Jens Leisenberg created OPENJPA-2227:
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Summary: OpenJPA doesn't find custom SequenceGenerators
Key: OPENJPA-2227
URL: https://issues.apache.org/jira/browse/OPENJPA-2227
Project: OpenJPA
Issue Type: Bug
Components: kernel
Affects Versions: 2.2.0, 2.1.0, 2.0.0
Environment: WebSphere Application Server V8.0 and V8.5
Reporter: Jens Leisenberg
Priority: Blocker
Attachments: ClassNotFoundException.txt
I'm trying to use a custom SequenceGenerator within an enterprise application
using openJPA (providing by WebSphere).
When defining a custom Sequence a ClassNotFoundException (for the Sequence
class) will be thrown when trying to insert data into the database.
ExampleConfiguration:
{code}
@Entity
@SequenceGenerator(name="MySequence",
sequenceName="org.apache.openjpa.generator.UIDGenerator()")
public class Customer implements Serializable {
@Id
@GeneratedValue(strategy=GenerationType.SEQUENCE, generator="MySequence")
private long id;
{code}
The example will produce the stacktrace attached.
It seems that the wrong class loader is used to instantiate the custom sequence
class. A very similar issue seems to be: OPENJPA-758. With JavaSE (JUnit) all
is working fine, but after deploying into WAS the Exception will occur.
I think within the method SequenceMetaData.instantiate(Classloader envLoader)
the JavaTypes.classForName() -method with parameter mustExist=false should be
used instead of the pure Class.forName() call. But I'm not sure about the
Metadata-parameter needed for this method call.
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