org.datanucleus.enhancer.asm.method
Class JdoCopyKeyFieldsFromObjectId2

java.lang.Object
  extended by org.datanucleus.enhancer.ClassMethod
      extended by org.datanucleus.enhancer.asm.ASMClassMethod
          extended by org.datanucleus.enhancer.asm.method.JdoCopyKeyFieldsFromObjectId2

public class JdoCopyKeyFieldsFromObjectId2
extends ASMClassMethod

Method to generate the method "jdoCopyKeyFieldsFromObjectId" using ASM. For datastore/nondurable identity

 protected void jdoCopyKeyFieldsFromObjectId(Object object)
 {
 }
 
and for SingleFieldIdentity
 protected void jdoCopyKeyFieldsFromObjectId(Object oid)
 {
     if (!(oid instanceof YYYIdentity))
         throw new ClassCastException("key class is not javax.jdo.identity.YYYIdentity or null");
     YYYIdentity o = (YYYIdentity) oid;
     id = o.getKey();
 }
 
and for user-supplied app identity
 protected void jdoCopyKeyFieldsFromObjectId(Object oid)
 {
     if (!(oid instanceof UserPrimaryKey))
         throw new ClassCastException("key class is not mydomain.UserPrimarKey or null");
     UserPrimaryKey o = (UserPrimaryKey) oid;
     try
     {
         zzz1 = o.zzz1;
         zzz2 = o.zzz2;
     }
     catch(Exception e) {}
 }
 
and for CompoundIdentity
 protected void jdoCopyKeyFieldsFromObjectId(Object oid)
 {
     if (!(oid instanceof UserPrimaryKey))
         throw new ClassCastException("key class is not mydomain.UserPrimarKey or null");
     UserPrimaryKey o = (UserPrimaryKey) oid;
     try
     {
         zzz1 = o.zzz1;
         zzz2 = (ZZZ) this.jdoGetPersistenceManager().getObjectById(o.zzz, false);
     }
     catch (Exception e) {}
 }
 
(the try-catch is for cases where we set the fields with reflection and it can throw an exception). There are some differences for fields .v. properties and also if fields in the PK are private.

Version:
$Revision: 1.21 $

Field Summary
 
Fields inherited from class org.datanucleus.enhancer.asm.ASMClassMethod
visitor
 
Fields inherited from class org.datanucleus.enhancer.ClassMethod
access, argNames, argTypes, enhancer, exceptions, LOCALISER, methodName, returnType
 
Constructor Summary
JdoCopyKeyFieldsFromObjectId2(ClassEnhancer enhancer, java.lang.String name, int access, java.lang.Object returnType, java.lang.Object[] argTypes, java.lang.String[] argNames)
          Constructor.
 
Method Summary
 void execute()
          Method to add the contents of the class method.
static JdoCopyKeyFieldsFromObjectId2 getInstance(ASMClassEnhancer enhancer)
           
 
Methods inherited from class org.datanucleus.enhancer.asm.ASMClassMethod
getClassEnhancer, getDescriptor, initialise, initialise
 
Methods inherited from class org.datanucleus.enhancer.ClassMethod
close, equals, getAccess, getMethodAdditionMessage, getName, hashCode
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

JdoCopyKeyFieldsFromObjectId2

public JdoCopyKeyFieldsFromObjectId2(ClassEnhancer enhancer,
                                     java.lang.String name,
                                     int access,
                                     java.lang.Object returnType,
                                     java.lang.Object[] argTypes,
                                     java.lang.String[] argNames)
Constructor.

Parameters:
enhancer - ClassEnhancer
name - Name of method
access - Access type
returnType - Return type
argTypes - Argument types
argNames - Argument names
Method Detail

getInstance

public static JdoCopyKeyFieldsFromObjectId2 getInstance(ASMClassEnhancer enhancer)

execute

public void execute()
Method to add the contents of the class method.

Specified by:
execute in class ClassMethod


Copyright © 2011. All Rights Reserved.