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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.xerces.dom;

/**
 * Notations are how the Document Type Description (DTD) records hints
 * about the format of an XML "unparsed entity" -- in other words,
 * non-XML data bound to this document type, which some applications
 * may wish to consult when manipulating the document. A Notation
 * represents a name-value pair, with its nodeName being set to the
 * declared name of the notation.
 * 
 * Notations are also used to formally declare the "targets" of
 * Processing Instructions.
 * 

 * Note that the Notation's data is non-DOM information; the DOM only
 * records what and where it is.
 * 

 * See the XML 1.0 spec, sections 4.7 and 2.6, for more info.
 * 
 * Level 1 of the DOM does not support editing Notation contents.
 * 
 * @xerces.internal
 *
 * @version $Id: DeferredNotationImpl.java 447266 2006-09-18 05:57:49Z mrglavas $
 * @since  PR-DOM-Level-1-19980818.
 */
public class DeferredNotationImpl
    extends NotationImpl
    implements DeferredNode {

    //
    // Constants
    //

    /** Serialization version. */
    static final long serialVersionUID = 5705337172887990848L;

    //
    // Data
    //

    /** Node index. */
    protected transient int fNodeIndex;

    //
    // Constructors
    //

    /**
     * This is the deferred constructor. Only the fNodeIndex is given here.
     * All other data, can be requested from the ownerDocument via the index.
     */
    DeferredNotationImpl(DeferredDocumentImpl ownerDocument, int nodeIndex) {
        super(ownerDocument, null);

        fNodeIndex = nodeIndex;
        needsSyncData(true);

    } // (DeferredDocumentImpl,int)

    //
    // DeferredNode methods
    //

    /** Returns the node index. */
    public int getNodeIndex() {
        return fNodeIndex;
    }

    //
    // Protected methods
    //

    /**
     * Synchronizes the data. This is special because of the way
     * that the "fast" notation stores its information internally.
     */
    protected void synchronizeData() {

        // no need to synchronize again
        needsSyncData(false);

        // name
        DeferredDocumentImpl ownerDocument =
            (DeferredDocumentImpl)this.ownerDocument();
        name = ownerDocument.getNodeName(fNodeIndex);

        ownerDocument.getNodeType(fNodeIndex);
        // public and system ids
        publicId = ownerDocument.getNodeValue(fNodeIndex);
        systemId = ownerDocument.getNodeURI(fNodeIndex);
        int extraDataIndex = ownerDocument.getNodeExtra(fNodeIndex);
        ownerDocument.getNodeType(extraDataIndex);
        baseURI = ownerDocument.getNodeName(extraDataIndex);


    } // synchronizeData()

} // class DeferredNotationImpl