dubbo-common/src/main/java/com/alibaba/dubbo/common/bytecode/Wrapper.java - dubbo - Git at Google

 /*
  * Copyright 1999-2011 Alibaba Group.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 package com.alibaba.dubbo.common.bytecode;

 import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.atomic.AtomicLong;
 import java.util.regex.Matcher;

 import com.alibaba.dubbo.common.utils.ClassHelper;
 import com.alibaba.dubbo.common.utils.ReflectUtils;

 /**
  * Wrapper.
  *
  * @author qian.lei
  */

 public abstract class Wrapper
 {
 	private static AtomicLong WRAPPER_CLASS_COUNTER = new AtomicLong(0);

 	private static final Map<Class<?>, Wrapper> WRAPPER_MAP = new ConcurrentHashMap<Class<?>, Wrapper>(); //class wrapper map

 	private static final String[] EMPTY_STRING_ARRAY = new String[0];

 	private static final String[] OBJECT_METHODS = new String[]{"getClass", "hashCode", "toString", "equals"};

 	private static final Wrapper OBJECT_WRAPPER = new Wrapper(){
 		public String[] getMethodNames(){ return OBJECT_METHODS; }
 		public String[] getDeclaredMethodNames(){ return OBJECT_METHODS; }
 		public String[] getPropertyNames(){ return EMPTY_STRING_ARRAY; }
 		public Class<?> getPropertyType(String pn){ return null; }
 		public Object getPropertyValue(Object instance, String pn) throws NoSuchPropertyException{ throw new NoSuchPropertyException("Property [" + pn + "] not found."); }
 		public void setPropertyValue(Object instance, String pn, Object pv) throws NoSuchPropertyException{ throw new NoSuchPropertyException("Property [" + pn + "] not found."); }
 		public boolean hasProperty(String name){ return false; }
 		public Object invokeMethod(Object instance, String mn, Class<?>[] types, Object[] args) throws NoSuchMethodException
 		{
 			if( "getClass".equals(mn) ) return instance.getClass();
 			if( "hashCode".equals(mn) ) return instance.hashCode();
 			if( "toString".equals(mn) ) return instance.toString();
 			if( "equals".equals(mn) )
 			{
 				if( args.length == 1 ) return instance.equals(args[0]);
 				throw new IllegalArgumentException("Invoke method [" + mn + "] argument number error.");
 			}
 			throw new NoSuchMethodException("Method [" + mn + "] not found.");
 		}
 	};

 	/**
 	 * get wrapper.
 	 *
 	 * @param c Class instance.
 	 * @return Wrapper instance(not null).
 	 */
 	public static Wrapper getWrapper(Class<?> c)
     {
         while( ClassGenerator.isDynamicClass(c) ) // can not wrapper on dynamic class.
             c = c.getSuperclass();

         if( c == Object.class )
             return OBJECT_WRAPPER;

         Wrapper ret = WRAPPER_MAP.get(c);
         if( ret == null )
         {
             ret = makeWrapper(c);
             WRAPPER_MAP.put(c,ret);
         }
         return ret;
     }
 	/**
 	 * get property name array.
 	 *
 	 * @return property name array.
 	 */
 	abstract public String[] getPropertyNames();

 	/**
 	 * get property type.
 	 *
 	 * @param pn property name.
 	 * @return Property type or nul.
 	 */
 	abstract public Class<?> getPropertyType(String pn);

 	/**
 	 * has property.
 	 *
 	 * @param name property name.
 	 * @return has or has not.
 	 */
 	abstract public boolean hasProperty(String name);

 	/**
 	 * get property value.
 	 *
 	 * @param instance instance.
 	 * @param pn property name.
 	 * @return value.
 	 */
 	abstract public Object getPropertyValue(Object instance, String pn) throws NoSuchPropertyException, IllegalArgumentException;

 	/**
 	 * set property value.
 	 *
 	 * @param instance instance.
 	 * @param pn property name.
 	 * @param pv property value.
 	 */
 	abstract public void setPropertyValue(Object instance, String pn, Object pv) throws NoSuchPropertyException, IllegalArgumentException;

 	/**
 	 * get property value.
 	 *
 	 * @param instance instance.
 	 * @param pns property name array.
 	 * @return value array.
 	 */
 	public Object[] getPropertyValues(Object instance, String[] pns) throws NoSuchPropertyException, IllegalArgumentException
 	{
 		Object[] ret = new Object[pns.length];
 		for(int i=0;i<ret.length;i++)
 			ret[i] = getPropertyValue(instance, pns[i]);
 		return ret;
 	}

 	/**
 	 * set property value.
 	 *
 	 * @param instance instance.
 	 * @param pns property name array.
 	 * @param pvs property value array.
 	 */
 	public void setPropertyValues(Object instance, String[] pns, Object[] pvs) throws NoSuchPropertyException, IllegalArgumentException
 	{
 		if( pns.length != pvs.length )
 			throw new IllegalArgumentException("pns.length != pvs.length");

 		for(int i=0;i<pns.length;i++)
 			setPropertyValue(instance, pns[i], pvs[i]);
 	}

 	/**
 	 * get method name array.
 	 *
 	 * @return method name array.
 	 */
 	abstract public String[] getMethodNames();

 	/**
 	 * get method name array.
 	 *
 	 * @return method name array.
 	 */
 	abstract public String[] getDeclaredMethodNames();

 	/**
 	 * has method.
 	 *
 	 * @param name method name.
 	 * @return has or has not.
 	 */
 	public boolean hasMethod(String name)
 	{
 		for( String mn : getMethodNames() )
 			if( mn.equals(name) ) return true;
 		return false;
 	}

 	/**
 	 * invoke method.
 	 *
 	 * @param instance instance.
 	 * @param mn method name.
 	 * @param types
 	 * @param args argument array.
 	 * @return return value.
 	 */
 	abstract public Object invokeMethod(Object instance, String mn, Class<?>[] types, Object[] args) throws NoSuchMethodException, InvocationTargetException;

 	private static Wrapper makeWrapper(Class<?> c)
 	{
 		if( c.isPrimitive() )
 			throw new IllegalArgumentException("Can not create wrapper for primitive type: " + c);

 		String name = c.getName();
 		ClassLoader cl = ClassHelper.getClassLoader(c);

 		StringBuilder c1 = new StringBuilder("public void setPropertyValue(Object o, String n, Object v){ ");
 		StringBuilder c2 = new StringBuilder("public Object getPropertyValue(Object o, String n){ ");
 		StringBuilder c3 = new StringBuilder("public Object invokeMethod(Object o, String n, Class[] p, Object[] v) throws " + InvocationTargetException.class.getName() + "{ ");

 		c1.append(name).append(" w; try{ w = ((").append(name).append(")$1); }catch(Throwable e){ throw new IllegalArgumentException(e); }");
 		c2.append(name).append(" w; try{ w = ((").append(name).append(")$1); }catch(Throwable e){ throw new IllegalArgumentException(e); }");
 		c3.append(name).append(" w; try{ w = ((").append(name).append(")$1); }catch(Throwable e){ throw new IllegalArgumentException(e); } try{");

 		Map<String, Class<?>> pts = new HashMap<String, Class<?>>(); // <property name, property types>
 		Map<String, Method> ms = new LinkedHashMap<String, Method>(); // <method desc, Method instance>
 		List<String> mns = new ArrayList<String>(); // method names.
 		List<String> dmns = new ArrayList<String>(); // declaring method names.

 		// get all public field.
 		for( Field f : c.getFields() )
 		{
 			String fn = f.getName();
 			Class<?> ft = f.getType();
 			if( Modifier.isStatic(f.getModifiers()) || Modifier.isTransient(f.getModifiers()) )
 				continue;

 			c1.append(" if( $2.equals(\"").append(fn).append("\") ){ w.").append(fn).append("=").append(arg(ft, "$3")).append("; return; }");
 			c2.append(" if( $2.equals(\"").append(fn).append("\") ){ return ($w)w.").append(fn).append("; }");
 			pts.put(fn, ft);
 		}

 		Method[] methods = c.getMethods();
 		// get all public method.
 		for( Method m : methods )
 		{
 			if( m.getDeclaringClass() == Object.class ) //ignore Object's method.
 				continue;

 			String mn = m.getName();
 			c3.append(" if( \"").append(mn).append("\".equals( $2 ) ");
             int len = m.getParameterTypes().length;
             c3.append(" && ").append(" $3.length == ").append(len);

 			boolean override = false;
 			for( Method m2 : methods ) {
 				if (m != m2 && m.getName().equals(m2.getName())) {
 					override = true;
 					break;
 				}
 			}
 			if (override) {
 				if (len > 0) {
 					for (int l = 0; l < len; l ++) {
 						c3.append(" && ").append(" $3[").append(l).append("].getName().equals(\"")
 							.append(m.getParameterTypes()[l].getName()).append("\")");
 					}
 				}
 			}

 			c3.append(" ) { ");

 			if( m.getReturnType() == Void.TYPE )
 				c3.append(" w.").append(mn).append('(').append(args(m.getParameterTypes(), "$4")).append(");").append(" return null;");
 			else
 				c3.append(" return ($w)w.").append(mn).append('(').append(args(m.getParameterTypes(), "$4")).append(");");

 			c3.append(" }");

 			mns.add(mn);
 			if( m.getDeclaringClass() == c )
 				dmns.add(mn);
 			ms.put(ReflectUtils.getDesc(m), m);
 		}
 		c3.append(" } catch(Throwable e) { " );
 		c3.append("     throw new java.lang.reflect.InvocationTargetException(e); " );
 		c3.append(" }");
 		c3.append(" throw new " + NoSuchMethodException.class.getName() + "(\"Not found method \\\"\"+$2+\"\\\" in class " + c.getName() + ".\"); }");

 		// deal with get/set method.
 		Matcher matcher;
 		for( Map.Entry<String,Method> entry : ms.entrySet() )
 		{
 			String md = entry.getKey();
 			Method method = (Method)entry.getValue();
 			if( ( matcher = ReflectUtils.GETTER_METHOD_DESC_PATTERN.matcher(md) ).matches() )
 			{
 				String pn = propertyName(matcher.group(1));
 				c2.append(" if( $2.equals(\"").append(pn).append("\") ){ return ($w)w.").append(method.getName()).append("(); }");
 				pts.put(pn, method.getReturnType());
 			}
 			else if( ( matcher = ReflectUtils.IS_HAS_CAN_METHOD_DESC_PATTERN.matcher(md) ).matches() )
 			{
 				String pn = propertyName(matcher.group(1));
 				c2.append(" if( $2.equals(\"").append(pn).append("\") ){ return ($w)w.").append(method.getName()).append("(); }");
 				pts.put(pn, method.getReturnType());
 			}
 			else if( ( matcher = ReflectUtils.SETTER_METHOD_DESC_PATTERN.matcher(md) ).matches() )
 			{
 				Class<?> pt = method.getParameterTypes()[0];
 				String pn = propertyName(matcher.group(1));
 				c1.append(" if( $2.equals(\"").append(pn).append("\") ){ w.").append(method.getName()).append("(").append(arg(pt,"$3")).append("); return; }");
 				pts.put(pn, pt);
 			}
 		}
 		c1.append(" throw new " + NoSuchPropertyException.class.getName() + "(\"Not found property \\\"\"+$2+\"\\\" filed or setter method in class " + c.getName() + ".\"); }");
 		c2.append(" throw new " + NoSuchPropertyException.class.getName() + "(\"Not found property \\\"\"+$2+\"\\\" filed or setter method in class " + c.getName() + ".\"); }");

 		// make class
 		long id = WRAPPER_CLASS_COUNTER.getAndIncrement();
 		ClassGenerator cc = ClassGenerator.newInstance(cl);
 		cc.setClassName( ( Modifier.isPublic(c.getModifiers()) ? Wrapper.class.getName() : c.getName() + "$sw" ) + id );
 		cc.setSuperClass(Wrapper.class);

 		cc.addDefaultConstructor();
 		cc.addField("public static String[] pns;"); // property name array.
 		cc.addField("public static " + Map.class.getName() + " pts;"); // property type map.
 		cc.addField("public static String[] mns;"); // all method name array.
 		cc.addField("public static String[] dmns;"); // declared method name array.
 		for(int i=0,len=ms.size();i<len;i++)
 			cc.addField("public static Class[] mts" + i + ";");

 		cc.addMethod("public String[] getPropertyNames(){ return pns; }");
 		cc.addMethod("public boolean hasProperty(String n){ return pts.containsKey($1); }");
 		cc.addMethod("public Class getPropertyType(String n){ return (Class)pts.get($1); }");
 		cc.addMethod("public String[] getMethodNames(){ return mns; }");
 		cc.addMethod("public String[] getDeclaredMethodNames(){ return dmns; }");
 		cc.addMethod(c1.toString());
 		cc.addMethod(c2.toString());
 		cc.addMethod(c3.toString());

 		try
 		{
 			Class<?> wc = cc.toClass();
 			// setup static field.
 			wc.getField("pts").set(null, pts);
 			wc.getField("pns").set(null, pts.keySet().toArray(new String[0]));
 			wc.getField("mns").set(null, mns.toArray(new String[0]));
 			wc.getField("dmns").set(null, dmns.toArray(new String[0]));
 			int ix = 0;
 			for( Method m : ms.values() )
 				wc.getField("mts" + ix++).set(null, m.getParameterTypes());
 			return (Wrapper)wc.newInstance();
 		}
 		catch(RuntimeException e)
 		{
 			throw e;
 		}
 		catch(Throwable e)
 		{
 			throw new RuntimeException(e.getMessage(), e);
 		}
 		finally
 		{
 			cc.release();
 			ms.clear();
 			mns.clear();
 			dmns.clear();
 		}
 	}

 	private static String arg(Class<?> cl, String name)
 	{
 		if( cl.isPrimitive() )
 		{
 			if( cl == Boolean.TYPE )
 				return "((Boolean)" + name + ").booleanValue()";
 			if( cl == Byte.TYPE )
 				return "((Byte)" + name + ").byteValue()";
 			if( cl == Character.TYPE )
 				return "((Character)" + name + ").charValue()";
 			if( cl == Double.TYPE )
 				return "((Number)" + name + ").doubleValue()";
 			if( cl == Float.TYPE )
 				return "((Number)" + name + ").floatValue()";
 			if( cl == Integer.TYPE )
 				return "((Number)" + name + ").intValue()";
 			if( cl == Long.TYPE )
 				return "((Number)" + name + ").longValue()";
 			if( cl == Short.TYPE )
 				return "((Number)" + name + ").shortValue()";
 			throw new RuntimeException("Unknown primitive type: " + cl.getName());
 		}
 		return "(" + ReflectUtils.getName(cl) + ")" + name;
 	}

 	private static String args(Class<?>[] cs,String name)
 	{
 		int len = cs.length;
 		if( len == 0 ) return "";
 		StringBuilder sb = new StringBuilder();
 		for(int i=0;i<len;i++)
 		{
 			if( i > 0 )
 				sb.append(',');
 			sb.append(arg(cs[i],name+"["+i+"]"));
 		}
 		return sb.toString();
 	}

 	private static String propertyName(String pn)
 	{
 		return pn.length() == 1 || Character.isLowerCase(pn.charAt(1)) ? Character.toLowerCase(pn.charAt(0)) + pn.substring(1) : pn;
 	}
 }
	/*
	* Copyright 1999-2011 Alibaba Group.
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/
	package com.alibaba.dubbo.common.bytecode;

	import java.lang.reflect.Field;
	import java.lang.reflect.InvocationTargetException;
	import java.lang.reflect.Method;
	import java.lang.reflect.Modifier;
	import java.util.ArrayList;
	import java.util.HashMap;
	import java.util.LinkedHashMap;
	import java.util.List;
	import java.util.Map;
	import java.util.concurrent.ConcurrentHashMap;
	import java.util.concurrent.atomic.AtomicLong;
	import java.util.regex.Matcher;

	import com.alibaba.dubbo.common.utils.ClassHelper;
	import com.alibaba.dubbo.common.utils.ReflectUtils;

	/**
	* Wrapper.
	*
	* @author qian.lei
	*/

	public abstract class Wrapper
	{
	private static AtomicLong WRAPPER_CLASS_COUNTER = new AtomicLong(0);

	private static final Map<Class<?>, Wrapper> WRAPPER_MAP = new ConcurrentHashMap<Class<?>, Wrapper>(); //class wrapper map

	private static final String[] EMPTY_STRING_ARRAY = new String[0];

	private static final String[] OBJECT_METHODS = new String[]{"getClass", "hashCode", "toString", "equals"};

	private static final Wrapper OBJECT_WRAPPER = new Wrapper(){
	public String[] getMethodNames(){ return OBJECT_METHODS; }
	public String[] getDeclaredMethodNames(){ return OBJECT_METHODS; }
	public String[] getPropertyNames(){ return EMPTY_STRING_ARRAY; }
	public Class<?> getPropertyType(String pn){ return null; }
	public Object getPropertyValue(Object instance, String pn) throws NoSuchPropertyException{ throw new NoSuchPropertyException("Property [" + pn + "] not found."); }
	public void setPropertyValue(Object instance, String pn, Object pv) throws NoSuchPropertyException{ throw new NoSuchPropertyException("Property [" + pn + "] not found."); }
	public boolean hasProperty(String name){ return false; }
	public Object invokeMethod(Object instance, String mn, Class<?>[] types, Object[] args) throws NoSuchMethodException
	{
	if( "getClass".equals(mn) ) return instance.getClass();
	if( "hashCode".equals(mn) ) return instance.hashCode();
	if( "toString".equals(mn) ) return instance.toString();
	if( "equals".equals(mn) )
	{
	if( args.length == 1 ) return instance.equals(args[0]);
	throw new IllegalArgumentException("Invoke method [" + mn + "] argument number error.");
	}
	throw new NoSuchMethodException("Method [" + mn + "] not found.");
	}
	};

	/**
	* get wrapper.
	*
	* @param c Class instance.
	* @return Wrapper instance(not null).
	*/
	public static Wrapper getWrapper(Class<?> c)
	{
	while( ClassGenerator.isDynamicClass(c) ) // can not wrapper on dynamic class.
	c = c.getSuperclass();

	if( c == Object.class )
	return OBJECT_WRAPPER;

	Wrapper ret = WRAPPER_MAP.get(c);
	if( ret == null )
	{
	ret = makeWrapper(c);
	WRAPPER_MAP.put(c,ret);
	}
	return ret;
	}
	/**
	* get property name array.
	*
	* @return property name array.
	*/
	abstract public String[] getPropertyNames();

	/**
	* get property type.
	*
	* @param pn property name.
	* @return Property type or nul.
	*/
	abstract public Class<?> getPropertyType(String pn);

	/**
	* has property.
	*
	* @param name property name.
	* @return has or has not.
	*/
	abstract public boolean hasProperty(String name);

	/**
	* get property value.
	*
	* @param instance instance.
	* @param pn property name.
	* @return value.
	*/
	abstract public Object getPropertyValue(Object instance, String pn) throws NoSuchPropertyException, IllegalArgumentException;

	/**
	* set property value.
	*
	* @param instance instance.
	* @param pn property name.
	* @param pv property value.
	*/
	abstract public void setPropertyValue(Object instance, String pn, Object pv) throws NoSuchPropertyException, IllegalArgumentException;

	/**
	* get property value.
	*
	* @param instance instance.
	* @param pns property name array.
	* @return value array.
	*/
	public Object[] getPropertyValues(Object instance, String[] pns) throws NoSuchPropertyException, IllegalArgumentException
	{
	Object[] ret = new Object[pns.length];
	for(int i=0;i<ret.length;i++)
	ret[i] = getPropertyValue(instance, pns[i]);
	return ret;
	}

	/**
	* set property value.
	*
	* @param instance instance.
	* @param pns property name array.
	* @param pvs property value array.
	*/
	public void setPropertyValues(Object instance, String[] pns, Object[] pvs) throws NoSuchPropertyException, IllegalArgumentException
	{
	if( pns.length != pvs.length )
	throw new IllegalArgumentException("pns.length != pvs.length");

	for(int i=0;i<pns.length;i++)
	setPropertyValue(instance, pns[i], pvs[i]);
	}

	/**
	* get method name array.
	*
	* @return method name array.
	*/
	abstract public String[] getMethodNames();

	/**
	* get method name array.
	*
	* @return method name array.
	*/
	abstract public String[] getDeclaredMethodNames();

	/**
	* has method.
	*
	* @param name method name.
	* @return has or has not.
	*/
	public boolean hasMethod(String name)
	{
	for( String mn : getMethodNames() )
	if( mn.equals(name) ) return true;
	return false;
	}

	/**
	* invoke method.
	*
	* @param instance instance.
	* @param mn method name.
	* @param types
	* @param args argument array.
	* @return return value.
	*/
	abstract public Object invokeMethod(Object instance, String mn, Class<?>[] types, Object[] args) throws NoSuchMethodException, InvocationTargetException;

	private static Wrapper makeWrapper(Class<?> c)
	{
	if( c.isPrimitive() )
	throw new IllegalArgumentException("Can not create wrapper for primitive type: " + c);

	String name = c.getName();
	ClassLoader cl = ClassHelper.getClassLoader(c);

	StringBuilder c1 = new StringBuilder("public void setPropertyValue(Object o, String n, Object v){ ");
	StringBuilder c2 = new StringBuilder("public Object getPropertyValue(Object o, String n){ ");
	StringBuilder c3 = new StringBuilder("public Object invokeMethod(Object o, String n, Class[] p, Object[] v) throws " + InvocationTargetException.class.getName() + "{ ");

	c1.append(name).append(" w; try{ w = ((").append(name).append(")$1); }catch(Throwable e){ throw new IllegalArgumentException(e); }");
	c2.append(name).append(" w; try{ w = ((").append(name).append(")$1); }catch(Throwable e){ throw new IllegalArgumentException(e); }");
	c3.append(name).append(" w; try{ w = ((").append(name).append(")$1); }catch(Throwable e){ throw new IllegalArgumentException(e); } try{");

	Map<String, Class<?>> pts = new HashMap<String, Class<?>>(); // <property name, property types>
	Map<String, Method> ms = new LinkedHashMap<String, Method>(); // <method desc, Method instance>
	List<String> mns = new ArrayList<String>(); // method names.
	List<String> dmns = new ArrayList<String>(); // declaring method names.

	// get all public field.
	for( Field f : c.getFields() )
	{
	String fn = f.getName();
	Class<?> ft = f.getType();
	if( Modifier.isStatic(f.getModifiers()) \|\| Modifier.isTransient(f.getModifiers()) )
	continue;

	c1.append(" if( $2.equals(\"").append(fn).append("\") ){ w.").append(fn).append("=").append(arg(ft, "$3")).append("; return; }");
	c2.append(" if( $2.equals(\"").append(fn).append("\") ){ return ($w)w.").append(fn).append("; }");
	pts.put(fn, ft);
	}

	Method[] methods = c.getMethods();
	// get all public method.
	for( Method m : methods )
	{
	if( m.getDeclaringClass() == Object.class ) //ignore Object's method.
	continue;

	String mn = m.getName();
	c3.append(" if( \"").append(mn).append("\".equals( $2 ) ");
	int len = m.getParameterTypes().length;
	c3.append(" && ").append(" $3.length == ").append(len);

	boolean override = false;
	for( Method m2 : methods ) {
	if (m != m2 && m.getName().equals(m2.getName())) {
	override = true;
	break;
	}
	}
	if (override) {
	if (len > 0) {
	for (int l = 0; l < len; l ++) {
	c3.append(" && ").append(" $3[").append(l).append("].getName().equals(\"")
	.append(m.getParameterTypes()[l].getName()).append("\")");
	}
	}
	}

	c3.append(" ) { ");

	if( m.getReturnType() == Void.TYPE )
	c3.append(" w.").append(mn).append('(').append(args(m.getParameterTypes(), "$4")).append(");").append(" return null;");
	else
	c3.append(" return ($w)w.").append(mn).append('(').append(args(m.getParameterTypes(), "$4")).append(");");

	c3.append(" }");

	mns.add(mn);
	if( m.getDeclaringClass() == c )
	dmns.add(mn);
	ms.put(ReflectUtils.getDesc(m), m);
	}
	c3.append(" } catch(Throwable e) { " );
	c3.append(" throw new java.lang.reflect.InvocationTargetException(e); " );
	c3.append(" }");
	c3.append(" throw new " + NoSuchMethodException.class.getName() + "(\"Not found method \\\"\"+$2+\"\\\" in class " + c.getName() + ".\"); }");

	// deal with get/set method.
	Matcher matcher;
	for( Map.Entry<String,Method> entry : ms.entrySet() )
	{
	String md = entry.getKey();
	Method method = (Method)entry.getValue();
	if( ( matcher = ReflectUtils.GETTER_METHOD_DESC_PATTERN.matcher(md) ).matches() )
	{
	String pn = propertyName(matcher.group(1));
	c2.append(" if( $2.equals(\"").append(pn).append("\") ){ return ($w)w.").append(method.getName()).append("(); }");
	pts.put(pn, method.getReturnType());
	}
	else if( ( matcher = ReflectUtils.IS_HAS_CAN_METHOD_DESC_PATTERN.matcher(md) ).matches() )
	{
	String pn = propertyName(matcher.group(1));
	c2.append(" if( $2.equals(\"").append(pn).append("\") ){ return ($w)w.").append(method.getName()).append("(); }");
	pts.put(pn, method.getReturnType());
	}
	else if( ( matcher = ReflectUtils.SETTER_METHOD_DESC_PATTERN.matcher(md) ).matches() )
	{
	Class<?> pt = method.getParameterTypes()[0];
	String pn = propertyName(matcher.group(1));
	c1.append(" if( $2.equals(\"").append(pn).append("\") ){ w.").append(method.getName()).append("(").append(arg(pt,"$3")).append("); return; }");
	pts.put(pn, pt);
	}
	}
	c1.append(" throw new " + NoSuchPropertyException.class.getName() + "(\"Not found property \\\"\"+$2+\"\\\" filed or setter method in class " + c.getName() + ".\"); }");
	c2.append(" throw new " + NoSuchPropertyException.class.getName() + "(\"Not found property \\\"\"+$2+\"\\\" filed or setter method in class " + c.getName() + ".\"); }");

	// make class
	long id = WRAPPER_CLASS_COUNTER.getAndIncrement();
	ClassGenerator cc = ClassGenerator.newInstance(cl);
	cc.setClassName( ( Modifier.isPublic(c.getModifiers()) ? Wrapper.class.getName() : c.getName() + "$sw" ) + id );
	cc.setSuperClass(Wrapper.class);

	cc.addDefaultConstructor();
	cc.addField("public static String[] pns;"); // property name array.
	cc.addField("public static " + Map.class.getName() + " pts;"); // property type map.
	cc.addField("public static String[] mns;"); // all method name array.
	cc.addField("public static String[] dmns;"); // declared method name array.
	for(int i=0,len=ms.size();i<len;i++)
	cc.addField("public static Class[] mts" + i + ";");

	cc.addMethod("public String[] getPropertyNames(){ return pns; }");
	cc.addMethod("public boolean hasProperty(String n){ return pts.containsKey($1); }");
	cc.addMethod("public Class getPropertyType(String n){ return (Class)pts.get($1); }");
	cc.addMethod("public String[] getMethodNames(){ return mns; }");
	cc.addMethod("public String[] getDeclaredMethodNames(){ return dmns; }");
	cc.addMethod(c1.toString());
	cc.addMethod(c2.toString());
	cc.addMethod(c3.toString());

	try
	{
	Class<?> wc = cc.toClass();
	// setup static field.
	wc.getField("pts").set(null, pts);
	wc.getField("pns").set(null, pts.keySet().toArray(new String[0]));
	wc.getField("mns").set(null, mns.toArray(new String[0]));
	wc.getField("dmns").set(null, dmns.toArray(new String[0]));
	int ix = 0;
	for( Method m : ms.values() )
	wc.getField("mts" + ix++).set(null, m.getParameterTypes());
	return (Wrapper)wc.newInstance();
	}
	catch(RuntimeException e)
	{
	throw e;
	}
	catch(Throwable e)
	{
	throw new RuntimeException(e.getMessage(), e);
	}
	finally
	{
	cc.release();
	ms.clear();
	mns.clear();
	dmns.clear();
	}
	}

	private static String arg(Class<?> cl, String name)
	{
	if( cl.isPrimitive() )
	{
	if( cl == Boolean.TYPE )
	return "((Boolean)" + name + ").booleanValue()";
	if( cl == Byte.TYPE )
	return "((Byte)" + name + ").byteValue()";
	if( cl == Character.TYPE )
	return "((Character)" + name + ").charValue()";
	if( cl == Double.TYPE )
	return "((Number)" + name + ").doubleValue()";
	if( cl == Float.TYPE )
	return "((Number)" + name + ").floatValue()";
	if( cl == Integer.TYPE )
	return "((Number)" + name + ").intValue()";
	if( cl == Long.TYPE )
	return "((Number)" + name + ").longValue()";
	if( cl == Short.TYPE )
	return "((Number)" + name + ").shortValue()";
	throw new RuntimeException("Unknown primitive type: " + cl.getName());
	}
	return "(" + ReflectUtils.getName(cl) + ")" + name;
	}

	private static String args(Class<?>[] cs,String name)
	{
	int len = cs.length;
	if( len == 0 ) return "";
	StringBuilder sb = new StringBuilder();
	for(int i=0;i<len;i++)
	{
	if( i > 0 )
	sb.append(',');
	sb.append(arg(cs[i],name+"["+i+"]"));
	}
	return sb.toString();
	}

	private static String propertyName(String pn)
	{
	return pn.length() == 1 \|\| Character.isLowerCase(pn.charAt(1)) ? Character.toLowerCase(pn.charAt(0)) + pn.substring(1) : pn;
	}
	}