Esempio n. 1
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 @Override
 public TitanType getType(String name) {
   verifyOpen();
   TitanType type = typeCache.get(name);
   if (type == null)
     type = (TitanType) Iterables.getOnlyElement(getVertices(SystemKey.TypeName, name), null);
   return type;
 }
Esempio n. 2
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 @Override
 public TitanVertex getVertex(TitanKey key, Object attribute) {
   Preconditions.checkArgument(
       key.isUnique(Direction.IN), "Key is not uniquely associated to value [%s]", key.getName());
   return Iterables.getOnlyElement(getVertices(key, attribute), null);
 }