/*
* reserved comment block
* DO NOT REMOVE OR ALTER!
*/
/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package com.sun.org.apache.xml.internal.security.signature;
import org.w3c.dom.Node;
/**
* An interface to tell to the c14n if a node is included or not in the output
* @author raul
*
*/
public interface NodeFilter {
/**
* Tells if a node must be outputed in c14n.
* @param n
* @return 1 if the node should be outputed.
* 0 if node must not be outputed,
* -1 if the node and all it's child must not be output.
*
*/
public int isNodeInclude(Node n);
/**
* Tells if a node must be outputed in a c14n.
* The caller must assured that this method is always call
* in document order. The implementations can use this
* restriction to optimize the transformation.
* @param n
* @param level the relative level in the tree
* @return 1 if the node should be outputed.
* 0 if node must not be outputed,
* -1 if the node and all it's child must not be output.
*/
public int isNodeIncludeDO(Node n, int level);
}