org.apache.drill.jdbc.test.JdbcTestActionBase.java Source code

Introduction

Here is the source code for org.apache.drill.jdbc.test.JdbcTestActionBase.java

Source

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.drill.jdbc.test;

import java.io.IOException;
import java.nio.file.Paths;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.concurrent.TimeUnit;

import org.apache.drill.common.util.TestTools;
import org.apache.drill.jdbc.Driver;
import org.apache.drill.jdbc.JdbcTestBase;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Rule;
import org.junit.rules.TestRule;
import org.junit.rules.TestWatcher;
import org.junit.runner.Description;

import com.google.common.base.Stopwatch;

public class JdbcTestActionBase extends JdbcTestBase {
    // Set a timeout unless we're debugging.
    @Rule
    public TestRule TIMEOUT = TestTools.getTimeoutRule(40000);

    protected static final String WORKING_PATH;
    static {
        Driver.load();
        WORKING_PATH = Paths.get("").toAbsolutePath().toString();

    }

    protected void testQuery(final String sql) throws Exception {
        testAction(new JdbcAction() {

            @Override
            public ResultSet getResult(Connection c) throws SQLException {
                Statement s = c.createStatement();
                ResultSet r = s.executeQuery(sql);
                return r;
            }

        });
    }

    protected void testAction(JdbcAction action) throws Exception {
        testAction(action, -1);
    }

    protected void testAction(JdbcAction action, long rowcount) throws Exception {
        int rows = 0;
        Stopwatch watch = new Stopwatch().start();
        ResultSet r = action.getResult(connection);
        boolean first = true;
        while (r.next()) {
            rows++;
            ResultSetMetaData md = r.getMetaData();
            if (first == true) {
                for (int i = 1; i <= md.getColumnCount(); i++) {
                    System.out.print(md.getColumnName(i));
                    System.out.print('\t');
                }
                System.out.println();
                first = false;
            }

            for (int i = 1; i <= md.getColumnCount(); i++) {
                System.out.print(r.getObject(i));
                System.out.print('\t');
            }
            System.out.println();
        }

        System.out.println(String.format("Query completed in %d millis.", watch.elapsed(TimeUnit.MILLISECONDS)));

        if (rowcount != -1) {
            Assert.assertEquals((long) rowcount, (long) rows);
        }

        System.out.println("\n\n\n");

    }

    public static interface JdbcAction {
        ResultSet getResult(Connection c) throws SQLException;
    }

    static void resetConnection() throws Exception {
        closeClient();
        openClient();
    }

    static Connection connection;

    @BeforeClass
    public static void openClient() throws Exception {
        connection = DriverManager.getConnection("jdbc:drill:zk=local", null);
    }

    @AfterClass
    public static void closeClient() throws IOException, SQLException {
        connection.close();
    }

    public final TestRule resetWatcher = new TestWatcher() {
        @Override
        protected void failed(Throwable e, Description description) {
            try {
                resetConnection();
            } catch (Exception e1) {
                throw new RuntimeException("Failure while resetting client.", e1);
            }
        }
    };

}