Exemplo n.º 1
0
        /// <summary>
        ///     Add a vertex to a graph only if no other vertex in the provided Index is indexed by the property key/value pair.
        ///     If a vertex already exists with that key/value pair, return the pre-existing vertex.
        /// </summary>
        /// <param name="graph">the graph to add the vertex to</param>
        /// <param name="id">the id of the vertex to create (can be null)</param>
        /// <param name="index">the index to determine if another vertex with the same key/value exists</param>
        /// <param name="uniqueKey">the key to check on for uniqueness of the vertex</param>
        /// <param name="uniqueValue">the value to check on for uniqueness of the vertex</param>
        /// <returns>the newly created vertex or the vertex that satisfies the uniqueness criteria</returns>
        public static IVertex AddUniqueVertex(this IIndexableGraph graph, object id, IIndex index, string uniqueKey,
                                              object uniqueValue)
        {
            if (graph == null)
            {
                throw new ArgumentNullException(nameof(graph));
            }
            if (index == null)
            {
                throw new ArgumentNullException(nameof(index));
            }
            if (string.IsNullOrWhiteSpace(uniqueKey))
            {
                throw new ArgumentNullException(nameof(uniqueKey));
            }

            var result = (IVertex)index.Get(uniqueKey, uniqueValue).FirstOrDefault();

            if (result == null)
            {
                result = graph.AddVertex(id);
                result.SetProperty(uniqueKey, uniqueValue);
            }
            return(result);
        }
 public PartitionIndexableGraph(IIndexableGraph baseIndexableGraph, string writeGraphKey, string readWriteGraph)
     : base(baseIndexableGraph, writeGraphKey, readWriteGraph)
 {
     if (baseIndexableGraph == null)
     {
         throw new ArgumentNullException(nameof(baseIndexableGraph));
     }
 }
Exemplo n.º 3
0
        public WrappedIndexableGraph(IIndexableGraph baseIndexableGraph)
            : base(baseIndexableGraph)
        {
            if (baseIndexableGraph == null)
            {
                throw new ArgumentNullException(nameof(baseIndexableGraph));
            }

            _baseIndexableGraph = baseIndexableGraph;
        }
        public EventTransactionalIndexableGraph(IIndexableGraph baseIndexableGraph)
            : base(baseIndexableGraph)
        {
            if (!(baseIndexableGraph is ITransactionalGraph))
            {
                throw new ArgumentException("baseIndexableGraph must be of type ITransactionalGraph");
            }

            TransactionalGraph = baseIndexableGraph as ITransactionalGraph;
            Trigger            = new EventTrigger(this, true);
        }
        public PartitionIndexableGraph(IIndexableGraph baseIndexableGraph, string writeGraphKey, string writeGraph,
                                       IEnumerable <string> readGraphs)
            : base(baseIndexableGraph, writeGraphKey, writeGraph, readGraphs)
        {
            if (baseIndexableGraph == null)
            {
                throw new ArgumentNullException(nameof(baseIndexableGraph));
            }
            if (readGraphs == null)
            {
                throw new ArgumentNullException(nameof(readGraphs));
            }

            BaseIndexableGraph = baseIndexableGraph;
        }