How to use

execute

method

in

org.apache.tinkerpop.gremlin.process.computer.VertexProgram

@Override
public void process(TitanVertex vertex, ScanMetrics metrics) {
  PreloadedVertex v = (PreloadedVertex)vertex;
  long vertexId = v.longId();
  VertexMemoryHandler<M> vh = new VertexMemoryHandler(vertexMemory,v);
  v.setAccessCheck(PreloadedVertex.OPENSTAR_CHECK);
  if (idManager.isPartitionedVertex(vertexId)) {
    if (idManager.isCanonicalVertexId(vertexId)) {
      EntryList results = v.getFromCache(SYSTEM_PROPS_QUERY);
      if (results == null) results = EntryList.EMPTY_LIST;
      vertexMemory.setLoadedProperties(vertexId,results);
    }
    for (MessageScope scope : vertexMemory.getPreviousScopes()) {
      if (scope instanceof MessageScope.Local) {
        M combinedMsg = null;
        for (Iterator<M> msgIter = vh.receiveMessages(scope).iterator(); msgIter.hasNext(); ) {
          M msg = msgIter.next();
          if (combinedMsg==null) combinedMsg=msg;
          else combinedMsg = combiner.combine(combinedMsg,msg);
        }
        if (combinedMsg!=null) vertexMemory.aggregateMessage(vertexId,combinedMsg,scope);
      }
    }
  } else {
    v.setPropertyMixing(vh);
    vertexProgram.execute(v, vh, memory);
  }
}

v.setPropertyMixing(vh);
try {
  vertexProgram.execute(v, vh, memory);
} catch (ReadOnlyTransactionException e) {

final Vertex vertex = vertices.next();
if (Thread.interrupted()) throw new TraversalInterruptedException();
vertexProgram.execute(
    ComputerGraph.vertexProgram(vertex, vertexProgram),
    new TinkerMessenger<>(vertex, this.messageBoard, vertexProgram.getMessageCombiner()),

workerVertexProgram.execute(ComputerGraph.vertexProgram(vertex, workerVertexProgram), messenger, memory); // execute the vertex program on this vertex for this iteration

@Override
public void process(TitanVertex vertex, ScanMetrics metrics) {
  PreloadedVertex v = (PreloadedVertex)vertex;
  long vertexId = v.longId();
  VertexMemoryHandler<M> vh = new VertexMemoryHandler(vertexMemory,v);
  v.setAccessCheck(PreloadedVertex.OPENSTAR_CHECK);
  if (idManager.isPartitionedVertex(vertexId)) {
    if (idManager.isCanonicalVertexId(vertexId)) {
      EntryList results = v.getFromCache(SYSTEM_PROPS_QUERY);
      if (results == null) results = EntryList.EMPTY_LIST;
      vertexMemory.setLoadedProperties(vertexId,results);
    }
    for (MessageScope scope : vertexMemory.getPreviousScopes()) {
      if (scope instanceof MessageScope.Local) {
        M combinedMsg = null;
        for (Iterator<M> msgIter = vh.receiveMessages(scope).iterator(); msgIter.hasNext(); ) {
          M msg = msgIter.next();
          if (combinedMsg==null) combinedMsg=msg;
          else combinedMsg = combiner.combine(combinedMsg,msg);
        }
        if (combinedMsg!=null) vertexMemory.aggregateMessage(vertexId,combinedMsg,scope);
      }
    }
  } else {
    v.setPropertyMixing(vh);
    vertexProgram.execute(v, vh, memory);
  }
}

final Vertex vertex = vertices.next();
if (Thread.interrupted()) throw new TraversalInterruptedException();
vertexProgram.execute(
    ComputerGraph.vertexProgram(vertex, vertexProgram),
    new TinkerMessenger<>(vertex, this.messageBoard, vertexProgram.getMessageCombiner()),

final Vertex vertex = vertices.next();
if (Thread.interrupted()) throw new TraversalInterruptedException();
vertexProgram.execute(
    ComputerGraph.vertexProgram(vertex, vertexProgram),
    new TinkerMessenger<>(vertex, this.messageBoard, vertexProgram.getMessageCombiner()),

workerVertexProgram.execute(ComputerGraph.vertexProgram(vertex, workerVertexProgram), messenger, memory); // execute the vertex program on this vertex for this iteration

workerVertexProgram.execute(ComputerGraph.vertexProgram(vertex, workerVertexProgram), messenger, memory); // execute the vertex program on this vertex for this iteration