/*
* Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package com.sun.tools.visualvm.modules.saplugin;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
class SAObject {
final Object instance;
Map<String,List<Method>> methodCache;
private static Map<Class,Class> primitiveTypes;
static {
primitiveTypes = new HashMap();
primitiveTypes.put(Integer.class,Integer.TYPE);
}
SAObject(Object i) {
instance = i;
if (i != null) {
methodCache = new HashMap();
Method[] methods = i.getClass().getMethods();
for (int j = 0; j < methods.length; j++) {
Method method = methods[j];
String name = method.getName();
int pars = method.getParameterTypes().length;
String id = methodId(name,pars);
List<Method> mlist = Collections.singletonList(method);
List<Method> oldlist = methodCache.put(id,mlist);
if (oldlist != null) {
List<Method> unitedList = new ArrayList(mlist);
unitedList.addAll(oldlist);
methodCache.put(id,unitedList);
}
}
}
}
boolean isNull() {
return instance == null;
}
Object invoke(String methodName,Object... parameters) throws IllegalAccessException, InvocationTargetException {
String mid = methodId(methodName,parameters.length);
List<Method> methods = methodCache.get(mid);
Method method = null;
if (methods == null) {
throw new IllegalAccessException("No method "+mid); // NOI18N
}
if (methods.size()==1) {
method = methods.get(0);
} else {
Class[] parClasses = new Class[parameters.length];
for (int i = 0; i < parameters.length; i++) {
Class cl = parameters[i].getClass();
if (primitiveTypes.containsKey(cl)) {
cl = primitiveTypes.get(cl);
}
parClasses[i] = cl;
}
for (Method m : methods) {
if (Arrays.deepEquals(m.getParameterTypes(),parClasses)) {
method = m;
break;
}
}
}
if (method == null) {
throw new IllegalArgumentException(instance+" "+methodName+" "+Arrays.toString(parameters));
}
return method.invoke(instance,parameters);
}
SAObject invokeSA(String methodName,Object... parameters) throws IllegalAccessException, InvocationTargetException {
return new SAObject(invoke(methodName,parameters));
}
private static String methodId(String name,int pars) {
return name.concat("#").concat(Integer.toString(pars)); // NOI18N
}
public String toString() {
if (instance != null) {
return instance.toString();
}
return "<null>"; // NOI18N
}
public int hashCode() {
if (instance == null)
return 0;
return instance.hashCode();
}
public boolean equals(Object obj) {
if (obj instanceof SAObject) {
SAObject saobj = (SAObject) obj;
if (instance == null) {
return saobj.instance == null;
}
return instance.equals(saobj.instance);
}
return false;
}
}