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

 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.
  * The ASF licenses this file to You 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 com.alibaba.dubbo.common.utils.ClassHelper;
 import com.alibaba.dubbo.common.utils.ReflectUtils;

 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;

 /**
  * Wrapper.
  */
 public abstract class Wrapper {
     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() {
         @Override
         public String[] getMethodNames() {
             return OBJECT_METHODS;
         }

         @Override
         public String[] getDeclaredMethodNames() {
             return OBJECT_METHODS;
         }

         @Override
         public String[] getPropertyNames() {
             return EMPTY_STRING_ARRAY;
         }

         @Override
         public Class<?> getPropertyType(String pn) {
             return null;
         }

         @Override
         public Object getPropertyValue(Object instance, String pn) throws NoSuchPropertyException {
             throw new NoSuchPropertyException("Property [" + pn + "] not found.");
         }

         @Override
         public void setPropertyValue(Object instance, String pn, Object pv) throws NoSuchPropertyException {
             throw new NoSuchPropertyException("Property [" + pn + "] not found.");
         }

         @Override
         public boolean hasProperty(String name) {
             return false;
         }

         @Override
         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.");
         }
     };
     private static AtomicLong WRAPPER_CLASS_COUNTER = new AtomicLong(0);

     /**
      * 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;
     }

     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); }");

         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.
         boolean hasMethod = hasMethods(methods);
         if (hasMethod) {
             c3.append(" try{");
         }
         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);
         }
         if (hasMethod) {
             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;
     }

     private static boolean hasMethods(Method[] methods) {
         if (methods == null || methods.length == 0) {
             return false;
         }
         for (Method m : methods) {
             if (m.getDeclaringClass() != Object.class) {
                 return true;
             }
         }
         return false;
     }

     /**
      * 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;
 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one or more
	* contributor license agreements. See the NOTICE file distributed with
	* this work for additional information regarding copyright ownership.
	* The ASF licenses this file to You 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 com.alibaba.dubbo.common.utils.ClassHelper;
	import com.alibaba.dubbo.common.utils.ReflectUtils;

	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;

	/**
	* Wrapper.
	*/
	public abstract class Wrapper {
	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() {
	@Override
	public String[] getMethodNames() {
	return OBJECT_METHODS;
	}

	@Override
	public String[] getDeclaredMethodNames() {
	return OBJECT_METHODS;
	}

	@Override
	public String[] getPropertyNames() {
	return EMPTY_STRING_ARRAY;
	}

	@Override
	public Class<?> getPropertyType(String pn) {
	return null;
	}

	@Override
	public Object getPropertyValue(Object instance, String pn) throws NoSuchPropertyException {
	throw new NoSuchPropertyException("Property [" + pn + "] not found.");
	}

	@Override
	public void setPropertyValue(Object instance, String pn, Object pv) throws NoSuchPropertyException {
	throw new NoSuchPropertyException("Property [" + pn + "] not found.");
	}

	@Override
	public boolean hasProperty(String name) {
	return false;
	}

	@Override
	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.");
	}
	};
	private static AtomicLong WRAPPER_CLASS_COUNTER = new AtomicLong(0);

	/**
	* 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;
	}

	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); }");

	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.
	boolean hasMethod = hasMethods(methods);
	if (hasMethod) {
	c3.append(" try{");
	}
	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);
	}
	if (hasMethod) {
	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;
	}

	private static boolean hasMethods(Method[] methods) {
	if (methods == null \|\| methods.length == 0) {
	return false;
	}
	for (Method m : methods) {
	if (m.getDeclaringClass() != Object.class) {
	return true;
	}
	}
	return false;
	}

	/**
	* 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;
	}