Method: EpochBasedDateTimeSerializer()

1: /*
2: * JB4JSON-LD
3: * Copyright (C) 2023 Czech Technical University in Prague
4: *
5: * This library is free software; you can redistribute it and/or
6: * modify it under the terms of the GNU Lesser General Public
7: * License as published by the Free Software Foundation; either
8: * version 3.0 of the License, or (at your option) any later version.
9: *
10: * This library is distributed in the hope that it will be useful,
11: * but WITHOUT ANY WARRANTY; without even the implied warranty of
12: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13: * Lesser General Public License for more details.
14: *
15: * You should have received a copy of the GNU Lesser General Public
16: * License along with this library.
17: */
18: package cz.cvut.kbss.jsonld.serialization.serializer.compact.datetime;
19:
20: import cz.cvut.kbss.jsonld.serialization.JsonNodeFactory;
21: import cz.cvut.kbss.jsonld.serialization.model.JsonNode;
22: import cz.cvut.kbss.jsonld.serialization.serializer.datetime.DateTimeSerializer;
23: import cz.cvut.kbss.jsonld.serialization.traversal.SerializationContext;
24:
25: import java.time.OffsetDateTime;
26: import java.time.temporal.TemporalAccessor;
27:
28: /**
29: * Serializes datetime as the amount of milliseconds since epoch at UTC time zone.
30: */
31: public class EpochBasedDateTimeSerializer extends DateTimeSerializer {
32:
33: @Override
34: public JsonNode serialize(OffsetDateTime value, SerializationContext<TemporalAccessor> ctx) {
35: return JsonNodeFactory.createLiteralNode(ctx.getTerm(), value.toInstant().toEpochMilli());
36: }
37: }