Application: gvSIG desktop » gvSIG raster

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 *

 * 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 2

 * 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.

 *

 */

package org.gvsig.raster.impl.store.serializer;

import java.io.File;

import java.io.IOException;

import java.io.Reader;

import java.io.StringReader;

import java.util.ArrayList;

import java.util.List;

import org.gvsig.fmap.dal.coverage.exception.ParsingException;

import org.gvsig.raster.impl.store.rmf.ClassSerializer;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.extensionpoint.ExtensionPoint;

import org.gvsig.tools.extensionpoint.ExtensionPointManager;

import org.kxml2.io.KXmlParser;

import org.xmlpull.v1.XmlPullParserException;

/**

 * <P>

 * This class converts to XML the path of a file of Regions of interest.

 * </P>

 *

 * @author Nacho Brodin (nachobrodin@gmail.com)   

 */

public class ROIFileRmfSerializer extends ClassSerializer {

        private final String  MAIN_TAG   = "ROI";

        private List<File>    fileList   = null;

        /**

         * Registra ProjectionRmfSerializer en los puntos de extension de Serializer

         */

        public static void register() {

                ExtensionPointManager extensionPoints = ToolsLocator.getExtensionPointManager();

                ExtensionPoint point = extensionPoints.get("Serializer");

                point.append("ROI", "", ROIFileRmfSerializer.class);

        }

        public ROIFileRmfSerializer(List<File> file) {

                this.fileList = file;

        }

        /**

         * Constructor.

         */

        public ROIFileRmfSerializer() {

        }

        public String getMainTag() {

                return MAIN_TAG;

        }

        public Object getResult() {

                return fileList;

        }

        public void read(String xml) throws ParsingException {

                KXmlParser parser = new KXmlParser();

                Reader reader = new StringReader(xml);

                try {

                        parser.setInput(reader);

                } catch (XmlPullParserException e) {

                        throw new ParsingException(xml);

                }

                try {

                        int tag = parser.nextTag();

                        if (parser.getEventType() != KXmlParser.END_DOCUMENT) {

                                parser.require(KXmlParser.START_TAG, null, MAIN_TAG);

                                while (tag != KXmlParser.END_DOCUMENT) {

                                        switch (tag) {

                                                case KXmlParser.START_TAG:

                                                        if (parser.getName().equals("ROIFile")) {

                                                                for (int i = 0; i < parser.getAttributeCount(); i++) {

                                                                        if (parser.getAttributeName(i).equals("value")) {

                                                                                if(fileList == null)

                                                                                        fileList = new ArrayList<File>();

                                                                                fileList.add(new File((String) parser.getAttributeValue(i)));

                                                                        }

                                                                }

                                                        }

                                        }

                                        tag = parser.next();

                                }

                        }

                        reader.close();

                } catch (XmlPullParserException e) {

                        throw new ParsingException(xml);

                } catch (IOException e) {

                        throw new ParsingException(xml);

                }

        }

        public String write() throws IOException {

                if (fileList == null || fileList.size() == 0)

                        return "";

                StringBuffer b = new StringBuffer();

                b.append("<" + MAIN_TAG + ">\n");

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

                        if(fileList.get(i) != null) {

                                b.append("\t<ROIFile");

                                b.append(" value=\"" + fileList.get(i).getAbsolutePath() + "\"/>\n");

                                b.append("</" + MAIN_TAG + ">\n");

                        }

                }

                return b.toString();

        }

}