+
−/*
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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 - 2016 MonetDB B.V.
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− */
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−
+
−import java.sql.*;
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−
+
−public class BugConcurrent_sequences {
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−	public static void main(String[] args) throws Exception {
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−		Connection con1 = null, con2 = null;
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−		Statement stmt1 = null, stmt2 = null;
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−		ResultSet rs1 = null, rs2 = null;
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−		Class.forName("nl.cwi.monetdb.jdbc.MonetDriver");
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−		con1 = DriverManager.getConnection(args[0]);
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−		con2 = DriverManager.getConnection(args[0]);
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−		stmt1 = con1.createStatement();
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−		stmt2 = con2.createStatement();
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−
+
−		// >> true: auto commit should be on by default
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−		System.out.println("0. true\t" + con1.getAutoCommit());
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−		System.out.println("0. true\t" + con2.getAutoCommit());
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−
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−		// create a table
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−		try {
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−			System.out.print("1. create table t1 using client 1... ");
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−			stmt1.executeUpdate("CREATE TABLE t1 ( id serial, who varchar(12) )");
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−			System.out.println("passed :)");
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−		} catch (SQLException e) {
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−			// this means we failed (that sux)
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−			System.out.println("FAILED 1 :( " + e.getMessage());
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−			System.out.println("ABORTING TEST!!!");
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−			con1.close();
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−			con2.close();
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−			System.exit(-1);
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−		}
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−
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−		// test the insertion of values with concurrent clients
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−		try {
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−			System.out.print("2. insert into t1 using client 1 and 2... ");
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−			stmt1.executeUpdate("INSERT INTO t1(who) VALUES('client1')");
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−			System.out.println("client 1 passed :)");
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−			con2.setAutoCommit(false);
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−			stmt2.executeUpdate("INSERT INTO t1(who) VALUES('client2')");
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−			System.out.println("transaction on client 2 :)");
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−			stmt1.executeUpdate("INSERT INTO t1(who) VALUES('client1')");
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−			System.out.println("client 1 passed :)");
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−			try {
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−				con2.commit();
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−				System.out.println("transaction client 2 PASSED :(");
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−				System.exit(-1);
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−			} catch (SQLException e) {
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−				System.out.println("transaction client 2 failed :)");
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−			}
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−			con2.setAutoCommit(true);
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−			stmt2.executeUpdate("INSERT INTO t1(who) VALUES('client2')");
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−			System.out.println("passed :)");
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−			System.out.println("2.1. check table status with client 1...");
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−			rs1 = stmt1.executeQuery("SELECT * FROM t1");
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−			while (rs1.next())
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−				System.out.println(rs1.getInt("id") + ", " +
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−						rs1.getString("who"));
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−			System.out.println("passed :)");
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−			System.out.println("2.2. check table status with client 2...");
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−			rs2 = stmt2.executeQuery("SELECT * FROM t1");
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−			while (rs2.next())
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−				System.out.println(rs2.getInt("id") + ", " +
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−						rs2.getString("who"));
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−			System.out.println("passed :)");
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−		} catch (SQLException e) {
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−			// this means we failed (table not there perhaps?)
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−			System.out.println("FAILED 2 :( " + e.getMessage());
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−			System.out.println("ABORTING TEST!!!");
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−			if (rs1 != null) rs1.close();
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−			if (rs2 != null) rs2.close();
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−			con1.close();
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−			con2.close();
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−			System.exit(-1);
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−		}
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−
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−		// drop the table (not dropping the sequence) from client 1
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−		try {
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−			System.out.print("3.1. drop table t1 using client 1... ");
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−			stmt1.executeUpdate("DROP TABLE t1");
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−			System.out.println("passed :)");
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−			System.out.print("3.1. recreate t1 using client 1... ");
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−			stmt1.executeUpdate("CREATE TABLE t1 ( id serial, who varchar(12) )");
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−			System.out.println("passed :)");
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−		} catch (SQLException e) {
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−			// this means we failed (table not there perhaps?)
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−			System.out.println("FAILED 3 :( " + e.getMessage());
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−			System.out.println("ABORTING TEST!!!");
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−			if (rs1 != null) rs1.close();
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−			if (rs2 != null) rs2.close();
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−			con1.close();
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−			con2.close();
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−			System.exit(-1);
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−		}
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−
+
−		// re-establish connection
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−		try {
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−			System.out.print("x. Reconnecting client 1 and 2... ");
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−			con1.close();
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−			con2.close();
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−			con1 = DriverManager.getConnection(args[0]);
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−			con2 = DriverManager.getConnection(args[0]);
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−			stmt1 = con1.createStatement();
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−			stmt2 = con2.createStatement();
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−			System.out.println("passed :)");
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−		} catch (SQLException e) {
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−			// this means we failed (table not there perhaps?)
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−			System.out.println("FAILED x :( " + e.getMessage());
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−			System.out.println("ABORTING TEST!!!");
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−			if (rs1 != null) rs1.close();
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−			if (rs2 != null) rs2.close();
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−			con1.close();
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−			con2.close();
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−			System.exit(-1);
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−		}
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−
+
−		// insert and print, should get 1,2
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−		try {
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−			System.out.println("4. insert into t1 using client 1 and 2...");
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−			stmt1.executeUpdate("INSERT INTO t1(who) VALUES('client1')");
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−			System.out.println("passed :)");
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−			con2.setAutoCommit(false);
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−			stmt2.executeUpdate("INSERT INTO t1(who) VALUES('client2')");
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−			con2.commit();
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−			con2.setAutoCommit(true);
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−			System.out.println("passed :)");
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−			System.out.println("4.1. check table status with client 1...");
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−			rs1 = stmt1.executeQuery("SELECT * FROM t1 ORDER BY who");
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−			for (int cntr = 1; rs1.next(); cntr++) {
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−				int id = rs1.getInt("id");
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−				System.out.println(id + ", " +
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−						rs1.getString("who"));
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−				if (id != cntr)
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−					throw new SQLException("expected " + cntr + ", got " + id);
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−			}
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−			System.out.println("passed :)");
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−			System.out.println("4.2. check table status with client 2...");
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−			rs2 = stmt2.executeQuery("SELECT * FROM t1 ORDER BY who");
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−			for (int cntr = 1; rs2.next(); cntr++) {
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−				int id = rs2.getInt("id");
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−				System.out.println(id + ", " +
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−						rs2.getString("who"));
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−				if (id != cntr)
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−					throw new SQLException("expected " + cntr + ", got " + id);
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−			}
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−			System.out.println("passed :)");
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−		} catch (SQLException e) {
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−			// this means we failed (table not there perhaps?)
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−			System.out.println("FAILED 4 :( " + e.getMessage());
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−			System.out.println("ABORTING TEST!!!");
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−			if (rs1 != null) rs1.close();
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−			if (rs2 != null) rs2.close();
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−			con1.close();
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−			con2.close();
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−			System.exit(-1);
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−		}
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−
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−		if (rs1 != null) rs1.close();
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−		if (rs2 != null) rs2.close();
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−
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−		// cleanup
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−		try {
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−			stmt1.executeUpdate("DROP TABLE t1");
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−		} catch (SQLException e) {
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−			System.out.println("FAILED to clean up! :( " + e.getMessage());
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−		}
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−
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−		con1.close();
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−		con2.close();
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−	}
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−}