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annotate example/SQLImport.java @ 925:4dfdb62e3e9d

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Extend JDBC_API_Tester program with optional second startup argument '-skipMALoutput'. This allows the JDBC_API_Tester program to be called to skip the comparing the MAL output of tests which return MAL output such as PLAN, EXPLAIN and TRACE statements. It is intended for internal development use only.
author Martin van Dinther <martin.van.dinther@monetdbsolutions.com>
date Thu, 08 Aug 2024 15:26:28 +0200 (11 months ago)
parents e890195256ac
children d416e9b6b3d0
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1 /*
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2 * SPDX-License-Identifier: MPL-2.0
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3 *
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4 * This Source Code Form is subject to the terms of the Mozilla Public
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5 * License, v. 2.0. If a copy of the MPL was not distributed with this
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6 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
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7 *
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8 * Copyright 2024 MonetDB Foundation;
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9 * Copyright August 2008 - 2023 MonetDB B.V.;
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10 * Copyright 1997 - July 2008 CWI.
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11 */
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13 import java.sql.*;
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14 import java.io.*;
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16 /**
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17 * This simple example somewhat emulates the mclient command. However in
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18 * it's simpleness it only supports SQL queries which entirely are on one line.
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19 *
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20 * This program reads a file line by line, and feeds the line into a running
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21 * Mserver5 on the localhost. Upon error, the error is reported and the program
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22 * continues reading and executing lines.
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23 * A very lousy way of implementing options is used to somewhat configure the
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24 * behaviour of the program in order to be a bit more verbose or commit after
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25 * each (sucessfully) executed line.
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26 *
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27 * The program uses a debuglog in which the exact conversation between the
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28 * JDBC driver and Mserver is reported. The log file is put in the current
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29 * working directory and names like monet_[unix timestamp].log
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30 *
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31 * @author Fabian Groffen
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32 */
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33
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34 public class SQLImport {
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35 public static void main(String[] args) throws Exception {
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36 if (args.length < 1) {
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37 System.out.println("synopsis: java SQLImport filename [autocommit] [verbose]");
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38 System.exit(-1);
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39 }
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40
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41 // open the file
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42 BufferedReader fr = new BufferedReader(new FileReader(args[0]));
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43
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44 // request a connection suitable for MonetDB from the driver manager
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45 // note that the database specifier is currently not implemented, for
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46 // MonetDB itself can't access multiple databases.
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47 // turn on debugging
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48 Connection con = DriverManager.getConnection("jdbc:monetdb://localhost/demo?debug=true", "monetdb", "monetdb");
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49
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50 boolean beVerbose = false;
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51 if (args.length == 3) {
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52 // turn on verbose mode
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53 beVerbose = true;
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54 }
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55 if (args.length < 2) {
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56 // disable auto commit using the driver
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57 con.setAutoCommit(false);
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58 }
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59
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60 // get a statement to execute on
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61 Statement stmt = con.createStatement();
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62
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63 String query;
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64 for (int i = 1; (query = fr.readLine()) != null; i++) {
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65 if (beVerbose)
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66 System.out.println(query);
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67 try {
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68 // execute the query, no matter what it is
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69 stmt.execute(query);
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70 } catch (SQLException e) {
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71 System.out.println("Error on line " + i + ": " + e.getMessage());
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72 if (!beVerbose)
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73 System.out.println(query);
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74 }
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75 }
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77 // free resources, close the statement
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78 stmt.close();
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79 // close the connection with the database
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80 con.close();
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81 // close the file
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82 fr.close();
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83 }
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84 }