001    package org.apache.commons.ognl;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one
005     * or more contributor license agreements.  See the NOTICE file
006     * distributed with this work for additional information
007     * regarding copyright ownership.  The ASF licenses this file
008     * to you under the Apache License, Version 2.0 (the
009     * "License"); you may not use this file except in compliance
010     * with the License.  You may obtain a copy of the License at
011     *
012     *   http://www.apache.org/licenses/LICENSE-2.0
013     *
014     * Unless required by applicable law or agreed to in writing,
015     * software distributed under the License is distributed on an
016     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017     * KIND, either express or implied.  See the License for the
018     * specific language governing permissions and limitations
019     * under the License.
020     */
021    
022    import java.lang.reflect.Method;
023    import java.util.List;
024    import java.util.Map;
025    
026    /**
027     * Implementation of PropertyAccessor that uses reflection on the target object's class to find a field or a pair of
028     * set/get methods with the given property name.
029     * 
030     * @author Luke Blanshard (blanshlu@netscape.net)
031     * @author Drew Davidson (drew@ognl.org)
032     */
033    public class ObjectMethodAccessor
034        implements MethodAccessor
035    {
036    
037        /**
038         * {@inheritDoc}
039         */
040        public Object callStaticMethod( Map<String, Object> context, Class<?> targetClass, String methodName,
041                                        Object[] args )
042            throws MethodFailedException
043        {
044            List<Method> methods = OgnlRuntime.getMethods( targetClass, methodName, true );
045    
046            return OgnlRuntime.callAppropriateMethod( (OgnlContext) context, targetClass, null, methodName, null, methods,
047                                                      args );
048        }
049    
050        /**
051         * {@inheritDoc}
052         */
053        public Object callMethod( Map<String, Object> context, Object target, String methodName, Object[] args )
054            throws MethodFailedException
055        {
056            Class<?> targetClass = ( target == null ) ? null : target.getClass();
057            List<Method> methods = OgnlRuntime.getMethods( targetClass, methodName, false );
058    
059            if ( ( methods == null ) || ( methods.size() == 0 ) )
060            {
061                methods = OgnlRuntime.getMethods( targetClass, methodName, true );
062    
063            }
064    
065            return OgnlRuntime.callAppropriateMethod( (OgnlContext) context, target, target, methodName, null, methods,
066                                                      args );
067        }
068    }