| /************************************************************** |
| * |
| * 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 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the 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() ); |
| } |
| } |
| |