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/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
package com.sun.star.script.framework.provider.java;
import com.sun.star.script.framework.log.LogUtils;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
/**
* A StrictResolver can be used to get a ScriptProxy object for a given
* ScriptDescriptor and Class. The StrictResolver is an implementation of
* the Resolver strategy. It will only return a ScriptProxy object if a
* method accepting all of the arguments specified in the ScriptDescriptor
* can be found in the Class.
*/
public class StrictResolver implements Resolver {
/**
*Constructor for the StrictResolver object
*/
public StrictResolver() {
LogUtils.DEBUG(this.getClass().getName() + " created");
}
/**
* Returns a ScriptProxy object for the given ScriptDescriptor and Class.
* Only a strict match will be returned ie. where all of the arguments in
* the given ScriptDescriptor match the types of the
*
* @param sd the ScriptDescriptor for which a ScriptProxy is required
* @param c the Class file in which to search for the method
* @return the ScriptProxy matching the criteria, or null if no match is found
*/
public ScriptProxy getProxy(ScriptDescriptor sd, Class<?> c) throws
NoSuchMethodException {
Method m = null;
LogUtils.DEBUG("StrictResolver.getProxy() for: " + sd.toString());
try {
m = resolveArguments(sd, c);
} catch (ClassNotFoundException ex1) {
NoSuchMethodException ex2 = new NoSuchMethodException(
"StrictResolver.getProxy: Can't find method: " + sd.getMethodName());
ex2.initCause(ex1);
throw ex2;
} catch (NoSuchMethodException ex1) {
NoSuchMethodException ex2 = new NoSuchMethodException(
"StrictResolver.getProxy: Can't find method: " + sd.getMethodName());
ex2.initCause(ex1);
throw ex2;
}
ScriptProxy sp = new ScriptProxy(m);
int modifiers = m.getModifiers();
if (!Modifier.isStatic(modifiers)) {
Object o;
try {
o = c.newInstance();
} catch (InstantiationException ex1) {
NoSuchMethodException ex2 = new NoSuchMethodException(
"getScriptProxy: Can't instantiate: " + c.getName());
ex2.initCause(ex1);
throw ex2;
} catch (IllegalAccessException ex1) {
NoSuchMethodException ex2 = new NoSuchMethodException(
"getScriptProxy: Can't access: " + c.getName());
ex2.initCause(ex1);
throw ex2;
}
sp.setTargetObject(o);
}
return sp;
}
/**
* Description of the Method
*
* @param sd Description of the Parameter
* @param c Description of the Parameter
* @return Description of the Return Value
* @exception ClassNotFoundException
* @exception NoSuchMethodException
*/
private Method resolveArguments(ScriptDescriptor sd, Class<?> c) throws
ClassNotFoundException, NoSuchMethodException {
return c.getMethod(sd.getMethodName(), sd.getArgumentTypes());
}
}
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