Package org.datanucleus.enhancer.methods

Class CopyFields

java.lang.Object

org.datanucleus.enhancer.ClassMethod

org.datanucleus.enhancer.methods.CopyFields

public class CopyFields
extends ClassMethod

Method to generate the method "dnCopyFields" using ASM.

 public void dnCopyFields(Object obj, int[] fieldNumbers)
 {
     if (dnStateManager == null)
         throw new IllegalStateException("state manager is null");
     if (fieldNumbers == null)
         throw new IllegalStateException("fieldNumbers is null");
     if (!(obj instanceof Answer))
         throw new IllegalArgumentException
                   ("object is not an object of type mydomain.MyClass");
     MyClass other = (MyClass) obj;
     if (dnStateManager != other.dnStateManager)
         throw new IllegalArgumentException("state managers do not match");
     int i = fieldNumbers.length - 1;
     if (i ≥ 0) {
         do
             dnCopyField(other, fieldNumbers[i]);
         while (--i ≥ 0);
     }
 }
 

Field Summary

Fields inherited from class org.datanucleus.enhancer.ClassMethod

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

Constructor Summary

Constructors

Constructor	Description
CopyFields(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 CopyFields	getInstance(ClassEnhancer enhancer)

Methods inherited from class org.datanucleus.enhancer.ClassMethod

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

Methods inherited from class java.lang.Object

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

Constructor Detail

CopyFields

public CopyFields(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 Detail

getInstance

public static CopyFields getInstance(ClassEnhancer enhancer)

execute

public void execute()

Method to add the contents of the class method.

Specified by:

execute in class ClassMethod