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);
}
public virtual void ModulateBy(GremlinKeyword.Column column, IComparer comparer)
{
ModulateBy(GraphTraversal2.__().Select(column), comparer);
}
public virtual void ModulateBy(GremlinKeyword.Column column, GremlinKeyword.Order order)
{
ModulateBy(GraphTraversal2.__().Select(column), order);
}
public virtual void ModulateBy(string key, IComparer comparer)
{
ModulateBy(GraphTraversal2.__().Values(key), comparer);
}
public override void ModulateBy()
{
ByTraversal = GraphTraversal2.__();
}
public override void ModulateBy(string key, IComparer comparer)
{
ByModulatingMap.Add(new Tuple <object, IComparer>(GraphTraversal2.__().Values(key), comparer));
}
public virtual void ModulateBy(string key, GremlinKeyword.Order order)
{
ModulateBy(GraphTraversal2.__().Values(key), order);
}
public virtual void ModulateBy()
{
ModulateBy(GraphTraversal2.__());
}
/// <summary>
/// Only valid for VertexProperty
/// </summary>
internal virtual void HasKeyOrValue(GremlinToSqlContext currentContext, GremlinHasType hasType, List <object> valuesOrPredicates)
{
GraphTraversal2 traversal2 = hasType == GremlinHasType.HasKey ? GraphTraversal2.__().Key() : GraphTraversal2.__().Value();
traversal2.GetStartOp().InheritedVariableFromParent(currentContext);
GremlinToSqlContext existContext = traversal2.GetEndOp().GetContext();
List <WBooleanExpression> booleanExprList = new List <WBooleanExpression>();
GremlinVariableProperty defaultVariableProperty = existContext.PivotVariable.DefaultProjection();
foreach (var valuesOrPredicate in valuesOrPredicates)
{
booleanExprList.Add(CreateBooleanExpression(defaultVariableProperty, valuesOrPredicate));
}
existContext.AddPredicate(SqlUtil.ConcatBooleanExprWithOr(booleanExprList));
currentContext.AddPredicate(SqlUtil.GetExistPredicate(existContext.ToSelectQueryBlock()));
}
public GremlinToOp(string stepLabel)
{
ToVertexTraversal = GraphTraversal2.__().Select(stepLabel);
}
public GremlinFromOp(string stepLabel)
{
FromVertexTraversal = GraphTraversal2.__().Select(GremlinKeyword.Pop.last, stepLabel);
}
public GremlinDedupOp(params string[] dedupLabels)
{
this.DedupLabels = new List <string>(dedupLabels);
this.ByTraversal = GraphTraversal2.__();
}
public GraphTraversal2 Choose(Predicate choosePredicate, GraphTraversal2 trueChoice, GraphTraversal2 falseChoice = null)
{
GraphTraversal2 traversalPredicate = GraphTraversal2.__().Is(choosePredicate);
return(Choose(traversalPredicate, trueChoice, falseChoice));
}
public virtual void ModulateBy(GremlinKeyword.Order order)
{
ModulateBy(GraphTraversal2.__(), order);
}
public override void ModulateBy(string key)
{
ByList.Add(GraphTraversal2.__().Values(key));
}
public virtual void ModulateBy(IComparer comparer)
{
ModulateBy(GraphTraversal2.__(), comparer);
}
public override void ModulateBy()
{
ByList.Add(GraphTraversal2.__());
}
public virtual void ModulateBy(string key)
{
ModulateBy(GraphTraversal2.__().Values(key));
}
public override void ModulateBy(string key)
{
ByTraversal = GraphTraversal2.__().Values(key);
}
public GremlinAggregateOp(string sideEffectKey)
{
SideEffectKey = sideEffectKey;
ByTraversal = GraphTraversal2.__();
}
public GraphTraversal2 Where(string startKey, Predicate predicate)
{
//AddGremlinOperator(new GremlinWhereOp(startKey, predicate));
AddGremlinOperator(new GremlinWhereOp(GraphTraversal2.__().V().Has(startKey, predicate)));
return(this);
}
