/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */

package org.hibernate.spatial.dialect.h2geodb;

import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;

import org.geolatte.geom.Geometry;

import org.hibernate.type.descriptor.ValueBinder;
import org.hibernate.type.descriptor.ValueExtractor;
import org.hibernate.type.descriptor.WrapperOptions;
import org.hibernate.type.descriptor.java.JavaTypeDescriptor;
import org.hibernate.type.descriptor.sql.BasicBinder;
import org.hibernate.type.descriptor.sql.BasicExtractor;
import org.hibernate.type.descriptor.sql.SqlTypeDescriptor;

/**
 * Descriptor for GeoDB Geometries.
 *
 * @author Karel Maesen, Geovise BVBA
 */
public class GeoDBGeometryTypeDescriptor implements SqlTypeDescriptor {

	/**
	 * An instance of this Descriptor
	 */
	public static final GeoDBGeometryTypeDescriptor INSTANCE = new GeoDBGeometryTypeDescriptor();

	@Override
	public int getSqlType() {
		return Types.ARRAY;
	}

	@Override
	public boolean canBeRemapped() {
		return false;
	}

	@Override
	public <X> ValueBinder<X> getBinder(final JavaTypeDescriptor<X> javaTypeDescriptor) {
		return new BasicBinder<X>( javaTypeDescriptor, this ) {
			@Override
			protected void doBind(PreparedStatement st, X value, int index, WrapperOptions options)
					throws SQLException {
				final Geometry geometry = getJavaDescriptor().unwrap( value, Geometry.class, options );
				st.setBytes( index, GeoDbWkb.to( geometry ) );
			}

			@Override
			protected void doBind(CallableStatement st, X value, String name, WrapperOptions options)
					throws SQLException {
				final Geometry geometry = getJavaDescriptor().unwrap( value, Geometry.class, options );
				st.setBytes( name, GeoDbWkb.to( geometry ) );
			}
		};
	}

	@Override
	public <X> ValueExtractor<X> getExtractor(final JavaTypeDescriptor<X> javaTypeDescriptor) {
		return new BasicExtractor<X>( javaTypeDescriptor, this ) {

			@Override
			protected X doExtract(ResultSet rs, String name, WrapperOptions options) throws SQLException {
				return getJavaDescriptor().wrap( GeoDbWkb.from( rs.getObject( name ) ), options );
			}

			@Override
			protected X doExtract(CallableStatement statement, int index, WrapperOptions options) throws SQLException {
				return getJavaDescriptor().wrap( GeoDbWkb.from( statement.getObject( index ) ), options );
			}

			@Override
			protected X doExtract(CallableStatement statement, String name, WrapperOptions options)
					throws SQLException {
				return getJavaDescriptor().wrap( GeoDbWkb.from( statement.getObject( name ) ), options );
			}
		};
	}


}
