Class TransientFieldHandler<T>

java.lang.Object

org.exolab.castor.mapping.loader.FieldHandlerFriend<T>

org.exolab.castor.mapping.ExtendedFieldHandler<T>

org.exolab.castor.mapping.AbstractFieldHandler<T>

org.exolab.castor.mapping.handlers.TransientFieldHandler<T>

All Implemented Interfaces:

ConfigurableFieldHandler<T>, FieldHandler<T>

public class TransientFieldHandler<T>
extends AbstractFieldHandler<T>

A dummy FieldHandler for "transient" fields. This allows us to create a FieldDescriptor, but not use a real FieldHandler.

Version:

$Revision: 9062 $ $Date: 2005-01-17 14:35:07 -0700 (Mon, 17 Jan 2005) $

Author:

kvisco

Field Summary

Fields inherited from class AbstractFieldHandler

_properties

Modifier and Type	Field	Description
protected Properties	_properties	Configuration that can be used by subclasses when needed.

Constructor Summary

Constructors

Constructor	Description
TransientFieldHandler()

Method Summary

Modifier and Type	Method	Description
T	getValue(Object target)	Returns the value of the field from the object.
T	newInstance(Object target)	Creates a new instance of the object described by this field.
Object	newInstance(Object target, Object[] args)	Creates a new instance of the object described by this field.
void	resetValue(Object target)	Sets the value of the field to a default value.
void	setValue(Object target, Object value)	Sets the value of the field on the object.

Methods inherited from class AbstractFieldHandler

getFieldDescriptor, hasValue, setConfiguration, setFieldDescriptor

Modifier and Type	Method	Description
protected final FieldDescriptor	getFieldDescriptor()	Returns the FieldDescriptor for the field that this handler is responsible for, or null if no FieldDescriptor has been set.
boolean	hasValue(Object object)	Returns true if the "handled" field has a value within the given object.
void	setConfiguration(Properties config)	Empty implementation of the ConfigurableFieldHandler interface, for convenience purpose.
void	setFieldDescriptor(FieldDescriptor fieldDesc)	Sets the FieldDescriptor that this FieldHander is responsibile for.

Methods inherited from class ExtendedFieldHandler

checkValidity

Modifier and Type	Method	Description
void	checkValidity(Object object)	Deprecated. No longer supported

Methods inherited from class Object

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

Constructor Details

TransientFieldHandler

public TransientFieldHandler()

Method Details

getValue

public T getValue(Object target)

Description copied from interface: FieldHandler

Returns the value of the field from the object.

Parameters:

target - The object

Returns:

The value of the field

newInstance

public T newInstance(Object target)

Description copied from interface: FieldHandler

Creates a new instance of the object described by this field.

Parameters:

target - The object for which the field is created

Returns:

A new instance of the field's value

newInstance

public Object newInstance(Object target,
 Object[] args)

Description copied from class: ExtendedFieldHandler

Creates a new instance of the object described by this field.

Specified by:

newInstance in class ExtendedFieldHandler<T>

Parameters:

target - The object for which the field is created

args - the set of constructor arguments

Returns:

A new instance of the field's value

setValue

public void setValue(Object target,
 Object value)

Description copied from interface: FieldHandler

Sets the value of the field on the object.

Parameters:

target - The object.

value - The new value.

resetValue

public void resetValue(Object target)

Description copied from interface: FieldHandler

Sets the value of the field to a default value.

Reference fields are set to null, primitive fields are set to their default value, collection fields are emptied of all elements.

Parameters:

target - The object.