/**
* Decode the object into a {@code Geometry}
*
* @param object The object to decode
* @return The {@code Geometry}
*/
public static Geometry from(Object object) {
if (object == null) {
return null;
}
try {
if (object instanceof com.vividsolutions.jts.geom.Geometry) {
return JTS.from((com.vividsolutions.jts.geom.Geometry) object);
}
final WkbDecoder decoder = Wkb.newDecoder(Wkb.Dialect.POSTGIS_EWKB_1);
if (object instanceof Blob) {
return decoder.decode(toByteBuffer((Blob) object));
} else if (object instanceof byte[]) {
return decoder.decode(ByteBuffer.from((byte[]) object));
} else if (object instanceof com.vividsolutions.jts.geom.Envelope) {
return toPolygon(JTS.from((com.vividsolutions.jts.geom.Envelope) object));
} else {
throw new IllegalArgumentException(
"Can't convert database object of type " + object.getClass().getCanonicalName());
}
} catch (Exception e) {
LOGGER.warn("Could not convert database object to a Geometry.");
throw new HibernateException(e);
}
}
private static ByteBuffer toByteBuffer(Blob blob) {
final ByteArrayOutputStream baos = new ByteArrayOutputStream();
final byte[] buf = new byte[1024];
InputStream in = null;
try {
in = blob.getBinaryStream();
int n = 0;
while ((n = in.read(buf)) >= 0) {
baos.write(buf, 0, n);
}
} catch (Exception e) {
LOGGER.warn("Could not convert database BLOB object to binary stream.", e);
} finally {
try {
if (in != null) {
in.close();
}
} catch (IOException e) {
LOGGER.warn("Could not close binary stream.");
}
}
return ByteBuffer.from(baos.toByteArray());
}
