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/**
* <copyright>
*
* Copyright (c) 2005, 2006, 2007, 2008 Springsite BV (The Netherlands) and others
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Martin Taal
* </copyright>
*
* $Id: CDOENumIntegerType.java,v 1.1 2009-03-19 17:20:14 mtaal Exp $
*/
package org.eclipse.emf.cdo.server.internal.hibernate.tuplizer;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import java.util.HashMap;
import org.eclipse.emf.common.util.Enumerator;
import org.hibernate.HibernateException;
/**
* Implements the EMF UserType for an Enum in a dynamic model, for an integer field.
*
* @author <a href="mailto:mtaal@elver.org">Martin Taal</a>
* @version $Revision: 1.1 $ $Date: 2009-03-19 17:20:14 $
*/
public class CDOENumIntegerType extends CDOENumStringType {
/** The sql types used for enums */
private static final int[] SQL_TYPES = new int[] { Types.INTEGER };
/** Hashmap with string to enum mappings */
private final HashMap<Integer, Enumerator> localCache = new HashMap<Integer, Enumerator>();
/*
* (non-Javadoc)
*
* @see org.hibernate.usertype.UserType#nullSafeGet(java.sql.ResultSet, java.lang.String[],
* java.lang.Object)
*/
@Override
public Object nullSafeGet(ResultSet rs, String[] names, Object owner) throws HibernateException, SQLException {
final int value = rs.getInt(names[0]);
if (rs.wasNull()) {
return null;
}
Integer objValue = new Integer(value);
Enumerator enumValue = localCache.get(objValue);
if (enumValue != null) {
return enumValue;
}
enumValue = enumInstance.getEEnumLiteral(objValue.intValue());
localCache.put(objValue, enumValue);
return enumValue;
}
/*
* (non-Javadoc)
*
* @see org.hibernate.usertype.UserType#nullSafeSet(java.sql.PreparedStatement,
* java.lang.Object, int)
*/
@Override
public void nullSafeSet(PreparedStatement st, Object value, int index) throws HibernateException, SQLException {
if (value == null) {
st.setNull(index, Types.INTEGER);
} else {
st.setInt(index, ((Enumerator) value).getValue());
}
}
/** An enum is stored in one varchar */
@Override
public int[] sqlTypes() {
return SQL_TYPES;
}
}
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