Removed ^M's from file because they were causing line numbers to be
reported incorrectly when trying to track down failing test cases. git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/collections/trunk@130637 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Michael Smith
parent
ae71f5d386
commit
fa43060230
|
|
@ -1,486 +1,486 @@
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/*
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* $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//collections/src/java/org/apache/commons/collections/BeanMap.java,v 1.4 2002/02/22 07:00:30 mas Exp $
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* $Revision: 1.4 $
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* $Date: 2002/02/22 07:00:30 $
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*
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* ====================================================================
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*
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* The Apache Software License, Version 1.1
|
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*
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* Copyright (c) 1999-2002 The Apache Software Foundation. All rights
|
||||
* reserved.
|
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*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
*
|
||||
* 3. The end-user documentation included with the redistribution, if
|
||||
* any, must include the following acknowlegement:
|
||||
* "This product includes software developed by the
|
||||
* Apache Software Foundation (http://www.apache.org/)."
|
||||
* Alternately, this acknowlegement may appear in the software itself,
|
||||
* if and wherever such third-party acknowlegements normally appear.
|
||||
*
|
||||
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
|
||||
* Foundation" must not be used to endorse or promote products derived
|
||||
* from this software without prior written permission. For written
|
||||
* permission, please contact apache@apache.org.
|
||||
*
|
||||
* 5. Products derived from this software may not be called "Apache"
|
||||
* nor may "Apache" appear in their names without prior written
|
||||
* permission of the Apache Group.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
|
||||
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
|
||||
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
||||
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
||||
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
||||
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
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||||
* ====================================================================
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||||
*
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* This software consists of voluntary contributions made by many
|
||||
* individuals on behalf of the Apache Software Foundation. For more
|
||||
* information on the Apache Software Foundation, please see
|
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* <http://www.apache.org/>.
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*
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*/
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package org.apache.commons.collections;
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import java.beans.BeanInfo;
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import java.beans.Introspector;
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import java.beans.IntrospectionException;
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import java.beans.PropertyDescriptor;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.util.AbstractMap;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.Map;
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import java.util.Set;
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/** An implementation of Map for JavaBeans which uses introspection to
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* get and put properties in the bean.
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*
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* If an exception occurs during attempts to get or set a property then the
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* property is considered non existent in the Map
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*
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* @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
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*/
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public class BeanMap extends AbstractMap {
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private Object bean;
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private HashMap readMethods = new HashMap();
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private HashMap writeMethods = new HashMap();
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private HashMap types = new HashMap();
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public static final Object[] NULL_ARGUMENTS = {};
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public static HashMap defaultTransformers = new HashMap();
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static {
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defaultTransformers.put(
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Boolean.TYPE,
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new Transformer() {
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public Object transform( Object input ) {
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return Boolean.valueOf( input.toString() );
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}
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}
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);
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defaultTransformers.put(
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Character.TYPE,
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new Transformer() {
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public Object transform( Object input ) {
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return new Character( input.toString().charAt( 0 ) );
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}
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}
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);
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defaultTransformers.put(
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Byte.TYPE,
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new Transformer() {
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public Object transform( Object input ) {
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return Byte.valueOf( input.toString() );
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}
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}
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);
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defaultTransformers.put(
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Short.TYPE,
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new Transformer() {
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public Object transform( Object input ) {
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return Short.valueOf( input.toString() );
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}
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}
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);
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defaultTransformers.put(
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Integer.TYPE,
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new Transformer() {
|
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public Object transform( Object input ) {
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return Integer.valueOf( input.toString() );
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}
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}
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);
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defaultTransformers.put(
|
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Long.TYPE,
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new Transformer() {
|
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public Object transform( Object input ) {
|
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return Long.valueOf( input.toString() );
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}
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||||
}
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);
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defaultTransformers.put(
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Float.TYPE,
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new Transformer() {
|
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public Object transform( Object input ) {
|
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return Float.valueOf( input.toString() );
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}
|
||||
}
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);
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defaultTransformers.put(
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Double.TYPE,
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new Transformer() {
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public Object transform( Object input ) {
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return Double.valueOf( input.toString() );
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}
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}
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);
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}
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// Constructors
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//-------------------------------------------------------------------------
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public BeanMap() {
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}
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public BeanMap(Object bean) {
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this.bean = bean;
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initialise();
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}
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// Map interface
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//-------------------------------------------------------------------------
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public Object clone() {
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Class beanClass = null;
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try {
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beanClass = bean.getClass();
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Object newBean = beanClass.newInstance();
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Map newMap = new BeanMap( newBean );
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newMap.putAll( this );
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return newMap;
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}
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catch (Exception e) {
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throw new UnsupportedOperationException( "Could not create new instance of class: " + beanClass );
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}
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}
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/**
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* This method reinitializes the bean map to have default values for the
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* bean's properties. This is accomplished by constructing a new instance
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* of the bean which th emap uses as its underlying data source. This
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* behavior for <code>clear()</code> differs from the Map contract in that
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* the mappings are not actually removed from the map (the mappings for a
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* BeanMap are fixed).
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**/
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public void clear() {
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Class beanClass = null;
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try {
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beanClass = bean.getClass();
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bean = beanClass.newInstance();
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}
|
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catch (Exception e) {
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throw new UnsupportedOperationException( "Could not create new instance of class: " + beanClass );
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}
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}
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public boolean containsKey(Object name) {
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Method method = getReadMethod( name );
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return method != null;
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}
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public boolean containsValue(Object value) {
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// use default implementation
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return super.containsValue( value );
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}
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public Object get(Object name) {
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if ( bean != null ) {
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Method method = getReadMethod( name );
|
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if ( method != null ) {
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try {
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return method.invoke( bean, NULL_ARGUMENTS );
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}
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catch ( IllegalAccessException e ) {
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logWarn( e );
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}
|
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catch ( IllegalArgumentException e ) {
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logWarn( e );
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}
|
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catch ( InvocationTargetException e ) {
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logWarn( e );
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}
|
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catch ( NullPointerException e ) {
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logWarn( e );
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}
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}
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}
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return null;
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}
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public Object put(Object name, Object value) throws IllegalArgumentException, ClassCastException {
|
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if ( bean != null ) {
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Object oldValue = get( name );
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Method method = getWriteMethod( name );
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if ( method == null ) {
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throw new IllegalArgumentException( "The bean of type: "+ bean.getClass().getName() + " has no property called: " + name );
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}
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try {
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Object[] arguments = createWriteMethodArguments( method, value );
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method.invoke( bean, arguments );
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Object newValue = get( name );
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firePropertyChange( name, oldValue, newValue );
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}
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catch ( InvocationTargetException e ) {
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logInfo( e );
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throw new IllegalArgumentException( e.getMessage() );
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}
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catch ( IllegalAccessException e ) {
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logInfo( e );
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throw new IllegalArgumentException( e.getMessage() );
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}
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return oldValue;
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}
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return null;
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}
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public int size() {
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return readMethods.size();
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}
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public Set keySet() {
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return readMethods.keySet();
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}
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public Set entrySet() {
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return readMethods.keySet();
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}
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public Collection values() {
|
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ArrayList answer = new ArrayList( readMethods.size() );
|
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for ( Iterator iter = valueIterator(); iter.hasNext(); ) {
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answer.add( iter.next() );
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}
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return answer;
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}
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// Helper methods
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//-------------------------------------------------------------------------
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public Class getType(String name) {
|
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return (Class) types.get( name );
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}
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public Iterator keyIterator() {
|
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return readMethods.keySet().iterator();
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}
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public Iterator valueIterator() {
|
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final Iterator iter = keyIterator();
|
||||
return new Iterator() {
|
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public boolean hasNext() {
|
||||
return iter.hasNext();
|
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}
|
||||
public Object next() {
|
||||
Object key = iter.next();
|
||||
return get( (String) key );
|
||||
}
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public void remove() {
|
||||
throw new UnsupportedOperationException( "remove() not supported for BeanMap" );
|
||||
}
|
||||
};
|
||||
}
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public Iterator entryIterator() {
|
||||
final Iterator iter = keyIterator();
|
||||
return new Iterator() {
|
||||
public boolean hasNext() {
|
||||
return iter.hasNext();
|
||||
}
|
||||
public Object next() {
|
||||
Object key = iter.next();
|
||||
Object value = get( (String) key );
|
||||
return new MyMapEntry( BeanMap.this, key, value );
|
||||
}
|
||||
public void remove() {
|
||||
throw new UnsupportedOperationException( "remove() not supported for BeanMap" );
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
|
||||
// Properties
|
||||
//-------------------------------------------------------------------------
|
||||
public Object getBean() {
|
||||
return bean;
|
||||
}
|
||||
|
||||
public void setBean( Object newBean ) {
|
||||
bean = newBean;
|
||||
reinitialise();
|
||||
}
|
||||
|
||||
|
||||
// Implementation methods
|
||||
//-------------------------------------------------------------------------
|
||||
|
||||
protected Method getReadMethod( Object name ) {
|
||||
return (Method) readMethods.get( name );
|
||||
}
|
||||
|
||||
protected Method getWriteMethod( Object name ) {
|
||||
return (Method) writeMethods.get( name );
|
||||
}
|
||||
|
||||
protected void reinitialise() {
|
||||
readMethods.clear();
|
||||
writeMethods.clear();
|
||||
types.clear();
|
||||
initialise();
|
||||
}
|
||||
|
||||
private void initialise() {
|
||||
Class beanClass = getBean().getClass();
|
||||
try {
|
||||
//BeanInfo beanInfo = Introspector.getBeanInfo( bean, null );
|
||||
BeanInfo beanInfo = Introspector.getBeanInfo( beanClass );
|
||||
PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();
|
||||
if ( propertyDescriptors != null ) {
|
||||
for ( int i = 0; i < propertyDescriptors.length; i++ ) {
|
||||
PropertyDescriptor propertyDescriptor = propertyDescriptors[i];
|
||||
if ( propertyDescriptor != null ) {
|
||||
String name = propertyDescriptor.getName();
|
||||
Method readMethod = propertyDescriptor.getReadMethod();
|
||||
Method writeMethod = propertyDescriptor.getWriteMethod();
|
||||
Class aType = propertyDescriptor.getPropertyType();
|
||||
|
||||
if ( readMethod != null ) {
|
||||
readMethods.put( name, readMethod );
|
||||
}
|
||||
if ( writeMethods != null ) {
|
||||
writeMethods.put( name, writeMethod );
|
||||
}
|
||||
types.put( name, aType );
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
catch ( IntrospectionException e ) {
|
||||
logWarn( e );
|
||||
}
|
||||
}
|
||||
|
||||
protected void firePropertyChange( Object key, Object oldValue, Object newValue ) {
|
||||
}
|
||||
|
||||
// Implementation classes
|
||||
//-------------------------------------------------------------------------
|
||||
protected static class MyMapEntry extends DefaultMapEntry {
|
||||
private BeanMap owner;
|
||||
|
||||
protected MyMapEntry( BeanMap owner, Object key, Object value ) {
|
||||
super( key, value );
|
||||
this.owner = owner;
|
||||
}
|
||||
|
||||
public Object setValue(Object value) {
|
||||
Object key = getKey();
|
||||
Object oldValue = owner.get( key );
|
||||
|
||||
owner.put( key, value );
|
||||
Object newValue = owner.get( key );
|
||||
super.setValue( newValue );
|
||||
return oldValue;
|
||||
}
|
||||
}
|
||||
|
||||
protected Object[] createWriteMethodArguments( Method method, Object value ) throws IllegalAccessException, ClassCastException {
|
||||
try {
|
||||
if ( value != null ) {
|
||||
Class[] types = method.getParameterTypes();
|
||||
if ( types != null && types.length > 0 ) {
|
||||
Class paramType = types[0];
|
||||
if ( ! paramType.isAssignableFrom( value.getClass() ) ) {
|
||||
value = convertType( paramType, value );
|
||||
}
|
||||
}
|
||||
}
|
||||
Object[] answer = { value };
|
||||
return answer;
|
||||
}
|
||||
catch ( InvocationTargetException e ) {
|
||||
logInfo( e );
|
||||
throw new IllegalArgumentException( e.getMessage() );
|
||||
}
|
||||
catch ( InstantiationException e ) {
|
||||
logInfo( e );
|
||||
throw new IllegalArgumentException( e.getMessage() );
|
||||
}
|
||||
}
|
||||
|
||||
protected Object convertType( Class newType, Object value )
|
||||
throws InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
|
||||
|
||||
// try call constructor
|
||||
Class[] types = { value.getClass() };
|
||||
try {
|
||||
Constructor constructor = newType.getConstructor( types );
|
||||
Object[] arguments = { value };
|
||||
return constructor.newInstance( arguments );
|
||||
}
|
||||
catch ( NoSuchMethodException e ) {
|
||||
// try using the transformers
|
||||
Transformer transformer = getTypeTransformer( newType );
|
||||
if ( transformer != null ) {
|
||||
return transformer.transform( value );
|
||||
}
|
||||
return value;
|
||||
}
|
||||
}
|
||||
|
||||
protected Transformer getTypeTransformer( Class aType ) {
|
||||
return (Transformer) defaultTransformers.get( aType );
|
||||
}
|
||||
|
||||
protected void logInfo(Exception e) {
|
||||
// XXXX: should probably use log4j here instead...
|
||||
System.out.println( "INFO: Exception: " + e );
|
||||
}
|
||||
|
||||
protected void logWarn(Exception e) {
|
||||
// XXXX: should probably use log4j here instead...
|
||||
System.out.println( "WARN: Exception: " + e );
|
||||
e.printStackTrace();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//collections/src/java/org/apache/commons/collections/BeanMap.java,v 1.5 2002/03/13 04:15:49 mas Exp $
|
||||
* $Revision: 1.5 $
|
||||
* $Date: 2002/03/13 04:15:49 $
|
||||
*
|
||||
* ====================================================================
|
||||
*
|
||||
* The Apache Software License, Version 1.1
|
||||
*
|
||||
* Copyright (c) 1999-2002 The Apache Software Foundation. All rights
|
||||
* reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
*
|
||||
* 3. The end-user documentation included with the redistribution, if
|
||||
* any, must include the following acknowlegement:
|
||||
* "This product includes software developed by the
|
||||
* Apache Software Foundation (http://www.apache.org/)."
|
||||
* Alternately, this acknowlegement may appear in the software itself,
|
||||
* if and wherever such third-party acknowlegements normally appear.
|
||||
*
|
||||
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
|
||||
* Foundation" must not be used to endorse or promote products derived
|
||||
* from this software without prior written permission. For written
|
||||
* permission, please contact apache@apache.org.
|
||||
*
|
||||
* 5. Products derived from this software may not be called "Apache"
|
||||
* nor may "Apache" appear in their names without prior written
|
||||
* permission of the Apache Group.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
|
||||
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
|
||||
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
||||
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
||||
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
||||
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
* ====================================================================
|
||||
*
|
||||
* This software consists of voluntary contributions made by many
|
||||
* individuals on behalf of the Apache Software Foundation. For more
|
||||
* information on the Apache Software Foundation, please see
|
||||
* <http://www.apache.org/>.
|
||||
*
|
||||
*/
|
||||
package org.apache.commons.collections;
|
||||
|
||||
import java.beans.BeanInfo;
|
||||
import java.beans.Introspector;
|
||||
import java.beans.IntrospectionException;
|
||||
import java.beans.PropertyDescriptor;
|
||||
import java.lang.reflect.Constructor;
|
||||
import java.lang.reflect.InvocationTargetException;
|
||||
import java.lang.reflect.Method;
|
||||
import java.util.AbstractMap;
|
||||
import java.util.ArrayList;
|
||||
import java.util.Collection;
|
||||
import java.util.HashMap;
|
||||
import java.util.Iterator;
|
||||
import java.util.Map;
|
||||
import java.util.Set;
|
||||
|
||||
|
||||
/** An implementation of Map for JavaBeans which uses introspection to
|
||||
* get and put properties in the bean.
|
||||
*
|
||||
* If an exception occurs during attempts to get or set a property then the
|
||||
* property is considered non existent in the Map
|
||||
*
|
||||
* @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
|
||||
*/
|
||||
|
||||
public class BeanMap extends AbstractMap {
|
||||
|
||||
private Object bean;
|
||||
|
||||
private HashMap readMethods = new HashMap();
|
||||
private HashMap writeMethods = new HashMap();
|
||||
private HashMap types = new HashMap();
|
||||
|
||||
public static final Object[] NULL_ARGUMENTS = {};
|
||||
public static HashMap defaultTransformers = new HashMap();
|
||||
|
||||
static {
|
||||
defaultTransformers.put(
|
||||
Boolean.TYPE,
|
||||
new Transformer() {
|
||||
public Object transform( Object input ) {
|
||||
return Boolean.valueOf( input.toString() );
|
||||
}
|
||||
}
|
||||
);
|
||||
defaultTransformers.put(
|
||||
Character.TYPE,
|
||||
new Transformer() {
|
||||
public Object transform( Object input ) {
|
||||
return new Character( input.toString().charAt( 0 ) );
|
||||
}
|
||||
}
|
||||
);
|
||||
defaultTransformers.put(
|
||||
Byte.TYPE,
|
||||
new Transformer() {
|
||||
public Object transform( Object input ) {
|
||||
return Byte.valueOf( input.toString() );
|
||||
}
|
||||
}
|
||||
);
|
||||
defaultTransformers.put(
|
||||
Short.TYPE,
|
||||
new Transformer() {
|
||||
public Object transform( Object input ) {
|
||||
return Short.valueOf( input.toString() );
|
||||
}
|
||||
}
|
||||
);
|
||||
defaultTransformers.put(
|
||||
Integer.TYPE,
|
||||
new Transformer() {
|
||||
public Object transform( Object input ) {
|
||||
return Integer.valueOf( input.toString() );
|
||||
}
|
||||
}
|
||||
);
|
||||
defaultTransformers.put(
|
||||
Long.TYPE,
|
||||
new Transformer() {
|
||||
public Object transform( Object input ) {
|
||||
return Long.valueOf( input.toString() );
|
||||
}
|
||||
}
|
||||
);
|
||||
defaultTransformers.put(
|
||||
Float.TYPE,
|
||||
new Transformer() {
|
||||
public Object transform( Object input ) {
|
||||
return Float.valueOf( input.toString() );
|
||||
}
|
||||
}
|
||||
);
|
||||
defaultTransformers.put(
|
||||
Double.TYPE,
|
||||
new Transformer() {
|
||||
public Object transform( Object input ) {
|
||||
return Double.valueOf( input.toString() );
|
||||
}
|
||||
}
|
||||
);
|
||||
}
|
||||
|
||||
|
||||
// Constructors
|
||||
//-------------------------------------------------------------------------
|
||||
public BeanMap() {
|
||||
}
|
||||
|
||||
public BeanMap(Object bean) {
|
||||
this.bean = bean;
|
||||
initialise();
|
||||
}
|
||||
|
||||
// Map interface
|
||||
//-------------------------------------------------------------------------
|
||||
|
||||
public Object clone() {
|
||||
Class beanClass = null;
|
||||
try {
|
||||
beanClass = bean.getClass();
|
||||
Object newBean = beanClass.newInstance();
|
||||
Map newMap = new BeanMap( newBean );
|
||||
newMap.putAll( this );
|
||||
return newMap;
|
||||
}
|
||||
catch (Exception e) {
|
||||
throw new UnsupportedOperationException( "Could not create new instance of class: " + beanClass );
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* This method reinitializes the bean map to have default values for the
|
||||
* bean's properties. This is accomplished by constructing a new instance
|
||||
* of the bean which th emap uses as its underlying data source. This
|
||||
* behavior for <code>clear()</code> differs from the Map contract in that
|
||||
* the mappings are not actually removed from the map (the mappings for a
|
||||
* BeanMap are fixed).
|
||||
**/
|
||||
public void clear() {
|
||||
Class beanClass = null;
|
||||
try {
|
||||
beanClass = bean.getClass();
|
||||
bean = beanClass.newInstance();
|
||||
}
|
||||
catch (Exception e) {
|
||||
throw new UnsupportedOperationException( "Could not create new instance of class: " + beanClass );
|
||||
}
|
||||
}
|
||||
|
||||
public boolean containsKey(Object name) {
|
||||
Method method = getReadMethod( name );
|
||||
return method != null;
|
||||
}
|
||||
|
||||
public boolean containsValue(Object value) {
|
||||
// use default implementation
|
||||
return super.containsValue( value );
|
||||
}
|
||||
|
||||
public Object get(Object name) {
|
||||
if ( bean != null ) {
|
||||
Method method = getReadMethod( name );
|
||||
if ( method != null ) {
|
||||
try {
|
||||
return method.invoke( bean, NULL_ARGUMENTS );
|
||||
}
|
||||
catch ( IllegalAccessException e ) {
|
||||
logWarn( e );
|
||||
}
|
||||
catch ( IllegalArgumentException e ) {
|
||||
logWarn( e );
|
||||
}
|
||||
catch ( InvocationTargetException e ) {
|
||||
logWarn( e );
|
||||
}
|
||||
catch ( NullPointerException e ) {
|
||||
logWarn( e );
|
||||
}
|
||||
}
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
public Object put(Object name, Object value) throws IllegalArgumentException, ClassCastException {
|
||||
if ( bean != null ) {
|
||||
Object oldValue = get( name );
|
||||
Method method = getWriteMethod( name );
|
||||
if ( method == null ) {
|
||||
throw new IllegalArgumentException( "The bean of type: "+ bean.getClass().getName() + " has no property called: " + name );
|
||||
}
|
||||
try {
|
||||
Object[] arguments = createWriteMethodArguments( method, value );
|
||||
method.invoke( bean, arguments );
|
||||
|
||||
Object newValue = get( name );
|
||||
firePropertyChange( name, oldValue, newValue );
|
||||
}
|
||||
catch ( InvocationTargetException e ) {
|
||||
logInfo( e );
|
||||
throw new IllegalArgumentException( e.getMessage() );
|
||||
}
|
||||
catch ( IllegalAccessException e ) {
|
||||
logInfo( e );
|
||||
throw new IllegalArgumentException( e.getMessage() );
|
||||
}
|
||||
return oldValue;
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
public int size() {
|
||||
return readMethods.size();
|
||||
}
|
||||
|
||||
|
||||
public Set keySet() {
|
||||
return readMethods.keySet();
|
||||
}
|
||||
|
||||
public Set entrySet() {
|
||||
return readMethods.keySet();
|
||||
}
|
||||
|
||||
public Collection values() {
|
||||
ArrayList answer = new ArrayList( readMethods.size() );
|
||||
for ( Iterator iter = valueIterator(); iter.hasNext(); ) {
|
||||
answer.add( iter.next() );
|
||||
}
|
||||
return answer;
|
||||
}
|
||||
|
||||
|
||||
// Helper methods
|
||||
//-------------------------------------------------------------------------
|
||||
|
||||
public Class getType(String name) {
|
||||
return (Class) types.get( name );
|
||||
}
|
||||
|
||||
public Iterator keyIterator() {
|
||||
return readMethods.keySet().iterator();
|
||||
}
|
||||
|
||||
public Iterator valueIterator() {
|
||||
final Iterator iter = keyIterator();
|
||||
return new Iterator() {
|
||||
public boolean hasNext() {
|
||||
return iter.hasNext();
|
||||
}
|
||||
public Object next() {
|
||||
Object key = iter.next();
|
||||
return get( (String) key );
|
||||
}
|
||||
public void remove() {
|
||||
throw new UnsupportedOperationException( "remove() not supported for BeanMap" );
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
public Iterator entryIterator() {
|
||||
final Iterator iter = keyIterator();
|
||||
return new Iterator() {
|
||||
public boolean hasNext() {
|
||||
return iter.hasNext();
|
||||
}
|
||||
public Object next() {
|
||||
Object key = iter.next();
|
||||
Object value = get( (String) key );
|
||||
return new MyMapEntry( BeanMap.this, key, value );
|
||||
}
|
||||
public void remove() {
|
||||
throw new UnsupportedOperationException( "remove() not supported for BeanMap" );
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
|
||||
// Properties
|
||||
//-------------------------------------------------------------------------
|
||||
public Object getBean() {
|
||||
return bean;
|
||||
}
|
||||
|
||||
public void setBean( Object newBean ) {
|
||||
bean = newBean;
|
||||
reinitialise();
|
||||
}
|
||||
|
||||
|
||||
// Implementation methods
|
||||
//-------------------------------------------------------------------------
|
||||
|
||||
protected Method getReadMethod( Object name ) {
|
||||
return (Method) readMethods.get( name );
|
||||
}
|
||||
|
||||
protected Method getWriteMethod( Object name ) {
|
||||
return (Method) writeMethods.get( name );
|
||||
}
|
||||
|
||||
protected void reinitialise() {
|
||||
readMethods.clear();
|
||||
writeMethods.clear();
|
||||
types.clear();
|
||||
initialise();
|
||||
}
|
||||
|
||||
private void initialise() {
|
||||
Class beanClass = getBean().getClass();
|
||||
try {
|
||||
//BeanInfo beanInfo = Introspector.getBeanInfo( bean, null );
|
||||
BeanInfo beanInfo = Introspector.getBeanInfo( beanClass );
|
||||
PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();
|
||||
if ( propertyDescriptors != null ) {
|
||||
for ( int i = 0; i < propertyDescriptors.length; i++ ) {
|
||||
PropertyDescriptor propertyDescriptor = propertyDescriptors[i];
|
||||
if ( propertyDescriptor != null ) {
|
||||
String name = propertyDescriptor.getName();
|
||||
Method readMethod = propertyDescriptor.getReadMethod();
|
||||
Method writeMethod = propertyDescriptor.getWriteMethod();
|
||||
Class aType = propertyDescriptor.getPropertyType();
|
||||
|
||||
if ( readMethod != null ) {
|
||||
readMethods.put( name, readMethod );
|
||||
}
|
||||
if ( writeMethods != null ) {
|
||||
writeMethods.put( name, writeMethod );
|
||||
}
|
||||
types.put( name, aType );
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
catch ( IntrospectionException e ) {
|
||||
logWarn( e );
|
||||
}
|
||||
}
|
||||
|
||||
protected void firePropertyChange( Object key, Object oldValue, Object newValue ) {
|
||||
}
|
||||
|
||||
// Implementation classes
|
||||
//-------------------------------------------------------------------------
|
||||
protected static class MyMapEntry extends DefaultMapEntry {
|
||||
private BeanMap owner;
|
||||
|
||||
protected MyMapEntry( BeanMap owner, Object key, Object value ) {
|
||||
super( key, value );
|
||||
this.owner = owner;
|
||||
}
|
||||
|
||||
public Object setValue(Object value) {
|
||||
Object key = getKey();
|
||||
Object oldValue = owner.get( key );
|
||||
|
||||
owner.put( key, value );
|
||||
Object newValue = owner.get( key );
|
||||
super.setValue( newValue );
|
||||
return oldValue;
|
||||
}
|
||||
}
|
||||
|
||||
protected Object[] createWriteMethodArguments( Method method, Object value ) throws IllegalAccessException, ClassCastException {
|
||||
try {
|
||||
if ( value != null ) {
|
||||
Class[] types = method.getParameterTypes();
|
||||
if ( types != null && types.length > 0 ) {
|
||||
Class paramType = types[0];
|
||||
if ( ! paramType.isAssignableFrom( value.getClass() ) ) {
|
||||
value = convertType( paramType, value );
|
||||
}
|
||||
}
|
||||
}
|
||||
Object[] answer = { value };
|
||||
return answer;
|
||||
}
|
||||
catch ( InvocationTargetException e ) {
|
||||
logInfo( e );
|
||||
throw new IllegalArgumentException( e.getMessage() );
|
||||
}
|
||||
catch ( InstantiationException e ) {
|
||||
logInfo( e );
|
||||
throw new IllegalArgumentException( e.getMessage() );
|
||||
}
|
||||
}
|
||||
|
||||
protected Object convertType( Class newType, Object value )
|
||||
throws InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
|
||||
|
||||
// try call constructor
|
||||
Class[] types = { value.getClass() };
|
||||
try {
|
||||
Constructor constructor = newType.getConstructor( types );
|
||||
Object[] arguments = { value };
|
||||
return constructor.newInstance( arguments );
|
||||
}
|
||||
catch ( NoSuchMethodException e ) {
|
||||
// try using the transformers
|
||||
Transformer transformer = getTypeTransformer( newType );
|
||||
if ( transformer != null ) {
|
||||
return transformer.transform( value );
|
||||
}
|
||||
return value;
|
||||
}
|
||||
}
|
||||
|
||||
protected Transformer getTypeTransformer( Class aType ) {
|
||||
return (Transformer) defaultTransformers.get( aType );
|
||||
}
|
||||
|
||||
protected void logInfo(Exception e) {
|
||||
// XXXX: should probably use log4j here instead...
|
||||
System.out.println( "INFO: Exception: " + e );
|
||||
}
|
||||
|
||||
protected void logWarn(Exception e) {
|
||||
// XXXX: should probably use log4j here instead...
|
||||
System.out.println( "WARN: Exception: " + e );
|
||||
e.printStackTrace();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue