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use FastISODateParser.parseAsEpochMilli

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Compared to FastISODateParser.parse, which returns an
OffsetDateTime object, parseAsEpochMilli returns the
epoch time millis. The performance improvement for
date parsing alone is roughly 100% (8m dates/s to
18m dates/s).
Insertion speed improved from 13-14s for 1.6m entries
to 11.5-12.5s.
This commit is contained in:
Andreas Huber
2018-12-16 19:24:47 +01:00
parent 23f800a441
commit 40f4506e13
9 changed files with 40 additions and 108 deletions
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4
pdb-ui/src/test/java/org/lucares/pdbui/date/FastISODateParserTest.java
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@@ -126,7 +126,7 @@ public class FastISODateParserTest {
@Test(dataProvider = "providerDateToTimestamp")
public void testDateToTimestamp(final String date) {
final long actualEpochMilli = new FastISODateParser().parseAsTimestamp(date);
final long actualEpochMilli = new FastISODateParser().parseAsEpochMilli(date);
final OffsetDateTime expectedDate = OffsetDateTime.from(DateTimeFormatter.ISO_DATE_TIME.parse(date));
final long expectedEpochMilli = expectedDate.toInstant().toEpochMilli();
@@ -178,7 +178,7 @@ public class FastISODateParserTest {
final FastISODateParser fastISODateParser = new FastISODateParser();
for (final String date : dates) {
fastISODateParser.parseAsTimestamp(date);
fastISODateParser.parseAsEpochMilli(date);
// final long timestamp =
// fastISODateParser.parse(date).toInstant().toEpochMilli();
// final long timestamp = OffsetDateTime.parse(date, DateTimeFormatter.ISO_OFFSET_DATE_TIME)