package com.dy.common.mybatis.envm;

import cn.hutool.core.lang.Assert;
import org.apache.ibatis.type.BaseTypeHandler;
import org.apache.ibatis.type.JdbcType;

import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class EnumCodeTypeHandler<E extends Enum<E> & IEnum> extends BaseTypeHandler<E>{

    private final Class<E> type;

    public EnumCodeTypeHandler(Class<E> type) {
        Assert.notNull(type , "type argument can not be null");
        this.type = type;
    }

    @Override
    public void setNonNullParameter(PreparedStatement preparedStatement, int i, E e, JdbcType jdbcType) throws SQLException {
        preparedStatement.setByte(i , e.getCode());
    }

    @Override
    public E getNullableResult(ResultSet resultSet, String s) throws SQLException {
        Byte code = resultSet.getByte(s) ;
        return resultSet.wasNull() ? null : EnumUtils.codeOf(this.type , code);
    }

    @Override
    public E getNullableResult(ResultSet resultSet, int i) throws SQLException {
        Byte code = resultSet.getByte(i) ;
        return resultSet.wasNull() ? null : EnumUtils.codeOf(this.type , code);
    }

    @Override
    public E getNullableResult(CallableStatement callableStatement, int i) throws SQLException {
        Byte code = callableStatement.getByte(i);
        return callableStatement.wasNull() ? null : EnumUtils.codeOf(this.type , code);
    }

}