org.apache.commons.beanutils.DynaBeanMapDecorator Maven / Gradle / Ivy
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* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.commons.beanutils;
/**
* Decorates a {@link DynaBean} to provide Map
behaviour.
*
* The motivation for this implementation is to provide access to {@link DynaBean}
* properties in technologies that are unaware of BeanUtils and {@link DynaBean}s -
* such as the expression languages of JSTL and JSF.
*
* This can be achieved either by wrapping the {@link DynaBean} prior to
* providing it to the technolody to process or by providing a Map
* accessor method on the DynaBean implementation:
*
* public Map getMap() {
* return new DynaBeanMapDecorator(this);
* }
*
*
*
* This, for example, could be used in JSTL in the following way to access
* a DynaBean's fooProperty
:
*
${myDynaBean.map.fooProperty}
*
*
* Usage
*
* To decorate a {@link DynaBean} simply instantiate this class with the
* target {@link DynaBean}:
*
* Map fooMap = new DynaBeanMapDecorator(fooDynaBean);
*
* The above example creates a read only Map
.
* To create a Map
which can be modified, construct a
* DynaBeanMapDecorator
with the read only
* attribute set to false
:
*
* Map fooMap = new DynaBeanMapDecorator(fooDynaBean, false);
*
* Limitations
* In this implementation the entrySet()
, keySet()
* and values()
methods create an unmodifiable
* Set
and it does not support the Map's clear()
* and remove()
operations.
* For reasons of backwards compatibility, the generic types of this
* {@code Map} implementation are {@code
*
* @since BeanUtils 1.8.0
* @version $Id: DynaBeanMapDecorator.java 1540186 2013-11-08 21:08:30Z oheger $
* @deprecated Use {@link DynaBeanPropertyMapDecorator} instead. When adding
* generics it turned out that it was not possible to use the correct type
* parameters without breaking backwards compatibility. Therefore, class
* {@code DynaBeanPropertyMapDecorator} was introduced as a replacement.
*/
@Deprecated
public class DynaBeanMapDecorator extends BaseDynaBeanMapDecorator