org.eclipse.persistence.mappings.transformers
Class MethodBasedFieldTransformer

java.lang.Object
  org.eclipse.persistence.mappings.transformers.MethodBasedFieldTransformer

All Implemented Interfaces:

java.io.Serializable, FieldTransformer

public class MethodBasedFieldTransformer
extends java.lang.Object
implements FieldTransformer

Version:

$Header: /cvsroot/org.eclipse/www/eclipselink/api/2.0/org/eclipse/persistence/mappings/transformers/MethodBasedFieldTransformer.html,v 1.1 2009/12/07 16:32:08 pkrogh Exp $

See Also:

Serialized Form

Author:

mmacivor

Since:

10 This class is used to preserve the old method of doing Field Transformations on a transformation mapping. It is used internally when the older API is used on a TransformationMapping, and handles doing invocations on the user's domain class

Field Summary

protected java.lang.reflect.Method	fieldTransformationMethod
protected AbstractTransformationMapping	mapping
protected java.lang.String	methodName

Constructor Summary

MethodBasedFieldTransformer(java.lang.String methodName)

Method Summary

java.lang.Object	buildFieldValue(java.lang.Object object, java.lang.String fieldName, Session session)
java.lang.Class	getFieldType() Return the Java class type of the field value.
java.lang.String	getMethodName()
void	initialize(AbstractTransformationMapping mapping) Initialize this transformer.
void	setMethodName(java.lang.String name)

Methods inherited from class java.lang.Object

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

Field Detail

fieldTransformationMethod

protected transient java.lang.reflect.Method fieldTransformationMethod

methodName

protected java.lang.String methodName

mapping

protected AbstractTransformationMapping mapping

Constructor Detail

MethodBasedFieldTransformer

public MethodBasedFieldTransformer(java.lang.String methodName)

Method Detail

initialize

public void initialize(AbstractTransformationMapping mapping)

Description copied from interface: FieldTransformer

Initialize this transformer. Only required if the user needs some special information from the mapping in order to do the transformation

Specified by:

initialize in interface FieldTransformer

Parameters:

mapping - - the mapping this transformer is associated with.

getFieldType

public java.lang.Class getFieldType()

Return the Java class type of the field value. This uses the method return type.

buildFieldValue

public java.lang.Object buildFieldValue(java.lang.Object object,
                                        java.lang.String fieldName,
                                        Session session)

Specified by:

buildFieldValue in interface FieldTransformer

Parameters:

object - - an instance of the domain class which contains the attribute

fieldName - - the name of the field being transformed. Used if the user wants to use this transformer for multiple fields.

session - - the current session

Returns:

- The value to be written for the field associated with this transformer

getMethodName

public java.lang.String getMethodName()

setMethodName

public void setMethodName(java.lang.String name)