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DateTimeDeserializer.java
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55 lines (49 loc) · 1.99 KB
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/**
* This file was auto-generated by Fern from our API Definition.
*/
package com.seam.api.core;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.module.SimpleModule;
import java.io.IOException;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.OffsetDateTime;
import java.time.ZoneOffset;
import java.time.format.DateTimeFormatter;
import java.time.temporal.TemporalAccessor;
import java.time.temporal.TemporalQueries;
/**
* Custom deserializer that handles converting ISO8601 dates into {@link OffsetDateTime} objects.
*/
class DateTimeDeserializer extends JsonDeserializer<OffsetDateTime> {
private static final SimpleModule MODULE;
static {
MODULE = new SimpleModule().addDeserializer(OffsetDateTime.class, new DateTimeDeserializer());
}
/**
* Gets a module wrapping this deserializer as an adapter for the Jackson ObjectMapper.
*
* @return A {@link SimpleModule} to be plugged onto Jackson ObjectMapper.
*/
public static SimpleModule getModule() {
return MODULE;
}
@Override
public OffsetDateTime deserialize(JsonParser parser, DeserializationContext context) throws IOException {
JsonToken token = parser.currentToken();
if (token == JsonToken.VALUE_NUMBER_INT) {
return OffsetDateTime.ofInstant(Instant.ofEpochSecond(parser.getValueAsLong()), ZoneOffset.UTC);
} else {
TemporalAccessor temporal = DateTimeFormatter.ISO_DATE_TIME.parseBest(
parser.getValueAsString(), OffsetDateTime::from, LocalDateTime::from);
if (temporal.query(TemporalQueries.offset()) == null) {
return LocalDateTime.from(temporal).atOffset(ZoneOffset.UTC);
} else {
return OffsetDateTime.from(temporal);
}
}
}
}