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Re: [eclipselink-users] Virtual Metlhods | questions
|
Hi Chris,
It's the requirement of my product - Dynamic Fields can be configured
at the runtime and should be picked up in live application with zero
down time. Its for the dynamic fields I am creating the mappings.
How to accomplish above reqirement?
~Gaurav
On 24-07-2012 11:29 PM, Christopher Delahunt wrote:
This would occur if the mapping has not been initialized;
initialization occurs during session login. Earlier posts showed
mappings being added through a session customizer which get called
prior to login. How and when is this mapping added?
Calling refreshMetadata as Tom mentions creates a new session from the
metadata, and would call customizers on it before logging in. If your
customizer picks up the new mapping changes, then that might explain
why it works for you, since they get initialized with the new session
login.
It is not a good idea to make mapping/descriptor changes to active
sessions after login has occurred.
On 24/07/2012 5:05 PM, gaurav malhotra wrote:
ava.lang.NullPointerException
at
org.eclipse.persistence.mappings.ForeignReferenceMapping.valueFromRowInternal(ForeignReferenceMapping.java:2019)
at
org.eclipse.persistence.mappings.ForeignReferenceMapping.valueFromRow(ForeignReferenceMapping.java:1987)
at
org.eclipse.persistence.mappings.ForeignReferenceMapping.buildCloneFromRow(ForeignReferenceMapping.java:276)
at
org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildAttributesIntoWorkingCopyClone(ObjectBuilder.java:1548)
at
org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildWorkingCopyCloneFromRow(ObjectBuilder.java:1694)
at
org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObjectInUnitOfWork(ObjectBuilder.java:664)
at
org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:601)
at
org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:560)
at
org.eclipse.persistence.queries.ObjectLevelReadQuery.buildObject(ObjectLevelReadQuery.java:717)
at
org.eclipse.persistence.queries.ReadAllQuery.registerResultInUnitOfWork(ReadAllQuery.java:769)
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