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package org.opentripplanner.framework.json;

import com.fasterxml.jackson.databind.JsonNode;
import java.util.Optional;
import javax.annotation.Nonnull;

public class JsonUtils {

  public static Optional asText(@Nonnull JsonNode node, @Nonnull String field) {
    JsonNode valueNode = node.get(field);
    if (valueNode == null) {
      return Optional.empty();
    }
    String value = valueNode.asText();
    return value.isEmpty() ? Optional.empty() : Optional.of(value);
  }
}