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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: StrictResolver.java,v $
* $Revision: 1.3 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
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.
*
* @author Tomas O'Connor
* @created August 2, 2002
*/
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: Cant find method: "
+ sd.getMethodName() + ":" + e.getMessage() );
}
catch ( NoSuchMethodException e )
{
throw new NoSuchMethodException( "StrictResolver.getProxy: Cant 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: Cant instantiate: " +
c.getName() );
}
catch ( IllegalAccessException iae )
{
throw new NoSuchMethodException( "getScriptProxy: Cant 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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