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Java Library to call Mindee's Off-The-Shelf and Custom APIs

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package com.mindee.parsing.common;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import java.io.IOException;
import java.time.LocalDateTime;
import java.time.ZoneOffset;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeFormatterBuilder;
import java.time.temporal.TemporalAccessor;

/**
 * Deserializer for LocalDateTime
 */
class LocalDateTimeDeserializer extends JsonDeserializer {
  @Override
  public LocalDateTime deserialize(
      JsonParser jsonParser,
      DeserializationContext deserializationContext) throws IOException {
    DateTimeFormatter formatter = new DateTimeFormatterBuilder()
        .parseCaseInsensitive()
        .append(DateTimeFormatter.ISO_LOCAL_DATE)
        .appendLiteral('T')
        .append(DateTimeFormatter.ISO_LOCAL_TIME)
        .optionalStart()
        .appendOffsetId()
        .toFormatter();
    String dateString = jsonParser.getValueAsString();
    TemporalAccessor temporalAccessor = formatter.parseBest(dateString, ZonedDateTime::from,
        LocalDateTime::from);
    if (temporalAccessor instanceof ZonedDateTime) {
      return ((ZonedDateTime) temporalAccessor).withZoneSameInstant(ZoneOffset.UTC)
          .toLocalDateTime();
    } else {
      return ((LocalDateTime) temporalAccessor);
    }
  }
}