Package org.apache.openjpa.enhance

Class ManagedClassSubclasser

  • public class ManagedClassSubclasser
extends java.lang.Object
    Redefines the method bodies of existing unenhanced classes to make them notify state managers of mutations.
    Since:
    1.0.0

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static void debugBytecodes​(ClassNodeTracker cnt, byte[] classBytes)  
      static java.util.List<java.lang.Class<?>> prepareUnenhancedClasses​(OpenJPAConfiguration conf, java.util.Collection<? extends java.lang.Class<?>> classes, java.lang.ClassLoader envLoader)
      For each element in classes, creates and registers a new subclass that implements PersistenceCapable, and prepares OpenJPA to handle new instances of the unenhanced type.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • ManagedClassSubclasser

        public ManagedClassSubclasser()

    • Method Detail

      • prepareUnenhancedClasses

        public static java.util.List<java.lang.Class<?>> prepareUnenhancedClasses​(OpenJPAConfiguration conf,
                                                                          java.util.Collection<? extends java.lang.Class<?>> classes,
                                                                          java.lang.ClassLoader envLoader)
        For each element in classes, creates and registers a new subclass that implements PersistenceCapable, and prepares OpenJPA to handle new instances of the unenhanced type. If this is invoked in a Java 6 environment, this method will redefine the methods for each class in the argument list such that field accesses are intercepted in-line. If invoked in a Java 5 environment or very new Java versions, this redefinition is not possible; in these contexts, when using field access, OpenJPA will need to do state comparisons to detect any change to any instance at any time, and when using property access, OpenJPA will need to do state comparisons to detect changes to newly inserted instances after a flush has been called.
        Returns:
        the new subclasses, or null if classes is null.
        Throws:
        UserException - if conf requires build-time enhancement and classes includes unenhanced types.
        Since:
        1.0.0

      • debugBytecodes

        public static void debugBytecodes​(ClassNodeTracker cnt,
                                  byte[] classBytes)
                           throws java.io.IOException
        Throws:
        java.io.IOException