/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.config.types;
import com.caucho.config.type.*;
import java.util.*;
import java.lang.reflect.*;
import java.lang.annotation.*;
/**
* Configuration for the xml web bean component.
*/
public class AnnotationConfig implements InvocationHandler {
private static final Method EQUALS;
private static final Method HASH_CODE;
private static final Method TO_STRING;
private static final Method ANNOTATION_TYPE;
private AnnotationInterfaceType _configType;
private Class<?> _annotationType;
private HashMap<String,Object> _valueMap = new HashMap<String,Object>(8);
public AnnotationConfig(Class<?> annotationType)
{
this((AnnotationInterfaceType) TypeFactory.getType(annotationType),
annotationType);
}
public AnnotationConfig(AnnotationInterfaceType configType,
Class<?> annotationType)
{
_configType = configType;
_annotationType = annotationType;
}
public ConfigType<?> getConfigType()
{
return _configType;
}
public void setAttribute(String name, Object value)
{
if ("#text".equals(name))
name = "value";
Object oldValue = _valueMap.get(name);
if (oldValue != null
&& oldValue.getClass().isArray()
&& value != null
&& oldValue.getClass() == value.getClass()) {
Object []oldArray = (Object []) oldValue;
Object []valueArray = (Object []) value;
Class<?> componentType = oldValue.getClass().getComponentType();
value = Array.newInstance(componentType,
oldArray.length + valueArray.length);
System.arraycopy(oldArray, 0, value, 0, oldArray.length);
System.arraycopy(valueArray, 0,
value, oldArray.length, valueArray.length);
}
_valueMap.put(name, value);
}
@Override
public Object invoke(Object proxy, Method method, Object []args)
{
if (ANNOTATION_TYPE.equals(method)) {
return _annotationType;
}
else if (TO_STRING.equals(method)) {
return _configType.toString(_valueMap);
}
else if (EQUALS.equals(method)) {
return equalsImpl(args[0]);
}
else if (HASH_CODE.equals(method)) {
// XXX:
return _annotationType.hashCode();
}
if (args == null || args.length == 0) {
Object value = _valueMap.get(method.getName());
if (value != null)
return value;
if (Annotation.class.isAssignableFrom(method.getDeclaringClass()))
return method.getDefaultValue();
}
throw new IllegalArgumentException("AnnotationProxy: " + method.toString());
}
private boolean equalsImpl(Object o)
{
if (o == null)
return false;
else if (! _annotationType.equals(o.getClass())) {
return false;
}
// XXX:
return true;
}
public Annotation replace()
{
// ioc/0h20
ClassLoader loader = _annotationType.getClassLoader();
// Thread.currentThread().getContextClassLoader();
return (Annotation) Proxy.newProxyInstance(loader,
new Class[] { _annotationType },
this);
}
@Override
public String toString()
{
return getClass().getSimpleName() + "[" + _annotationType + "]";
}
static {
Method equals = null;
Method hashCode = null;
Method toString = null;
Method annotationType = null;
try {
equals = Object.class.getMethod("equals", new Class[] { Object.class });
hashCode = Object.class.getMethod("hashCode", new Class[] {});
toString = Object.class.getMethod("toString", new Class[] {});
annotationType
= Annotation.class.getMethod("annotationType", new Class[] {});
} catch (Throwable e) {
throw new RuntimeException(e);
}
EQUALS = equals;
HASH_CODE = hashCode;
TO_STRING = toString;
ANNOTATION_TYPE = annotationType;
}
}