[hibernate-issues] [Hibernate-JIRA] Created: (HHH-4496) Entity with composite-id and serial foreign-key one-to-many set mapping can't be saved under 3.3.x and under 3.2.x can be saved but can't fetch set to father object

[Yi, Han (JIRA)]

Entity with composite-id and serial foreign-key one-to-many set mapping can't be saved under 3.3.x and under 3.2.x can be saved but can't fetch set to father object 
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                 Key: HHH-4496
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4496
             Project: Hibernate Core
          Issue Type: Bug
    Affects Versions: 3.3.2, 3.3.1, 3.2.5
         Environment: jdk1.6.0_13
windows 2003 server
hibernate 3.2.5, 3.3.1, 3.3.2
database: postgreSQL8.4
            Reporter: Yi, Han


Mapping:
   <class name="ExtraInfo" table="extrainfo">
    <composite-id class="ExtraInfoId" name="key">
      <key-property column="sn" length="20" name="cid" type="string"/>
      <key-property column="composite" length="2" name="composite" type="string"/>
      <key-property column="fileName" length="300" name="fileName" type="string"/>
    </composite-id>
    <property name="id" generated="insert" insert="false" type="java.lang.Integer" unique="true" update="false">
      <column name="id" not-null="true"/>
    </property>
    ...
    <setinverse="true" name="scanDatas">
      <key property-ref="id">
        <column name="id"/>
      </key>
      <one-to-many class="ScanData"/>
    </set>
  </class>
  <class name="ScanData" table="scandata">
    <composite-id class="net.vuniverse.app.biochemanalysis.db.model.ScanDataId" name="key">
      <key-property column="id" name="id" type="java.lang.Integer"/>
      <key-property column="idx" name="idx" type="java.lang.Integer"/>
    </composite-id>
    <many-to-one fetch="join" insert="false" name="extraInfo" property-ref="id" update="false">
      <column name="id"/>
    </many-to-one>
    <property name="data" type="java.lang.Float">
      <column name="data" precision="8" scale="8"/>
    </property>
  </class>
Code:
ExtraInfoId eid = new ExtraInfoId("a", "1", "aa.txt");
ExtraInfo extra = new ExtraInfo(eid);
session.save(extra);
session.flush();
int id = extra.getId();
for (int i = 0; i < 3; i++) {
    ScanData sd = new ScanData(new ScanDataId(id, 1));
    sd.setData(0.5f * (i + 1));
    session.save(sd);
}
session.flush();
extra = session.createQuery("from ExtraInfo a left join fetch a.scandatas b where a.id='" + id + "'").list().get(0);
Set<ScanData> scandatas = extra.getScanDatas();
for (ScanData sd : scandatas) {
    System.out.println(sd.getData());
}


under all version, mapping can be varified correctly.
under version 3.2.5, new ExtraInfo can be saved. but the query with "left join fetch" can't return a Extra with set full of ScanData. the size of scandatas is 0.

under version 3.3.x, new ExtraInfo can't be saved. and the following exception is thrown:

java.lang.ClassCastException: java.lang.Integer
        at org.hibernate.type.ComponentType.toLoggableString(ComponentType.java:400)
         at org.hibernate.pretty.MessageHelper.collectionInfoString(MessageHelper.java:307)
         at org.hibernate.engine.Collections.processReachableCollection(Collections.java:199)
         at org.hibernate.event.def.FlushVisitor.processCollection(FlushVisitor.java:60)
         at org.hibernate.event.def.AbstractVisitor.processValue(AbstractVisitor.java:124)
         at org.hibernate.event.def.AbstractVisitor.processValue(AbstractVisitor.java:84)
         at org.hibernate.event.def.AbstractVisitor.processEntityPropertyValues(AbstractVisitor.java:78)
         at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:161)
         at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:219)
         at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:99)
         at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:49)
         at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1027)
.........


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