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From "Catalina Wei (JIRA)" <j...@apache.org>
Subject [jira] Updated: (OPENJPA-679) java.lang.ArrayIndexOutOfBoundsException may occur when a relation field is annotated as a primary key and a foreign key
Date Mon, 11 Aug 2008 18:46:46 GMT

     [ https://issues.apache.org/jira/browse/OPENJPA-679?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Catalina Wei updated OPENJPA-679:
---------------------------------

    Attachment: identifying_rel_test.zip

Hi All,
Attaching a test scenario provided by Gopalakrishnan U that  reproduced the ArrayIndexOutOfBoundsException
in OpenJPA .

The problem is in resolving foreignkey for the following annotation in CM class of the testcase:

@Entity
@IdClass(CM.CMId.class)
public class CM {

    @ManyToOne
    @ForeignKey
    @Id
    private E e;

Notice that the ManyToOne relation is annotated as @ForeignKey and @Id,  
OpenJpa failed in resolving the  foreignKey mapping for CM entity.

Gopal worked around this problem by 
rename class C to class WC
rename class CM to WCM

OpenJPA revolves class mapping in the alphabetic order of entity names.
As you see that by renaming C to WC and CM to WCM, the entity class E gets resolved first,
hence, the forigenKey field e in CM gets resolved correctly.

Fay's patch is to making sure that foreignKey mapping is resolved no matter to in what  the
order we resolve the entities.



> java.lang.ArrayIndexOutOfBoundsException may occur when a relation field is annotated
as a primary key and a foreign key
> ------------------------------------------------------------------------------------------------------------------------
>
>                 Key: OPENJPA-679
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-679
>             Project: OpenJPA
>          Issue Type: Bug
>            Reporter: Fay Wang
>         Attachments: identifying_rel_test.zip, openjpa_679.patch, openjpa_679_1.patch
>
>
> <openjpa-1.2.0-SNAPSHOT-rexported nonfatal general error>
> org.apache.openjpa.persistence.PersistenceException: 0
>     at
> org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java:196)
>     at
> org.apache.openjpa.kernel.DelegatingBrokerFactory.newBroker(DelegatingBrokerFactory.java:142)
>     at
> org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:192)
>     at
> org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:145)
> ....
> Caused by: java.lang.ArrayIndexOutOfBoundsException: 0
>     at
> org.apache.openjpa.jdbc.sql.DBDictionary.getForeignKeyConstraintSQL(DBDictionary.java:3373)
>     at
> org.apache.openjpa.jdbc.sql.DBDictionary.getAddForeignKeySQL(DBDictionary.java:3252)
>     at
> org.apache.openjpa.jdbc.schema.SchemaTool.addForeignKey(SchemaTool.java:1066)
>     at org.apache.openjpa.jdbc.schema.SchemaTool.add(SchemaTool.java:604)
>     at org.apache.openjpa.jdbc.schema.SchemaTool.add(SchemaTool.java:344)
>     at org.apache.openjpa.jdbc.schema.SchemaTool.run(SchemaTool.java:321)
>     at org.apache.openjpa.jdbc.meta.MappingTool.record(MappingTool.java:501)
>     at org.apache.openjpa.jdbc.meta.MappingTool.record(MappingTool.java:453)
>     at
> org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.synchronizeMappings(JDBCBrokerFactory.java:159)
>     at
> org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.newBrokerImpl(JDBCBrokerFactory.java:119)
>     at
> org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java:189)

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