org.h2gis.drivers.geojson.GeoJsonDriverFunction Maven / Gradle / Ivy

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Add H2 read/write support for file formats such as ESRI shape file

There is a newer version: 1.2.4

/**
 * H2GIS is a library that brings spatial support to the H2 Database Engine
 * .
 *
 * H2GIS is distributed under GPL 3 license. It is produced by CNRS
 * .
 *
 * H2GIS 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.
 *
 * H2GIS 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
 * H2GIS. If not, see .
 *
 * For more information, please consult: 
 * or contact directly: info_at_h2gis.org
 */
package org.h2gis.drivers.geojson;

import org.h2gis.h2spatialapi.DriverFunction;
import org.h2gis.h2spatialapi.ProgressVisitor;
import org.h2gis.utilities.JDBCUtilities;

import java.io.File;
import java.io.IOException;
import java.sql.Connection;
import java.sql.SQLException;

/**
 * GeoJSON driver to import a GeoJSON file and export a spatial table in a
 * GeoJSON 1.0 file.
 * 
 * @author Erwan Bocher
 */
public class GeoJsonDriverFunction implements DriverFunction {

    @Override
    public IMPORT_DRIVER_TYPE getImportDriverType() {
        return IMPORT_DRIVER_TYPE.COPY;
    }

    @Override
    public String[] getImportFormats() {
        return new String[]{"geojson"};
    }

    @Override
    public String[] getExportFormats() {
        return new String[]{"geojson"};
    }

    @Override
    public String getFormatDescription(String format) {
        if (format.equalsIgnoreCase("geojson")) {
            return "GeoJSON 1.0";
        } else {
            return "";
        }
    }

    @Override
    public void exportTable(Connection connection, String tableReference, File fileName, ProgressVisitor progress) throws SQLException, IOException {
        int recordCount = JDBCUtilities.getRowCount(connection, tableReference);
        ProgressVisitor copyProgress = progress.subProcess(recordCount);       
        GeoJsonWriteDriver geoJsonDriver = new GeoJsonWriteDriver(connection, tableReference, fileName);
        geoJsonDriver.write(copyProgress);
    }

    @Override
    public void importFile(Connection connection, String tableReference, File fileName, ProgressVisitor progress) throws SQLException, IOException {
        GeoJsonReaderDriver geoJsonReaderDriver = new GeoJsonReaderDriver(connection, fileName);
        geoJsonReaderDriver.read(progress, tableReference);
    }
}