/*
* Hibernate OGM, Domain model persistence for NoSQL datastores
*
* 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.ogm.type.descriptor.impl;
import org.hibernate.ogm.model.spi.Tuple;
import org.hibernate.ogm.util.impl.Log;
import org.hibernate.ogm.util.impl.LoggerFactory;
import org.hibernate.type.descriptor.java.JavaTypeDescriptor;
/**
* @author Nicolas Helleringer
*/
public class StringMappedGridExtractor<J> implements GridValueExtractor<J> {
private static final Log log = LoggerFactory.make();
private final GridTypeDescriptor gridTypeDescriptor;
private final JavaTypeDescriptor<J> javaTypeDescriptor;
public StringMappedGridExtractor( JavaTypeDescriptor<J> javaTypeDescriptor, GridTypeDescriptor gridTypeDescriptor ) {
this.gridTypeDescriptor = gridTypeDescriptor;
this.javaTypeDescriptor = javaTypeDescriptor;
}
@Override
public J extract(Tuple resultset, String name) {
@SuppressWarnings( "unchecked" )
final String result = (String) resultset.get( name );
if ( result == null ) {
log.tracef( "found [null] as column [$s]", name );
return null;
}
else {
final J resultJ = javaTypeDescriptor.fromString( result );
if ( log.isTraceEnabled() ) {
log.tracef( "found [$s] as column [$s]", javaTypeDescriptor.extractLoggableRepresentation( resultJ ), name );
}
return resultJ;
}
}
}