/*
* Copyright (c) 2007, 2008 XStream Committers.
* All rights reserved.
*
* The software in this package is published under the terms of the BSD
* style license a copy of which has been included with this distribution in
* the LICENSE.txt file.
*
* Created on 20. September 2007 by Joerg Schaible
*/
package com.thoughtworks.xstream.core.util;
import com.thoughtworks.xstream.converters.reflection.ObjectAccessException;
//import java.beans.PropertyEditor;
/**
* Wrapper around {@link PropertyEditor} that can be called by multiple threads concurrently.
* <p>
* A PropertyEditor is not thread safe. To make best use of resources, the PropertyEditor
* provides a dynamically sizing pool of instances, each of which will only be called by a
* single thread at a time.
* </p>
* <p>
* The pool has a maximum capacity, to limit overhead. If all instances in the pool are in use
* and another is required, it shall block until one becomes available.
* </p>
*
* @author Jörg Schaible
* @since 1.3
*/
public class ThreadSafePropertyEditor {
private final Class editorType;
private final Pool pool;
public ThreadSafePropertyEditor(Class type, int initialPoolSize, int maxPoolSize) {
// if (!PropertyEditor.class.isAssignableFrom(type)) {
// throw new IllegalArgumentException(type.getName()
// + " is not a "
// + PropertyEditor.class.getName());
// }
editorType = type;
pool = new Pool(initialPoolSize, maxPoolSize, new Pool.Factory() {
public Object newInstance() {
try {
return editorType.newInstance();
} catch (InstantiationException e) {
throw new ObjectAccessException("Could not call default constructor of "
+ editorType.getName(), e);
} catch (IllegalAccessException e) {
throw new ObjectAccessException("Could not call default constructor of "
+ editorType.getName(), e);
}
}
});
}
public String getAsText(Object object) {
// PropertyEditor editor = fetchFromPool();
// try {
// editor.setValue(object);
// return editor.getAsText();
// } finally {
// pool.putInPool(editor);
// }
return null;
}
public Object setAsText(String str) {
// PropertyEditor editor = fetchFromPool();
// try {
// editor.setAsText(str);
// return editor.getValue();
// } finally {
// pool.putInPool(editor);
// }
return null;
}
// private PropertyEditor fetchFromPool() {
// PropertyEditor editor = (PropertyEditor)pool.fetchFromPool();
// return editor;
// }
}