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https://issues.apache.org/jira/browse/CAY-2964?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Andrus Adamchik closed CAY-2964.
--------------------------------
Resolution: Fixed
> ClassCastException for non-generated meaningful PKs
> ---------------------------------------------------
>
> Key: CAY-2964
> URL: https://issues.apache.org/jira/browse/CAY-2964
> Project: Cayenne
> Issue Type: Bug
> Reporter: Andrus Adamchik
> Assignee: Andrus Adamchik
> Priority: Major
> Fix For: 5.0-M3
>
>
> Given this mapping (meaningful PK that is not an Integer or a Long) :
> {noformat}
> <db-entity name="MEANINGFUL_PK_BIGINT">
> <db-attribute name="PK" type="INTEGER" isPrimaryKey="true"
> isMandatory="true"/>
> </db-entity>
> ...
> <obj-entity name="MeaningfulPkBigint"
> className="org.apache.cayenne.testdo.meaningful_pk.MeaningfulPkBigint"
> dbEntityName="MEANINGFUL_PK_BIGINT">
> <obj-attribute name="pk" type="java.math.BigInteger"
> db-attribute-path="PK"/>
> </obj-entity>{noformat}
> Committing a new object throws:
> {noformat}
> Caused by: java.lang.ClassCastException: class java.lang.Integer cannot be
> cast to class java.math.BigInteger
> at
> org.apache.cayenne.testdo.meaningful_pk.auto._MeaningfulPkBigint.writePropertyDirectly(_MeaningfulPkBigint.java:65)
> at
> org.apache.cayenne.reflect.generic.PersistentObjectBaseProperty.writePropertyDirectly(PersistentObjectBaseProperty.java:84)
> at
> org.apache.cayenne.access.flush.ReplacementIdVisitor.updateId(ReplacementIdVisitor.java:106)
> at
> org.apache.cayenne.access.flush.ReplacementIdVisitor.visitInsert(ReplacementIdVisitor.java:56)
> at
> org.apache.cayenne.access.flush.ReplacementIdVisitor.visitInsert(ReplacementIdVisitor.java:42)
> at
> org.apache.cayenne.access.flush.operation.InsertDbRowOp.accept(InsertDbRowOp.java:40)
> at
> org.apache.cayenne.access.flush.DefaultDataDomainFlushAction.lambda$createReplacementIds$0(DefaultDataDomainFlushAction.java:211){noformat}
> Root cause: JdbcPkGenerator.generatePk() types the generated value from the
> DB column only (Long for BIGINT, Integer otherwise).
> ReplacementIdVisitor.updateId() then writes it directly into the
> meaningful-PK property without coercion.
> JDBC generated keys are unaffected because BatchAction.typeForGeneratedPK()
> already coerces to the ObjAttribute type.
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