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TemporalSerializer.java
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TemporalSerializer.java
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package cz.cvut.kbss.jsonld.serialization.datetime;
import cz.cvut.kbss.jopa.vocabulary.XSD;
import cz.cvut.kbss.jsonld.ConfigParam;
import cz.cvut.kbss.jsonld.Configuration;
import cz.cvut.kbss.jsonld.JsonLd;
import cz.cvut.kbss.jsonld.exception.UnsupportedTemporalTypeException;
import cz.cvut.kbss.jsonld.serialization.JsonNodeFactory;
import cz.cvut.kbss.jsonld.serialization.ValueSerializer;
import cz.cvut.kbss.jsonld.serialization.model.JsonNode;
import cz.cvut.kbss.jsonld.serialization.model.ObjectNode;
import cz.cvut.kbss.jsonld.serialization.traversal.SerializationContext;
import java.time.*;
import java.time.format.DateTimeFormatter;
import java.time.temporal.TemporalAccessor;
/**
* Serializes Java 8 date/time values represented by the {@link TemporalAccessor} interface.
*/
public class TemporalSerializer implements ValueSerializer<TemporalAccessor> {
private DateTimeSerializer dateTimeSerializer = new IsoDateTimeSerializer();
@Override
public JsonNode serialize(TemporalAccessor value, SerializationContext<TemporalAccessor> ctx) {
if (value instanceof LocalDate) {
return JsonNodeFactory.createTypedValueNode(ctx.getAttributeId(),
((LocalDate) value).format(DateTimeFormatter.ISO_DATE),
XSD.DATE);
} else if (value instanceof OffsetTime) {
return TimeSerializer.serialize((OffsetTime) value, ctx);
} else if (value instanceof LocalTime) {
return TimeSerializer.serialize((LocalTime) value, ctx);
} else if (value instanceof OffsetDateTime) {
return dateTimeSerializer.serialize((OffsetDateTime) value, ctx);
} else if (value instanceof LocalDateTime) {
return dateTimeSerializer.serialize((LocalDateTime) value, ctx);
} else if (value instanceof Instant) {
return dateTimeSerializer.serialize((Instant) value, ctx);
} else if (value instanceof ZonedDateTime) {
return dateTimeSerializer.serialize(((ZonedDateTime) value).toOffsetDateTime(), ctx);
}
throw new UnsupportedTemporalTypeException(
"Temporal type " + value.getClass() + " serialization is not supported.");
}
@Override
public void configure(Configuration config) {
assert config != null;
this.dateTimeSerializer = config.is(ConfigParam.SERIALIZE_DATETIME_AS_MILLIS) ?
new EpochBasedDateTimeSerializer() : new IsoDateTimeSerializer();
dateTimeSerializer.configure(config);
}
}