001/*
002 *  Copyright (c) 2022-2025, 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 org.apache.ibatis.type.BaseTypeHandler;
019import org.apache.ibatis.type.JdbcType;
020
021import java.sql.CallableStatement;
022import java.sql.PreparedStatement;
023import java.sql.ResultSet;
024import java.sql.SQLException;
025import java.util.Arrays;
026import java.util.List;
027
028
029/**
030 * @author michael
031 */
032public class CommaSplitTypeHandler extends BaseTypeHandler<List<String>> {
033
034    @Override
035    public void setNonNullParameter(PreparedStatement ps, int i, List<String> parameter, JdbcType jdbcType) throws SQLException {
036        if (parameter != null) {
037            ps.setString(i, String.join(",", parameter));
038        } else {
039            ps.setNull(i, jdbcType.TYPE_CODE);
040        }
041    }
042
043    @Override
044    public List<String> getNullableResult(ResultSet rs, String columnName) throws SQLException {
045        return splitByComma(rs.getString(columnName));
046    }
047
048    @Override
049    public List<String> getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
050        return splitByComma(rs.getString(columnIndex));
051    }
052
053    @Override
054    public List<String> getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
055        return splitByComma(cs.getString(columnIndex));
056    }
057
058    private List<String> splitByComma(String string) {
059        if (string == null || string.isEmpty()) {
060            return null;
061        }
062        return Arrays.asList(string.split(","));
063    }
064
065}