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[Java.time] Support partial parsing #46814

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Merged
merged 2 commits into from
Oct 10, 2019
Merged

[Java.time] Support partial parsing #46814

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6055a82
partial parsing and fix tests
pgomulka Sep 18, 2019
74bf94f
Merge branch 'master' into feature/partial_parsing2
elasticmachine Oct 9, 2019
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6 changes: 6 additions & 0 deletions server/src/main/java/org/elasticsearch/common/time/DateFormatters.java
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Original file line number Diff line number Diff line change
Expand Up @@ -58,10 +58,14 @@ public class DateFormatters {

private static final DateTimeFormatter STRICT_YEAR_MONTH_DAY_FORMATTER = new DateTimeFormatterBuilder()
.appendValue(ChronoField.YEAR, 4, 10, SignStyle.EXCEEDS_PAD)
.optionalStart()
.appendLiteral("-")
.appendValue(MONTH_OF_YEAR, 2, 2, SignStyle.NOT_NEGATIVE)
.optionalStart()
.appendLiteral('-')
.appendValue(DAY_OF_MONTH, 2, 2, SignStyle.NOT_NEGATIVE)
.optionalEnd()
.optionalEnd()
.toFormatter(IsoLocale.ROOT);

private static final DateTimeFormatter STRICT_HOUR_MINUTE_SECOND_FORMATTER = new DateTimeFormatterBuilder()
Expand Down Expand Up @@ -922,12 +926,14 @@ public class DateFormatters {

private static final DateTimeFormatter DATE_FORMATTER = new DateTimeFormatterBuilder()
.appendValue(ChronoField.YEAR, 1, 5, SignStyle.NORMAL)
.optionalStart()
.appendLiteral('-')
.appendValue(MONTH_OF_YEAR, 1, 2, SignStyle.NOT_NEGATIVE)
.optionalStart()
.appendLiteral('-')
.appendValue(DAY_OF_MONTH, 1, 2, SignStyle.NOT_NEGATIVE)
.optionalEnd()
.optionalEnd()
.toFormatter(IsoLocale.ROOT);

private static final DateTimeFormatter HOUR_MINUTE_FORMATTER = new DateTimeFormatterBuilder()
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28 changes: 28 additions & 0 deletions server/src/test/java/org/elasticsearch/common/joda/JavaJodaTimeDuellingTests.java
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Expand Up @@ -46,6 +46,28 @@ public class JavaJodaTimeDuellingTests extends ESTestCase {
protected boolean enableWarningsCheck() {
return false;
}
// date_optional part of a parser names "strict_date_optional_time" or "date_optional"time
// means that date part can be partially parsed.
public void testPartialParsing() {
assertSameDateAs("2001", "strict_date_optional_time_nanos", "strict_date_optional_time");
assertSameDateAs("2001-01", "strict_date_optional_time_nanos", "strict_date_optional_time");
assertSameDateAs("2001-01-01", "strict_date_optional_time_nanos", "strict_date_optional_time");

assertSameDate("2001", "strict_date_optional_time");
assertSameDate("2001-01", "strict_date_optional_time");
assertSameDate("2001-01-01", "strict_date_optional_time");

assertSameDate("2001", "date_optional_time");
assertSameDate("2001-01", "date_optional_time");
assertSameDate("2001-01-01", "date_optional_time");


assertSameDateAs("2001", "iso8601", "strict_date_optional_time");
assertSameDateAs("2001-01", "iso8601", "strict_date_optional_time");
assertSameDateAs("2001-01-01", "iso8601", "strict_date_optional_time");

assertSameDate("9999","date_optional_time||epoch_second");
}

public void testCompositeDateMathParsing(){
//in all these examples the second pattern will be used
Expand Down Expand Up @@ -890,4 +912,10 @@ private void assertDateMathEquals(String text, String pattern) {

assertEquals(gotMillisJoda, gotMillisJava);
}

private void assertSameDateAs(String input, String javaPattern, String jodaPattern) {
DateFormatter javaFormatter = DateFormatter.forPattern(javaPattern);
DateFormatter jodaFormatter = Joda.forPattern(jodaPattern);
assertSameDate(input, javaPattern, jodaFormatter, javaFormatter);
}
}
9 changes: 5 additions & 4 deletions server/src/test/java/org/elasticsearch/common/time/JavaDateMathParserTests.java
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Expand Up @@ -258,10 +258,11 @@ public void testTimestamps() {
long datetime = parser.parse("1418248078", () -> 0).toEpochMilli();
assertDateEquals(datetime, "1418248078", "2014-12-10T21:47:58.000");

// a timestamp before 10000 is a year
assertDateMathEquals("9999", "1970-01-01T00:00:09.999Z");
// 10000 is also a year, breaking bwc, used to be a timestamp
assertDateMathEquals("10000", "1970-01-01T00:00:10.000Z");
// a timestamp before 100000 is a year
assertDateMathEquals("9999", "9999-01-01T00:00:00.000");
assertDateMathEquals("10000", "10000-01-01T00:00:00.000");
assertDateMathEquals("100000", "1970-01-01T00:01:40.000");

// but 10000 with T is still a date format
assertDateMathEquals("10000-01-01T", "10000-01-01T00:00:00.000");
}
Expand Down