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Bug 56269 - DateFormat - Rounding of fractionals

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git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1592419 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Andreas Beeker 2014-05-04 21:17:18 +00:00
parent 234ad7f85e
commit 337f775807
3 changed files with 118 additions and 34 deletions
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2
src/java/org/apache/poi/ss/formula/atp/YearFracCalculator.java
View File

@ -317,7 +317,7 @@ final class YearFracCalculator {
private static SimpleDate createDate(int dayCount) {
GregorianCalendar calendar = new GregorianCalendar(UTC_TIME_ZONE);
DateUtil.setCalendar(calendar, dayCount, 0, false);
DateUtil.setCalendar(calendar, dayCount, 0, false, false);
return new SimpleDate(calendar);
}

76
src/java/org/apache/poi/ss/usermodel/DateUtil.java
View File

@ -185,8 +185,29 @@ public class DateUtil {
* @return Java representation of the date, or null if date is not a valid Excel date
*/
public static Date getJavaDate(double date, boolean use1904windowing, TimeZone tz) {
return getJavaCalendar(date, use1904windowing, tz).getTime();
return getJavaCalendar(date, use1904windowing, tz, false).getTime();
}
/**
* Given an Excel date with either 1900 or 1904 date windowing,
* converts it to a java.util.Date.
*
* Excel Dates and Times are stored without any timezone
* information. If you know (through other means) that your file
* uses a different TimeZone to the system default, you can use
* this version of the getJavaDate() method to handle it.
*
* @param date The Excel date.
* @param tz The TimeZone to evaluate the date in
* @param use1904windowing true if date uses 1904 windowing,
* or false if using 1900 date windowing.
* @param roundSeconds round to closest second
* @return Java representation of the date, or null if date is not a valid Excel date
*/
public static Date getJavaDate(double date, boolean use1904windowing, TimeZone tz, boolean roundSeconds) {
return getJavaCalendar(date, use1904windowing, tz, roundSeconds).getTime();
}
/**
* Given an Excel date with either 1900 or 1904 date windowing,
* converts it to a java.util.Date.
@ -207,12 +228,12 @@ public class DateUtil {
* @see java.util.TimeZone
*/
public static Date getJavaDate(double date, boolean use1904windowing) {
return getJavaCalendar(date, use1904windowing).getTime();
return getJavaCalendar(date, use1904windowing, null, false).getTime();
}
public static void setCalendar(Calendar calendar, int wholeDays,
int millisecondsInDay, boolean use1904windowing) {
int millisecondsInDay, boolean use1904windowing, boolean roundSeconds) {
int startYear = 1900;
int dayAdjust = -1; // Excel thinks 2/29/1900 is a valid date, which it isn't
if (use1904windowing) {
@ -225,10 +246,24 @@ public class DateUtil {
dayAdjust = 0;
}
calendar.set(startYear,0, wholeDays + dayAdjust, 0, 0, 0);
calendar.set(GregorianCalendar.MILLISECOND, millisecondsInDay);
calendar.set(Calendar.MILLISECOND, millisecondsInDay);
if (roundSeconds) {
calendar.add(Calendar.MILLISECOND, 500);
calendar.clear(Calendar.MILLISECOND);
}
}
/**
* Get EXCEL date as Java Calendar (with default time zone).
* This is like {@link #getJavaDate(double)} but returns a Calendar object.
* @param date The Excel date.
* @return Java representation of the date, or null if date is not a valid Excel date
*/
public static Calendar getJavaCalendar(double date) {
return getJavaCalendar(date, false, (TimeZone)null, false);
}
/**
* Get EXCEL date as Java Calendar (with default time zone).
* This is like {@link #getJavaDate(double, boolean)} but returns a Calendar object.
@ -238,29 +273,45 @@ public class DateUtil {
* @return Java representation of the date, or null if date is not a valid Excel date
*/
public static Calendar getJavaCalendar(double date, boolean use1904windowing) {
return getJavaCalendar(date, use1904windowing, (TimeZone)null);
return getJavaCalendar(date, use1904windowing, (TimeZone)null, false);
}
/**
* Get EXCEL date as Java Calendar with UTC time zone.
* This is similar to {@link #getJavaDate(double, boolean)} but returns a
* Calendar object that has UTC as time zone, so no daylight saving hassle.
* @param date The Excel date.
* @param use1904windowing true if date uses 1904 windowing,
* or false if using 1900 date windowing.
* @return Java representation of the date in UTC, or null if date is not a valid Excel date
* @param date The Excel date.
* @param use1904windowing true if date uses 1904 windowing,
* or false if using 1900 date windowing.
* @return Java representation of the date in UTC, or null if date is not a valid Excel date
*/
public static Calendar getJavaCalendarUTC(double date, boolean use1904windowing) {
return getJavaCalendar(date, use1904windowing, TIMEZONE_UTC);
return getJavaCalendar(date, use1904windowing, TIMEZONE_UTC, false);
}
/**
* Get EXCEL date as Java Calendar with given time zone.
* @see #getJavaDate(double, TimeZone)
* @param date The Excel date.
* @param use1904windowing true if date uses 1904 windowing,
* or false if using 1900 date windowing.
* @param timeZone The TimeZone to evaluate the date in
* @return Java representation of the date, or null if date is not a valid Excel date
*/
public static Calendar getJavaCalendar(double date, boolean use1904windowing, TimeZone timeZone) {
return getJavaCalendar(date, use1904windowing, timeZone, false);
}
/**
* Get EXCEL date as Java Calendar with given time zone.
* @param date The Excel date.
* @param use1904windowing true if date uses 1904 windowing,
* or false if using 1900 date windowing.
* @param timeZone The TimeZone to evaluate the date in
* @param roundSeconds round to closest second
* @return Java representation of the date, or null if date is not a valid Excel date
*/
public static Calendar getJavaCalendar(double date, boolean use1904windowing, TimeZone timeZone, boolean roundSeconds) {
if (!isValidExcelDate(date)) {
return null;
}
@ -272,7 +323,7 @@ public class DateUtil {
} else {
calendar = new GregorianCalendar(); // using default time-zone
}
setCalendar(calendar, wholeDays, millisecondsInDay, use1904windowing);
setCalendar(calendar, wholeDays, millisecondsInDay, use1904windowing, roundSeconds);
return calendar;
}
@ -537,6 +588,7 @@ public class DateUtil {
}
@SuppressWarnings("serial")
private static final class FormatException extends Exception {
public FormatException(String msg) {
super(msg);

74
src/testcases/org/apache/poi/hssf/usermodel/TestHSSFDateUtil.java
View File

@ -17,15 +17,18 @@
package org.apache.poi.hssf.usermodel;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.TimeZone;
import junit.framework.TestCase;
import org.apache.poi.hssf.HSSFTestDataSamples;
import org.apache.poi.hssf.model.InternalWorkbook;
import org.junit.Test;
/**
* Class TestHSSFDateUtil
@ -37,7 +40,7 @@ import org.apache.poi.hssf.model.InternalWorkbook;
* @author Alex Jacoby (ajacoby at gmail.com)
* @version %I%, %G%
*/
public final class TestHSSFDateUtil extends TestCase {
public final class TestHSSFDateUtil {
public static final int CALENDAR_JANUARY = 0;
public static final int CALENDAR_FEBRUARY = 1;
@ -49,8 +52,8 @@ public final class TestHSSFDateUtil extends TestCase {
/**
* Checks the date conversion functions in the HSSFDateUtil class.
*/
public void testDateConversion() {
@Test
public void dateConversion() {
// Iteratating over the hours exposes any rounding issues.
for (int hour = 0; hour < 23; hour++)
@ -87,7 +90,8 @@ public final class TestHSSFDateUtil extends TestCase {
* Checks the conversion of a java.util.date to Excel on a day when
* Daylight Saving Time starts.
*/
public void testExcelConversionOnDSTStart() {
@Test
public void excelConversionOnDSTStart() {
TimeZone cet = TimeZone.getTimeZone("Europe/Copenhagen");
TimeZone.setDefault(cet);
Calendar cal = new GregorianCalendar(2004, CALENDAR_MARCH, 28);
@ -117,7 +121,8 @@ public final class TestHSSFDateUtil extends TestCase {
* Checks the conversion of an Excel date to a java.util.date on a day when
* Daylight Saving Time starts.
*/
public void testJavaConversionOnDSTStart() {
@Test
public void javaConversionOnDSTStart() {
TimeZone cet = TimeZone.getTimeZone("Europe/Copenhagen");
TimeZone.setDefault(cet);
Calendar cal = new GregorianCalendar(2004, CALENDAR_MARCH, 28);
@ -144,7 +149,8 @@ public final class TestHSSFDateUtil extends TestCase {
* Checks the conversion of a java.util.Date to Excel on a day when
* Daylight Saving Time ends.
*/
public void testExcelConversionOnDSTEnd() {
@Test
public void excelConversionOnDSTEnd() {
TimeZone cet = TimeZone.getTimeZone("Europe/Copenhagen");
TimeZone.setDefault(cet);
Calendar cal = new GregorianCalendar(2004, CALENDAR_OCTOBER, 31);
@ -167,7 +173,8 @@ public final class TestHSSFDateUtil extends TestCase {
* Checks the conversion of an Excel date to java.util.Date on a day when
* Daylight Saving Time ends.
*/
public void testJavaConversionOnDSTEnd() {
@Test
public void javaConversionOnDSTEnd() {
TimeZone cet = TimeZone.getTimeZone("Europe/Copenhagen");
TimeZone.setDefault(cet);
Calendar cal = new GregorianCalendar(2004, CALENDAR_OCTOBER, 31);
@ -186,7 +193,8 @@ public final class TestHSSFDateUtil extends TestCase {
/**
* Tests that we deal with time-zones properly
*/
public void testCalendarConversion() {
@Test
public void calendarConversion() {
GregorianCalendar date = new GregorianCalendar(2002, 0, 1, 12, 1, 1);
Date expected = date.getTime();
@ -226,7 +234,8 @@ public final class TestHSSFDateUtil extends TestCase {
/**
* Tests that we correctly detect date formats as such
*/
public void testIdentifyDateFormats() {
@Test
public void identifyDateFormats() {
// First up, try with a few built in date formats
short[] builtins = new short[] { 0x0e, 0x0f, 0x10, 0x16, 0x2d, 0x2e };
for(int i=0; i<builtins.length; i++) {
@ -329,7 +338,8 @@ public final class TestHSSFDateUtil extends TestCase {
* Test that against a real, test file, we still do everything
* correctly
*/
public void testOnARealFile() {
@Test
public void onARealFile() {
HSSFWorkbook workbook = HSSFTestDataSamples.openSampleWorkbook("DateFormats.xls");
HSSFSheet sheet = workbook.getSheetAt(0);
@ -386,7 +396,8 @@ public final class TestHSSFDateUtil extends TestCase {
assertTrue(HSSFDateUtil.isCellDateFormatted(cell));
}
public void testDateBug_2Excel() {
@Test
public void dateBug_2Excel() {
assertEquals(59.0, HSSFDateUtil.getExcelDate(createDate(1900, CALENDAR_FEBRUARY, 28), false), 0.00001);
assertEquals(61.0, HSSFDateUtil.getExcelDate(createDate(1900, CALENDAR_MARCH, 1), false), 0.00001);
@ -396,7 +407,8 @@ public final class TestHSSFDateUtil extends TestCase {
assertEquals(38074.00, HSSFDateUtil.getExcelDate(createDate(2004, CALENDAR_MARCH, 28), false), 0.00001);
}
public void testDateBug_2Java() {
@Test
public void dateBug_2Java() {
assertEquals(createDate(1900, CALENDAR_FEBRUARY, 28), HSSFDateUtil.getJavaDate(59.0, false));
assertEquals(createDate(1900, CALENDAR_MARCH, 1), HSSFDateUtil.getJavaDate(61.0, false));
@ -406,7 +418,8 @@ public final class TestHSSFDateUtil extends TestCase {
assertEquals(createDate(2004, CALENDAR_MARCH, 28), HSSFDateUtil.getJavaDate(38074.00, false));
}
public void testDate1904() {
@Test
public void date1904() {
assertEquals(createDate(1904, CALENDAR_JANUARY, 2), HSSFDateUtil.getJavaDate(1.0, true));
assertEquals(createDate(1904, CALENDAR_JANUARY, 1), HSSFDateUtil.getJavaDate(0.0, true));
assertEquals(0.0, HSSFDateUtil.getExcelDate(createDate(1904, CALENDAR_JANUARY, 1), true), 0.00001);
@ -441,7 +454,8 @@ public final class TestHSSFDateUtil extends TestCase {
/**
* Check if HSSFDateUtil.getAbsoluteDay works as advertised.
*/
public void testAbsoluteDay() {
@Test
public void absoluteDay() {
// 1 Jan 1900 is 1 day after 31 Dec 1899
GregorianCalendar calendar = new GregorianCalendar(1900, 0, 1);
assertEquals("Checking absolute day (1 Jan 1900)", 1, HSSFDateUtil.absoluteDay(calendar, false));
@ -450,7 +464,8 @@ public final class TestHSSFDateUtil extends TestCase {
assertEquals("Checking absolute day (1 Jan 1901)", 366, HSSFDateUtil.absoluteDay(calendar, false));
}
public void testConvertTime() {
@Test
public void convertTime() {
final double delta = 1E-7; // a couple of digits more accuracy than strictly required
assertEquals(0.5, HSSFDateUtil.convertTime("12:00"), delta);
@ -459,7 +474,8 @@ public final class TestHSSFDateUtil extends TestCase {
assertEquals(0.7330440, HSSFDateUtil.convertTime("17:35:35"), delta);
}
public void testParseDate() {
@Test
public void parseDate() {
assertEquals(createDate(2008, Calendar.AUGUST, 3), HSSFDateUtil.parseYYYYMMDDDate("2008/08/03"));
assertEquals(createDate(1994, Calendar.MAY, 1), HSSFDateUtil.parseYYYYMMDDDate("1994/05/01"));
}
@ -467,7 +483,8 @@ public final class TestHSSFDateUtil extends TestCase {
/**
* Ensure that date values *with* a fractional portion get the right time of day
*/
public void testConvertDateTime() {
@Test
public void convertDateTime() {
// Excel day 30000 is date 18-Feb-1982
// 0.7 corresponds to time 16:48:00
Date actual = HSSFDateUtil.getJavaDate(30000.7);
@ -479,7 +496,8 @@ public final class TestHSSFDateUtil extends TestCase {
* User reported a datetime issue in POI-2.5:
* Setting Cell's value to Jan 1, 1900 without a time doesn't return the same value set to
*/
public void testBug19172()
@Test
public void bug19172()
{
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet sheet = workbook.createSheet();
@ -503,10 +521,24 @@ public final class TestHSSFDateUtil extends TestCase {
* DateUtil.isCellFormatted(Cell) should not true for a numeric cell
* that's formatted as ".0000"
*/
public void testBug54557() throws Exception {
@Test
public void bug54557() throws Exception {
final String format = ".0000";
boolean isDateFormat = HSSFDateUtil.isADateFormat(165, format);
assertEquals(false, isDateFormat);
}
@Test
public void bug56269() throws Exception {
double excelFraction = 41642.45833321759d;
Calendar calNoRound = HSSFDateUtil.getJavaCalendar(excelFraction, false);
assertEquals(10, calNoRound.get(Calendar.HOUR));
assertEquals(59, calNoRound.get(Calendar.MINUTE));
assertEquals(59, calNoRound.get(Calendar.SECOND));
Calendar calRound = HSSFDateUtil.getJavaCalendar(excelFraction, false, null, true);
assertEquals(11, calRound.get(Calendar.HOUR));
assertEquals(0, calRound.get(Calendar.MINUTE));
assertEquals(0, calRound.get(Calendar.SECOND));
}
}