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 /**
021 * An exception caused when a mandatory property is not available on a message
022 * {@link Exchange}
023 *
024 * @see ExchangeHelper#getMandatoryProperty(Exchange, String, Class)
025 *
026 * @version $Revision: 563607 $
027 */
028 public class NoSuchPropertyException extends CamelExchangeException {
029 private static final long serialVersionUID = -8721487431101572630L;
030 private final String propertyName;
031 private final Class<?> type;
032
033 public NoSuchPropertyException(Exchange exchange, String propertyName, Class<?> type) {
034 super("No '" + propertyName + "' property available of type: " + type.getName()
035 + reason(exchange, propertyName), exchange);
036 this.propertyName = propertyName;
037 this.type = type;
038 }
039
040 public String getPropertyName() {
041 return propertyName;
042 }
043
044 public Class<?> getType() {
045 return type;
046 }
047
048 protected static String reason(Exchange exchange, String propertyName) {
049 Object value = exchange.getProperty(propertyName);
050 return valueDescription(value);
051 }
052
053 static String valueDescription(Object value) {
054 if (value == null) {
055 return "";
056 }
057 return " but has value: " + value + " of type: " + value.getClass().getName();
058 }
059 }