001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.camel;
018    
019    /**
020     * An exception thrown if a value could not be converted to the required type
021     *
022     * @version 
023     */
024    public class NoTypeConversionAvailableException extends CamelException {
025        private static final long serialVersionUID = -8721487434390572636L;
026    
027        private final transient Object value;
028        private final transient Class<?> type;
029    
030        public NoTypeConversionAvailableException(Object value, Class<?> type) {
031            super(createMessage(value, type));
032            this.value = value;
033            this.type = type;
034        }
035    
036        public NoTypeConversionAvailableException(Object value, Class<?> type, Throwable cause) {
037            super(createMessage(value, type, cause), cause);
038            this.value = value;
039            this.type = type;
040        }
041    
042        /**
043         * Returns the value which could not be converted
044         */
045        public Object getValue() {
046            return value;
047        }
048    
049        /**
050         * Returns the required <tt>to</tt> type
051         */
052        public Class<?> getToType() {
053            return type;
054        }
055    
056        /**
057         * Returns the required <tt>from</tt> type.
058         * Returns <tt>null</tt> if the provided value was null.
059         */
060        public Class<?> getFromType() {
061            if (value != null) {
062                return value.getClass();
063            } else {
064                return null;
065            }
066        }
067    
068        /**
069         * Returns an error message for no type converter available.
070         */
071        public static String createMessage(Object value, Class<?> type) {
072            return "No type converter available to convert from type: " + (value != null ? value.getClass().getCanonicalName() : null)
073                  + " to the required type: " + type.getCanonicalName() + " with value " + value;
074        }
075        
076        /**
077         * Returns an error message for no type converter available with the cause.
078         */
079        public static String createMessage(Object value, Class<?> type, Throwable cause) {
080            return "Converting Exception when converting from type: "
081                   + (value != null ? value.getClass().getCanonicalName() : null) + " to the required type: "
082                   + type.getCanonicalName() + " with value " + value + ", which is caused by " + cause;
083        }
084    }