Hi Craig,
thanks. Indeed it seems that the error is triggered by declaring a field
as 'Optional'.
I thought I had seen an update note that 'Optional' would be supported
by the latest milestone of DataNucleus, but I can't find it anymore.
I uploaded the patch to JIRA.
Next step is likely to update the implementation.
Cheers,
Tilmann
On 30-May-16 21:31, Craig Russell wrote:
Hi Tilmann,
On May 30, 2016, at 6:10 AM, Tilmann Zäschke <zaesc...@gmx.de> wrote:
Dear all,
I'm trying to implement the schema for the new Optional test, but I keep
running into a ClassCastException:
javax.jdo.JDOFatalInternalException: Failed to generate new Mapping of type
org.datanucleus.store.rdbms.mapping.java.OptionalMapping, exception : Failed to
generate new Mapping of type
org.datanucleus.store.rdbms.mapping.java.ObjectMapping, exception :
org.datanucleus.store.rdbms.mapping.java.EmbeddedPCMapping cannot be cast to
org.datanucleus.store.rdbms.mapping.java.PersistableMapping
java.lang.ClassCastException:
org.datanucleus.store.rdbms.mapping.java.EmbeddedPCMapping cannot be cast to
org.datanucleus.store.rdbms.mapping.java.PersistableMapping
at
org.datanucleus.store.rdbms.table.ColumnCreator.createColumnsForField(ColumnCreator.java:253)
at
org.datanucleus.store.rdbms.mapping.java.ReferenceMapping.createPerImplementationColumnsForReferenceField(ReferenceMapping.java:487)
....
I'm not mentioning 'embedded' anywhere, so I'm not sure where this assumption
of 'embedding' comes from.
I think that Optional itself is treated as embedded. I’d investigate which field is causing
the problem by trying, one at a time, Optional<?>, Optional<OptionalSample>,
etc. and see whether any of these is ok.
But is Optional even claimed to be supported by datanucleus? I haven’t seen any
mail on the subject…
Craig
I do have Fields of type 'Object', but other tests also don't seem to require
embedded=false or similar to handle field of type Object that reference PCs.
I'm also not even sure (or how I can find out) which of my mapping files are
wrong. The error is the same for application-identity and datastore-identity.
It occurs wile calling makePersistent().
I'm using the latest 'trunk' of the JDO TCK.
I also also consistently get the following error, but it seems to be a
different issue:
Error copying implementation log file: Source
'C:\Users\ztilmann\Desktop\projects\workspace-jdo\JDO\tck\datanucleus.txt' does
not exist
Could anyone have a look and tell me what I'm doing wrong? I can also provide
if the mistake is not obvious. Code snippets are below.
Cheers,
Tilmann
Code snippet (error occurs in last line in makePersistent):
@Override
protected void localSetUp() {
addTearDownClass(OptionalSample.class);
insertOptionalSample(getPM());
}
private void insertOptionalSample(PersistenceManager pm) {
Transaction tx = pm.currentTransaction();
try {
tx.begin();
//create a dummy object as target
OptionalSample dummyPC = new OptionalSample();
dummyPC.setId(DUMMY_ID);
pm.makePersistent(dummyPC);
...
}
}
Here are the schemas:
public class OptionalSample {
long id;
Optional<OptionalSample> optionalPC;
Optional<?> optionalAny;
@SuppressWarnings("rawtypes")
Optional optionalNoGenerics;
Object any;
Optional<Date> optionalDate;
Optional<Integer> optionalInteger;
Optional<String> optionalString;
...
}
package.jdo
==========
<class name="OptionalSample" identity-type="application">
<field name="id" primary-key="true"/>
<field name="optionalPC"
field-type="org.apache.jdo.tck.pc.query.OptionalSample"
persistence-modifier="persistent"/>
<field name="optionalDate" persistence-modifier="persistent"/>
<field name="optionalInteger" persistence-modifier="persistent"/>
<field name="optionalString" persistence-modifier="persistent"/>
<field name="optionalAny" persistence-modifier="persistent"
embedded="false"
field-type="org.apache.jdo.tck.pc.query.OptionalSample">
</field>
<field name="optionalNoGenerics" persistence-modifier="persistent"
embedded="false"
field-type="org.apache.jdo.tck.pc.query.OptionalSample">
</field>
<field name="any" persistence-modifier="persistent" embedded="false"
field-type="org.apache.jdo.tck.pc.query.OptionalSample">
</field>
</class>
package-standard.orm:
=====================
<class name="OptionalSample" table="OptionalSample">
<field name="id" column="ID"/>
<field name="optionalPC">
<column name="OPTIONAL_PC"/>
<foreign-key/>
</field>
<field name="optionalDate">
<column name="OPTIONAL_DATE"/>
</field>
<field name="optionalInteger">
<column name="OPTIONAL_INTEGER"/>
</field>
<field name="optionalString">
<column name="OPTIONAL_STRING"/>
</field>
<field name="optionalAny" column="OPTIONAL_ANY">
<foreign-key/>
</field>
<field name="optionalNoGenerics" column="OPTIONAL_NO_GENERICS">
<foreign-key/>
</field>
<field name="any" column="OBJECT_ANY">
<foreign-key/>
</field>
</class>
schema.sql
==========
CREATE TABLE OptionalSample (
ID INTEGER NOT NULL,
OPTIONAL_PC INTEGER REFERENCES SIMPLE_CLASS,
OPTIONAL_DATE DATE,
OPTIONAL_LONG BIGINT,
OPTIONAL_STRING VARCHAR(255),
OPTIONAL_ANY INTEGER REFERENCES SIMPLE_CLASS,
OPTIONAL_NO_GENERICS INTEGER REFERENCES SIMPLE_CLASS,
OBJECT_ANY INTEGER REFERENCES SIMPLE_CLASS,
CONSTRAINT OPTIONALSAMPLE_PK PRIMARY KEY (ID)
);
Full exception:
=============
1)
testParameterOptionalWithEmptyFields(org.apache.jdo.tck.query.jdoql.methods.SupportedOptionalMethods)javax.jdo.JDOFatalInternalException:
Failed to generate new Mapping of type
org.datanucleus.store.rdbms.mapping.java.OptionalMapping, exception : Failed to
generate new Mapping of type
org.datanucleus.store.rdbms.mapping.java.ObjectMapping, exception :
org.datanucleus.store.rdbms.mapping.java.EmbeddedPCMapping cannot be cast to
org.datanucleus.store.rdbms.mapping.java.PersistableMapping
java.lang.ClassCastException:
org.datanucleus.store.rdbms.mapping.java.EmbeddedPCMapping cannot be cast to
org.datanucleus.store.rdbms.mapping.java.PersistableMapping
at
org.datanucleus.store.rdbms.table.ColumnCreator.createColumnsForField(ColumnCreator.java:253)
at
org.datanucleus.store.rdbms.mapping.java.ReferenceMapping.createPerImplementationColumnsForReferenceField(ReferenceMapping.java:487)
at
org.datanucleus.store.rdbms.mapping.java.ReferenceMapping.prepareDatastoreMapping(ReferenceMapping.java:229)
at
org.datanucleus.store.rdbms.mapping.java.ReferenceMapping.initialize(ReferenceMapping.java:104)
at
org.datanucleus.store.rdbms.mapping.RDBMSMappingManager.getMapping(RDBMSMappingManager.java:482)
at
org.datanucleus.store.rdbms.mapping.java.SingleCollectionMapping.initialize(SingleCollectionMapping.java:57)
at
org.datanucleus.store.rdbms.mapping.RDBMSMappingManager.getMapping(RDBMSMappingManager.java:482)
at
org.datanucleus.store.rdbms.table.ClassTable.manageMembers(ClassTable.java:529)
at
org.datanucleus.store.rdbms.table.ClassTable.manageClass(ClassTable.java:435)
at
org.datanucleus.store.rdbms.table.ClassTable.initializeForClass(ClassTable.java:1205)
at
org.datanucleus.store.rdbms.table.ClassTable.initialize(ClassTable.java:275)
at
org.datanucleus.store.rdbms.RDBMSStoreManager$ClassAdder.initializeClassTables(RDBMSStoreManager.java:3298)
at
org.datanucleus.store.rdbms.RDBMSStoreManager$ClassAdder.run(RDBMSStoreManager.java:2907)
at
org.datanucleus.store.rdbms.AbstractSchemaTransaction.execute(AbstractSchemaTransaction.java:118)
at
org.datanucleus.store.rdbms.RDBMSStoreManager.manageClasses(RDBMSStoreManager.java:1644)
at
org.datanucleus.store.rdbms.RDBMSStoreManager.getDatastoreClass(RDBMSStoreManager.java:676)
at
org.datanucleus.store.rdbms.RDBMSPersistenceHandler.getDatastoreClass(RDBMSPersistenceHandler.java:88)
at
org.datanucleus.store.rdbms.RDBMSPersistenceHandler.insertObject(RDBMSPersistenceHandler.java:123)
at
org.datanucleus.state.StateManagerImpl.internalMakePersistent(StateManagerImpl.java:3367)
at
org.datanucleus.state.StateManagerImpl.makePersistent(StateManagerImpl.java:3343)
at
org.datanucleus.ExecutionContextImpl.persistObjectInternal(ExecutionContextImpl.java:2079)
at
org.datanucleus.ExecutionContextImpl.persistObjectWork(ExecutionContextImpl.java:1922)
at
org.datanucleus.ExecutionContextImpl.persistObject(ExecutionContextImpl.java:1777)
at
org.datanucleus.api.jdo.JDOPersistenceManager.jdoMakePersistent(JDOPersistenceManager.java:703)
at
org.datanucleus.api.jdo.JDOPersistenceManager.makePersistent(JDOPersistenceManager.java:729)
at
org.apache.jdo.tck.query.jdoql.methods.SupportedOptionalMethods.insertOptionalSample(SupportedOptionalMethods.java:498)
at
org.apache.jdo.tck.query.jdoql.methods.SupportedOptionalMethods.localSetUp(SupportedOptionalMethods.java:486)
at org.apache.jdo.tck.JDO_Test.setUp(JDO_Test.java:267)
at org.apache.jdo.tck.JDO_Test.runBare(JDO_Test.java:283)
at org.apache.jdo.tck.util.BatchTestRunner.doRun(BatchTestRunner.java:108)
at org.apache.jdo.tck.util.BatchTestRunner.start(BatchTestRunner.java:148)
at org.apache.jdo.tck.util.BatchTestRunner.main(BatchTestRunner.java:123)
Craig L Russell
Architect
craig.russ...@oracle.com
P.S. A good JDO? O, Gasp!
