| /* |
| * Copyright (c) 2009-2012, 2015, 2016 Eike Stepper (Loehne, Germany) 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 - initial API and implementation |
| * Eike Stepper - maintenance |
| */ |
| package org.eclipse.emf.cdo.server.internal.hibernate.tuplizer; |
| |
| import org.eclipse.emf.common.util.Enumerator; |
| |
| import org.hibernate.HibernateException; |
| import org.hibernate.engine.spi.SessionImplementor; |
| |
| import java.sql.PreparedStatement; |
| import java.sql.ResultSet; |
| import java.sql.SQLException; |
| import java.sql.Types; |
| import java.util.HashMap; |
| |
| /** |
| * 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> |
| */ |
| 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, SessionImplementor sessionImplementor, 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 = getEEnum().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, SessionImplementor sessionImplementor) throws HibernateException, SQLException |
| { |
| if (value == null) |
| { |
| st.setNull(index, Types.INTEGER); |
| } |
| else if (value instanceof Integer) |
| { |
| st.setInt(index, (Integer)value); |
| } |
| else |
| { |
| st.setInt(index, ((Enumerator)value).getValue()); |
| } |
| } |
| |
| /** An enum is stored in one varchar */ |
| @Override |
| public int[] sqlTypes() |
| { |
| return SQL_TYPES; |
| } |
| } |