/*
* GeometryType.java
*
* PostGIS extension for PostgreSQL JDBC driver - EJB3 Tutorial
*
* (C) 2006 Norman Barker <norman.barker@gmail.com>
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 2.1 of the License.
*
* This library 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 Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA or visit the web at
* http://www.gnu.org.
*
* $Id$
*/
package org.postgis.hibernate;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.Serializable;
import java.sql.Blob;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import org.hibernate.HibernateException;
import org.hibernate.usertype.UserType;
import java.io.InputStream;
import org.postgis.Geometry;
import org.postgis.binary.BinaryParser;
import org.postgis.binary.BinaryWriter;
/**
* @author nbarker $date 16/8/06
*/
public class GeometryType implements UserType {
private static final int[] SQL_TYPES = { Types.BLOB };
/**
* @see org.hibernate.usertype.UserType#deepCopy(java.lang.Object)
*/
public Object deepCopy(Object value) throws HibernateException {
return value;
}
/**
* @see org.hibernate.usertype.UserType#equals(java.lang.Object, java.lang.Object)
*/
public boolean equals(Object x, Object y) throws HibernateException {
if (x == y) {
return true;
} else if (x == null || y == null) {
return false;
} else {
return x.equals(y);
}
}
/**
* @see org.hibernate.usertype.UserType#hashCode(java.lang.Object)
*/
public int hashCode(Object arg0) throws HibernateException {
// TODO Auto-generated method stub
return 0;
}
/**
* @see org.hibernate.usertype.UserType#isMutable()
*/
public boolean isMutable() {
return false;
}
/**)
* @see org.hibernate.usertype.UserType#nullSafeGet(java.sql.ResultSet, java.lang.String[], java.lang.Object)
*/
public Object nullSafeGet(ResultSet resultSet,
String[] names, Object owner) throws HibernateException, SQLException {
Geometry result = null;
String geom = resultSet.getString(names[0]);
if(geom != null ) {
BinaryParser parser = new BinaryParser();
result = parser.parse(geom);
}
return result;
}
/**
* @see org.hibernate.usertype.UserType#nullSafeSet(java.sql.PreparedStatement, java.lang.Object, int)
*/
public void nullSafeSet(PreparedStatement statement,
Object value, int index) throws HibernateException, SQLException {
if (value == null) {
statement.setBytes(index, null);
} else {
BinaryWriter bw = new BinaryWriter();
byte[] bytes = bw.writeBinary((Geometry)value);
statement.setBytes(index, bytes);
}
}
/* (non-Javadoc)
* @see org.hibernate.usertype.UserType#replace(java.lang.Object, java.lang.Object, java.lang.Object)
*/
public Object replace(Object original, Object target,
Object owner) throws HibernateException {
return original;
}
/* (non-Javadoc)
* @see org.hibernate.usertype.UserType#returnedClass()
*/
public Class returnedClass() {
return Geometry.class;
}
/**
* @see org.hibernate.usertype.UserType#sqlTypes()
*/
public int[] sqlTypes() {
return GeometryType.SQL_TYPES;
}
/**
* @see org.hibernate.usertype.UserType#assemble(java.io.Serializable, java.lang.Object)
*/
public Object assemble(Serializable cached, Object owner) throws HibernateException {
return cached;
}
/**
* @see org.hibernate.usertype.UserType#disassemble(java.lang.Object)
*/
public Serializable disassemble(Object value) throws HibernateException {
return (Serializable)value;
}
}