/*
* Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project 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
* General Public License or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* <http://www.gnu.org/licenses/> or <http://www.apache.org/licenses/LICENSE-2.0>.
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
* version 3.
*/
package org.smallmind.persistence.orm.hibernate;
import java.io.Serializable;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import java.util.Properties;
import org.hibernate.HibernateException;
import org.hibernate.engine.spi.SharedSessionContractImplementor;
import org.hibernate.usertype.ParameterizedType;
import org.hibernate.usertype.UserType;
public class EnumUserType implements UserType, ParameterizedType {
private Class<Enum> enumClass;
@Override
public void setParameterValues (Properties parameters) {
String enumClassName = parameters.getProperty("enumClassName");
try {
enumClass = (Class<Enum>)Class.forName(enumClassName);
} catch (ClassNotFoundException classNotFoundException) {
throw new HibernateException("Enum class not found", classNotFoundException);
}
}
@Override
public boolean isMutable () {
return false;
}
@Override
public Class returnedClass () {
return enumClass;
}
@Override
public int[] sqlTypes () {
return new int[] {Types.VARCHAR};
}
@Override
public Object assemble (Serializable cached, Object owner) {
return cached;
}
@Override
public Serializable disassemble (Object value) {
return (Enum)value;
}
@Override
public Object deepCopy (Object value) {
return value;
}
@Override
public Object replace (Object original, Object target, Object owner) {
return original;
}
@Override
public int hashCode (Object x) {
return (x == null) ? 0 : x.hashCode();
}
public boolean equals (Object x, Object y)
throws HibernateException {
return x == y;
}
@Override
public Object nullSafeGet (ResultSet rs, String[] names, SharedSessionContractImplementor session, Object owner)
throws HibernateException, SQLException {
String name = rs.getString(names[0]);
return rs.wasNull() ? null : Enum.valueOf(enumClass, name);
}
@Override
public void nullSafeSet (PreparedStatement st, Object value, int index, SharedSessionContractImplementor session)
throws HibernateException, SQLException {
if (value == null) {
st.setNull(index, Types.VARCHAR);
} else {
st.setString(index, ((Enum)value).name());
}
}
}