Mercurial > hg > monetdb-java

annotate tests/Test_Wrapper.java @ 261:d4baf8a4b43a

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Update Copyright year to 2019
author Martin van Dinther <martin.van.dinther@monetdbsolutions.com>
date Thu, 03 Jan 2019 14:43:44 +0100 (2019-01-03)
parents c38d4eaf5479
children 54137aeb1f92
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8e57d20b5e80 Corrected implementation of java.sql.Wrapper methods isWrapperFor() and unwrap().
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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 *
261
d4baf8a4b43a Update Copyright year to 2019
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6 * Copyright 1997 - July 2008 CWI, August 2008 - 2019 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_Wrapper {
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12 public static void main(String[] args) throws Exception {
27
04fbf3655452 Disable Class.forName("nl.cwi.monetdb.jdbc.MonetDriver"); code
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13 // Class.forName("nl.cwi.monetdb.jdbc.MonetDriver"); // not needed anymore for self registering JDBC drivers
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14 final Connection con = DriverManager.getConnection(args[0]);
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15 System.out.println("Connected. Auto commit is: " + con.getAutoCommit());
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16
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17 try {
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18 final String jdbc_pkg = "java.sql.";
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19 final String monetdb_jdbc_pkg = "nl.cwi.monetdb.jdbc.";
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20
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21 checkIsWrapperFor("Connection", con, jdbc_pkg, "Connection");
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22 checkIsWrapperFor("Connection", con, monetdb_jdbc_pkg, "MonetConnection");
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23 checkIsWrapperFor("Connection", con, jdbc_pkg, "Statement");
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24 checkIsWrapperFor("Connection", con, monetdb_jdbc_pkg, "MonetStatement");
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25
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26 DatabaseMetaData dbmd = con.getMetaData();
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27 checkIsWrapperFor("DatabaseMetaData", dbmd, jdbc_pkg, "DatabaseMetaData");
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28 checkIsWrapperFor("DatabaseMetaData", dbmd, monetdb_jdbc_pkg, "MonetDatabaseMetaData");
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29 checkIsWrapperFor("DatabaseMetaData", dbmd, jdbc_pkg, "Statement");
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30 checkIsWrapperFor("DatabaseMetaData", dbmd, monetdb_jdbc_pkg, "MonetStatement");
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31
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32 ResultSet rs = dbmd.getSchemas();
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33 checkIsWrapperFor("ResultSet", rs, jdbc_pkg, "ResultSet");
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34 checkIsWrapperFor("ResultSet", rs, monetdb_jdbc_pkg, "MonetResultSet");
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35 checkIsWrapperFor("ResultSet", rs, jdbc_pkg, "Statement");
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36 checkIsWrapperFor("ResultSet", rs, monetdb_jdbc_pkg, "MonetStatement");
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37
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38 ResultSetMetaData rsmd = rs.getMetaData();
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39 checkIsWrapperFor("ResultSetMetaData", rsmd, jdbc_pkg, "ResultSetMetaData");
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40 checkIsWrapperFor("ResultSetMetaData", rsmd, monetdb_jdbc_pkg, "MonetResultSet");
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41 checkIsWrapperFor("ResultSetMetaData", rsmd, monetdb_jdbc_pkg, "MonetResultSet$rsmdw"); // it is a private class of MonetResultSet
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42 checkIsWrapperFor("ResultSetMetaData", rsmd, jdbc_pkg, "Statement");
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43 checkIsWrapperFor("ResultSetMetaData", rsmd, monetdb_jdbc_pkg, "MonetStatement");
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44
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45 rs.close();
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46
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47 Statement stmt = con.createStatement();
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48 checkIsWrapperFor("Statement", stmt, jdbc_pkg, "Statement");
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49 checkIsWrapperFor("Statement", stmt, monetdb_jdbc_pkg, "MonetStatement");
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50 checkIsWrapperFor("Statement", stmt, jdbc_pkg, "Connection");
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51 checkIsWrapperFor("Statement", stmt, monetdb_jdbc_pkg, "MonetConnection");
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52
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53 stmt.close();
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54
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55 PreparedStatement pstmt = con.prepareStatement("SELECT name FROM sys.tables WHERE system AND name like ?");
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56 checkIsWrapperFor("PreparedStatement", pstmt, jdbc_pkg, "PreparedStatement");
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57 checkIsWrapperFor("PreparedStatement", pstmt, monetdb_jdbc_pkg, "MonetPreparedStatement");
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58 checkIsWrapperFor("PreparedStatement", pstmt, jdbc_pkg, "Statement");
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59 checkIsWrapperFor("PreparedStatement", pstmt, monetdb_jdbc_pkg, "MonetStatement");
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60 checkIsWrapperFor("PreparedStatement", pstmt, jdbc_pkg, "Connection");
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61 checkIsWrapperFor("PreparedStatement", pstmt, monetdb_jdbc_pkg, "MonetConnection");
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62
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63 ParameterMetaData pmd = pstmt.getParameterMetaData();
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64 checkIsWrapperFor("ParameterMetaData", pmd, jdbc_pkg, "ParameterMetaData");
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65 checkIsWrapperFor("ParameterMetaData", pmd, monetdb_jdbc_pkg, "MonetPreparedStatement");
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66 checkIsWrapperFor("ParameterMetaData", pmd, monetdb_jdbc_pkg, "MonetPreparedStatement$pmdw"); // it is a private class of MonetPreparedStatement
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67 checkIsWrapperFor("ParameterMetaData", pmd, jdbc_pkg, "Connection");
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68 checkIsWrapperFor("ParameterMetaData", pmd, monetdb_jdbc_pkg, "MonetConnection");
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69
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70 ResultSetMetaData psrsmd = pstmt.getMetaData();
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71 checkIsWrapperFor("PrepStmt ResultSetMetaData", psrsmd, jdbc_pkg, "ResultSetMetaData");
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72 checkIsWrapperFor("PrepStmt ResultSetMetaData", psrsmd, monetdb_jdbc_pkg, "MonetPreparedStatement");
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73 checkIsWrapperFor("PrepStmt ResultSetMetaData", psrsmd, monetdb_jdbc_pkg, "MonetPreparedStatement$rsmdw"); // it is a private class of MonetPreparedStatement
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74 checkIsWrapperFor("PrepStmt ResultSetMetaData", psrsmd, jdbc_pkg, "Connection");
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75 checkIsWrapperFor("PrepStmt ResultSetMetaData", psrsmd, monetdb_jdbc_pkg, "MonetConnection");
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76
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77 pstmt.close();
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78
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79 } catch (SQLException e) {
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80 while ((e = e.getNextException()) != null)
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81 System.out.println("FAILED :( " + e.getMessage());
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82 }
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83 con.close();
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84 }
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85
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86 private static void checkIsWrapperFor(String objnm, Wrapper obj, String pkgnm, String classnm) {
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87 try {
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88 Class<?> clazz = Class.forName(pkgnm + classnm);
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89 boolean isWrapper = obj.isWrapperFor(clazz);
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90 System.out.print(objnm + ". isWrapperFor(" + classnm + ") returns: " + isWrapper);
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91 if (isWrapper) {
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92 Object wobj = obj.unwrap(clazz);
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93 System.out.print("\tCalled unwrap(). Returned object is " + (wobj != null ? "not null, so oke" : "null !!"));
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94 }
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95 System.out.println();
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96 } catch (ClassNotFoundException cnfe) {
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97 System.out.println(cnfe.toString());
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98 } catch (SQLException se) {
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99 System.out.println(se.getMessage());
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100 }
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101 }
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102 }