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    /**
023     * Exception thrown if a property is attempted to be extracted from an object that does not have such a property.
024     * 
025     * @author Luke Blanshard (blanshlu@netscape.net)
026     * @author Drew Davidson (drew@ognl.org)
027     */
028    public class NoSuchPropertyException
029        extends OgnlException
030    {
031    
032        private static final long serialVersionUID = 2228428181127177178L;
033    
034        private Object target;
035    
036        private Object name;
037    
038        public NoSuchPropertyException( Object target, Object name )
039        {
040            super( getReason( target, name ) );
041        }
042    
043        public NoSuchPropertyException( Object target, Object name, Throwable reason )
044        {
045            super( getReason( target, name ), reason );
046            this.target = target;
047            this.name = name;
048        }
049    
050        static String getReason( Object target, Object name )
051        {
052            StringBuilder ret = new StringBuilder();
053    
054            if ( target == null )
055            {
056                ret.append( "null" );
057            }
058            else if ( target instanceof Class )
059            {
060                ret.append( ( (Class<?>) target ).getName() );
061            }
062            else
063            {
064                ret.append( target.getClass().getName() );
065            }
066    
067            ret.append( "." ).append( name );
068    
069            return ret.toString();
070        }
071    
072        public Object getTarget()
073        {
074            return target;
075        }
076    
077        public Object getName()
078        {
079            return name;
080        }
081    }