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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 java.lang.reflect.*;
import com.sun.star.script.framework.log.LogUtils;
/**
* 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;
ScriptProxy sp = null;
LogUtils.DEBUG( "StrictResolver.getProxy() for: " + sd.toString() );
try
{
m = resolveArguments( sd, c );
}
catch ( ClassNotFoundException e )
{
throw new NoSuchMethodException( "StrictResolver.getProxy: Can't find method: "
+ sd.getMethodName() + ":" + e.getMessage() );
}
catch ( NoSuchMethodException e )
{
throw new NoSuchMethodException( "StrictResolver.getProxy: Can't find method: "
+ sd.getMethodName() + ":" + e.getMessage() );
}
sp = new ScriptProxy( m );
int modifiers = m.getModifiers();
if ( !Modifier.isStatic( modifiers ) )
{
Object o;
try
{
o = c.newInstance();
}
catch ( InstantiationException ie )
{
throw new NoSuchMethodException( "getScriptProxy: Can't instantiate: " +
c.getName() );
}
catch ( IllegalAccessException iae )
{
throw new NoSuchMethodException( "getScriptProxy: Can't access: "
+ c.getName() );
}
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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