Upgrade to java.time API for date and time handling

eclipse-rdf4j / rdf4j

Eclipse RDF4J: scalable RDF for Java

https://rdf4j.org/

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Upgrade to java.time API for date and time handling #2563

Open abrokenjester opened 4 years ago

abrokenjester commented 4 years ago

We use the old java.util.Date in several places in the core API. We should upgrade to the new java.time API since it is far superior and the recommended way of handling dates and times since Java 8.

See https://www.baeldung.com/java-8-date-time-intro

Subtasks:

[x] update Model API: Value and ValueFactory (#2658)
[ ] update SPARQL evaluation: XMLDatatypeUtil and XMLDatatype
[ ] update SPARQL functions: now(), month(), etc.

knoan commented 4 years ago

Likely to be an epic touching SPARQL evaluation, value comparison, …

Opened a dedicated issue (#2658) to start groundwork on Value/ValueFactory.

knoan commented 3 years ago

A tentative list of other intervention areas:

Literals.createLiteral()
Literals.getTemporalAccessor/AmountValue() (see https://github.com/eclipse/rdf4j/pull/2659#issuecomment-728227741)
org.eclipse.rdf4j.query.QueryResults.bindingSetsMatch()
org.eclipse.rdf4j.query.algebra.evaluation.util.ValueComparator
deprecate Literal.getCalendarValue() and ValueFactory.creteLiteral(XMLGregorianCalendar/Date)

knoan commented 3 years ago

lenient temporal literal parsing in RIO