+
−/*
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− * This Source Code Form is subject to the terms of the Mozilla Public
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− * License, v. 2.0.  If a copy of the MPL was not distributed with this
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− * file, You can obtain one at http://mozilla.org/MPL/2.0/.
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− *
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− * Copyright 1997 - July 2008 CWI, August 2008 - 2020 MonetDB B.V.
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− */
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−
+
−import java.sql.*;
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−
+
−public class Test_Rmetadata {
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−	public static void main(String[] args) throws Exception {
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−		// Class.forName("nl.cwi.monetdb.jdbc.MonetDriver");	// not needed anymore for self registering JDBC drivers
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−		Connection con = DriverManager.getConnection(args[0]);
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−		Statement stmt = con.createStatement();
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−		ResultSet rs = null;
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−		ResultSetMetaData rsmd = null;
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−		//DatabaseMetaData dbmd = con.getMetaData();
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−
+
−		con.setAutoCommit(false);
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−		// >> false: auto commit should be off now
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−		System.out.println("0. false\t" + con.getAutoCommit());
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−
+
−		try {
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−			stmt.executeUpdate("CREATE TABLE table_Test_Rmetadata ( myint int, mydouble double, mybool boolean, myvarchar varchar(15), myclob clob )");
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−
+
−			// all NULLs
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−			stmt.executeUpdate("INSERT INTO table_Test_Rmetadata VALUES (NULL, NULL,            NULL,           NULL,                  NULL)");
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−			// all filled in
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−			stmt.executeUpdate("INSERT INTO table_Test_Rmetadata VALUES (2   , 3.0,             true,           'A string',            'bla bla bla')");
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−
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−			rs = stmt.executeQuery("SELECT * FROM table_Test_Rmetadata");
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−			rsmd = rs.getMetaData();
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−
+
−			System.out.println("0. 4 columns:\t" + rsmd.getColumnCount());
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−			for (int col = 1; col <= rsmd.getColumnCount(); col++) {
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−				System.out.println("Colnr " + col + ".");
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−				System.out.println("\tclassname     " + rsmd.getColumnClassName(col));
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−				System.out.println("\tdisplaysize   " + rsmd.getColumnDisplaySize(col));
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−				System.out.println("\tlabel         " + rsmd.getColumnLabel(col));
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−				System.out.println("\tname          " + rsmd.getColumnName(col));
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−				System.out.println("\ttype          " + rsmd.getColumnType(col));
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−				System.out.println("\ttypename      " + rsmd.getColumnTypeName(col));
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−				System.out.println("\tprecision     " + rsmd.getPrecision(col));
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−				System.out.println("\tscale         " + rsmd.getScale(col));
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−				System.out.println("\tcatalogname   " + rsmd.getCatalogName(col));
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−				System.out.println("\tschemaname    " + rsmd.getSchemaName(col));
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−				System.out.println("\ttablename     " + rsmd.getTableName(col));
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−				System.out.println("\tautoincrement " + rsmd.isAutoIncrement(col));
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−				System.out.println("\tcasesensitive " + rsmd.isCaseSensitive(col));
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−				System.out.println("\tcurrency      " + rsmd.isCurrency(col));
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−				System.out.println("\tdefwritable   " + rsmd.isDefinitelyWritable(col));
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−				System.out.println("\tnullable      " + rsmd.isNullable(col));
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−				System.out.println("\treadonly      " + rsmd.isReadOnly(col));
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−				System.out.println("\tsearchable    " + rsmd.isSearchable(col));
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−				System.out.println("\tsigned        " + rsmd.isSigned(col));
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−				System.out.println("\twritable      " + rsmd.isWritable(col));
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−			}
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−
+
−			for (int i = 5; rs.next(); i++) {
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−				for (int col = 1; col <= rsmd.getColumnCount(); col++) {
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−					System.out.println("" + i + ".\t" +
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−						isInstance(rs.getObject(col), rsmd.getColumnClassName(col))
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−					);
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−				}
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−			}
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−		} catch (SQLException e) {
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−			System.out.println("failed :( "+ e.getMessage());
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−			System.out.println("ABORTING TEST!!!");
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−		}
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−
+
−		con.rollback();
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−		con.close();
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−	}
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−
+
−	private static String isInstance(Object obj, String type) {
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−		if (obj == null || type == null)
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−			return("(null)");
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−		try {
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−			Class<?> c = Class.forName(type);
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−			if (c.isInstance(obj)) {
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−				return(obj.getClass().getName() + " is an instance of " + type);
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−			} else {
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−				return(obj.getClass().getName() + " is NOT an instance of " + type);
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−			}
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−		} catch (ClassNotFoundException e) {
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−			return("No such class: " + type);
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−		}
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−	}
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−}