public GraphTraversal2 Property(string key, object value, params object[] keyValues)
{
if (keyValues.Length % 2 != 0)
{
throw new Exception("The parameter of property should be even");
}
GremlinAddEOp addE = GetEndOp() as GremlinAddEOp;
GremlinAddVOp addV = GetEndOp() as GremlinAddVOp;
if (addE != null)
{
if (keyValues.Length > 0)
{
throw new SyntaxErrorException("Edge can't have meta properties");
}
addE.EdgeProperties.Add(new GremlinProperty(GremlinKeyword.PropertyCardinality.Single, key, value, null));
}
else if (addV != null && keyValues.Length == 0)
{
addV.VertexProperties.Add(new GremlinProperty(GremlinKeyword.PropertyCardinality.List, key, value, null));
}
else
{
return(this.Property(GremlinKeyword.PropertyCardinality.Single, key, value, keyValues));
}
return(this);
}
public GraphTraversal2 From(GraphTraversal2 fromVertexTraversal)
{
GremlinAddEOp addEOp = GetEndOp() as GremlinAddEOp;
if (addEOp != null)
{
addEOp.FromVertexTraversal = fromVertexTraversal;
}
else
{
throw new SyntaxErrorException($"{GetEndOp()} cannot be cast to GremlinAddEOp");
}
return(this);
}
public GraphTraversal2 From(string fromLabel)
{
GremlinAddEOp addEOp = GetEndOp() as GremlinAddEOp;
if (addEOp != null)
{
addEOp.FromVertexTraversal = GraphTraversal2.__().Select(fromLabel);
}
else
{
throw new SyntaxErrorException($"{GetEndOp()} cannot be cast to GremlinAddEOp");
}
return(this);
}