internal override GremlinToSqlContext GetContext()
{
GremlinToSqlContext inputContext = GetInputContext();
if (inputContext.PivotVariable == null)
{
throw new QueryCompilationException("The PivotVariable can't be null.");
}
switch (Type)
{
//has(key)
case GremlinHasType.HasProperty:
inputContext.PivotVariable.Has(inputContext, PropertyKey);
break;
//hasNot(key)
case GremlinHasType.HasNotProperty:
inputContext.PivotVariable.HasNot(inputContext, PropertyKey);
break;
//has(key, value) | has(key, predicate)
case GremlinHasType.HasPropertyValueOrPredicate:
inputContext.PivotVariable.Has(inputContext, PropertyKey, ValueOrPredicate);
break;
//has(key, traversal)
case GremlinHasType.HasPropertyTraversal:
Traversal.GetStartOp().InheritedVariableFromParent(inputContext);
if (Traversal.GetStartOp() is GremlinParentContextOp)
{
if (Traversal.TranslationOpList.Count > 1)
{
Traversal.InsertOperator(1, new GremlinValuesOp(PropertyKey));
}
else
{
Traversal.AddOperator(new GremlinValuesOp(PropertyKey));
}
}
GremlinToSqlContext hasContext = Traversal.GetEndOp().GetContext();
inputContext.AddPredicate(hasContext.ToSqlBoolean());
break;
//has(label, key, value) | has(label, key, predicate)
case GremlinHasType.HasLabelPropertyValue:
inputContext.PivotVariable.Has(inputContext, GremlinKeyword.Label, Label);
inputContext.PivotVariable.Has(inputContext, PropertyKey, ValueOrPredicate);
break;
//hasId(values)
case GremlinHasType.HasId:
case GremlinHasType.HasLabel:
inputContext.PivotVariable.HasIdOrLabel(inputContext, Type, ValuesOrPredicates);
break;
//===================================================================
//hasKey(values) || hasValue(values)
case GremlinHasType.HasKey:
case GremlinHasType.HasValue:
inputContext.PivotVariable.HasKeyOrValue(inputContext, Type, ValuesOrPredicates);
break;
}
return(inputContext);
}
