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 java.util.HashMap;
020 import java.util.Map;
021 import java.util.Set;
022
023 /**
024 * A helper class for creating namespaces which can then be used to create XPath expressions
025 *
026 * @version $Revision: 1.1 $
027 */
028 public class NamespaceBuilder {
029 private Map<String, String> namespaces = new HashMap<String, String>();
030
031 public static NamespaceBuilder namespaceContext() {
032 return new NamespaceBuilder();
033 }
034
035 public static NamespaceBuilder namespaceContext(String prefix, String uri) {
036 return new NamespaceBuilder().namespace(prefix, uri);
037 }
038
039 public NamespaceBuilder namespace(String prefix, String uri) {
040 namespaces.put(prefix, uri);
041 return this;
042 }
043
044 /**
045 * Creates a new XPath expression using the current namespaces
046 *
047 * @param xpath the XPath expression
048 * @return a new XPath expression
049 */
050 public XPathBuilder xpath(String xpath) {
051 XPathBuilder answer = XPathBuilder.xpath(xpath);
052 Set<Map.Entry<String, String>> entries = namespaces.entrySet();
053 for (Map.Entry<String, String> entry : entries) {
054 answer.namespace(entry.getKey(), entry.getValue());
055 }
056 return answer;
057 }
058 }