TimestampDataType.java

/*
 *
 * The DbUnit Database Testing Framework
 * Copyright (C)2002-2004, DbUnit.org
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

package org.dbunit.dataset.datatype;

import java.math.BigInteger;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.sql.Types;
import java.time.LocalDateTime;
import java.time.format.DateTimeParseException;
import java.util.TimeZone;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.dbunit.dataset.ITable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author Manuel Laflamme
 * @author Last changed by: $Author$
 * @version $Revision$ $Date$
 * @since 1.0 (Feb 19, 2002)
 */
public class TimestampDataType extends AbstractDataType
{
    private static final BigInteger ONE_BILLION = new BigInteger("1000000000");
    private static final Pattern TIMEZONE_REGEX =
            Pattern.compile("(.*)(?:\\W([+-][0-2][0-9][0-5][0-9]))");

    /**
     * Logger for this class
     */
    private static final Logger logger =
            LoggerFactory.getLogger(TimestampDataType.class);

    TimestampDataType()
    {
        super("TIMESTAMP", Types.TIMESTAMP, Timestamp.class, false);
    }

    ////////////////////////////////////////////////////////////////////////////
    // DataType class

    @Override
    public Object typeCast(final Object value) throws TypeCastException
    {
        logger.debug("typeCast(value={}) - start", value);

        if (value == null || value == ITable.NO_VALUE)
        {
            return null;
        }

        if (value instanceof java.sql.Timestamp)
        {
            return value;
        }

        if (value instanceof java.util.Date)
        {
            final java.util.Date date = (java.util.Date) value;
            return new java.sql.Timestamp(date.getTime());
        }

        if (value instanceof Long)
        {
            final Long date = (Long) value;
            return new java.sql.Timestamp(date);
        }

        if (value instanceof String)
        {
            String stringValue = value.toString();

            if (isExtendedSyntax(stringValue))
            {
                // Relative date.
                try
                {
                    final LocalDateTime datetime =
                            RELATIVE_DATE_TIME_PARSER.parse(stringValue);
                    return java.sql.Timestamp.valueOf(datetime);
                } catch (IllegalArgumentException | DateTimeParseException e)
                {
                    throw new TypeCastException(value, this, e);
                }
            }

            String zoneValue = null;

            final Matcher tzMatcher = TIMEZONE_REGEX.matcher(stringValue);
            if (tzMatcher.matches() && tzMatcher.group(2) != null)
            {
                stringValue = tzMatcher.group(1);
                zoneValue = tzMatcher.group(2);
            }

            Timestamp ts = null;
            if (stringValue.length() == 10)
            {
                try
                {
                    final long time =
                            java.sql.Date.valueOf(stringValue).getTime();
                    ts = new java.sql.Timestamp(time);
                } catch (final IllegalArgumentException e)
                {
                    // Was not a java.sql.Date, let Timestamp handle this value
                }
            }
            if (ts == null)
            {
                try
                {
                    ts = java.sql.Timestamp.valueOf(stringValue);
                } catch (final IllegalArgumentException e)
                {
                    throw new TypeCastException(value, this, e);
                }
            }

            // Apply zone if any
            if (zoneValue != null)
            {
                final long tsTime = ts.getTime();

                final TimeZone localTZ = java.util.TimeZone.getDefault();
                final int offset = localTZ.getOffset(tsTime);
                final BigInteger localTZOffset = BigInteger.valueOf(offset);
                BigInteger time = BigInteger.valueOf(tsTime / 1000 * 1000)
                        .add(localTZOffset).multiply(ONE_BILLION)
                        .add(BigInteger.valueOf(ts.getNanos()));
                final int hours = Integer.parseInt(zoneValue.substring(1, 3));
                final int minutes = Integer.parseInt(zoneValue.substring(3, 5));
                final BigInteger offsetAsSeconds =
                        BigInteger.valueOf((hours * 3600) + (minutes * 60));
                final BigInteger offsetAsNanos =
                        offsetAsSeconds.multiply(BigInteger.valueOf(1000))
                                .multiply(ONE_BILLION);
                if (zoneValue.charAt(0) == '+')
                {
                    time = time.subtract(offsetAsNanos);
                } else
                {
                    time = time.add(offsetAsNanos);
                }
                final BigInteger[] components =
                        time.divideAndRemainder(ONE_BILLION);
                ts = new Timestamp(components[0].longValue());
                ts.setNanos(components[1].intValue());
            }

            return ts;
        }

        throw new TypeCastException(value, this);
    }

    @Override
    public boolean isDateTime()
    {
        logger.debug("isDateTime() - start");

        return true;
    }

    @Override
    public Object getSqlValue(final int column, final ResultSet resultSet)
            throws SQLException, TypeCastException
    {
        logger.debug("getSqlValue(column={}, resultSet={}) - start", column,
                resultSet);
        final Timestamp rawValue = resultSet.getTimestamp(column);
        final Timestamp value = resultSet.wasNull() ? null : rawValue;
        logger.debug("getSqlValue: column={}, value={}", column, value);
        return value;
    }

    @Override
    public void setSqlValue(final Object value, final int column,
            final PreparedStatement statement)
            throws SQLException, TypeCastException
    {
        logger.debug("setSqlValue(value={}, column={}, statement={}) - start",
                value, column, statement);

        statement.setTimestamp(column, (java.sql.Timestamp) typeCast(value));
    }
}