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annotate tests/Test_Rpositioning.java @ 391:f523727db392

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Moved Java classes from packages starting with nl.cwi.monetdb.* to package org.monetdb.* This naming complies to the Java Package Naming convention as MonetDB's main website is www.monetdb.org.
author Martin van Dinther <martin.van.dinther@monetdbsolutions.com>
date Thu, 12 Nov 2020 22:02:01 +0100 (2020-11-12)
parents 54137aeb1f92
children bf9f6b6ecf40
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1 /*
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2 * This Source Code Form is subject to the terms of the Mozilla Public
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this
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4 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
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5 *
350
54137aeb1f92 Update Copyright year.
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6 * Copyright 1997 - July 2008 CWI, August 2008 - 2020 MonetDB B.V.
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7 */
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8
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9 import java.sql.*;
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10
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11 public class Test_Rpositioning {
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12 public static void main(String[] args) throws Exception {
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13 Connection con = DriverManager.getConnection(args[0]);
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14 Statement stmt = con.createStatement();
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15 DatabaseMetaData dbmd = con.getMetaData();
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16
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17 // get a one rowed resultset
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18 ResultSet rs = stmt.executeQuery("SELECT 1");
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19
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20 // >> true: we should be before the first result now
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21 System.out.println("1. true\t" + rs.isBeforeFirst());
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22 // >> false: we're not at the first result
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23 System.out.println("2. false\t" + rs.isFirst());
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24 // >> true: there is one result, so we can call next once
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25 System.out.println("3. true\t" + rs.next());
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26 // >> false: we're not before the first row anymore
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27 System.out.println("4. false\t" + rs.isBeforeFirst());
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28 // >> true: we're at the first result
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29 System.out.println("5. true\t" + rs.isFirst());
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30 // >> false: we're on the last row
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31 System.out.println("6. false\t" + rs.isAfterLast());
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32 // >> true: see above
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33 System.out.println("7. true\t" + rs.isLast());
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34 // >> false: there is one result, so this is it
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35 System.out.println("8. false\t" + rs.next());
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36 // >> true: yes, we're at the end
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37 System.out.println("9. true\t" + rs.isAfterLast());
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38 // >> false: no we're one over it
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39 System.out.println("10. false\t" + rs.isLast());
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40 // >> false: another try to move on should still fail
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41 System.out.println("11. false\t" + rs.next());
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42 // >> true: and we should stay positioned after the last
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43 System.out.println("12.true\t" + rs.isAfterLast());
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44
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45 rs.close();
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46
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47 // try the same with a 'virtual' result set
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48 rs = dbmd.getTableTypes();
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49
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50 // >> true: we should be before the first result now
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51 System.out.println("1. true\t" + rs.isBeforeFirst());
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52 // >> false: we're not at the first result
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53 System.out.println("2. false\t" + rs.isFirst());
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54 // >> true: there is one result, so we can call next once
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55 System.out.println("3. true\t" + rs.next());
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56 // >> false: we're not before the first row anymore
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57 System.out.println("4. false\t" + rs.isBeforeFirst());
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58 // >> true: we're at the first result
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59 System.out.println("5. true\t" + rs.isFirst());
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60 // move to last row
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61 rs.last();
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62 // >> false: we're on the last row
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63 System.out.println("6. false\t" + rs.isAfterLast());
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64 // >> true: see above
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65 System.out.println("7. true\t" + rs.isLast());
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66 // >> false: there is one result, so this is it
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67 System.out.println("8. false\t" + rs.next());
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68 // >> true: yes, we're at the end
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69 System.out.println("9. true\t" + rs.isAfterLast());
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70 // >> false: no we're one over it
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71 System.out.println("10. false\t" + rs.isLast());
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72 // >> false: another try to move on should still fail
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73 System.out.println("11. false\t" + rs.next());
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74 // >> true: and we should stay positioned after the last
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75 System.out.println("12. true\t" + rs.isAfterLast());
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76
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77 rs.close();
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78
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79 con.close();
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80 }
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81 }