Class CopyKeyFieldsToObjectId

java.lang.Object

org.datanucleus.enhancer.ClassMethod

org.datanucleus.enhancer.methods.CopyKeyFieldsToObjectId

public class CopyKeyFieldsToObjectId
extends ClassMethod

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

public void dnCopyKeyFieldsToObjectId(Object oid)
{
}

and for SingleFieldIdentity

public void dnCopyKeyFieldsToObjectId(Object oid)
{
    throw new JDOFatalInternalException("It's illegal to call ...");
}

and for user-supplied app identity

public void dnCopyKeyFieldsToObjectId(Object oid)
{
    if (!(oid instanceof UserPrimaryKey))
        throw new ClassCastException("key class is not mydomain.UserPrimaryKey or null");
    UserPrimaryKey o = (UserPrimaryKey) oid;
    o.zzz1 = zzz1;
    o.zzz2 = zzz2;
}

and for Compound Identity

public void dnCopyKeyFieldsToObjectId(Object oid)
{
    if (!(oid instanceof UserPrimaryKey))
        throw new ClassCastException("key class is not mydomain.UserPrimaryKey or null");
    UserPrimaryKey o = (UserPrimaryKey) oid;
    o.zzz1 = zzz1;
    o.zzz2 = (ZZZ2.Key) JDOHelper.getObjectId(zzz2);
}

Version:

$Revision: 1.16 $

Field Summary

Fields inherited from class ClassMethod

access, argNames, argTypes, enhancer, exceptions, methodName, returnType, visitor

Constructor Summary

Constructors

Constructor	Description
CopyKeyFieldsToObjectId(ClassEnhancer enhancer, String name, int access, Object returnType, Object[] argTypes, String[] argNames)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	execute()	Method to add the contents of the class method.
static CopyKeyFieldsToObjectId	getInstance(ClassEnhancer enhancer)

Methods inherited from class ClassMethod

close, equals, getAccess, getClassEnhancer, getDescriptor, getMethodAdditionMessage, getName, getNamer, hashCode, initialise, initialise

Methods inherited from class Object

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

Constructor Details

CopyKeyFieldsToObjectId

public CopyKeyFieldsToObjectId(ClassEnhancer enhancer,
 String name,
 int access,
 Object returnType,
 Object[] argTypes,
 String[] argNames)

Constructor.

Parameters:

enhancer - ClassEnhancer

name - Name of method

access - Access type

returnType - Return type

argTypes - Argument types

argNames - Argument names

Method Details

getInstance

public static CopyKeyFieldsToObjectId getInstance(ClassEnhancer enhancer)

execute

public void execute()

Method to add the contents of the class method.

Specified by:

execute in class ClassMethod