001    // Copyright 2010 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    // http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry5.ioc.util;
016    
017    import org.apache.tapestry5.ioc.internal.util.TapestryException;
018    
019    /**
020     * Special exception used when a value (typically from a map) is referenced that does not exist. Uses a
021     * {@link AvailableValues} object
022     * to track what the known values are.
023     * 
024     * @since 5.2.0
025     */
026    public class UnknownValueException extends TapestryException
027    {
028        private final AvailableValues availableValues;
029    
030        public UnknownValueException(String message, AvailableValues availableValues)
031        {
032            this(message, null, null, availableValues);
033        }
034    
035        public UnknownValueException(String message, Object location, Throwable cause, AvailableValues availableValues)
036        {
037            super(message, location, cause);
038    
039            this.availableValues = availableValues;
040        }
041    
042        public AvailableValues getAvailableValues()
043        {
044            return availableValues;
045        }
046    
047    }