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h2database
Unverified 提交 9098cb27 authored 作者: Noel Grandin's avatar Noel Grandin 提交者： GitHub
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Merge pull request #847 from katzyn/datetime 

Reimplement remaining parts of EXTRACT, ISO_YEAR, etc without a Calendar
上级 5a61101b 8f5800e8
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正在显示 包含 395 行增加 和 252 行删除
h2/src/main/org/h2/expression/Function.java
浏览文件 @ 9098cb27
......@@ -108,6 +108,11 @@ public class Function extends Expression implements FunctionCall {
FORMATDATETIME = 121, PARSEDATETIME = 122, ISO_YEAR = 123,
ISO_WEEK = 124, ISO_DAY_OF_WEEK = 125;
/**
* Pseudo function for {@code EXTRACT(MILLISECOND FROM ...)}.
*/
public static final int MILLISECOND = 126;
public static final int DATABASE = 150, USER = 151, CURRENT_USER = 152,
IDENTITY = 153, SCOPE_IDENTITY = 154, AUTOCOMMIT = 155,
READONLY = 156, DATABASE_PATH = 157, LOCK_TIMEOUT = 158,
......@@ -158,39 +163,39 @@ public class Function extends Expression implements FunctionCall {
static {
// DATE_PART
DATE_PART.put("SQL_TSI_YEAR", Calendar.YEAR);
DATE_PART.put("YEAR", Calendar.YEAR);
DATE_PART.put("YYYY", Calendar.YEAR);
DATE_PART.put("YY", Calendar.YEAR);
DATE_PART.put("SQL_TSI_MONTH", Calendar.MONTH);
DATE_PART.put("MONTH", Calendar.MONTH);
DATE_PART.put("MM", Calendar.MONTH);
DATE_PART.put("M", Calendar.MONTH);
DATE_PART.put("SQL_TSI_WEEK", Calendar.WEEK_OF_YEAR);
DATE_PART.put("WW", Calendar.WEEK_OF_YEAR);
DATE_PART.put("WK", Calendar.WEEK_OF_YEAR);
DATE_PART.put("WEEK", Calendar.WEEK_OF_YEAR);
DATE_PART.put("DAY", Calendar.DAY_OF_MONTH);
DATE_PART.put("DD", Calendar.DAY_OF_MONTH);
DATE_PART.put("D", Calendar.DAY_OF_MONTH);
DATE_PART.put("SQL_TSI_DAY", Calendar.DAY_OF_MONTH);
DATE_PART.put("DAYOFYEAR", Calendar.DAY_OF_YEAR);
DATE_PART.put("DAY_OF_YEAR", Calendar.DAY_OF_YEAR);
DATE_PART.put("DY", Calendar.DAY_OF_YEAR);
DATE_PART.put("DOY", Calendar.DAY_OF_YEAR);
DATE_PART.put("SQL_TSI_HOUR", Calendar.HOUR_OF_DAY);
DATE_PART.put("HOUR", Calendar.HOUR_OF_DAY);
DATE_PART.put("HH", Calendar.HOUR_OF_DAY);
DATE_PART.put("SQL_TSI_MINUTE", Calendar.MINUTE);
DATE_PART.put("MINUTE", Calendar.MINUTE);
DATE_PART.put("MI", Calendar.MINUTE);
DATE_PART.put("N", Calendar.MINUTE);
DATE_PART.put("SQL_TSI_SECOND", Calendar.SECOND);
DATE_PART.put("SECOND", Calendar.SECOND);
DATE_PART.put("SS", Calendar.SECOND);
DATE_PART.put("S", Calendar.SECOND);
DATE_PART.put("MILLISECOND", Calendar.MILLISECOND);
DATE_PART.put("MS", Calendar.MILLISECOND);
DATE_PART.put("SQL_TSI_YEAR", YEAR);
DATE_PART.put("YEAR", YEAR);
DATE_PART.put("YYYY", YEAR);
DATE_PART.put("YY", YEAR);
DATE_PART.put("SQL_TSI_MONTH", MONTH);
DATE_PART.put("MONTH", MONTH);
DATE_PART.put("MM", MONTH);
DATE_PART.put("M", MONTH);
DATE_PART.put("SQL_TSI_WEEK", WEEK);
DATE_PART.put("WW", WEEK);
DATE_PART.put("WK", WEEK);
DATE_PART.put("WEEK", WEEK);
DATE_PART.put("DAY", DAY_OF_MONTH);
DATE_PART.put("DD", DAY_OF_MONTH);
DATE_PART.put("D", DAY_OF_MONTH);
DATE_PART.put("SQL_TSI_DAY", DAY_OF_MONTH);
DATE_PART.put("DAYOFYEAR", DAY_OF_YEAR);
DATE_PART.put("DAY_OF_YEAR", DAY_OF_YEAR);
DATE_PART.put("DY", DAY_OF_YEAR);
DATE_PART.put("DOY", DAY_OF_YEAR);
DATE_PART.put("SQL_TSI_HOUR", HOUR);
DATE_PART.put("HOUR", HOUR);
DATE_PART.put("HH", HOUR);
DATE_PART.put("SQL_TSI_MINUTE", MINUTE);
DATE_PART.put("MINUTE", MINUTE);
DATE_PART.put("MI", MINUTE);
DATE_PART.put("N", MINUTE);
DATE_PART.put("SQL_TSI_SECOND", SECOND);
DATE_PART.put("SECOND", SECOND);
DATE_PART.put("SS", SECOND);
DATE_PART.put("S", SECOND);
DATE_PART.put("MILLISECOND", MILLISECOND);
DATE_PART.put("MS", MILLISECOND);
// SOUNDEX_INDEX
String index = "7AEIOUY8HW1BFPV2CGJKQSXZ3DT4L5MN6R";
......@@ -837,22 +842,19 @@ public class Function extends Expression implements FunctionCall {
break;
}
case DAY_OF_MONTH:
result = ValueInt.get(DateTimeUtils.getDatePart(v0, Calendar.DAY_OF_MONTH));
break;
case DAY_OF_WEEK:
result = ValueInt.get(DateTimeUtils.getDatePart(v0, Calendar.DAY_OF_WEEK));
break;
case DAY_OF_YEAR:
result = ValueInt.get(DateTimeUtils.getDatePart(v0, Calendar.DAY_OF_YEAR));
break;
case HOUR:
result = ValueInt.get(DateTimeUtils.getDatePart(v0, Calendar.HOUR_OF_DAY));
break;
case MINUTE:
result = ValueInt.get(DateTimeUtils.getDatePart(v0, Calendar.MINUTE));
break;
case MONTH:
result = ValueInt.get(DateTimeUtils.getDatePart(v0, Calendar.MONTH));
case QUARTER:
case ISO_YEAR:
case ISO_WEEK:
case ISO_DAY_OF_WEEK:
case SECOND:
case WEEK:
case YEAR:
result = ValueInt.get(DateTimeUtils.getDatePart(v0, info.type));
break;
case MONTH_NAME: {
SimpleDateFormat monthName = new SimpleDateFormat("MMMM",
......@@ -861,27 +863,6 @@ public class Function extends Expression implements FunctionCall {
database.getMode().treatEmptyStringsAsNull);
break;
}
case QUARTER:
result = ValueInt.get((DateTimeUtils.getDatePart(v0, Calendar.MONTH) - 1) / 3 + 1);
break;
case SECOND:
result = ValueInt.get(DateTimeUtils.getDatePart(v0, Calendar.SECOND));
break;
case WEEK:
result = ValueInt.get(DateTimeUtils.getDatePart(v0, Calendar.WEEK_OF_YEAR));
break;
case YEAR:
result = ValueInt.get(DateTimeUtils.getDatePart(v0, Calendar.YEAR));
break;
case ISO_YEAR:
result = ValueInt.get(DateTimeUtils.getIsoYear(v0));
break;
case ISO_WEEK:
result = ValueInt.get(DateTimeUtils.getIsoWeek(v0));
break;
case ISO_DAY_OF_WEEK:
result = ValueInt.get(DateTimeUtils.getIsoDayOfWeek(v0));
break;
case CURDATE:
case CURRENT_DATE: {
long now = session.getTransactionStart();
......@@ -1827,11 +1808,39 @@ public class Function extends Expression implements FunctionCall {
private static Timestamp dateadd(String part, long count, Timestamp d) {
int field = getDatePart(part);
if (field == Calendar.MILLISECOND) {
switch (field) {
case YEAR:
field = Calendar.YEAR;
break;
case MONTH:
field = Calendar.MONTH;
break;
case DAY_OF_MONTH:
field = Calendar.DAY_OF_MONTH;
break;
case DAY_OF_YEAR:
field = Calendar.DAY_OF_YEAR;
break;
case WEEK:
field = Calendar.WEEK_OF_YEAR;
break;
case HOUR:
field = Calendar.HOUR_OF_DAY;
break;
case MINUTE:
field = Calendar.MINUTE;
break;
case SECOND:
field = Calendar.SECOND;
break;
case MILLISECOND: {
Timestamp ts = new Timestamp(d.getTime() + count);
ts.setNanos(ts.getNanos() + (d.getNanos() % 1000000));
return ts;
}
default:
throw DbException.getUnsupportedException("DATEADD " + part);
}
// We allow long for manipulating the millisecond component,
// for the rest we only allow int.
if (count > Integer.MAX_VALUE) {
......@@ -1878,34 +1887,34 @@ public class Function extends Expression implements FunctionCall {
calendar.get(Calendar.DAY_OF_WEEK),
calendar.get(Calendar.MILLISECOND));
switch (field) {
case Calendar.MILLISECOND:
case MILLISECOND:
return t2 - t1;
case Calendar.SECOND:
case Calendar.MINUTE:
case Calendar.HOUR_OF_DAY:
case Calendar.DAY_OF_YEAR:
case Calendar.WEEK_OF_YEAR: {
case SECOND:
case MINUTE:
case HOUR:
case DAY_OF_YEAR:
case WEEK: {
// first 'normalize' the numbers so both are not negative
long hour = 60 * 60 * 1000;
long add = Math.min(t1 / hour * hour, t2 / hour * hour);
t1 -= add;
t2 -= add;
switch (field) {
case Calendar.SECOND:
case SECOND:
return t2 / 1000 - t1 / 1000;
case Calendar.MINUTE:
case MINUTE:
return t2 / (60 * 1000) - t1 / (60 * 1000);
case Calendar.HOUR_OF_DAY:
case HOUR:
return t2 / hour - t1 / hour;
case Calendar.DAY_OF_YEAR:
case DAY_OF_YEAR:
return t2 / (hour * 24) - t1 / (hour * 24);
case Calendar.WEEK_OF_YEAR:
case WEEK:
return t2 / (hour * 24 * 7) - t1 / (hour * 24 * 7);
default:
throw DbException.throwInternalError("field:" + field);
}
}
case Calendar.DATE:
case DAY_OF_MONTH:
return t2 / (24 * 60 * 60 * 1000) - t1 / (24 * 60 * 60 * 1000);
default:
break;
......@@ -1918,9 +1927,9 @@ public class Function extends Expression implements FunctionCall {
int year2 = calendar.get(Calendar.YEAR);
int month2 = calendar.get(Calendar.MONTH);
int result = year2 - year1;
if (field == Calendar.MONTH) {
if (field == MONTH) {
return 12 * result + (month2 - month1);
} else if (field == Calendar.YEAR) {
} else if (field == YEAR) {
return result;
} else {
throw DbException.getUnsupportedException("DATEDIFF " + part);
......
h2/src/test/org/h2/test/unit/TestDateTimeUtils.java
浏览文件 @ 9098cb27
......@@ -5,6 +5,9 @@
*/
package org.h2.test.unit;
import java.util.Calendar;
import java.util.GregorianCalendar;
import org.h2.test.TestBase;
import org.h2.util.DateTimeUtils;
......@@ -25,6 +28,8 @@ public class TestDateTimeUtils extends TestBase {
@Override
public void test() throws Exception {
testParseTimeNanosDB2Format();
testDayOfWeek();
testWeekOfYear();
}
private void testParseTimeNanosDB2Format() {
......@@ -34,4 +39,55 @@ public class TestDateTimeUtils extends TestBase {
assertEquals(3723000000000L, DateTimeUtils.parseTimeNanos("01:02:03", 0, 8, true));
assertEquals(3723000000000L, DateTimeUtils.parseTimeNanos("01.02.03", 0, 8, true));
}
/**
* Test for {@link DateTimeUtils#getSundayDayOfWeek()} and
* {@link DateTimeUtils#getIsoDayOfWeek(long)}.
*/
private void testDayOfWeek() {
GregorianCalendar gc = DateTimeUtils.createGregorianCalendar();
for (int i = -1_000_000; i <= 1_000_000; i++) {
gc.clear();
gc.setTimeInMillis(i * 86400000L);
int year = gc.get(Calendar.YEAR);
if (gc.get(Calendar.ERA) == GregorianCalendar.BC) {
year = 1 - year;
}
long expectedDateValue = DateTimeUtils.dateValue(year, gc.get(Calendar.MONTH) + 1,
gc.get(Calendar.DAY_OF_MONTH));
long dateValue = DateTimeUtils.dateValueFromAbsoluteDay(i);
assertEquals(expectedDateValue, dateValue);
assertEquals(i, DateTimeUtils.absoluteDayFromDateValue(dateValue));
int dow = gc.get(Calendar.DAY_OF_WEEK);
assertEquals(dow, DateTimeUtils.getSundayDayOfWeek(dateValue));
int isoDow = (dow + 5) % 7 + 1;
assertEquals(isoDow, DateTimeUtils.getIsoDayOfWeek(dateValue));
assertEquals(gc.get(Calendar.WEEK_OF_YEAR),
DateTimeUtils.getWeekOfYear(dateValue, gc.getFirstDayOfWeek() - 1, gc.getMinimalDaysInFirstWeek()));
}
}
/**
* Test for {@link DateTimeUtils#getDayOfYear(long)},
* {@link DateTimeUtils#getWeekOfYear(long, int, int)} and
* {@link DateTimeUtils#getWeekYear(long, int, int)}.
*/
private void testWeekOfYear() {
GregorianCalendar gc = new GregorianCalendar(DateTimeUtils.UTC);
for (int firstDay = 1; firstDay <= 7; firstDay++) {
gc.setFirstDayOfWeek(firstDay);
for (int minimalDays = 1; minimalDays <= 7; minimalDays++) {
gc.setMinimalDaysInFirstWeek(minimalDays);
for (int i = 0; i < 150_000; i++) {
long dateValue = DateTimeUtils.dateValueFromAbsoluteDay(i);
gc.clear();
gc.setTimeInMillis(i * 86400000L);
assertEquals(gc.get(Calendar.DAY_OF_YEAR), DateTimeUtils.getDayOfYear(dateValue));
assertEquals(gc.get(Calendar.WEEK_OF_YEAR), DateTimeUtils.getWeekOfYear(dateValue, firstDay - 1, minimalDays));
assertEquals(gc.getWeekYear(), DateTimeUtils.getWeekYear(dateValue, firstDay - 1, minimalDays));
}
}
}
}
}
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