Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 3

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.utils.xmlViewer;

import java.io.ByteArrayInputStream;

import java.io.IOException;

import java.util.ArrayList;

import org.xml.sax.Attributes;

import org.xml.sax.ContentHandler;

import org.xml.sax.InputSource;

import org.xml.sax.Locator;

import org.xml.sax.SAXException;

import org.xml.sax.XMLReader;

import org.xml.sax.helpers.XMLReaderFactory;

/**

 * XMLContent al que se le pueden a?adir varios ficheros XML en forma de String

 *

 * @author Fernando Gonz?lez Cort?s

 */

public class MultipleXMLContent implements XMLContent {

    private ContentHandler handler;

    private ArrayList xmls = new ArrayList();

    /**

     * A?ade un fichero XML al modelo

     *

     * @param xmlContent String con el contenido xml

     */

    public void addXML(String xmlContent) {

        xmls.add(xmlContent);

    }

    /**

     * @see org.gvsig.utils.xmlViewer.XMLContent#setContentHandler(org.xml.sax.ContentHandler)

     */

    public void setContentHandler(ContentHandler handler) {

        this.handler = handler;

    }

    /**

     * Genera un evento de startDocument, luego genera todos los eventos de los

     * XML que han sido a?adidos a la clase filtrando los startDocument y

     * endDocument de cada uno de  ellos y luego genera un endDocument

     *

     * @see org.gvsig.utils.xmlViewer.XMLContent#parse()

     */

    public void parse() throws SAXException {

           XMLReader reader;

        //Empieza el documento

        handler.startDocument();

        for (int i = 0; i < xmls.size(); i++) {

            String text = (String) xmls.get(i);

            //Handler que filtra los eventos de startDocument y end Document

            FilterHandler filter = new FilterHandler();

            filter.setHandler(handler);

            //Generamos los eventos del XML i-?simo

            reader = XMLReaderFactory.createXMLReader();

            reader.setFeature("http://xml.org/sax/features/namespaces", false);

            reader.setContentHandler(filter);

            if (text == null) {

                continue;

            }

            try {

                reader.parse(new InputSource(

                        new ByteArrayInputStream(text.getBytes())));

            } catch (IOException e) {

                //Una IO exception en un array de bytes???

            }

        }

        //Finalizamos el documento

        handler.endDocument();

    }

    /**

     * Manejador que delega en otro manejador todos los eventos excepto el

     * startDocument y el endDocument. "Filtra" los eventos de startDocument y

     * endDocument

     *

     * @author Fernando Gonz?lez Cort?s

     */

    public class FilterHandler implements ContentHandler {

        private ContentHandler handler;

        /**

         * Establece el handler al que se le van a filtrar los eventos de

         * comienzo y fin de documento

         *

         * @param handler The handler to set.

         */

        public void setHandler(ContentHandler handler) {

            this.handler = handler;

        }

        /**

         * DOCUMENT ME!

         *

         * @param arg0

         * @param arg1

         * @param arg2

         *

         * @throws SAXException

         */

        public void characters(char[] arg0, int arg1, int arg2)

            throws SAXException {

            handler.characters(arg0, arg1, arg2);

        }

        /**

         * DOCUMENT ME!

         *

         * @throws SAXException

         */

        public void endDocument() throws SAXException {

        }

        /**

         * DOCUMENT ME!

         *

         * @param arg0

         * @param arg1

         * @param arg2

         *

         * @throws SAXException

         */

        public void endElement(String arg0, String arg1, String arg2)

            throws SAXException {

            handler.endElement(arg0, arg1, arg2);

        }

        /**

         * DOCUMENT ME!

         *

         * @param arg0

         *

         * @throws SAXException

         */

        public void endPrefixMapping(String arg0) throws SAXException {

            handler.endPrefixMapping(arg0);

        }

        /**

         * DOCUMENT ME!

         *

         * @param arg0

         * @param arg1

         * @param arg2

         *

         * @throws SAXException

         */

        public void ignorableWhitespace(char[] arg0, int arg1, int arg2)

            throws SAXException {

            handler.ignorableWhitespace(arg0, arg1, arg2);

        }

        /**

         * DOCUMENT ME!

         *

         * @param arg0

         * @param arg1

         *

         * @throws SAXException

         */

        public void processingInstruction(String arg0, String arg1)

            throws SAXException {

            handler.processingInstruction(arg0, arg1);

        }

        /**

         * DOCUMENT ME!

         *

         * @param arg0

         */

        public void setDocumentLocator(Locator arg0) {

            handler.setDocumentLocator(arg0);

        }

        /**

         * DOCUMENT ME!

         *

         * @param arg0

         *

         * @throws SAXException

         */

        public void skippedEntity(String arg0) throws SAXException {

            handler.skippedEntity(arg0);

        }

        /**

         * DOCUMENT ME!

         *

         * @throws SAXException

         */

        public void startDocument() throws SAXException {

        }

        /**

         * DOCUMENT ME!

         *

         * @param arg0

         * @param arg1

         * @param arg2

         * @param arg3

         *

         * @throws SAXException

         */

        public void startElement(String arg0, String arg1, String arg2,

            Attributes arg3) throws SAXException {

            handler.startElement(arg0, arg1, arg2, arg3);

        }

        /**

         * DOCUMENT ME!

         *

         * @param arg0

         * @param arg1

         *

         * @throws SAXException

         */

        public void startPrefixMapping(String arg0, String arg1)

            throws SAXException {

            handler.startPrefixMapping(arg0, arg1);

        }

    }

}