public static GremlinUnionVariable Create(List <GremlinToSqlContext> unionContextList)
{
if (unionContextList.Count == 0)
{
return(new GremlinUnionNullVariable(unionContextList));
}
if (GremlinUtil.IsTheSameOutputType(unionContextList))
{
switch (unionContextList.First().PivotVariable.GetVariableType())
{
case GremlinVariableType.Vertex:
return(new GremlinUnionVertexVariable(unionContextList));
case GremlinVariableType.Edge:
return(new GremlinUnionEdgeVariable(unionContextList));
case GremlinVariableType.Scalar:
return(new GremlinUnionScalarVariable(unionContextList));
case GremlinVariableType.NULL:
return(new GremlinUnionNullVariable(unionContextList));
case GremlinVariableType.Property:
return(new GremlinUnionPropertyVariable(unionContextList));
}
}
return(new GremlinUnionTableVariable(unionContextList));
}
public static GremlinCoalesceVariable Create(List <GremlinToSqlContext> coalesceContextList)
{
if (GremlinUtil.IsTheSameOutputType(coalesceContextList))
{
switch (coalesceContextList.First().PivotVariable.GetVariableType())
{
case GremlinVariableType.Vertex:
return(new GremlinCoalesceVertexVariable(coalesceContextList));
case GremlinVariableType.Edge:
return(new GremlinCoalesceEdgeVariable(coalesceContextList));
case GremlinVariableType.Scalar:
return(new GremlinCoalesceScalarVariable(coalesceContextList));
case GremlinVariableType.Property:
return(new GremlinCoalescePropertyVariable(coalesceContextList));
}
}
return(new GremlinCoalesceTableVariable(coalesceContextList));
}