org.mmbase.datatypes.processors

Class Readonly

java.lang.Object

org.mmbase.datatypes.processors.Readonly

All Implemented Interfaces:

Serializable, Processor

public class Readonly
extends Object
implements Processor

This processor can be used as a 'set' processor on a field. If the field is set an exception is thrown (in other words, the field is read only). In the builder XML you should also add the 'readonly' attribute on the field, to indicate to generic editors that this field should not be presented editable.

Since:

MMBase-1.8

Version:

$Id$

Author:

Nico Klasens

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Readonly()

Method Summary

Modifier and Type	Method and Description
Object	process(Node node, Field field, Object value) You can plug this in on every set-action besides 'object' which will make this field unmodifiable, except for set(Object) itself (which is never used from editors).

Methods inherited from class java.lang.Object

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

Constructor Detail

Readonly

public Readonly()

Method Detail

process

public Object process(Node node,
                      Field field,
                      Object value)

You can plug this in on every set-action besides 'object' which will make this field unmodifiable, except for set(Object) itself (which is never used from editors).

Specified by:

process in interface Processor

Parameters:

node - The node object for which the field must be transformed.

field - The field which is set.

value - The (new) field value.