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 * Evaluation state of a <code>...//...</code> XPath expression. Applies the 21 * contained evaluation state to the current element and all its descendants. 22 */ 23 public class SubtreeMatcher extends Matcher { 24 25 private final Matcher then; 26 27 public SubtreeMatcher(Matcher then) { 28 this.then = then; 29 } 30 31 @Override 32 public Matcher descend(String namespace, String name) { 33 Matcher next = then.descend(namespace, name); 34 if (next == FAIL || next == then) { 35 return this; 36 } else { 37 return new CompositeMatcher(next, this); 38 } 39 } 40 41 @Override 42 public boolean matchesElement() { 43 return then.matchesElement(); 44 } 45 46 @Override 47 public boolean matchesAttribute(String namespace, String name) { 48 return then.matchesAttribute(namespace, name); 49 } 50 51 @Override 52 public boolean matchesText() { 53 return then.matchesText(); 54 } 55 56 }