001/*
002 *  Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
003 *  <p>
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *  <p>
008 *  http://www.apache.org/licenses/LICENSE-2.0
009 *  <p>
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package com.mybatisflex.core.handler;
017
018import com.mybatisflex.core.util.EnumWrapper;
019import org.apache.ibatis.type.BaseTypeHandler;
020import org.apache.ibatis.type.JdbcType;
021
022import java.sql.CallableStatement;
023import java.sql.PreparedStatement;
024import java.sql.ResultSet;
025import java.sql.SQLException;
026
027public class FlexEnumTypeHandler<E extends Enum<E>> extends BaseTypeHandler<E> {
028
029    private EnumWrapper<E> enumWrapper;
030
031    public FlexEnumTypeHandler(Class<E> enumClass) {
032        enumWrapper = EnumWrapper.of(enumClass);
033    }
034
035
036    @Override
037    public void setNonNullParameter(PreparedStatement ps, int i, E parameter, JdbcType jdbcType) throws SQLException {
038        Object value = enumWrapper.getEnumValue(parameter);
039        if (jdbcType == null) {
040            ps.setObject(i, value);
041        } else {
042            ps.setObject(i, value, jdbcType.TYPE_CODE);
043        }
044    }
045
046    @Override
047    public E getNullableResult(ResultSet rs, String columnName) throws SQLException {
048        Object value = rs.getObject(columnName, enumWrapper.getPropertyType());
049        if (null == value && rs.wasNull()) {
050            return null;
051        }
052        return enumWrapper.getEnum(value);
053    }
054
055
056    @Override
057    public E getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
058        Object value = rs.getObject(columnIndex, enumWrapper.getPropertyType());
059        if (null == value && rs.wasNull()) {
060            return null;
061        }
062        return enumWrapper.getEnum(value);
063    }
064
065
066    @Override
067    public E getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
068        Object value = cs.getObject(columnIndex, enumWrapper.getPropertyType());
069        if (null == value && cs.wasNull()) {
070            return null;
071        }
072        return enumWrapper.getEnum(value);
073    }
074
075
076}