internal virtual GremlinSelectVariable GetSelectVar(GremlinToSqlContext currentContext, GremlinKeyword.Pop pop, List <string> selectKeys, List <GraphTraversal2> byList = null)
{
//TODO: refactor
if (byList == null)
{
byList = new List <GraphTraversal2>()
{
GraphTraversal2.__()
};
}
List <GremlinToSqlContext> byContexts = new List <GremlinToSqlContext>();
List <GremlinVariable> steps = currentContext.GetGlobalPathStepList();
List <GremlinVariable> sideEffectVariables = currentContext.GetSideEffectVariables();
GremlinGlobalPathVariable pathVariable = new GremlinGlobalPathVariable(steps);
currentContext.VariableList.Add(pathVariable);
currentContext.TableReferences.Add(pathVariable);
foreach (var by in byList)
{
GremlinToSqlContext newContext = new GremlinToSqlContext();
GremlinDecompose1Variable decompose1 = new GremlinDecompose1Variable(pathVariable);
newContext.VariableList.Add(decompose1);
newContext.TableReferences.Add(decompose1);
newContext.SetPivotVariable(decompose1);
by.GetStartOp().InheritedContextFromParent(newContext);
byContexts.Add(by.GetEndOp().GetContext());
}
GremlinSelectVariable newVariable = new GremlinSelectVariable(this, pathVariable, sideEffectVariables, pop, selectKeys, byContexts);
currentContext.VariableList.Add(newVariable);
currentContext.TableReferences.Add(newVariable);
return(newVariable);
}