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feilong is a suite of core and expanded libraries that include utility classes, http, excel,cvs, io classes, and much much more.
/*
* Copyright (c) 2007, 2008, 2016 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.feilong.lib.xstream.core.util;
import java.beans.PropertyEditor;
import com.feilong.lib.xstream.converters.ConversionException;
import com.feilong.lib.xstream.converters.ErrorWritingException;
import com.feilong.lib.xstream.converters.reflection.ObjectAccessException;
/**
* Wrapper around {@link PropertyEditor} that can be called by multiple threads concurrently.
*
* 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.
*
*
* 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.
*
*
* @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, () -> {
ErrorWritingException ex = null;
try{
return editorType.newInstance();
}catch (InstantiationException e1){
ex = new ConversionException("Faild to call default constructor", e1);
}catch (IllegalAccessException e2){
ex = new ObjectAccessException("Cannot call default constructor", e2);
}
ex.add("construction-type", editorType.getName());
throw ex;
});
}
public String getAsText(Object object){
PropertyEditor editor = fetchFromPool();
try{
editor.setValue(object);
return editor.getAsText();
}finally{
pool.putInPool(editor);
}
}
public Object setAsText(String str){
PropertyEditor editor = fetchFromPool();
try{
editor.setAsText(str);
return editor.getValue();
}finally{
pool.putInPool(editor);
}
}
private PropertyEditor fetchFromPool(){
PropertyEditor editor = (PropertyEditor) pool.fetchFromPool();
return editor;
}
}