import com.google.gson.JsonArray;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
-
-import java.util.*;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
import java.util.stream.Collectors;
-
import org.apache.tinkerpop.gremlin.structure.Direction;
import org.apache.tinkerpop.gremlin.structure.Edge;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.onap.aai.introspection.Loader;
import org.onap.aai.serialization.db.DBSerializer;
import org.onap.aai.serialization.queryformats.exceptions.AAIFormatVertexException;
-import org.onap.aai.serialization.queryformats.params.Depth;
import org.onap.aai.serialization.queryformats.params.AsTree;
+import org.onap.aai.serialization.queryformats.params.Depth;
import org.onap.aai.serialization.queryformats.params.NodesOnly;
import org.onap.aai.serialization.queryformats.utils.UrlBuilder;
json.addProperty(prop.key(), list);
} else {
// throw exception?
- return null;
+ return Optional.empty();
}
}
json.addProperty(prop.key(), gson.toJson(prop.value()));
} else {
// throw exception?
- return null;
+ return Optional.empty();
}
}
} else {