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comparison tests/Test_Rmetadata.java @ 0:a5a898f6886c

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Copy of MonetDB java directory changeset e6e32756ad31.
author Sjoerd Mullender <sjoerd@acm.org>
date Wed, 21 Sep 2016 09:34:48 +0200 (2016-09-21)
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children 04fbf3655452
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-1:000000000000 0:a5a898f6886c
1 /*
2 * This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
5 *
6 * Copyright 1997 - July 2008 CWI, August 2008 - 2016 MonetDB B.V.
7 */
8
9 import java.sql.*;
10
11 public class Test_Rmetadata {
12 public static void main(String[] args) throws Exception {
13 Class.forName("nl.cwi.monetdb.jdbc.MonetDriver");
14 Connection con = DriverManager.getConnection(args[0]);
15 Statement stmt = con.createStatement();
16 ResultSet rs = null;
17 ResultSetMetaData rsmd = null;
18 //DatabaseMetaData dbmd = con.getMetaData();
19
20 con.setAutoCommit(false);
21 // >> false: auto commit should be off now
22 System.out.println("0. false\t" + con.getAutoCommit());
23
24 try {
25 stmt.executeUpdate("CREATE TABLE table_Test_Rmetadata ( myint int, mydouble double, mybool boolean, myvarchar varchar(15), myclob clob )");
26
27 // all NULLs
28 stmt.executeUpdate("INSERT INTO table_Test_Rmetadata VALUES (NULL, NULL, NULL, NULL, NULL)");
29 // all filled in
30 stmt.executeUpdate("INSERT INTO table_Test_Rmetadata VALUES (2 , 3.0, true, 'A string', 'bla bla bla')");
31
32 rs = stmt.executeQuery("SELECT * FROM table_Test_Rmetadata");
33 rsmd = rs.getMetaData();
34
35 System.out.println("0. 4 columns:\t" + rsmd.getColumnCount());
36 for (int col = 1; col <= rsmd.getColumnCount(); col++) {
37 System.out.println("Colnr " + col + ".");
38 System.out.println("\tclassname " + rsmd.getColumnClassName(col));
39 System.out.println("\tdisplaysize " + rsmd.getColumnDisplaySize(col));
40 System.out.println("\tlabel " + rsmd.getColumnLabel(col));
41 System.out.println("\tname " + rsmd.getColumnName(col));
42 System.out.println("\ttype " + rsmd.getColumnType(col));
43 System.out.println("\ttypename " + rsmd.getColumnTypeName(col));
44 System.out.println("\tprecision " + rsmd.getPrecision(col));
45 System.out.println("\tscale " + rsmd.getScale(col));
46 System.out.println("\tcatalogname " + rsmd.getCatalogName(col));
47 System.out.println("\tschemaname " + rsmd.getSchemaName(col));
48 System.out.println("\ttablename " + rsmd.getTableName(col));
49 System.out.println("\tautoincrement " + rsmd.isAutoIncrement(col));
50 System.out.println("\tcasesensitive " + rsmd.isCaseSensitive(col));
51 System.out.println("\tcurrency " + rsmd.isCurrency(col));
52 System.out.println("\tdefwritable " + rsmd.isDefinitelyWritable(col));
53 System.out.println("\tnullable " + rsmd.isNullable(col));
54 System.out.println("\treadonly " + rsmd.isReadOnly(col));
55 System.out.println("\tsearchable " + rsmd.isSearchable(col));
56 System.out.println("\tsigned " + rsmd.isSigned(col));
57 System.out.println("\twritable " + rsmd.isWritable(col));
58 }
59
60 for (int i = 5; rs.next(); i++) {
61 for (int col = 1; col <= rsmd.getColumnCount(); col++) {
62 System.out.println("" + i + ".\t" +
63 isInstance(rs.getObject(col), rsmd.getColumnClassName(col))
64 );
65 }
66 }
67 } catch (SQLException e) {
68 System.out.println("failed :( "+ e.getMessage());
69 System.out.println("ABORTING TEST!!!");
70 }
71
72 con.rollback();
73 con.close();
74 }
75
76 private static String isInstance(Object obj, String type) {
77 if (obj == null)
78 return("(null)");
79 try {
80 Class c = Class.forName(type);
81 if (c.isInstance(obj)) {
82 return(obj.getClass().getName() + " is an instance of " + type);
83 } else {
84 return(obj.getClass().getName() + " is NOT an instance of " + type);
85 }
86 } catch (ClassNotFoundException e) {
87 return("No such class: " + type);
88 }
89 }
90 }