001 /**
002 *
003 * Licensed to the Apache Software Foundation (ASF) under one or more
004 * contributor license agreements. See the NOTICE file distributed with
005 * this work for additional information regarding copyright ownership.
006 * The ASF licenses this file to You under the Apache License, Version 2.0
007 * (the "License"); you may not use this file except in compliance with
008 * the License. You may obtain a copy of the License at
009 *
010 * http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018 package org.apache.camel.builder.xml;
019
020 import java.util.Map;
021 import java.util.HashMap;
022 import java.util.Set;
023
024 /**
025 * A helper class for creating namespaces which can then be used to create XPath expressions
026 *
027 * @version $Revision: 1.1 $
028 */
029 public class NamespaceBuilder {
030 private Map<String,String> namespaces = new HashMap<String, String>();
031
032 public static NamespaceBuilder namespaceContext() {
033 return new NamespaceBuilder();
034 }
035
036 public static NamespaceBuilder namespaceContext(String prefix, String uri) {
037 return new NamespaceBuilder().namespace(prefix, uri);
038 }
039
040 public NamespaceBuilder namespace(String prefix, String uri) {
041 namespaces.put(prefix, uri);
042 return this;
043 }
044
045 /**
046 * Creates a new XPath expression using the current namespaces
047 *
048 * @param xpath the XPath expression
049 * @return a new XPath expression
050 */
051 public XPathBuilder xpath(String xpath) {
052 XPathBuilder answer = XPathBuilder.xpath(xpath);
053 Set<Map.Entry<String,String>> entries = namespaces.entrySet();
054 for (Map.Entry<String, String> entry : entries) {
055 answer.namespace(entry.getKey(), entry.getValue());
056 }
057 return answer;
058 }
059 }