com.vss.ogc.types.WktGzSerializer.java Source code

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Here is the source code for com.vss.ogc.types.WktGzSerializer.java

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/*
 * Copyright 2013 by TalkingTrends (Amsterdam, The Netherlands)
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 * 
 * http://opensahara.com/licenses/apache-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package com.vss.ogc.types;

import org.apache.commons.codec.binary.Base64;
import org.openrdf.model.URI;

import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.io.WKTWriter;
import com.vss.ogc.indexing.GeoConstants;
import com.vss.ogc.types.exception.InvalidGeometryException;

public final class WktGzSerializer extends AbstractGeoSerializer {
    public static final WktGzSerializer INTANCE = new WktGzSerializer();

    private WktGzSerializer() {
    }

    @Override
    public String toLiteral(Geometry geometry) {
        return new String(Base64.encodeBase64(AbstractGeo.gzip(new WKTWriter().write(geometry).getBytes())));
    }

    @Override
    public Geometry toGeometry(String value) throws InvalidGeometryException {
        return value.isEmpty() ? GeoConvert.getEmptyGeometry()
                : GeoConvert.wktToGeometry(new String(AbstractGeo.gunzip(Base64.decodeBase64(value.getBytes()))));
    }

    @Override
    public AbstractGeo toGeo(String value) {
        return new GeoWktGz(value);
    }

    @Override
    public URI getDatatype() {
        return GeoConstants.XMLSCHEMA_SPATIAL_TEXTGZ;
    }

    @Override
    public Class<? extends AbstractGeo> getGeoClass() {
        return GeoWktGz.class;
    }
}