1 /* 2 * reserved comment block 3 * DO NOT REMOVE OR ALTER! 4 */ 5 /* 6 * Copyright 1999-2004 The Apache Software Foundation. 7 * 8 * Licensed under the Apache License, Version 2.0 (the "License"); 9 * you may not use this file except in compliance with the License. 10 * You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, software 15 * distributed under the License is distributed on an "AS IS" BASIS, 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17 * See the License for the specific language governing permissions and 18 * limitations under the License. 19 * 20 */ 21 package com.sun.org.apache.xml.internal.security.signature; 22 23 import org.w3c.dom.Node; 24 25 /** 26 * An interface to tell to the c14n if a node is included or not in the output 27 * @author raul 28 * 29 */ 30 public interface NodeFilter { 31 /** 32 * Tells if a node must be outputed in c14n. 33 * @param n 34 * @return 1 if the node should be outputed. 35 * 0 if node must not be outputed, 36 * -1 if the node and all it's child must not be output. 37 * 38 */ 39 public int isNodeInclude(Node n); 40 /** 41 * Tells if a node must be outputed in a c14n. 42 * The caller must assured that this method is always call 43 * in document order. The implementations can use this 44 * restriction to optimize the transformation. 45 * @param n 46 * @param level the relative level in the tree 47 * @return 1 if the node should be outputed. 48 * 0 if node must not be outputed, 49 * -1 if the node and all it's child must not be output. 50 */ 51 public int isNodeIncludeDO(Node n, int level); 52 53 }