I did notice one other thing. When I try to get a User, I am running into a
problem there the server is saying:
Exception in thread "main" java.rmi.ServerException: RemoteException occurred in
server thread; nested exception is:
java.rmi.ServerException: Load failed
Embedded Exception
ERROR: Attribute 'playlistbean_user' not found
; nested exception is:
javax.ejb.EJBException: Load failed
Embedded Exception
ERROR: Attribute 'playlistbean_user' not found
I don't know why when trying to get a user on it's own that is happening, but I
actually don't want that. I want to be able to instantiate Users on their own
and not have a guaranteed relationship to a Playlist.
When I take the "<relationships>" section out of the ejb-jar.xml and
jbosscmp-jdbc.xml files the User works again. Did I do something wrong here.
Actually the relationship is not really one-to-one now that I think about it.
It's actually:
Playlist to User
------------------
many to one
none to one
Meaning that a User can have 0+ Playlists. How is that represented? I'll keep
playing!
--
-bk
Quoting Brandon Knitter <[EMAIL PROTECTED]>:
> Well, I'm on with my learning and now running into another problem. I've
> been
> racking my head for 3 hours now and have opened up the source examples I
> got
> with the book from JBoss, and I'm just stuck.
>
> 1) Is there a way to turn on really high debugging on the server so that I
> can
> see what's going on during this EJB's run? I'm getting errors on the
> remote
> client that aren't as helpful as the ones I might get from the EJB
> Container.
>
> 2) Here's my error I'm getting when I try to ask for a data element view:
>
> Exception in thread "main" java.rmi.ServerException: RemoteException occurred
> in
> server thread; nested exception is:
> java.rmi.ServerException: Internal error getting results for field
> member userId
> Embedded Exception
> Unable to load to deserialize result: java.io.StreamCorruptedException:
> invalid
> stream header; nested exception is:
> javax.ejb.EJBException: Internal error getting results for field
> member
> userId
> Embedded Exception
> Unable to load to deserialize result: java.io.StreamCorruptedException:
> invalid
> stream header
> at
> sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:292)
>
>
> Let me know what I screwed up now. I know I'm close! :)
>
> I've looked through all the examples and I know I'm close. Just for some
> background, I am only trying to get the User for a Playlist (one-to-one),
> so
> it's really nothing special. I followed the cmp-example from the docs
> subscription, as well as followed my Wrox Pro EJB book.
>
> If you need anything else, please let me know!
>
> ejb-jar.xml and jbosscmp-jdbc.xml follow:
>
> == BEG ejb-jar.xml ==
> <?xml version="1.0"?>
>
> <!DOCTYPE ejb-jar PUBLIC
> "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN"
> "http://java.sun.com/j2ee/dtds/ejb-jar_2_0.dtd";>
>
> <ejb-jar>
>
> <enterprise-beans>
> <entity>
> <ejb-name>PlaylistBean</ejb-name>
>
> <!-- remote stuff -->
> <home>org.blandsite.music.play.PlaylistHome</home>
> <remote>org.blandsite.music.play.Playlist</remote>
>
> <!-- Local stuff -->
> <local-home>org.blandsite.music.play.PlaylistLocalHome</local-home>
> <local>org.blandsite.music.play.PlaylistLocal</local>
>
> <ejb-class>org.blandsite.music.play.PlaylistBean</ejb-class>
>
> <prim-key-class>java.lang.Integer</prim-key-class>
> <primkey-field>playlistId</primkey-field>
>
> <persistence-type>Container</persistence-type>
> <reentrant>True</reentrant>
>
> <cmp-version>2.x</cmp-version>
>
> <abstract-schema-name>playlists</abstract-schema-name>
>
>
> <cmp-field><field-name>playlistId</field-name></cmp-field>
> <cmp-field><field-name>userId</field-name></cmp-field>
> <cmp-field><field-name>name</field-name></cmp-field>
>
> <ejb-local-ref>
> <ejb-ref-name>comp/env/ejb/UserLocal</ejb-ref-name>
> <ejb-ref-type>Entity</ejb-ref-type>
> <local-home>org.blandsite.music.user.UserLocalHome</local-home>
> <local>org.blandsite.music.user.UserLocal</local>
> <ejb-link>UserBean</ejb-link>
> </ejb-local-ref>
> <ejb-ref>
> <ejb-ref-name>comp/env/ejb/User</ejb-ref-name>
> <ejb-ref-type>Entity</ejb-ref-type>
> <home>org.blandsite.music.user.UserHome</home>
> <remote>org.blandsite.music.user.User</remote>
> <ejb-link>UserBean</ejb-link>
> </ejb-ref>
>
> </entity>
> <entity>
> <ejb-name>UserBean</ejb-name>
>
> <!-- remote stuff -->
> <home>org.blandsite.music.user.UserHome</home>
> <remote>org.blandsite.music.user.User</remote>
>
> <!-- Local stuff -->
> <local-home>org.blandsite.music.user.UserLocalHome</local-home>
> <local>org.blandsite.music.user.UserLocal</local>
>
> <ejb-class>org.blandsite.music.user.UserBean</ejb-class>
>
> <prim-key-class>java.lang.Integer</prim-key-class>
> <primkey-field>userId</primkey-field>
>
> <persistence-type>Container</persistence-type>
> <reentrant>True</reentrant>
>
> <cmp-version>2.x</cmp-version>
>
> <abstract-schema-name>users</abstract-schema-name>
>
>
> <cmp-field><field-name>userId</field-name></cmp-field>
> <cmp-field><field-name>username</field-name></cmp-field>
> <cmp-field><field-name>password</field-name></cmp-field>
> <cmp-field><field-name>firstname</field-name></cmp-field>
> <cmp-field><field-name>lastname</field-name></cmp-field>
> <cmp-field><field-name>emailAddress</field-name></cmp-field>
> <cmp-field><field-name>bitrate</field-name></cmp-field>
> <cmp-field><field-name>playlink</field-name></cmp-field>
>
> </entity>
> </enterprise-beans>
>
> <relationships>
> <ejb-relation>
> <ejb-relation-name>PlaylistBean-UserBean</ejb-relation-name>
> <ejb-relationship-role>
> <ejb-relationship-role-name>
> PlaylistBean
> </ejb-relationship-role-name>
> <multiplicity>One</multiplicity>
> <relationship-role-source>
> <ejb-name>PlaylistBean</ejb-name>
> </relationship-role-source>
> <cmr-field>
> <cmr-field-name>user</cmr-field-name>
> </cmr-field>
> </ejb-relationship-role>
> <ejb-relationship-role>
>
> <ejb-relationship-role-name>UserBean</ejb-relationship-role-name>
> <multiplicity>One</multiplicity>
> <relationship-role-source>
> <ejb-name>UserBean</ejb-name>
> </relationship-role-source>
> </ejb-relationship-role>
> </ejb-relation>
> </relationships>
>
> <assembly-descriptor>
> <container-transation>
> <method >
> <ejb-name>PlaylistBean</ejb-name>
> <method-name>*</method-name>
> </method>
> <method >
> <ejb-name>UserBean</ejb-name>
> <method-name>*</method-name>
> </method>
> <trans-attribute>Required</trans-attribute>
> </container-transation>
> </assembly-descriptor>
>
> </ejb-jar>
> == END ejb-jar.xml ==
>
> == BEG jbosscmp-jdbc.xml ==
> <jbosscmp-jdbc>
> <enterprise-beans>
> <entity>
> <ejb-name>PlaylistBean</ejb-name>
> <table-name>playlists</table-name>
> <datasource>java:/JukeboxDS</datasource>
> <type-mapping>PostgreSQL</type-mapping>
> <debug>true</debug>
> <create-table>false</create-table>
> <remove-table>false</remove-table>
> <read-only>false</read-only>
> <time-out>300</time-out>
> <select-for-update>false</select-for-update>
> <pk-constraint>false</pk-constraint>
>
> <cmp-field>
> <field-name>playlistId</field-name>
> <column-name>playlist_id</column-name>
> </cmp-field>
>
> <cmp-field>
> <field-name>userId</field-name>
> <column-name>user_id</column-name>
> </cmp-field>
>
> <cmp-field>
> <field-name>name</field-name>
> <column-name>name</column-name>
> </cmp-field>
>
> </entity>
>
> <entity>
> <ejb-name>UserBean</ejb-name>
> <table-name>users</table-name>
> <datasource>java:/JukeboxDS</datasource>
> <type-mapping>PostgreSQL</type-mapping>
> <debug>true</debug>
> <create-table>false</create-table>
> <remove-table>false</remove-table>
> <read-only>false</read-only>
> <time-out>300</time-out>
> <select-for-update>false</select-for-update>
> <pk-constraint>false</pk-constraint>
>
> <cmp-field>
> <field-name>userId</field-name>
> <column-name>user_id</column-name>
> </cmp-field>
>
> <cmp-field>
> <field-name>username</field-name>
> <column-name>uid</column-name>
> </cmp-field>
>
> <cmp-field>
> <field-name>password</field-name>
> <column-name>pwd</column-name>
> </cmp-field>
>
> <cmp-field>
> <field-name>firstname</field-name>
> <column-name>fn</column-name>
> </cmp-field>
>
> <cmp-field>
> <field-name>lastname</field-name>
> <column-name>ln</column-name>
> </cmp-field>
>
> <cmp-field>
> <field-name>emailAddress</field-name>
> <column-name>email</column-name>
> </cmp-field>
>
> <cmp-field>
> <field-name>bitrate</field-name>
> <column-name>bitrate</column-name>
> </cmp-field>
>
> <cmp-field>
> <field-name>playlink</field-name>
> <column-name>playlink</column-name>
> </cmp-field>
>
> </entity>
> </enterprise-beans>
>
> <relationships>
> <ejb-relation>
> <ejb-relation-name>PlaylistBean-UserBean</ejb-relation-name>
> <foreign-key-mapping>
> <ejb-relationship-role>
> <ejb-relationship-role-name>
> PlaylistBean
> </ejb-relationship-role-name>
> <foreign-key-fields>
> <foreign-key-field>
> <field-name>userId</field-name>
> <column-name>user_id</column-name>
> </foreign-key-field>
> </foreign-key-fields>
> </ejb-relationship-role>
> <ejb-relationship-role>
> <ejb-relationship-role-name>
> UserBean
> </ejb-relationship-role-name>
> <foreign-key-fields/>
> </ejb-relationship-role>
> </foreign-key-mapping>
> </ejb-relation>
> </relationships>
> </jbosscmp-jdbc>
> == END jbosscmp-jdbc.xml ==
>
>
>
>
>
>
>
>
> --
> -bk
>
>
>
>
>
>
> _______________________________________________________________
>
> Don't miss the 2002 Sprint PCS Application Developer's Conference
> August 25-28 in Las Vegas -- http://devcon.sprintpcs.com/adp/index.cfm
>
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>
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