動的エージェント性能比較
3679 ワード
自動回転http://javatar.iteye.com/blog/814426
// javassit
public T createJavassistBytecodeDynamicProxy(LoadBalance loadBalance,ConcurrentMap<String, T> map,Class ifaces){
try{
ClassPool mPool = new ClassPool(true);
CtClass mCtc = mPool.makeClass(ifaces.getName() + "JavaassistProxy");
mCtc.addInterface(mPool.get(ifaces.getName()));
mCtc.addConstructor(CtNewConstructor.defaultConstructor(mCtc));
mCtc.addField(CtField.make("public " + loadBalance.getClass().getName() + " sub;", mCtc));
mCtc.addField(CtField.make("public " + map.getClass().getName() + " map;", mCtc));
// mCtc.addField(CtField.make("public " + ArrayList.class.getName() + " list;", mCtc));
mCtc.addMethod(CtNewMethod.make("public Object getRealClient() { return (Object)sub.select(new "+ArrayList.class.getName()+"(map.values())); }",mCtc));
//
for(Method method: ifaces.getMethods()){
Class returnType = method.getReturnType();
String modifiers = "public";
if(Modifier.PUBLIC==method.getModifiers()){
modifiers="public";
}else if(Modifier.PROTECTED==method.getModifiers()){
modifiers="protected";
}else if(Modifier.PRIVATE==method.getModifiers()){
modifiers="private";
}
Class<?>[] parameter = method.getParameterTypes();
String params = "";
String ps = "";
for(Class param:parameter){
params += param.getName()+" "+param.getName()+",";
ps+=param.getName()+",";
}
if(params.equals("")){
params = "";
ps="";
}else{
params=params.substring(0,params.length());
ps=ps.substring(0,ps.length());
}
mCtc.addMethod(CtNewMethod.make(modifiers +" void "+method.getName()+"(String a,String b){ Object t=this.getRealClient(); return (("+ifaces.getName()+")t)."+method.getName()+"(a,b) ;}", mCtc));
// mCtc.addMethod(CtNewMethod.make("public int count() { return delegate.count(); }", mCtc));
}
Class<?> pc = mCtc.toClass();
mCtc.debugWriteFile("/home/liguojun");
mCtc.writeFile("/home/liguojun");
T bytecodeProxy = (T) pc.newInstance();
Field filed = bytecodeProxy.getClass().getField("sub");
filed.set(bytecodeProxy, loadBalance);
Field filed1 = bytecodeProxy.getClass().getField("map");
filed1.set(bytecodeProxy, map);
return bytecodeProxy;
}catch (Exception e){
e.printStackTrace();
}
return null;
}
注意:ただし、new ArayListを書く時には識別できません。すべて文字列形式で書かなければなりません。つまりnew ArayList.lass.get Name()、return((("+ifaces.get Name")))t)は同じです。