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HSQLDB example source code file (TestBatchBug.java)
The HSQLDB TestBatchBug.java source code/* Copyright (c) 2001-2008, The HSQL Development Group * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * Neither the name of the HSQL Development Group nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG, * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package org.hsqldb.test; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.SQLException; import java.sql.Statement; import java.sql.Timestamp; import org.hsqldb.jdbc.jdbcDataSource; public class TestBatchBug { static final int DATASET_COUNT = 2; static final int DECIMAL_FIELDS_PER_DATASET = 2; static final String TABLE_ATTR_CACHED = "CACHED"; static final String IN_PROCESS_FILE_URL = "jdbc:hsqldb:/temp/hsqldb/perftest"; static final String HSQLDB_LOCALHOST_URL = "jdbc:hsqldb:hsql://localhost/yourtest"; ; static final String TEST_TABLE_NAME = "CSBug"; static String FIELD_LIST_WITHOUT_ID = "Kennung, Last_Update "; // wird in static {} erweitert: static String FIELD_LIST_WITH_ID = "ID, "; static String SQL_SELECT_ALL_FIELDS = "SELECT "; // wird in static {} erweitert: static { for (int i = 1; i <= DECIMAL_FIELDS_PER_DATASET; i++) { FIELD_LIST_WITHOUT_ID += ", Field_" + i; } FIELD_LIST_WITH_ID += FIELD_LIST_WITHOUT_ID; SQL_SELECT_ALL_FIELDS += FIELD_LIST_WITH_ID + " FROM " + TEST_TABLE_NAME; } static int ldfNrFuerKennung; public static void main(String[] arg) { try { String[] urls = { IN_PROCESS_FILE_URL, HSQLDB_LOCALHOST_URL, }; for (int i = 0; i < urls.length; i++) { String url = urls[i]; String[] tableAttrs = { TABLE_ATTR_CACHED }; for (int iAttr = 0; iAttr < tableAttrs.length; iAttr++) { testURL(url, "CACHED"); } } System.out.println("bye"); } catch (Exception e) { e.printStackTrace(); } } static void testURL(String url, String tableAttr) throws SQLException { System.out.println(url); jdbcDataSource dataSource = new jdbcDataSource(); dataSource.setDatabase(url); Connection con = dataSource.getConnection("sa", ""); reCreateTable(con, "CACHED"); populateTable(con); con.close(); } static void reCreateTable(Connection con, String tableAttr) throws SQLException { String cvsFileName = TEST_TABLE_NAME + ".csv"; // Create a statement object Statement stmt = con.createStatement(); // Try to drop the table try { // stmt.executeUpdate("DROP TABLE " + TEST_TABLE_NAME + " IF EXISTS"); stmt.executeUpdate("DROP TABLE " + TEST_TABLE_NAME); } catch (SQLException e) { // Ignore Exception, because the table may not yet exist System.out.println(e.getMessage()); } StringBuffer sql = new StringBuffer(); sql.append("CREATE "); sql.append(tableAttr); // z.B. "CACHED" sql.append(" TABLE "); sql.append(TEST_TABLE_NAME); sql.append(" ("); sql.append("Id integer IDENTITY"); sql.append(", "); sql.append("Kennung varchar(20) NOT NULL"); // etwas andere Schreibweise von CURRENT TIMESTAMP sql.append(", last_update TIMESTAMP "); sql.append("DEFAULT CURRENT_TIMESTAMP NOT NULL"); for (int i = 1; i <= DECIMAL_FIELDS_PER_DATASET; i++) { sql.append(", Field_" + i + " decimal"); } sql.append(", UNIQUE(Kennung)"); sql.append(")"); System.out.println(sql.toString()); stmt.executeUpdate(sql.toString()); // CLEAR TABLE sql = new StringBuffer(); sql.append("DELETE FROM "); sql.append(TEST_TABLE_NAME); System.out.println(sql.toString()); stmt.executeUpdate(sql.toString()); stmt.close(); // is no longer used } // tries to enter 2 records static void populateTable(Connection con) throws SQLException { long startTime = System.currentTimeMillis(); Timestamp now = new Timestamp(startTime); con.setAutoCommit(false); String sql = createInsertSQL(true, false); PreparedStatement prep = con.prepareStatement(sql); prep.clearParameters(); prep.setString(1, "xxx"); prep.setTimestamp(2, now); // last_update for (int ii = 0; ii < DECIMAL_FIELDS_PER_DATASET; ii++) { prep.setDouble(ii + 3, 0.123456789); // Wert } prep.addBatch(); prep.setString(1, "yyy"); prep.setTimestamp(2, now); // last_update for (int ii = 0; ii < DECIMAL_FIELDS_PER_DATASET; ii++) { prep.setDouble(ii + 3, 0.123456789); // Wert } prep.addBatch(); int[] updateCounts = prep.executeBatch(); con.setAutoCommit(true); prep.close(); } static String createInsertSQL(boolean prepStmt, boolean getIdAfterInsert) { StringBuffer sql = new StringBuffer(); sql.append("INSERT INTO "); sql.append(TEST_TABLE_NAME); sql.append(" ("); sql.append(FIELD_LIST_WITHOUT_ID); sql.append(") VALUES ("); Timestamp now = new Timestamp(System.currentTimeMillis()); Object val = "?"; if (prepStmt) { sql.append(val + ", " + val); } else { long millis = System.currentTimeMillis(); sql.append("'Ken"); sql.append((++ldfNrFuerKennung) + "'"); val = new Double(0.123456789) + ""; sql.append(", '" + now.toString() + "'"); } for (int i = 1; i <= DECIMAL_FIELDS_PER_DATASET; i++) { sql.append(", " + val); } sql.append(")"); String ret = sql.toString(); System.out.println(ret); return ret; } } Other HSQLDB examples (source code examples)Here is a short list of links related to this HSQLDB TestBatchBug.java source code file: |
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