| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.camel.component.jms; |
| |
| import java.util.Enumeration; |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| import javax.jms.JMSException; |
| import javax.jms.Message; |
| |
| /** |
| * Utility class for {@link javax.jms.Message}. |
| * |
| * @version $Revision$ |
| */ |
| public final class JmsMessageHelper { |
| |
| private JmsMessageHelper() { |
| } |
| |
| /** |
| * Removes the property from the JMS message. |
| * |
| * @param jmsMessage the JMS message |
| * @param name name of the property to remove |
| * @return the old value of the property or <tt>null</tt> if not exists |
| * @throws JMSException can be thrown |
| */ |
| public static Object removeJmsProperty(Message jmsMessage, String name) throws JMSException { |
| // check if the property exists |
| if (!jmsMessage.propertyExists(name)) { |
| return null; |
| } |
| |
| Object answer = null; |
| |
| // store the properties we want to keep in a temporary map |
| // as the JMS API is a bit strict as we are not allowed to |
| // clear a single property, but must clear them all and redo |
| // the properties |
| Map<String, Object> map = new LinkedHashMap<String, Object>(); |
| Enumeration en = jmsMessage.getPropertyNames(); |
| while (en.hasMoreElements()) { |
| String key = (String) en.nextElement(); |
| if (name.equals(key)) { |
| answer = key; |
| } else { |
| map.put(key, jmsMessage.getObjectProperty(key)); |
| } |
| } |
| |
| // redo the properties to keep |
| jmsMessage.clearProperties(); |
| for (String key : map.keySet()) { |
| jmsMessage.setObjectProperty(key, map.get(key)); |
| } |
| |
| return answer; |
| } |
| |
| /** |
| * Tests whether a given property with the name exists |
| * |
| * @param jmsMessage the JMS message |
| * @param name name of the property to test if exists |
| * @return <tt>true</tt> if the property exists, <tt>false</tt> if not. |
| * @throws JMSException can be thrown |
| */ |
| public static boolean hasProperty(Message jmsMessage, String name) throws JMSException { |
| Enumeration en = jmsMessage.getPropertyNames(); |
| while (en.hasMoreElements()) { |
| String key = (String) en.nextElement(); |
| if (name.equals(key)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Sets the property on the given JMS message. |
| * |
| * @param jmsMessage the JMS message |
| * @param name name of the property to set |
| * @param value the value |
| * @throws JMSException can be thrown |
| */ |
| public static void setProperty(Message jmsMessage, String name, Object value) throws JMSException { |
| if (value == null) { |
| return; |
| } |
| if (value instanceof Byte) { |
| jmsMessage.setByteProperty(name, (Byte) value); |
| } else if (value instanceof Boolean) { |
| jmsMessage.setBooleanProperty(name, (Boolean) value); |
| } else if (value instanceof Double) { |
| jmsMessage.setDoubleProperty(name, (Double) value); |
| } else if (value instanceof Float) { |
| jmsMessage.setFloatProperty(name, (Float) value); |
| } else if (value instanceof Integer) { |
| jmsMessage.setIntProperty(name, (Integer) value); |
| } else if (value instanceof Long) { |
| jmsMessage.setLongProperty(name, (Long) value); |
| } else if (value instanceof Short) { |
| jmsMessage.setShortProperty(name, (Short) value); |
| } else if (value instanceof String) { |
| jmsMessage.setStringProperty(name, (String) value); |
| } else { |
| // fallback to Object |
| jmsMessage.setObjectProperty(name, value); |
| } |
| } |
| |
| } |