It's not difficult to do it. One option: Pass the session identifier in to the
applet as a parameter. Another possibility is to have the applet use NSObject
to execute JavaScript.
I haven't actually tried either of these.
View the original post :
No ideas on this? It sure would be nice to have a properties file somewhere in
JBoss that is external to the EAR that lets me define parameters that are
visible to Seam. Like the location of an uploads directory, etc.
View the original post :
I could do that, but isn't the app classpath all within the EAR? I want to be
able to ship out an EAR file on a CD and have the sysadmin (who knows nothing
about any of this stuff) be able to copy it into a directory and say, I'm
done.
My idea right now is to try to do this the JBoss Way.
From reading a bunch of pages on the Wiki it looks like what I need to do is
set up a SAR with a simple persistent xmbean in it. Then I need to have my
application EJBs find and connect to the mbean that's in the SAR. A bit
cumbersome but a workable solution. Is this the right way to go?
I just got my SAR working and it is persistent. Now I have to get access to
the SAR's mbean from within the EAR. That seems like that should be easy. And
the persistent SAR itself was pretty easy, and this is a nice way to do all
this, so config parameters can be used from the jmx-console.
Actually using MBeans is better than just having it read a config file
somewhere. With the bean, I get to store properties, and yes, that is more
cumbersome than putting them in a config file. But I get to do more: I can
have the bean not only store the path to the file storage directory, but
The IDE tools need to catch up with the power of Seam. One thing for catching
facelet file validity: I have a task in my ant build.xml file which creates an
exploded EAR file. That is what I deploy during development. I have another
task in the build.xml file which pushes all the current
Simple question: What is the way to store application configuration information
outside the EAR file? For example: my app allows users to upload lots of
content. I'll be storing this in the filesystem, not the DB (I know, there are
pros and cons to both approaches).
There are a few other
I was too quick when I said it works. It works most of the time, but not all
the time. I get errors like:
javax.faces.FacesException: javax.el.ELException: /layout/menu.xhtml @12,51
rendered=#{s:hasRole('admin')}: Function 's:hasRole' not found
| at
It seems to be happening when I invoke an action from that page by clicking a
button, which hits some action in my FooHome extends EntityHome object. I can
research this some more if it would help.
View the original post :
To answer your questions:
1. Seam works with either EJB3 or Hibernate. I'm using EJB3 in my projects
because EJB3 is a standard. I think that Hibernate itself is a bit more
powerful in what it can do. Under the hood, JBoss EJB3 is based on Hibernate I
believe.
2. Don't use Tomahawk. I
Simple question here: A user has to enter a series of serial numbers on a form.
We don't know in advance how many serial numbers the user will enter. It
could be five or fifty.
What would be cool is if a new text field would get added when the last empty
one is filled in.
I'm sure there's
Actually I mean DHTML, not AJAX.
Anyway, in this case, it might be better for me to have a scrollable panel that
opens up, and provide a couple hundred number fields, and be done with it.
Easy to implement, and if we need something more advanced later, I'll change it.
View the original post
And it looks like the problem is in org.jboss.seam.util.EL:
| import com.sun.el.ExpressionFactoryImpl;
| import com.sun.el.lang.VariableMapperImpl;
|
which means that Seam is still dependent on the Sun EL RI, while JBoss AS has
switched, and packaging the Sun RI in the EAR causes
Further checking, the Sun RI is used in only two files in Seam:
./main/org/jboss/seam/util/EL.java:import com.sun.el.ExpressionFactoryImpl;
| ./main/org/jboss/seam/util/EL.java:import
com.sun.el.lang.VariableMapperImpl;
| ./main/org/jboss/seam/jsf/SeamELFunctionMapper.java:import
[EMAIL PROTECTED] wrote : I think you may need to have that JAR around.
It seems like that jar would mess up other things. Reading Michael Yuan's blog:
http://www.michaelyuan.com/blog/2007/05/29/seam-book-examples-updated-to-jboss-as-420-ga/
There is now a JIRA open on it:
By the way this shows why classes which are not public should not be labeled
public. My guess is that com.sun.el.*Impl should have default permissions so
external projects couldn't specify them directly.
View the original post :
When I put the jars in the war/WEB-INF/lib, I get:
SEVERE: Error Rendering View[/index.xhtml]
| com.sun.facelets.FaceletException: Could not instantiate
feature[compiler.ExpressionFactory]:
org.jboss.seam.ui.facelet.SeamExpressionFactory
| at
I put el-ri.jar in the WEB-INF/lib, and got the same
java.lang.NoClassDefFoundError: com/sun/el/ExpressionFactoryImpl.
I then put the el-ri.jar directly in the ear, and added it as a module in
application.xml, and... it works! I tested it and it lets me run the
restricted factory method. I
Yes, it's AS 4.2.1 GA.
Release ID: JBoss [Trinity] 4.2.1.GA (build: SVNTag=JBoss_4_2_1_GA
date=200707131605)
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Built on Friday the 13th, note!
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Simple question: I'm using EntityHome objects to manage a bunch of entities.
Therefore I have FooHome to manage Foos, etc. Of course FooHome has to have a
@Name annotation:
@Name(fooHome)
for it to be a Seam component.
I can do all my stuff to Foos using fooHome.instance. And if I want to
Simple question: When I create a session bean, I need to create the bean
itself, and then an interface for the bean, with a @Local tag. For example,
FooAction, and then @Local interface Foo.
This is probably an obvious question, but...
Why is no interface needed with actions which extend
Cool, that eliminates all the possible bugs of making a mistake in the
application.xml list of modules.
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I have a factory method that is restricted, like this:
@Out(required=false) ListUser userList;
|
| @Factory(userList)
| @Restrict(#{s:hasRole('admin')})
| public void listUsers() {
|
This is the first time I have tried using @Restricted, so it's not like other
I looked some more and the missing class is defined in el-ri.jar . But I
thought that that jar should no longer be used in JBoss 4.2.1. This means that
some Seam class is compiled to look for the com.sun.el.ExpressionFactoryImpl
class. Is there a work-around for this?
Everything else is
Simple question: Seam requires a ton of jar files to handle everything like
JBoss Rules, etc. It's annoying to have to list them all as modules in the
application.xml. I know that the latest version of the EAR standard says that
I can put JAR files in a /lib directory in the EAR. Is that
This is a very interesting thread, I will be following closely.
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I've looked through all the detailed logs. It is completely strange. It does
in fact identify that there is a test component, it just never installs it and
doesn't say why. Is there any way to solve this? I assume I'm not the first
to try Seam 1.2.1 with JBoss 4.2.1? What's strange is that
I got it working, using:
http://chiralsoftware.com/blog/PropertyNotFoundException-Target-Unreachable-identifier-resolved-to-ead71296c05a98ec.html
blog entry
Conclusion: Wrong seam jar file in WEB-INF/lib. I'm not sure how that
prevented the ejbs from being installed, but it did. Debugging
tonylmai wrote : Hello all,
|
| I've just upgraded JBoss to 4.2.1. How do I get configure Seam 1.2.1GA to
work with JBoss 4.2.1? I remember reading some postings about not needing to
run jems installer.
|
| Can someone help?
|
| Thanks
AFAIK the JEMS installer is gone as of 4.2.
My understanding is that conversation scope is almost always the right scope.
If you're doing a search, you want conversations so that users can do multiple
different searches in different tabs, right?
View the original post :
It is not easy. This is what I went through to get a plain old seam-gen app to
work within JBoss 4.2.1:
http://chiralsoftware.com/blog/JBoss-Application-Server-with-Java-6-ab298ea104a78da7.html
View the original post :
http://www.jboss.com/index.html?module=bbop=viewtopicp=4067253#4067253
How are you getting Seam to manage your entities? I am trying everything I can
think of and none of the entities are showing up within any Seam context. It's
strange because I was able to modify a seam-gened app to work, but my own app,
it's like the EJBs aren't there at all.
View the
It's quite agonizing. Seam is an incredible system, but realistically it can
take a week or more just to configure an application to say hello world,
unless seam-gen managed to get it right. With JBoss 4.2.1, seam-gen needs a
lot of help to work.
View the original post :
I have a JAR file with what I think are Seam components in it. The thing is,
none of them are being registered to Seam. I'm beating my head against the
wall here. Is there some way to force Seam to register a component, or else is
there some way to ask Seam why it didn't scan components from
I'm using 1.2.1. I'm having a devil of a time with it, so I'm not even going
to try to use pre-release stuff right now.
There is definitely a components.xml in META-INF and Seam is scanning it. I
setup a component like this:
| factory name=remoteAddr auto-create=true
|
Ah... let's see, how do I start it in debug mode?
This might solve my problems.
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And by the way, Christian, you are partially responsible for me being in this
mess because I wouldn't have gotten launched into the whole ORM thing if I
hadn't read the first edition of your book! I read it, realized that I had to
be using ORM because trying to mess around with SQL in an
Thanks for the hint on enabling debugging. Now it is getting stranger, because
it is finding the components:
| 21:38:36,965 DEBUG [Scanner] found: rbcworkflow/beans/TestAction.class
| 21:38:36,967 DEBUG [ComponentScanner] found component class:
rbcworkflow/beans/TestAction.class
|
So
I've been trying for two days to get a Seam app, with some very simple
persistent EJB3 entities, to run within JBoss 4.2.1. Is this even possible?
If anyone has an example of a .ear file that uses Seam that will run in JBoss
4.2.1 please let me know. I'm also trying to use Seam-gen. I'm
I'm sure this is some minor system config issue, but I'm puzzled. I unzipped
JBoss AS 4.2.1 and run it and it fails with this exception:
17:17:14,000 WARN [BasicMBeanRegistry]
javax.management.MBeanRegistrationException: preRegister() failed:
Really, is JBoss 4.21 that unhappy with Java 6? That's a bit annoying given
how much faster Java 6 is, and it has been out for over a year now. But I'll
try it.
What's strange is that my other computer is running Java 6 and it lets JBoss
4.2.1 start up. Hmm.
View the original post :
It's a trivial problem. The identity that JBoss is looking for must be in
/etc/hosts.
http://chiralsoftware.com/blog/JBoss-Application-Server-with-Java-6-ab298ea104a78da7.html
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Or, properly formatted link:
http://chiralsoftware.com/blog/JBoss-Application-Server-with-Java-6-ab298ea104a78da7.html
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Reply to the post :
I have an EJB application, which uses a Swing desktop interface. I'm finding
that, while Swing can produce better UIs than are possible in web apps,
developing in Swing is slower and more painful than developing in good ole'
JBoss Seam (side note: it would be super-cool if there were some
I haven't tried running Seam outside of JBoss (ie in standalone) and I haven't
yet tried Seam 2. I'll try Seam 1.21 in standalone with EJB3 embedded at some
point. It would be quite useful to get that working. Sometimes I really want
to use the neat features of Seam and EJB3 without
Is there any way to do this within JBoss, ie, to have a task that runs on some
specific day of the month? I can see in the scheduler documentation
(http://docs.jboss.org/jbossas/jboss4guide/r5/html/ch10.html#ch10.sched) that I
could have it call a method every 24 hours, for example, so an easy
I'm getting a constraint violation exception. Here's what's going on:
1. I create a new entity, and persist it, using the SMPC.
2. I then do a batch update: entityManager.createQuery().executeUpdate(). This
query changes all the objects in a class to have a value that is the new entity
that
I'm wondering if it's related to:
http://jboss.com/index.html?module=bbop=viewtopicp=3893197
Any ideas would be welcome.
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Reply to the post :
I found the solution: do an entityManager.flush() after doing the persist(), to
flush the new entity to the underlying DB, so that Postgres will be at peace
with the universe.
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Reply to the post :
I'm trying to do a bulk update query like this:
update Foo
| set status = 99
| where address.city = :x
|
This isn't working. It's throwing an SQL error:
javax.persistence.PersistenceException:
org.hibernate.exception.SQLGrammarException: could not execute update query
|
I'm doing an EJB query, where I'm getting the sum of a value of some objects.
If that query doesn't match any objects (rows), the value being returned is
null. Does this make sense, or is there some other problem in my query?
View the original post :
I did some experiments with some more queries, and indeed, it looks like if you
take the sum() of an empty set of objects you get null, not zero. I just
checked it and I get the same behavior in SQL itself.
View the original post :
One of the main reason incorrectly-written Swing apps are bad is that people do
work on the event disptach thread (EDT). They'll have some event handler which
loads and parses the file right within the event dispatcher itself. If the
file can load and parse in 0.05 seconds, fine, but if it
I'd love to see a NetBeans module that could handle all this. Right now I'm
using NetBeans as my IDE but it's not doing anything Seam-specific for me.
I'd double-plus love to see a Matisse-style GUI builder that links to Seam
components in some way.
But Seam and Matisse and all that are all
Well, SwingWorker itself is a lot different from just handling things
asynchronously. It's a thread class that you sub-class, and you have a few
methods:
doInBackground: When the SwingWorker is executed, this is the part that starts
running. Obviously it happens in a thread so the GUI keeps
Ahh, ok, I said I was a Seam newbie and now it is confirmed. I need to look up
@Asynchronous because from the name of it, that sounds like what I want.
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Reply to the post :
Ok, now I am finding out more: it seems like the security check doesn't happen
until a secured method is invoked, and if the security check fails, it just
throws an exception. This seems ridiculous, but that's what I'm finding in
docs like this:
Why are you using var binary for storing a password? Why not just store it as
chars and use some reasonable encoding, like UTF-8?
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Reply to the post :
Oh and to answer your question: It sounds to me like you might need to write a
custom subclass of one of JBoss's LoginModule classes. It's not hard to do.
But what you're doing doesn't sound like it makes sense. If your passwords are
hashed, you should hex encode them before storing them,
I'm trying to get JAAS to work with remote connections to a server. What
happens is it needs to make an initial connection without any login
information. It checks some status things on the server. If that's ok, it
then can send login information. Due to user errors it's possible that a
I found out what was happening, sort of: the thread that's creating my
InitialContext just silently dies. I don't get it. The thread itself
collapses. I put:
InitialSystem.out.println(start);
| Context context = new InitialContext(properties);
| System.out.println(done.);
I see the
And I found out the problem: The thread died because some jar wasn't in the
path. This is bad for a thread to die silently, and it is a bug in Java, but
oh well, I got that fixed.
Now I have the whole thing working as long as the password is correct for the
login. This is big progress. But
This system is madenning. Who could write a whole security infrastructure but
not provide a way for a user to do a simple username / password login like
people have been using for the past several decades? All I want is to be able
to log in and use JNDI to look up remote objects, but if the
Let's say I'm making an accounting system. I have Invoices, and on Invoices I
have Products. Every invoice can have a set of one or more products, and there
could be duplicates. Every product could show up on any number of invoices.
The relationship is uni-directional. The Product doesn't
I figured out the problem, but not the solution.
Here's the problem:
I have a uni-directional Collection in my Invoice:
@Entity class Invoice {
|
|@OneToMany CollectionProduct getProducts();
|
| }
This results in creating a join table, with a unique constraint on the
product_id
I ended up creating a placeholder entity. If that's the only way to do this,
that's an unfortunate defect in the EJB3 spec. If there is some way please let
me know.
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Reply to the post :
Here's the situation:
I have an entity that refers to other entities, like this:
@Entity public class Invoice implements Serializable {
|@ManyToOne private transient Customer customer;
| }
It must implement Serializable so I can send it to message queues.
I labeled the customer field
So what do I want to use to re-attach a detached entity? I think in Hibernate
I would use session.refresh(entity). What would it be in EJB3?
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Reply to the post :
Speaking of SeamGen: I have one small bug fix for it: The Linux shell script
should start with #!/bin/sh, not #/bin/sh. Without the #!, it doesn't execute
poperly for tcsh users.
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Reply to the
I'm pretty sure I know what's going on.
Your interface is not a Seam-managed entity. Therefore the Seam-entity's scope
specification doesn't apply to it. But when you use the real Seam entity, and
not the interface, then those rules DO apply and you can't outject it to a
wider context than
And I tried something like this:
@TransactionManagement(TransactionManagementType.BEAN)
| public class .
|
| @Resource SessionContext sessionContext;
|
| public void beanSend() {
| final UserTransaction userTransaction =
sessionContext.getUserTransaction();
I gave up on it, and put everything that I need into Serializable fields. This
is unfortunate that I can't find out how to attach it to an EntityManager from
within the MDB, but I've tried a bunch of stuff all evening and nothing works.
Any suggestions would be welcome.
View the original
And just for fun I also tried events.raiseTransactionSuccessEvent() and that
just threw a NullPointerException. I would guess that that method would raise
an event that happens AFTER the method / transaction is finished, which is what
I want to happen, but it's just throwing
Ah it's always the little things that make the big differences. I'll try that.
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I tried that and IT WORKED! The message-sending method gets called after the
transaction has committed successfully and then the message processor can see
the entity in the persistence context, as is needed.
My one suggestion would be, in the raiseTransactionSuccessEvent, if the
[EMAIL PROTECTED] wrote : This is very dangerous stuff. Hibernate entities
should never be used in two concurrent transactions/persistence contexts. You
will need some kind of DTOish thing to work around.
Wait are you saying that even if I use this events trick to send the message
AFTER the
Cool, thanks for letting me know because I would just be guessing otherwise.
Now my final dumb question: What's the right way to re-attach an entity? This
entity has been serialized, so all its collections have been lost (they are
marked transient). If I go entityManager.merge(myEntity) I
Java 6 is noticably faster than earlier versions in general use. I use it with
NetBeans and it's nicer. I think startup of JBoss is also faster.
There are problems running JBoss with Java 6! The main problems that I have
encountered are that JBoss unfortunately includes many JARs for
Let's say I use the super-handy feature of components.xml with something like
this:
factory name=logList value=#{queryLogList.resultList}/
| framework:entity-query name=queryLogList
| ejbql=from LogMessage lm max-results=100 /
|
But what if I want to have a
Here's the situation: I have a Seam SFSB which creates an entity and persists
it. It does this using a SMPC. The method that does the persisting also sends
the same entity to a message driven bean (MDB) on this same server. The MDB
needs this entity to be attached so it can look at various
Actually one crazy thing I could do is inject the plain old EntityManager that
isn't the SMPC and use that to do the persist, and then I suppose the MDB will
see the Entity, because it will be using the same EM. Would that work?
View the original post :
Tried that and it didn't work. Obviously even if I'm using the old
@PersistenceContext annotation, I'm still bound to use the transaction created
by Seam or the container so I can't do a commit() while the method is still
running. Hmmm.
View the original post :
I just now tried to use an @Observer. It was in the same class as the class
that is doing all this. Anyway, the @Observer got triggered but it acted just
like a regular function call, in other words, it happened within the method's
transaction.
Surely there's some way to do some things AFTER
Action can be a call to a method in a session bean. If that method returns a
string, that string is used as the view identifier. If that method has no
return (void) or it returns null, then the view specified by view= is used as
the view. If the action returns null AND there is no view=,
Call me old fashioned but I'm in the camp that says that the logging system
should be brain-dead-simple and should never cause errors and should always
work. It exists to debug and diagnose other problems. I shouldn't have to
debug and diagnose it.
Now, what's happening here is we need TWO
I'm going to start using them. Most of the grunt work is the same all over the
place so it would be cool if I can get it all from one class.
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Reply to the post :
In my experience, I end up deleting most of my logging statements as I finish
pieces of code. They help me a lot when I'm trying to get the basic code
going. I might put 5 log statements in a simple method sometimes, if I really
can't figure out why it's not working. After I get it fixed I
What else is going on in components.xml? I'm guessing your EM is not being
attached to your DS correctly.
View the original post :
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Reply to the post :
Of course it should render editUser.xhtml in your example. That is the action
you have specified. In most cases the action is a snip of EL that gets called,
and the string that results from that call is used as the next view. In your
case, you have used a static string instead of EL. It's
Simple problem: I want to have a selectonemenu where the labels are strings (as
usual) and the values are objects. For example, let's say that the user can go
to a checkout page and select a shipping address: home, business, or other.
Those have labels, but the value is an Address object.
COOL! That's exactly what I'm talking about. A select menu where the values
are entities. This is a pretty common usage but it's not something which is
handled well in any of the existing systems (whether JSP, JSF, or even PHP or
whatever). If there's a good Seam solution that would be
Ok I may go ahead and try that.
Btw here's the link:
http://wiki.jboss.org/wiki/Wiki.jsp?page=SeamSelectItemsNewDesign
View the original post :
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Reply to the post :
I have had multiple DataModels in SFSBs and had no problems, but I have always
used @DataModel on a variable, not on a method. Also I would think that
@Factory and @DataModel should not be on the same thing.
Try putting your @DataModels as variables, and leave your @Factorys on the
I'm just going to do this in the simple way, which is setting components in the
SFSB and then having the SFSB handle it when persist() or whatever is called.
At some point when a time picker is packaged and ready to go I'll try it.
View the original post :
Quick question: I'm using SMPC but my EntityManager is not named entityManager.
What do I put in my components.xml to fix that?
I'm eager to try this now because it looks like exactly the right way to do
this. I guess I will switch to 1.1.5 in the near future so I'll try that also.
View the
I tried it like this:
selectitems:config entity-manager=#{smpc} /
|
| component name=smpc
| class=org.jboss.seam.core.ManagedPersistenceContext
| property
name=persistenceUnitJndiNamejava:/EntityManagerFactories/smpcData/property
| /component
|
and
Ok, I had a few problems, which I sorted out (I still have a lot of problems
but at least these are now sorted).
First, if I'm using an unusual name for the entityManager, I need to do this:
framework:entity-query entity-manager=#{smpc} name=queryStoreList
ejbql=from Store s /
and then I need
I looked at the HTML output and I can see that the option values are being
correctly set as the entity IDs. So, now I really don't understand this. Hmm.
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