/*
* 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.reflect;
import com.caucho.config.inject.InjectManager;
import com.caucho.loader.EnvironmentLocal;
import java.lang.ref.SoftReference;
import java.lang.reflect.Type;
import java.util.WeakHashMap;
/**
* Factory for introspecting reflected types.
*/
public class ReflectionAnnotatedFactory
{
private static EnvironmentLocal<ReflectionAnnotatedFactory> _current
= new EnvironmentLocal<ReflectionAnnotatedFactory>();
private WeakHashMap<Type,SoftReference<ReflectionSimpleAnnotatedType<?>>> _simpleTypeMap
= new WeakHashMap<Type,SoftReference<ReflectionSimpleAnnotatedType<?>>>();
private WeakHashMap<Type,SoftReference<ReflectionAnnotatedType<?>>> _typeMap
= new WeakHashMap<Type,SoftReference<ReflectionAnnotatedType<?>>>();
/**
* Returns the factory for the given loader.
*/
private static ReflectionAnnotatedFactory create(ClassLoader loader)
{
synchronized (_current) {
ReflectionAnnotatedFactory factory = _current.get(loader);
if (factory == null) {
factory = new ReflectionAnnotatedFactory();
_current.set(factory, loader);
}
return factory;
}
}
/**
* Introspects a simple reflection type, i.e. a type without
* fields and methods.
*/
public static <T> ReflectionSimpleAnnotatedType<T>
introspectSimpleType(Class<T> cl)
{
return create(cl.getClassLoader()).introspectSimpleTypeImpl(cl);
}
/**
* Introspects the reflection type
*/
synchronized
private <T> ReflectionSimpleAnnotatedType<T>
introspectSimpleTypeImpl(Type type)
{
SoftReference<ReflectionSimpleAnnotatedType<?>> typeRef
= _simpleTypeMap.get(type);
ReflectionSimpleAnnotatedType<T> annType = null;
if (typeRef != null)
annType = (ReflectionSimpleAnnotatedType<T>) typeRef.get();
if (type == null) {
InjectManager inject = InjectManager.create();
BaseType baseType = inject.createSourceBaseType(type);
annType = new ReflectionSimpleAnnotatedType(inject, baseType);
typeRef = new SoftReference<ReflectionSimpleAnnotatedType<?>>(annType);
_simpleTypeMap.put(type, typeRef);
}
return annType;
}
/**
* Introspects a simple reflection type, i.e. a type without
* fields and methods.
*/
public static <X> ReflectionAnnotatedType<X> introspectType(Class<X> cl)
{
return create(cl.getClassLoader()).introspectTypeImpl(cl);
}
/**
* Introspects a simple reflection type, i.e. a type without
* fields and methods.
*/
public static <X> ReflectionAnnotatedType<X> introspectType(BaseType type)
{
ClassLoader loader;
if (type instanceof ClassType)
loader = type.getRawClass().getClassLoader();
else
loader = Thread.currentThread().getContextClassLoader();
return create(loader).introspectTypeImpl(type);
}
/**
* Introspects the reflection type
*/
synchronized
private <X> ReflectionAnnotatedType<X> introspectTypeImpl(Type type)
{
SoftReference<ReflectionAnnotatedType<?>> typeRef
= _typeMap.get(type);
ReflectionAnnotatedType<?> annType = null;
if (typeRef != null)
annType = typeRef.get();
if (annType == null) {
InjectManager inject = InjectManager.create();
BaseType baseType = inject.createSourceBaseType(type);
annType = new ReflectionAnnotatedType<X>(inject, baseType);
typeRef = new SoftReference<ReflectionAnnotatedType<?>>(annType);
_typeMap.put(type, typeRef);
}
return (ReflectionAnnotatedType<X>) annType;
}
/**
* Introspects the reflection type
*/
synchronized
private <X> ReflectionAnnotatedType<X> introspectTypeImpl(BaseType baseType)
{
Type type = baseType.toType();
SoftReference<ReflectionAnnotatedType<?>> typeRef
= _typeMap.get(type);
ReflectionAnnotatedType<?> annType = null;
if (typeRef != null)
annType = typeRef.get();
if (annType == null) {
InjectManager inject = InjectManager.create();
annType = new ReflectionAnnotatedType<X>(inject, baseType);
typeRef = new SoftReference<ReflectionAnnotatedType<?>>(annType);
_typeMap.put(type, typeRef);
}
return (ReflectionAnnotatedType<X>) annType;
}
@Override
public String toString()
{
return getClass().getSimpleName() + "[]";
}
}