MethodBasedFieldTransformer (EclipseLink 2.6.0, API Reference)

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

All Implemented Interfaces:

java.io.Serializable, CoreFieldTransformer<Session>, FieldTransformer
```
public class MethodBasedFieldTransformer
extends java.lang.Object
implements FieldTransformer
```
Version:

$Header: MethodBasedFieldTransformer.java 18-sep-2006.16:20:59 gyorke 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

Fields
Modifier and Type	Field and Description
`protected java.lang.reflect.Method`	`fieldTransformationMethod`
`protected AbstractTransformationMapping`	`mapping`
`protected java.lang.String`	`methodName`

Fields inherited from interface org.eclipse.persistence.core.mappings.transformers.CoreFieldTransformer
BUILD_FIELD_VALUE_METHOD

Constructor Summary

Constructors
Constructor and Description

MethodBasedFieldTransformer(java.lang.String methodName)

Constructors
Constructor and Description
`MethodBasedFieldTransformer(java.lang.String methodName)`

Method Summary

Methods
Modifier and Type	Method and Description
`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 CoreFieldTransformer<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)
```

Class MethodBasedFieldTransformer

Field Summary

Fields inherited from interface org.eclipse.persistence.core.mappings.transformers.CoreFieldTransformer

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

fieldTransformationMethod

methodName

mapping

Constructor Detail

MethodBasedFieldTransformer

Method Detail

initialize

getFieldType

buildFieldValue

getMethodName

setMethodName