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: NSInfo.java 468655 2006-10-28 07:12:06Z minchau $
020     */
021    package org.apache.xml.utils;
022    
023    /**
024     * This class holds information about the namespace info
025     * of a node.  It is used to optimize namespace lookup in
026     * a generic DOM.
027     * @xsl.usage internal
028     */
029    public class NSInfo
030    {
031    
032      /**
033       * Constructor NSInfo
034       *
035       *
036       * @param hasProcessedNS Flag indicating whether namespaces
037       * have been processed for this node 
038       * @param hasXMLNSAttrs Flag indicating whether this node
039       * has XMLNS attributes. 
040       */
041      public NSInfo(boolean hasProcessedNS, boolean hasXMLNSAttrs)
042      {
043    
044        m_hasProcessedNS = hasProcessedNS;
045        m_hasXMLNSAttrs = hasXMLNSAttrs;
046        m_namespace = null;
047        m_ancestorHasXMLNSAttrs = ANCESTORXMLNSUNPROCESSED;
048      }
049    
050      // Unused at the moment
051    
052      /**
053       * Constructor NSInfo
054       *
055       *
056       * @param hasProcessedNS Flag indicating whether namespaces
057       * have been processed for this node 
058       * @param hasXMLNSAttrs Flag indicating whether this node
059       * has XMLNS attributes. 
060       * @param ancestorHasXMLNSAttrs Flag indicating whether one of this node's
061       * ancestor has XMLNS attributes.
062       */
063      public NSInfo(boolean hasProcessedNS, boolean hasXMLNSAttrs,
064                    int ancestorHasXMLNSAttrs)
065      {
066    
067        m_hasProcessedNS = hasProcessedNS;
068        m_hasXMLNSAttrs = hasXMLNSAttrs;
069        m_ancestorHasXMLNSAttrs = ancestorHasXMLNSAttrs;
070        m_namespace = null;
071      }
072    
073      /**
074       * Constructor NSInfo
075       *
076       *
077       * @param namespace The namespace URI 
078       * @param hasXMLNSAttrs Flag indicating whether this node
079       * has XMLNS attributes.
080       */
081      public NSInfo(String namespace, boolean hasXMLNSAttrs)
082      {
083    
084        m_hasProcessedNS = true;
085        m_hasXMLNSAttrs = hasXMLNSAttrs;
086        m_namespace = namespace;
087        m_ancestorHasXMLNSAttrs = ANCESTORXMLNSUNPROCESSED;
088      }
089    
090      /** The namespace URI          */
091      public String m_namespace;
092    
093      /** Flag indicating whether this node has an XMLNS attribute          */
094      public boolean m_hasXMLNSAttrs;
095    
096      /** Flag indicating whether namespaces have been processed for this node */
097      public boolean m_hasProcessedNS;
098    
099      /** Flag indicating whether one of this node's ancestor has an XMLNS attribute          */
100      public int m_ancestorHasXMLNSAttrs;
101    
102      /** Constant for ancestors XMLNS atributes not processed          */
103      public static final int ANCESTORXMLNSUNPROCESSED = 0;
104    
105      /** Constant indicating an ancestor has an XMLNS attribute           */
106      public static final int ANCESTORHASXMLNS = 1;
107    
108      /** Constant indicating ancestors don't have an XMLNS attribute           */
109      public static final int ANCESTORNOXMLNS = 2;
110    }