Christiaan Pansegrouw

can you choose not to use transactions for entity beans - ie. it is not a must to use transactions.

Thanks , but what about the comment :

CMT is Compulsory for entity beans.

does this mean that you can ONLY use CMT for entity bean , or CMT should ALWAYS be used for entity beans - or is this also up to your ejb-container's mercy ?

Hi All

I hope my question makes sense .. . .

In the EJB HeadFirst on p509 they say for CMT: Compulsory for entity beans.

Now . . . I have been using entity beans (and session beans for that matter) without using a single <container-transaction > in the <assembly-descriptor> section in my DD(ejb.jar). Does the container automaticly use the 'Required' attribute for ALL the buisiness methods for a entity bean? (I am using JBoss btw).

As for the session beans , <transaction-type>Container/Bean</transaction-type> is always present in the <enterprise-beans> section , but what if nothing for that bean is spesified in <container-transaction > in the <assembly-descriptor> section - does the methods run in no transaction or is it also 'Required' for all by default ?

Regards

Christiaan

Hi

Hope anybody can help me , I am trying to use the eclipse.refreshLocal task in
eclipse , but it is giving me *beans* , as soon as ant tries to run that task it gives me (see below) :

PLEASE HELP !!! I am going mad

Ant could not find the task or a class this task relies upon.

This is common and has a number of causes; the usual
solutions are to read the manual pages then download and
install needed JAR files, or fix the build file:
- You have misspelt 'eclipse.refreshLocal'.
Fix: check your spelling.
- The task needs an external JAR file to execute
and this is not found at the right place in the classpath.
Fix: check the documentation for dependencies.
Fix: declare the task.
- The task is an Ant optional task and the JAR file and/or libraries
implementing the functionality were not found at the time you
yourself built your installation of Ant from the Ant sources.
Fix: Look in the ANT_HOME/lib for the 'ant-' JAR corresponding to the
task and make sure it contains more than merely a META-INF/MANIFEST.MF.
If all it contains is the manifest, then rebuild Ant with the needed
libraries present in ${ant.home}/lib/optional/ , or alternatively,
download a pre-built release version from apache.org
- The build file was written for a later version of Ant
Fix: upgrade to at least the latest release version of Ant
- The task is not an Ant core or optional task
and needs to be declared using <taskdef>.
- You are attempting to use a task defined using
<presetdef> or <macrodef> but have spelt wrong or not
defined it at the point of use

Remember that for JAR files to be visible to Ant tasks implemented
in ANT_HOME/lib, the files must be in the same directory or on the
classpath

Please neither file bug reports on this problem, nor email the
Ant mailing lists, until all of these causes have been explored,
as this is not an Ant bug.

Hi

Hope anybody can help me , I am trying to use the eclipse.refreshLocal task in
eclipse , but it is giving me beans , as soon as ant tries to run that task it gives me (see below) :

PLEASE HELP !!! I am going mad

Ant could not find the task or a class this task relies upon.

This is common and has a number of causes; the usual
solutions are to read the manual pages then download and
install needed JAR files, or fix the build file:
- You have misspelt 'eclipse.refreshLocal'.
Fix: check your spelling.
- The task needs an external JAR file to execute
and this is not found at the right place in the classpath.
Fix: check the documentation for dependencies.
Fix: declare the task.
- The task is an Ant optional task and the JAR file and/or libraries
implementing the functionality were not found at the time you
yourself built your installation of Ant from the Ant sources.
Fix: Look in the ANT_HOME/lib for the 'ant-' JAR corresponding to the
task and make sure it contains more than merely a META-INF/MANIFEST.MF.
If all it contains is the manifest, then rebuild Ant with the needed
libraries present in ${ant.home}/lib/optional/ , or alternatively,
download a pre-built release version from apache.org
- The build file was written for a later version of Ant
Fix: upgrade to at least the latest release version of Ant
- The task is not an Ant core or optional task
and needs to be declared using <taskdef>.
- You are attempting to use a task defined using
<presetdef> or <macrodef> but have spelt wrong or not
defined it at the point of use

Remember that for JAR files to be visible to Ant tasks implemented
in ANT_HOME/lib, the files must be in the same directory or on the
classpath

Please neither file bug reports on this problem, nor email the
Ant mailing lists, until all of these causes have been explored,
as this is not an Ant bug.

why 323 ?

Hi All

Which version , in our opinions is best suited for a production enviroment
, if you have to choose between :
3.2.1
3.2.3
3.2.5
3.2.6

Regards

Christiaan

Thanks for the tip and the link , sorry about asking , but I only found the search link on the page now. If you really hate answering the same question again and again , maybe it should be considered making the search link more visable.

Anyway , thanks for the help.

Hi All

I am having a problem running the client for the Advice bean (1st example) in the Headfirst book. The ejb deploys fine without any errors , and I used the deploy tool (like it is descibed in the book) to deploy and create the AdviceAppClient.jar.

Hoever , when I run the test client , I get the following exception. I have re-done the example step for step 3 times already , and I am still getting the same error.
(I am using j2sdk1.4.2 , j2ee1.3.1 , on the R1 app server)

Thanks in advance

Christiaan

My Exception :



java.rmi.RemoteException: CORBA BAD_OPERATION 0 No; nested exception is:
org.omg.CORBA.BAD_OPERATION: vmcid: 0x0 minor code: 0 completed: No
at com.sun.corba.ee.internal.iiop.ShutdownUtilDelegate.mapSystemException(ShutdownUtilDelegate.java:137)
at javax.rmi.CORBA.Util.mapSystemException(Util.java:65)
at headfirst._Advice_Stub.getAdvice(Unknown Source)
at client.AdviceClient.go(AdviceClient.java:43)
at client.AdviceClient.main(AdviceClient.java:26)
Caused by: org.omg.CORBA.BAD_OPERATION: vmcid: 0x0 minor code: 0 completed: No
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
at java.lang.Class.newInstance0(Class.java:308)
at java.lang.Class.newInstance(Class.java:261)
at com.sun.corba.ee.internal.iiop.messages.ReplyMessage_1_2.getSystemException(ReplyMessage_1_2.java:93)
at com.sun.corba.ee.internal.iiop.ClientResponseImpl.getSystemException(ClientResponseImpl.java:108)
at com.sun.corba.ee.internal.POA.GenericPOAClientSC.invoke(GenericPOAClientSC.java:132)
at org.omg.CORBA.portable.ObjectImpl._invoke(ObjectImpl.java:457)
at headfirst._Advice_Stub.getAdvice(Unknown Source)
... 2 more