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annotate tests/Test_Csendthread.java @ 973:32f246853ec4 default tip

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Optimisation, call connection.mapClobAsVarChar() and connection.mapBlobAsVarBinary() outside the for-loop, as it does not change.
author Martin van Dinther <martin.van.dinther@monetdbsolutions.com>
date Thu, 10 Apr 2025 19:26:59 +0200 (8 days ago)
parents d416e9b6b3d0
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * SPDX-License-Identifier: MPL-2.0
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3 *
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4 * This Source Code Form is subject to the terms of the Mozilla Public
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5 * License, v. 2.0. If a copy of the MPL was not distributed with this
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6 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
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7 *
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8 * Copyright 2024, 2025 MonetDB Foundation;
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9 * Copyright August 2008 - 2023 MonetDB B.V.;
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10 * Copyright 1997 - July 2008 CWI.
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11 */
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13 import java.sql.*;
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15 public class Test_Csendthread {
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16 public static void main(String[] args) throws Exception {
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17 System.out.println("0. active threads: " + Thread.activeCount());
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19 StringBuilder sb = new StringBuilder();
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20 sb.append("SELECT 1");
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21 for (int i = 0; i < 256; i++) {
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22 sb.append("-- ADDING DUMMY TEXT AS COMMENT TO MAKE THE QUERY VERY VERY VERY VERY LONG\n");
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23 }
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24 sb.append(";\n");
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25 String longQuery = sb.toString();
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27 for (int i = 0; i < 10; i++) {
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28 for (int j = 0; j < 10; j++) {
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29 Connection conn = DriverManager.getConnection(args[0]);
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30 try {
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31 Statement st = conn.createStatement();
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32 st.execute(longQuery);
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33 st.close();
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34 } finally {
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35 conn.close();
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36 }
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37 }
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38 System.out.println("1. active threads: " + Thread.activeCount());
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39 }
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40 System.out.println("2. active threads: " + Thread.activeCount());
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41 }
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42 }