SelectEmptyTable.java

/*
 * Copyright 1999-2017 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.druid.benckmark.proxy.sqlcase;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;

import org.junit.Assert;

import com.alibaba.druid.benckmark.proxy.BenchmarkCase;
import com.alibaba.druid.benckmark.proxy.SQLExecutor;
import com.alibaba.druid.util.JdbcUtils;

public class SelectEmptyTable extends BenchmarkCase {

    private String     sql;
    private Connection conn;
    private String     tableName;

    private String     createTableSql;
    private String     dropTableSql;

    public SelectEmptyTable(){
        super("SelectEmptyTable");

        tableName = "T_" + System.currentTimeMillis();

        createTableSql = "CREATE TABLE " + tableName
                         + "(F1 INT, F2 INT, F3 INT, F4 INT, F5 INT, F6 INT, F7 INT, F8 INT, F9 INT)";
        dropTableSql = "DROP TABLE " + tableName;
        sql = "SELECT * FROM T_" + tableName;
    }

    @Override
    public void setUp(SQLExecutor sqlExec) throws Exception {
        conn = sqlExec.getConnection();

        Statement stmt = null;
        try {
            stmt = conn.createStatement();
            stmt.execute(createTableSql);
        } finally {
            JdbcUtils.close(stmt);
        }
    }

    @Override
    public void execute(SQLExecutor sqlExec) throws Exception {
        Statement stmt = conn.createStatement();
        ResultSet rs = stmt.executeQuery(sql);
        int rowCount = 0;
        int value = 0;
        while (rs.next()) {
            value = rs.getInt(1);
            rowCount++;
        }
        Assert.assertEquals(1, value);
        Assert.assertEquals(1, rowCount);
        rs.close();
        stmt.close();
    }

    @Override
    public void tearDown(SQLExecutor sqlExec) throws Exception {
        Statement stmt = null;
        try {
            stmt = conn.createStatement();
            stmt.execute(dropTableSql);
        } finally {
            JdbcUtils.close(stmt);
        }

        conn.close();
        conn = null;
    }

}