/**
* The contents of this file are subject to the OpenMRS Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://license.openmrs.org
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
* License for the specific language governing rights and limitations
* under the License.
*
* Copyright (C) OpenMRS, LLC. All Rights Reserved.
*/
package org.openmrs.util;
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.apache.commons.lang.StringUtils;
import org.hibernate.HibernateException;
import org.hibernate.MappingException;
import org.hibernate.usertype.ParameterizedType;
import org.hibernate.usertype.UserType;
/**
* This is intended to be a temporary utility class until enums are handled properly in Hibernate:
* http://community.jboss.org/wiki/Java5EnumUserType
* http://docs.jboss.org/hibernate/stable/core/reference/en/html_single/#inheritance
*/
public class HibernateEnumType implements UserType, ParameterizedType {
private static final int[] SQL_TYPES = { Types.VARCHAR };
private Class clazz = null;
public void setParameterValues(Properties params) {
String enumClassName = params.getProperty("enumClassName");
if (enumClassName == null) {
throw new MappingException("enumClassName parameter not specified");
}
try {
this.clazz = Class.forName(enumClassName);
}
catch (ClassNotFoundException e) {
throw new MappingException("enumClass " + enumClassName + " not found", e);
}
}
public int[] sqlTypes() {
return SQL_TYPES;
}
public Class<?> returnedClass() {
return clazz;
}
@SuppressWarnings("unchecked")
public Object nullSafeGet(ResultSet resultSet, String[] names, Object owner) throws HibernateException, SQLException {
String name = resultSet.getString(names[0]);
Object result = null;
if (!resultSet.wasNull() && !StringUtils.isBlank(name)) {
result = Enum.valueOf(clazz, name);
}
return result;
}
public void nullSafeSet(PreparedStatement preparedStatement, Object value, int index) throws HibernateException,
SQLException {
if (null == value) {
preparedStatement.setNull(index, Types.VARCHAR);
} else {
preparedStatement.setString(index, ((Enum) value).name());
}
}
public Object deepCopy(Object value) throws HibernateException {
return value;
}
public boolean isMutable() {
return false;
}
public Object assemble(Serializable cached, Object owner) throws HibernateException {
return cached;
}
public Serializable disassemble(Object value) throws HibernateException {
return (Serializable) value;
}
public Object replace(Object original, Object target, Object owner) throws HibernateException {
return original;
}
public int hashCode(Object x) throws HibernateException {
return x.hashCode();
}
public boolean equals(Object x, Object y) throws HibernateException {
if (x == y)
return true;
if (null == x || null == y)
return false;
return x.equals(y);
}
}