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.builder.xml; 018 019 import org.apache.camel.util.ObjectHelper; 020 021 /** 022 * @version $Revision: $ 023 */ 024 public class Namespaces { 025 public static final String DEFAULT_NAMESPACE = "http://activemq.apache.org/camel/schema/spring"; 026 027 public static final String IN_NAMESPACE = "http://camel.apache.org/xml/in/"; 028 public static final String OUT_NAMESPACE = "http://camel.apache.org/xml/out/"; 029 public static final String SYSTEM_PROPERTIES_NAMESPACE = "http://camel.apache.org/xml/variables/system-properties"; 030 public static final String ENVIRONMENT_VARIABLES = "http://camel.apache.org/xml/variables/environment-variables"; 031 public static final String EXCHANGE_PROPERTY = "http://camel.apache.org/xml/variables/exchange-property"; 032 033 /** 034 * Utility classes should not have a public constructor. 035 */ 036 private Namespaces() { 037 } 038 039 /** 040 * Returns true if the given namespaceURI is empty or if it matches the 041 * given expected namespace 042 */ 043 public static boolean isMatchingNamespaceOrEmptyNamespace(String namespaceURI, String expectedNamespace) { 044 return ObjectHelper.isNullOrBlank(namespaceURI) || namespaceURI.equals(expectedNamespace); 045 } 046 047 }