package com.nq.utils;
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import org.apache.ibatis.type.JdbcType;
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import org.apache.ibatis.type.MappedJdbcTypes;
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import org.apache.ibatis.type.MappedTypes;
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import org.apache.ibatis.type.TypeHandler;
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import java.sql.CallableStatement;
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.util.Arrays;
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import java.util.List;
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@MappedJdbcTypes(JdbcType.VARCHAR)
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@MappedTypes({List.class})
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/**
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* mybatis类型转换器 将数据库重新来的varchar类型用‘ ， ’分隔的字符串转为List<String>
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*/
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public class ListTypeHandler implements TypeHandler<List<String>> {
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@Override
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public void setParameter(PreparedStatement ps, int i, List<String> parameter, JdbcType jdbcType) throws SQLException {
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String hobbys = StringUtil.join(parameter, ",");
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try {
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ps.setString(i, hobbys);
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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@Override
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public List<String> getResult(CallableStatement cs, int columnIndex) throws SQLException {
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String hobbys = cs.getString(columnIndex);
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return Arrays.asList(hobbys.split(","));
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}
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@Override
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public List<String> getResult(ResultSet rs, int columnIndex) throws SQLException {
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return Arrays.asList(rs.getString(columnIndex).split(","));
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}
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@Override
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public List<String> getResult(ResultSet rs, String columnName) throws SQLException {
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return Arrays.asList(rs.getString(columnName).split(","));
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}
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}
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