schemadomparser.java

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/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 2001-2003 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 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 end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Xerces" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact [e-mail].
 *
 * 5. Products derived from this software may not be called "Apache",
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 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 2001, International
 * Business Machines, Inc., http://www.apache.org.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package com.sun.org.apache.xerces.internal.impl.xs.opti;


import com.sun.org.apache.xerces.internal.impl.XMLErrorReporter;
import com.sun.org.apache.xerces.internal.impl.xs.SchemaSymbols;
import com.sun.org.apache.xerces.internal.impl.xs.XSMessageFormatter;
import com.sun.org.apache.xerces.internal.util.XMLChar;
import com.sun.org.apache.xerces.internal.xni.Augmentations;
import com.sun.org.apache.xerces.internal.xni.NamespaceContext;
import com.sun.org.apache.xerces.internal.xni.QName;
import com.sun.org.apache.xerces.internal.xni.XMLAttributes;
import com.sun.org.apache.xerces.internal.xni.XMLLocator;
import com.sun.org.apache.xerces.internal.xni.XMLString;
import com.sun.org.apache.xerces.internal.xni.XNIException;
import org.w3c.dom.Document;

/**
 * {@link XMLDocumentHandler} that 
 * builds DOM representation for XML Schema documents.
 * 
 * <p>
 * TODO: this class should be better renamed to
 * SchemaDOMBuilder since this class is not a "parser", which is used
 * to imply software that reads raw Unicode and angle brackets.
 * 
 * @author Rahul Srivastava, Sun Microsystems Inc.
 * @author Sandy Gao, IBM
 *
 * @version $Id: SchemaDOMParser.java,v 1.8 2004/04/30 02:42:43 mrglavas Exp $
 */
public class SchemaDOMParser extends DefaultXMLDocumentHandler {

    //
    // Data
    //
    
    // the locator containing line/column information
    protected XMLLocator   fLocator;

    // namespace context, needed for producing
    // representations of annotations
    protected NamespaceContext fNamespaceContext = null;

    SchemaDOM schemaDOM;
   

    //
    // Constructors
    //

    public SchemaDOMParser(XMLErrorReporter errorReporter) {
        fErrorReporter = errorReporter;
    }
    
    // where an annotation element itself begins
    // -1 means not in an annotation's scope
    private int fAnnotationDepth = -1;
    // Where xs:appinfo or xs:documentation starts;
    // -1 means not in the scope of either of the two elements.
    private int fInnerAnnotationDepth = -1;
    // The current element depth
    private int fDepth = -1;
    // Use to report the error when characters are not allowed.
    XMLErrorReporter fErrorReporter;


    //
    // XMLDocumentHandler methods
    //

    public void startDocument(XMLLocator locator, String encoding, 
                              NamespaceContext namespaceContext, Augmentations augs)
        throws XNIException {
        schemaDOM = new SchemaDOM(); 
        fAnnotationDepth = -1;
        fInnerAnnotationDepth = -1;
        fDepth = -1;
        fLocator = locator;
        fNamespaceContext = namespaceContext;
    } // startDocument(XMLLocator,String,NamespaceContext, Augmentations)

    /**
     * The end of the document.
     * @param augs     Additional information that may include infoset augmentations
     *
     * @throws XNIException Thrown by handler to signal an error.
     */
    public void endDocument(Augmentations augs) throws XNIException {
        // To debug the DOM created uncomment the line below
        // schemaDOM.printDOM();
    } // endDocument()


    /**
     * A comment.
     * 
     * @param text   The text in the comment.
     * @param augs   Additional information that may include infoset augmentations
     *               
     * @exception XNIException
     *                   Thrown by application to signal an error.
     */
    public void comment(XMLString text, Augmentations augs) throws XNIException {
        if(fAnnotationDepth > -1) {
            schemaDOM.comment(text);
        }
    }

    /**
     * A processing instruction. Processing instructions consist of a
     * target name and, optionally, text data. The data is only meaningful
     * to the application.
     * <p>
     * Typically, a processing instruction's data will contain a series
     * of pseudo-attributes. These pseudo-attributes follow the form of
     * element attributes but are <strong>not</strong> parsed or presented
     * to the application as anything other than text. The application is
     * responsible for parsing the data.
     * 
     * @param target The target.
     * @param data   The data or null if none specified.
     * @param augs   Additional information that may include infoset augmentations
     *               
     * @exception XNIException
     *                   Thrown by handler to signal an error.
     */
    public void processingInstruction(String target, XMLString data, Augmentations augs)
        throws XNIException {
        if(fAnnotationDepth > -1) {
            schemaDOM.processingInstruction(target, data.toString());
        }
    }

    /**
     * Character content.
     * 
     * @param text   The content.
     * @param augs   Additional information that may include infoset augmentations
     *               
     * @exception XNIException
     *                   Thrown by handler to signal an error.
     */
    public void characters(XMLString text, Augmentations augs) throws XNIException {
        // when it's not within xs:appinfo or xs:documentation
        if (fInnerAnnotationDepth == -1 ) {
            for (int i=text.offset; i<text.offset+text.length; i++) {
                // and there is a non-whitespace character
                if (!XMLChar.isSpace(text.ch[i])) {
                    // the string we saw: starting from the first non-whitespace character.
                    String txt = new String(text.ch, i, text.length+text.offset-i);