Package org.exolab.castor.xml.schema.reader

Source Code of org.exolab.castor.xml.schema.reader.DocumentationUnmarshaller

/**
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided
* that the following conditions are met:
*
* 1. Redistributions of source code must retain copyright
*    statements and notices.  Redistributions must also contain a
*    copy of this document.
*
* 2. Redistributions in binary form must reproduce the
*    above copyright notice, this list of conditions and the
*    following disclaimer in the documentation and/or other
*    materials provided with the distribution.
*
* 3. The name "Exolab" must not be used to endorse or promote
*    products derived from this Software without prior written
*    permission of Intalio, Inc.  For written permission,
*    please contact info@exolab.org.
*
* 4. Products derived from this Software may not be called "Exolab"
*    nor may "Exolab" appear in their names without prior written
*    permission of Intalio, Inc. Exolab is a registered
*    trademark of Intalio, Inc.
*
* 5. Due credit should be given to the Exolab Project
*    (http://www.exolab.org/).
*
* THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
* INTALIO, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Copyright 1999-2003 (C) Intalio, Inc. All Rights Reserved.
*
* $Id: DocumentationUnmarshaller.java 7410 2008-01-30 23:27:39Z wguttmn $
*/

package org.exolab.castor.xml.schema.reader;

import org.exolab.castor.xml.AttributeSet;
import org.exolab.castor.xml.Namespaces;
import org.exolab.castor.xml.XMLException;
import org.exolab.castor.xml.schema.Documentation;
import org.exolab.castor.xml.schema.SchemaContext;
import org.exolab.castor.xml.schema.SchemaNames;
import org.exolab.castor.types.AnyNode;

import java.util.Enumeration;
import java.util.Stack;

/**
* A class for Unmarshalling XML Schema <documentation> elements
* @author <a href="mailto:kvisco@intalio.com">Keith Visco</a>
* @version $Revision: 7410 $ $Date: 2004-10-01 07:25:46 -0600 (Fri, 01 Oct 2004) $
**/
public class DocumentationUnmarshaller extends ComponentReader {


      //--------------------/
     //- Member Variables -/
    //--------------------/

    /**
     * The Attribute reference for the Attribute we are constructing
     */
    private Documentation _documentation = null;

    /**
     * Stack of AnyNodes being unmarshalled
     */
    private Stack _nodes = null;

      //----------------/
     //- Constructors -/
    //----------------/

    /**
     * Creates a new DocumentationUnmarshaller.
     * @param schemaContext the schema context to get some configuration settings from
     * @param atts the AttributeList
    **/
    public DocumentationUnmarshaller(final SchemaContext schemaContext, final AttributeSet atts) {
        super(schemaContext);

        _documentation = new Documentation();

        //-- @source
        _documentation.setSource(atts.getValue(SchemaNames.SOURCE_ATTR));

        _nodes = new Stack();

    } //-- DocumentationUnmarshaller

      //-----------/
     //- Methods -/
    //-----------/

    /**
     * Returns the name of the element that this ComponentReader
     * handles
     * @return the name of the element that this ComponentReader
     * handles
    **/
    public String elementName() {
        return SchemaNames.DOCUMENTATION;
    } //-- elementName

    /**
     * Called to signal an end of unmarshalling. This method should
     * be overridden to perform any necessary clean up by an unmarshaller
    **/
    public void finish() {
        //-- do nothing
    } //-- finish

    /**
     *
    **/
    public Documentation getDocumentation() {
        return _documentation;
    } //-- getDocumentation

    /**
     * Returns the Object created by this ComponentReader
     * @return the Object created by this ComponentReader
    **/
    public Object getObject() {
        return getDocumentation();
    } //-- getObject

    /**
     * Signals the start of an element with the given name.
     *
     * @param name the NCName of the element. It is an error
     * if the name is a QName (ie. contains a prefix).
     * @param namespace the namespace of the element. This may be null.
     * Note: A null namespace is not the same as the default namespace unless
     * the default namespace is also null.
     * @param atts the AttributeSet containing the attributes associated
     * with the element.
     * @param nsDecls the namespace declarations being declared for this
     * element. This may be null.
    **/
    public void startElement(String name, String namespace, AttributeSet atts,
        Namespaces nsDecls)
        throws XMLException
    {
       
        String prefix = null;
        if (nsDecls != null) {
            //-- find prefix (elements use default namespace if null)
            if (namespace == null) namespace = "";
            prefix = nsDecls.getNamespacePrefix(namespace);
        }
       
        AnyNode node = new AnyNode(AnyNode.ELEMENT, name, prefix, namespace, null);
        _nodes.push(node);
       
        //-- process namespace nodes
        if (nsDecls != null) {
            Enumeration enumeration = nsDecls.getLocalNamespaces();
            while (enumeration.hasMoreElements()) {
                namespace = (String)enumeration.nextElement();
                prefix = nsDecls.getNamespacePrefix(namespace);
                node.addNamespace ( new AnyNode(AnyNode.NAMESPACE,
                                                null,  //-- no local name for a ns decl.
                                                prefix,
                                                namespace,
                                                null)); //-- no value
            }
        }
        //-- process attributes
        if (atts != null) {
            for (int i = 0; i < atts.getSize(); i++) {
                namespace = atts.getNamespace(i);
                if ((nsDecls != null) && (namespace != null)) {
                    prefix = nsDecls.getNamespacePrefix(namespace);
                }
                else prefix = null;
                node.addAttribute( new AnyNode(AnyNode.ATTRIBUTE,
                                           atts.getName(i),
                                           prefix, namespace,
                                           atts.getValue(i)) );
            }
        }

    } //-- startElement

    /**
     * Signals to end of the element with the given name.
     *
     * @param name the NCName of the element. It is an error
     * if the name is a QName (ie. contains a prefix).
     * @param namespace the namespace of the element.
    **/
    public void endElement(String name, String namespace)
        throws XMLException
    {
        AnyNode node = (AnyNode)_nodes.pop();
        if (_nodes.isEmpty()) {
            //-- add to appInfo
            _documentation.add(node);
        }
        else {
            //-- add to parent AnyNode
            ((AnyNode)_nodes.peek()).addChild(node);
        }
    } //-- endElement

    public void characters(char[] ch, int start, int length)
        throws XMLException
    {
        //-- Do delagation if necessary
        AnyNode text = new AnyNode(AnyNode.TEXT,
                                   null,  //-- no local name for text nodes
                                   null,  //-- no prefix
                                   null,  //-- no namespace
                                   new String(ch, start, length));
                                  
        if (!_nodes.isEmpty()) {
            AnyNode parent = (AnyNode)_nodes.peek();
            parent.addChild(text);
        }
        else {
            _documentation.add(text);
        }
       
    } //-- characters

} //-- DocumentationUnmarshaller

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