001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the "License"); 007 * you may not use this file except in compliance with the License. 008 * 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 /* 019 * $Id: FilteredStepIterator.java 468651 2006-10-28 07:04:25Z minchau $ 020 */ 021 022 package org.apache.xalan.xsltc.dom; 023 024 import org.apache.xml.dtm.DTMAxisIterator; 025 026 /** 027 * Extends a StepIterator by adding the ability to filter nodes. It 028 * uses filters similar to those of a FilterIterator. 029 * @author Jacek Ambroziak 030 * @author Santiago Pericas-Geertsen 031 * @author Morten Jorgensen 032 */ 033 public final class FilteredStepIterator extends StepIterator { 034 035 private Filter _filter; 036 037 public FilteredStepIterator(DTMAxisIterator source, 038 DTMAxisIterator iterator, 039 Filter filter) { 040 super(source, iterator); 041 _filter = filter; 042 } 043 044 public int next() { 045 int node; 046 while ((node = super.next()) != END) { 047 if (_filter.test(node)) { 048 return returnNode(node); 049 } 050 } 051 return node; 052 } 053 054 }