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 caused when a mandatory property is not available on a message
021 * {@link Exchange}
022 *
023 * @see org.apache.camel.util.ExchangeHelper#getMandatoryProperty(Exchange, String, Class)
024 *
025 * @version $Revision: 751221 $
026 */
027 public class NoSuchPropertyException extends CamelExchangeException {
028 private static final long serialVersionUID = -8721487431101572630L;
029 private final String propertyName;
030 private final Class<?> type;
031
032 public NoSuchPropertyException(Exchange exchange, String propertyName, Class<?> type) {
033 super("No '" + propertyName + "' property available of type: " + type.getName()
034 + reason(exchange, propertyName), exchange);
035 this.propertyName = propertyName;
036 this.type = type;
037 }
038
039 public String getPropertyName() {
040 return propertyName;
041 }
042
043 public Class<?> getType() {
044 return type;
045 }
046
047 protected static String reason(Exchange exchange, String propertyName) {
048 Object value = exchange.getProperty(propertyName);
049 return valueDescription(value);
050 }
051
052 static String valueDescription(Object value) {
053 if (value == null) {
054 return "";
055 }
056 return " but has value: " + value + " of type: " + value.getClass().getName();
057 }
058 }