/*
* Copyright 2014, Mysema Ltd
*
* 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://www.apache.org/licenses/LICENSE-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.mysema.query.sql.spatial;
import javax.annotation.Nullable;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import com.mysema.query.sql.types.AbstractType;
import org.geolatte.geom.ByteBuffer;
import org.geolatte.geom.ByteOrder;
import org.geolatte.geom.Geometry;
import org.geolatte.geom.codec.Wkb;
import org.geolatte.geom.codec.WkbDecoder;
import org.geolatte.geom.codec.WkbEncoder;
import org.geolatte.geom.codec.Wkt;
/**
* @author tiwe
*
*/
public class GeoDBWkbType extends AbstractType<Geometry> {
public static final GeoDBWkbType DEFAULT = new GeoDBWkbType();
private final ByteOrder byteOrder = ByteOrder.NDR;
public GeoDBWkbType() {
super(Types.BLOB);
}
@Override
public Class<Geometry> getReturnedClass() {
return Geometry.class;
}
@Override
@Nullable
public Geometry getValue(ResultSet rs, int startIndex) throws SQLException {
byte[] bytes = rs.getBytes(startIndex);
if (bytes != null) {
byte[] wkb;
if (bytes[0] != 0 && bytes[0] != 1) { // decodes EWKB
wkb = new byte[bytes.length - 32];
System.arraycopy(bytes, 32, wkb, 0, wkb.length);
} else {
wkb = bytes;
}
WkbDecoder decoder = Wkb.newDecoder(Wkb.Dialect.POSTGIS_EWKB_1);
return decoder.decode(ByteBuffer.from(wkb));
} else {
return null;
}
}
@Override
public void setValue(PreparedStatement st, int startIndex, Geometry value) throws SQLException {
WkbEncoder encoder = Wkb.newEncoder(Wkb.Dialect.POSTGIS_EWKB_1);
ByteBuffer buffer = encoder.encode(value, byteOrder);
st.setBytes(startIndex, buffer.toByteArray());
}
@Override
public String getLiteral(Geometry geometry) {
String str = Wkt.newEncoder(Wkt.Dialect.POSTGIS_EWKT_1).encode(geometry);
if (geometry.getSRID() > -1) {
return "ST_GeomFromText('" + str + "', " + geometry.getSRID() + ")";
} else {
return "ST_GeomFromText('" + str + "')";
}
}
}