com.squareup.square.core.DateTimeDeserializer Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of square Show documentation

Java client library for the Square API

The newest version!

/**
 * This file was auto-generated by Fern from our API Definition.
 */
package com.squareup.square.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 {
    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);
            }
        }
    }
}