1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package org.apache.tika.sax.xpath; 18 19 /** 20 * Intermediate evaluation state of a <code>.../name...</code> XPath 21 * expression. Matches nothing, but specifies the evaluation state 22 * for the child elements with the given name. 23 */ 24 public class NamedElementMatcher extends ChildMatcher { 25 26 private final String namespace; 27 28 private final String name; 29 30 protected NamedElementMatcher(String namespace, String name, Matcher then) { 31 super(then); 32 this.namespace = namespace; 33 this.name = name; 34 } 35 36 public Matcher descend(String namespace, String name) { 37 if (equals(namespace, this.namespace) && name.equals(this.name)) { 38 return super.descend(namespace, name); 39 } else { 40 return FAIL; 41 } 42 } 43 44 private static boolean equals(String a, String b) { 45 return (a == null) ? (b == null) : a.equals(b); 46 } 47 48 }