diff tests/Test_Rmetadata.java @ 0:a5a898f6886c

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)
parents
children 04fbf3655452
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new file mode 100644
--- /dev/null
+++ b/tests/Test_Rmetadata.java
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+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0.  If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * Copyright 1997 - July 2008 CWI, August 2008 - 2016 MonetDB B.V.
+ */
+
+import java.sql.*;
+
+public class Test_Rmetadata {
+	public static void main(String[] args) throws Exception {
+		Class.forName("nl.cwi.monetdb.jdbc.MonetDriver");
+		Connection con = DriverManager.getConnection(args[0]);
+		Statement stmt = con.createStatement();
+		ResultSet rs = null;
+		ResultSetMetaData rsmd = null;
+		//DatabaseMetaData dbmd = con.getMetaData();
+
+		con.setAutoCommit(false);
+		// >> false: auto commit should be off now
+		System.out.println("0. false\t" + con.getAutoCommit());
+
+		try {
+			stmt.executeUpdate("CREATE TABLE table_Test_Rmetadata ( myint int, mydouble double, mybool boolean, myvarchar varchar(15), myclob clob )");
+
+			// all NULLs
+			stmt.executeUpdate("INSERT INTO table_Test_Rmetadata VALUES (NULL, NULL,            NULL,           NULL,                  NULL)");
+			// all filled in
+			stmt.executeUpdate("INSERT INTO table_Test_Rmetadata VALUES (2   , 3.0,             true,           'A string',            'bla bla bla')");
+
+			rs = stmt.executeQuery("SELECT * FROM table_Test_Rmetadata");
+			rsmd = rs.getMetaData();
+
+			System.out.println("0. 4 columns:\t" + rsmd.getColumnCount());
+			for (int col = 1; col <= rsmd.getColumnCount(); col++) {
+				System.out.println("Colnr " + col + ".");
+				System.out.println("\tclassname     " + rsmd.getColumnClassName(col));
+				System.out.println("\tdisplaysize   " + rsmd.getColumnDisplaySize(col));
+				System.out.println("\tlabel         " + rsmd.getColumnLabel(col));
+				System.out.println("\tname          " + rsmd.getColumnName(col));
+				System.out.println("\ttype          " + rsmd.getColumnType(col));
+				System.out.println("\ttypename      " + rsmd.getColumnTypeName(col));
+				System.out.println("\tprecision     " + rsmd.getPrecision(col));
+				System.out.println("\tscale         " + rsmd.getScale(col));
+				System.out.println("\tcatalogname   " + rsmd.getCatalogName(col));
+				System.out.println("\tschemaname    " + rsmd.getSchemaName(col));
+				System.out.println("\ttablename     " + rsmd.getTableName(col));
+				System.out.println("\tautoincrement " + rsmd.isAutoIncrement(col));
+				System.out.println("\tcasesensitive " + rsmd.isCaseSensitive(col));
+				System.out.println("\tcurrency      " + rsmd.isCurrency(col));
+				System.out.println("\tdefwritable   " + rsmd.isDefinitelyWritable(col));
+				System.out.println("\tnullable      " + rsmd.isNullable(col));
+				System.out.println("\treadonly      " + rsmd.isReadOnly(col));
+				System.out.println("\tsearchable    " + rsmd.isSearchable(col));
+				System.out.println("\tsigned        " + rsmd.isSigned(col));
+				System.out.println("\twritable      " + rsmd.isWritable(col));
+			}
+
+			for (int i = 5; rs.next(); i++) {
+				for (int col = 1; col <= rsmd.getColumnCount(); col++) {
+					System.out.println("" + i + ".\t" +
+						isInstance(rs.getObject(col), rsmd.getColumnClassName(col))
+					);
+				}
+			}
+		} catch (SQLException e) {
+			System.out.println("failed :( "+ e.getMessage());
+			System.out.println("ABORTING TEST!!!");
+		}
+
+		con.rollback();
+		con.close();
+	}
+
+	private static String isInstance(Object obj, String type) {
+		if (obj == null)
+			return("(null)");
+		try {
+			Class c = Class.forName(type);
+			if (c.isInstance(obj)) {
+				return(obj.getClass().getName() + " is an instance of " + type);
+			} else {
+				return(obj.getClass().getName() + " is NOT an instance of " + type);
+			}
+		} catch (ClassNotFoundException e) {
+			return("No such class: " + type);
+		}
+	}
+}