Package org.apache.openjpa.enhance

Class PCSubclassValidator

java.lang.Object

org.apache.openjpa.enhance.PCSubclassValidator

public class PCSubclassValidator
extends Object

Validates that a given type meets the JPA contract, plus a few OpenJPA-specific additions for subclassing / redefinition:

• must have an accessible no-args constructor
• must be a public or protected class
• must not be final
• must not extend an enhanced class
• all persistent data represented by accessible setter/getter methods (persistent properties)
• if versioning is to be used, exactly one persistent property for the numeric version data
• When using property access, the backing field for a persistent property must be:
  • private
  • set only in the designated setter, in the constructor, or in Object.clone(), readObject(ObjectInputStream), or Externalizable.readExternal(ObjectInput).
  • read only in the designated getter and the constructor.

If you use this technique and use the new keyword instead of a OpenJPA-supplied construction routine, OpenJPA will need to do extra work with persistent-new-flushed instances, since OpenJPA cannot in this case track what happens to such an instance.

Since:

1.0.0

Constructor Summary

Constructors

Constructor	Description
PCSubclassValidator(ClassMetaData meta, org.apache.xbean.asm9.tree.ClassNode classNode, Log log, boolean enforceContractViolations)

Method Summary

Modifier and Type	Method	Description
void	assertCanSubclass()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

PCSubclassValidator

public PCSubclassValidator(ClassMetaData meta,
 org.apache.xbean.asm9.tree.ClassNode classNode,
 Log log,
 boolean enforceContractViolations)

Method Details

assertCanSubclass

public void assertCanSubclass()