Hello,
ist it possible with EJB 2.0 and 2 EJBs (CMP) with Compound Primary Keays
to
use a CMR? I tried it with Netbeans 5.5 and JBoss 4.0.4. There I got
following error:
14:52:27,539 INFO [BaseLocalProxyFactory] Bound EJB
LocalHome 'StoragePoolBean' to jndi 'local/StoragePoolBean@[EMAIL PROTECTED]
'
14:52:27,544 INFO [ProxyFactory] Bound EJB Home 'StoragePoolBean' to
jndi 'StoragePoolBean'
14:52:27,551 INFO [BaseLocalProxyFactory] Bound EJB
LocalHome 'VirtualVolumeBean' to jndi 'local/VirtualVolumeBean@[EMAIL PROTECTED]
'
14:52:27,556 INFO [ProxyFactory] Bound EJB Home 'VirtualVolumeBean' to
jndi 'VirtualVolumeBean'
org.jboss.deployment.DeploymentException: Atleast one role of a
foreign-key
mapped relation****p must have key fields (or <primkey-field> is missing
from ejb-jar.xml): ejb-relation-name=SP-contains-VVs
The Beans seem to be o.k., the CMR not. My config:
<?xml version="1.0" encoding="UTF-8"?>
<ejb-jar version="2.1" xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/ejb-jar_2_1.xsd">
<display-name>mda2-EJBModule</display-name>
<enterprise-beans>
<entity>
<display-name>StoragePoolEB</display-name>
<ejb-name>StoragePoolBean</ejb-name>
<home>de.virticalsolutions.vdrive.mda.StoragePoolRemoteHome
</home>
<remote>de.virticalsolutions.vdrive.mda.StoragePoolRemote
</remote>
<local-home>de.virticalsolutions.vdrive.mda.StoragePoolLocalHome
</local-home>
<local>de.virticalsolutions.vdrive.mda.StoragePoolLocal
</local>
<ejb-class>de.virticalsolutions.vdrive.mda.StoragePoolBean
</ejb-class>
<persistence-type>Container
</persistence-type>
<prim-key-class>de.virticalsolutions.vdrive.mda.StoragePoolPK
</prim-key-class>
<reentrant>false</reentrant>
<abstract-schema-name>StoragePool</abstract-schema-name>
[...]
</entity>
<entity>
<display-name>VirtualVolumeEB</display-name>
<ejb-name>VirtualVolumeBean</ejb-name>
<home>de.virticalsolutions.vdrive.mda.VirtualVolumeRemoteHome
</home>
<remote>de.virticalsolutions.vdrive.mda.VirtualVolumeRemote
</remote>
<local-home>
de.virticalsolutions.vdrive.mda.VirtualVolumeLocalHome
</local-home>
<local>de.virticalsolutions.vdrive.mda.VirtualVolumeLocal
</local>
<ejb-class>de.virticalsolutions.vdrive.mda.VirtualVolumeBean
</ejb-class>
<persistence-type>Container</persistence-type>
<prim-key-class>de.virticalsolutions.vdrive.mda.VirtualVolumePK
</prim-key-class>
<reentrant>false</reentrant>
<abstract-schema-name>VirtualVolume</abstract-schema-name>
[...]
</entity>
</enterprise-beans>
<relation****ps>
<ejb-relation>
<description/>
<ejb-relation-name>SP-contains-VVs</ejb-relation-name>
<ejb-relation****p-role>
<ejb-relation****p-role-name>SPhasVV
</ejb-relation****p-role-name>
<multiplicity>One</multiplicity>
<relation****p-role-source>
<ejb-name>StoragePoolBean</ejb-name>
</relation****p-role-source>
<cmr-field>
<cmr-field-name>virtualVolumes</cmr-field-name>
<cmr-field-type>java.util.Collection</cmr-field-type>
</cmr-field>
</ejb-relation****p-role>
<ejb-relation****p-role>
<ejb-relation****p-role-name>VVinSP
</ejb-relation****p-role-name>
<multiplicity>Many</multiplicity>
<relation****p-role-source>
<ejb-name>VirtualVolumeBean</ejb-name>
</relation****p-role-source>
<cmr-field>
<cmr-field-name>storagePool</cmr-field-name>
</cmr-field>
</ejb-relation****p-role>
</ejb-relation>
</relation****ps>
<assembly-descriptor>
[...]
</assembly-descriptor>
</ejb-jar>
===========================================================================
The Primary Keys have no fields of the same name. I also tried to write
the
mapping in the jbosscmp-jdbc. As you will see I used e relation-table, no
forign key. But with a forign-key I got the same result. Here is my
jbosscmp-jdbc.xml:
<jbosscmp-jdbc>
<relation****ps>
<ejb-relation>
<ejb-relation-name>SP-contains-VVs</ejb-relation-name>
<relation-table-mapping>
<table-name>storagepool_has_virtualvolumes</table-name>
</relation-table-mapping>
<ejb-relation****p-role>
<ejb-relation****p-role-name>SPhasVV
</ejb-relation****p-role-name>
<key-fields>
<key-field>
<field-name>spID</field-name>
<column-name>storagepool</column-name>
</key-field>
<key-field>
<field-name>spSessionID</field-name>
<column-name>storagepool_session</column-name>
</key-field>
</key-fields>
</ejb-relation****p-role>
<ejb-relation****p-role>
<ejb-relation****p-role-name>VVinSP
</ejb-relation****p-role-name>
<key-fields>
<key-field>
<field-name>vvID</field-name>
<column-name>virtualvolume</column-name>
</key-field>
<key-field>
<field-name>vvSessionID</field-name>
<column-name>virtualvolume_session</column-name>
</key-field>
</key-fields>
</ejb-relation****p-role>
</ejb-relation>
</relation****ps>
</jbosscmp-jdbc>
===========================================================================
It would be great if someone could explain me what is going wrong here. At
the moment I am thinking about not using CMR and make all the
relation****ps
on my own. But I don't think that it's a good solution because it would be
much more code for me...
bests
Sascha Effert
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