Re: [JBoss-user] [JBossCMP2.0] Compound Primary Keys and CMR fields

[Dmitri Colebatch]

I could be way off, but...   a) <quote>      <entity>             <ejb-name>MyBean</ejb-name>             <prim-key-class>....MyKey</prim-key-class>             ...             <cmp-field><field-name>key</field-name></cmp-field>             <cmp-field><field-name>year</field-name></cmp-field>             <cmp-field><field-name>month</field-name></cmp-field>             <primkey-field>key</primkey-field>            ...      </entity> </quote>   aren't prim-key-class and primkey-field mutually exclusive?  Could that be upsetting something?    b) aren't the fields of a pk class suppose to be public?  or did that change in ejb2?   cheers dim   ----- Original Message ----- From: Luttrell, Peter To: '[EMAIL PROTECTED]' Sent: Friday, June 28, 2002 5:14 AM Subject: [JBoss-user] [JBossCMP2.0] Compound Primary Keys and CMR fields I have an entity bean with a compound primary key, where one of the fields is a cmr field. The entity bean works perfectly after the first deployment. I can set primary key, as well as do lookups and such. But after I redeploy (or restart) I get the following error, whenever i attempt to findByPrimaryKey for a valid record:   13:45:34,612 ERROR [STDERR] javax.ejb.FinderException: Find failed: javax.ejb.EJBException: Internal  error getting results for field member key Embedded Exception Unable to load a ResultSet column into a variable of type '....MyKey' 13:45:34,675 ERROR [STDERR]     at org.jboss.ejb.plugins.cmp.jdbc.JDBCAbstractQueryCommand.execute(J DBCAbstractQueryCommand.java:143) 13:45:34,690 ERROR [STDERR]     at org.jboss.ejb.plugins.cmp.jdbc.JDBCFindEntityCommand.execute(JDBC FindEntityCommand.java:44) ...   My question is, should what I am doing work? If so then this is a bug (or some other problem). If not, the beanvalidation should detect this senerio and not allow the beans deployment.   Here's some more details on what I am doing:        <entity>             <ejb-name>MyBean</ejb-name>             <prim-key-class>....MyKey</prim-key-class>             ...             <cmp-field><field-name>key</field-name></cmp-field>             <cmp-field><field-name>year</field-name></cmp-field>             <cmp-field><field-name>month</field-name></cmp-field>             <primkey-field>key</primkey-field>            ...      </entity>             <ejb-relation>             <ejb-relation-name>....</ejb-relation-name>             <ejb-relationship-role>                 <ejb-relationship-role-name>.....</ejb-relationship-role-name>                 <multiplicity>One</multiplicity>                 <relationship-role-source>                     <ejb-name>...some other bean....</ejb-name>                 </relationship-role-source>                 <cmr-field>                     <cmr-field-name>allMyBeans</cmr-field-name>                     <cmr-field-type>java.util.Collection</cmr-field-type>                 </cmr-field>             </ejb-relationship-role>             <ejb-relationship-role>                 <ejb-relationship-role-name>.....</ejb-relationship-role-name>                 <multiplicity>Many</multiplicity>                 <relationship-role-source>                     <ejb-name>MyBean</ejb-name>                 </relationship-role-source>                 <cmr-field>                     <cmr-field-name>related</cmr-field-name>                 </cmr-field>             </ejb-relationship-role>         </ejb-relation>   public class MyKey implements Serializable{       private String name;     private Integer month;     private Integer year;       public MyKey(){     }       public MyKey(Integer year, Integer month, String name){         this.name= name;         this.month = month;         this.year = year;     }       public String getName(){         return name;     }       public Integer getMonth(){         return month;     }       public Integer getYear(){         return year;     }       public boolean equals(Object obj){     }       public int hashCode(){         return getName().hashCode() ^ getYear().hashCode() ^ getMonth().hashCode();     } }   public abstract class MyBeanimplements EntityBean {       public abstract MyKey getKey();     public abstract Integer getYear();     public abstract Integer getMonth();         public abstract void setKey(MyKey key);     public abstract void setYear(Integer year);     public abstract void setMonth(Integer month);         public abstract RelatedLocal getRelated();     public abstract void setRelated(RelatedLocal related);       public MyKey ejbCreate(Integer year, Integer month, String name)             throws CreateException {           MyKey key = new MyKey(year, month, name);         setKey(key);           setYear(year);         setMonth(month);         return null;     }       public void ejbPostCreate(Integer year, Integer month, String name) {                          RelatedHomeLocal home =          RelatedLocal related = home.findByPrimaryKey(name);         setRelated(related);     }     ..... } This transmission contains information solely for intended recipient and may be privileged, confidential and/or otherwise protect from disclosure. 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