sourcecode/server/tools/src/main/java/com/nuliji/tools/mybatis/handler/IntegerArrayHandler.java

package com.nuliji.tools.mybatis.handler;

import org.apache.ibatis.type.BaseTypeHandler;
import org.apache.ibatis.type.JdbcType;
import org.apache.ibatis.type.MappedJdbcTypes;
import org.apache.ibatis.type.MappedTypes;

import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

@MappedTypes(int[].class)
@MappedJdbcTypes(value = {JdbcType.VARCHAR}, includeNullJdbcType = true)
public class IntegerArrayHandler extends BaseTypeHandler<int[]> {

    @Override
    public void setNonNullParameter(PreparedStatement ps, int i, int[] parameter, JdbcType jdbcType) throws SQLException {
        List<String> list = new ArrayList<>();
        for (Integer item : parameter) {
            list.add(String.valueOf(item));
        }
        ps.setString(i, String.join(",", list));
    }

    @Override
    public int[] getNullableResult(ResultSet rs, String columnName) throws SQLException {
        String str = rs.getString(columnName);
        if (rs.wasNull())
            return null;
        if (str.isEmpty()) return new int[0];
        return Arrays.stream(str.split(",")).mapToInt(Integer::valueOf).toArray();
    }

    @Override
    public int[] getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
        String str = rs.getString(columnIndex);
        if (rs.wasNull())
            return null;
        if (str.isEmpty()) return new int[0];
        return Arrays.stream(str.split(",")).mapToInt(Integer::valueOf).toArray();
    }

    @Override
    public int[] getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
        String str = cs.getString(columnIndex);
        if (cs.wasNull())
            return null;
        if (str.isEmpty()) return new int[0];
        return Arrays.stream(str.split(",")).mapToInt(Integer::valueOf).toArray();
    }
}