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HSQLDB example source code file (TestDateTime.java)

This example HSQLDB source code file (TestDateTime.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - HSQLDB tags/keywords

calendar, connection, exactly, exactly, insert_date, jdbc, preparedstatement, preparedstatement, resultset, sql, string, string, testdatetime, text, the, the, throwable, util

The HSQLDB TestDateTime.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.ResultSet;
import java.sql.Statement;
import java.text.DateFormat;
import java.util.Calendar;

import junit.framework.Assert;

/**
 * Tests for normalisation of Time and Date values.
 * Base on the original test submission.
 * @author Miro Halas
 */
public class TestDateTime extends TestBase {

    public TestDateTime(String s) {
        super(s);
    }

    protected void setUp() {

        super.setUp();

        try {
            Connection connection = super.newConnection();
            Statement  statement  = connection.createStatement();

            statement.execute("drop table time_test if exists");
            statement.execute("drop table date_test if exists");
            statement.execute("create table time_test(time_test time)");
            statement.execute("create table date_test(date_test date)");
            connection.close();
        } catch (Exception e) {}
    }

    /**
     * Test the database support for Date objects. Date object ignores the time
     * portion of the Java Date.
     *
     * This class inserts date into database, then retrieve it back using
     * different java time
     *
     * @throws Throwable - an error has occured during test
     */
    public void testBasicDateSupport() throws Throwable {

        final String INSERT_DATE =
            "insert into date_test(date_test) values (?)";

        // See OracleTests class why we need to select tablename.*
        final String SELECT_DATE =
            "select date_test.* from date_test where date_test = ?";
        final String DELETE_DATE =
            "delete from date_test where date_test = ?";
        Calendar          calGenerate = Calendar.getInstance();
        java.sql.Date     insertDate;
        Connection        connection = super.newConnection();
        PreparedStatement insertStatement;
        int               iUpdateCount = 0;

        // Set date of my birthday ;-)
        calGenerate.set(1995, 9, 15, 1, 2, 3);

        insertDate      = new java.sql.Date(calGenerate.getTime().getTime());
        insertStatement = connection.prepareStatement(INSERT_DATE);

        insertStatement.setDate(1, insertDate);

        iUpdateCount = insertStatement.executeUpdate();

        insertStatement.close();
        Assert.assertEquals(
            "Exactly one record with date data shoud have been inserted.",
            iUpdateCount, 1);

        // Now select it back to be sure it is there
        PreparedStatement selectStatement = null;
        PreparedStatement deleteStatement = null;
        ResultSet         results         = null;
        java.sql.Date     retrievedDate   = null;
        boolean           bHasMoreThanOne;
        int               iDeletedCount = 0;

        // Set different time, since when we are dealing with just dates it
        // shouldn't matter
        calGenerate.set(1995, 9, 15, 2, 3, 4);

        java.sql.Date selectDate =
            new java.sql.Date(calGenerate.getTime().getTime());

        selectStatement = connection.prepareStatement(SELECT_DATE);

        selectStatement.setDate(1, selectDate);

        results = selectStatement.executeQuery();

        // Get the date from the database
        Assert.assertTrue("The inserted date is not in the database.",
                          results.next());

        retrievedDate   = results.getDate(1);
        deleteStatement = connection.prepareStatement(DELETE_DATE);

        deleteStatement.setDate(1, insertDate);

        iDeletedCount = deleteStatement.executeUpdate();

        deleteStatement.close();
        Assert.assertEquals(
            "Exactly one record with date data shoud have been deleted.",
            iDeletedCount, 1);

        boolean result = retrievedDate.toString().startsWith(
            insertDate.toString().substring(0, 10));

        Assert.assertTrue(
            "The date retrieved from database "
            + DateFormat.getDateTimeInstance().format(retrievedDate)
            + " is not the same as the inserted one "
            + DateFormat.getDateTimeInstance().format(insertDate), result);
    }

    /**
     * Test the database support for Time objects. Time object ignores the date
     * portion of the Java Date.
     *
     * This class inserts time into database, then retrieve it back using
     * different java date and deletes it using cursor.
     *
     * Uses the already setup connection and transaction.
     * No need to close the connection since base class is doing it for us.
     *
     * @throws Throwable - an error has occured during test
     */
    public void testBasicTimeSupport() throws Throwable {

        final String INSERT_TIME =
            "insert into time_test(time_test) values (?)";

        // See OracleTests class why we need to select tablename.*
        final String SELECT_TIME =
            "select time_test.* from time_test where time_test = ?";
        final String DELETE_TIME =
            "delete from time_test where time_test = ?";
        Calendar          calGenerate = Calendar.getInstance();
        java.sql.Time     insertTime;
        Connection        connection = super.newConnection();
        PreparedStatement insertStatement;
        int               iUpdateCount = 0;

        // Set date of my birthday ;-)
        calGenerate.set(1995, 9, 15, 1, 2, 3);

        insertTime      = new java.sql.Time(calGenerate.getTime().getTime());
        insertStatement = connection.prepareStatement(INSERT_TIME);

        insertStatement.setTime(1, insertTime);

        iUpdateCount = insertStatement.executeUpdate();

        insertStatement.close();
        Assert.assertEquals(
            "Exactly one record with time data shoud have been inserted.",
            iUpdateCount, 1);

        // Now select it back to be sure it is there
        PreparedStatement selectStatement = null;
        PreparedStatement deleteStatement = null;
        ResultSet         results         = null;
        java.sql.Time     retrievedTime;
        int               iDeletedCount = 0;
        java.sql.Time     selectTime;

        selectStatement = connection.prepareStatement(SELECT_TIME);

        // Set different date, since when we are dealing with just time it
        // shouldn't matter
        // fredt - but make sure the date is in the same daylight saving range as today !
        calGenerate.set(1975, 4, 16, 1, 2, 3);

        selectTime = new java.sql.Time(calGenerate.getTime().getTime());

        selectStatement.setTime(1, selectTime);

        results = selectStatement.executeQuery();

        // Get the date from the database
        Assert.assertTrue("The inserted time is not in the database.",
                          results.next());

        retrievedTime = results.getTime(1);

        //
        deleteStatement = connection.prepareStatement(DELETE_TIME);

        deleteStatement.setTime(1, insertTime);

        iDeletedCount = deleteStatement.executeUpdate();

        Assert.assertEquals(
            "Exactly one record with time data shoud have been deleted.",
            iDeletedCount, 1);

        // And now test the date
        Assert.assertNotNull(
            "The inserted time shouldn't be retrieved as null from the database",
            retrievedTime);

        // Ignore milliseconds when comparing dates
        boolean result =
            retrievedTime.toString().equals(insertTime.toString());

        Assert.assertTrue(
            "The time retrieved from database "
            + DateFormat.getDateTimeInstance().format(retrievedTime)
            + " is not the same as the inserted one "
            + DateFormat.getDateTimeInstance().format(insertTime), result);
    }
}

Other HSQLDB examples (source code examples)

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