap on the top of the pdf document that I am sending to the printer. I
looked at some of the solutions to get rid of the 1 inch margin that
is on top of the document (search for hashprintrequestattributeset
margin), but none of them seemed to give the desired result.
Does anybody have a working example to reduce the margins to zero, so
the 8x3.25 inch PDF document would print on a 8x3.25 ticket?
I tried these:
protected HashPrintRequestAttributeSet getPrintRequestAttributeSet(){
HashPrintRequestAttributeSet as = new
HashPrintRequestAttributeSet();
as.add(BocaMedia.w576h234); // the 8 inch translates to a 576 point
document in CUPS, that's why the w576xh325 document
int x = 0; //left and right margin
int y = 0; //top and bottom margin.
int w = 576; //Width
int h = 234; //Height
int units = MediaPrintableArea.MM;
as.add(new MediaPrintableArea(x, y, w, h, units));
as.add(new JobName("ticket-page", Locale.getDefault()));
}
protected HashPrintRequestAttributeSet getPrintRequestAttributeSet()
Regards,
Johan Henselmans
http://www.netsense.nl
Tel: +31-20-6267538
Fax: +31-20-6279159
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Re: Optimistic Locking?
Hi Chan;
In general, optimistic locking will put an extra helping of WHERE
clause at the end of your UPDATE statements. The extra WHERE clause is
to check that nothing has changed in the database row since the
enterprise-object was fetched from the database -- ie; check to make
sure nobody else has fiddled the row. So if the row from table FOO
was fetched with { A=2, B=20 } then a possible UPDATE statement (with
optimistic locking "A" and "B") would be;
UPDATE FOO SET A=123 WHERE A=2 AND B=20
To see this, turn on SQL logging in your WebObjects application.
cheers.
How do I tell if Optimistic Locking is working?
I've made a EOF Model with a versions field. Everything but the id
and the versions field has the lock symbol unchecked in WoLIPS. In
my EOEditingContext delegate's editingContextWillSaveChanges method
I incremented the versions field by 1. I opened up a web page that
edits the EOF model, then used another app to change the versions
number in the database. I made some changes to the EOF model via the
web page and did a save. I don't get an error.
Is there something I need to turn on? A flag of some sort? Or am I
misunderstanding how Optimistic Locking works?
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Optimistic Locking?
How do I tell if Optimistic Locking is working? I've made a EOF Model with a versions field. Everything but the id and the versions field has the lock symbol unchecked in WoLIPS. In my EOEditingContext delegate's editingContextWillSaveChanges method I incremented the versions field by 1. I opened up a web page that edits the EOF model, then used another app to change the versions number in the database. I made some changes to the EOF model via the web page and did a save. I don't get an error. Is there something I need to turn on? A flag of some sort? Or am I misunderstanding how Optimistic Locking works? ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
