private static FilterSpecPlanPathTripletForge HandleOrAlternateExpression(
ExprOrNode orNode,
bool performConditionPlanning,
IDictionary <string, Pair <EventType, string> > taggedEventTypes,
IDictionary <string, Pair <EventType, string> > arrayEventTypes,
ISet <string> allTagNamesOrdered,
string statementName,
StreamTypeService streamTypeService,
StatementRawInfo raw,
StatementCompileTimeServices services)
{
IList <ExprNode> valueExpressions = new List <ExprNode>(orNode.ChildNodes.Length);
foreach (ExprNode child in orNode.ChildNodes)
{
FilterSpecExprNodeVisitorValueLimitedExpr visitor = new FilterSpecExprNodeVisitorValueLimitedExpr();
child.Accept(visitor);
if (visitor.IsLimited)
{
valueExpressions.Add(child);
}
}
// The or-node must have a single constituent and one or more value expressions
if (orNode.ChildNodes.Length != valueExpressions.Count + 1)
{
return(null);
}
IList <ExprNode> constituents = new List <ExprNode>(orNode.ChildNodes);
constituents.RemoveAll(valueExpressions);
if (constituents.Count != 1)
{
throw new IllegalStateException("Found multiple constituents");
}
ExprNode constituent = constituents[0];
FilterSpecPlanPathTripletForge triplet = MakeFilterParam(
constituent,
performConditionPlanning,
taggedEventTypes,
arrayEventTypes,
allTagNamesOrdered,
statementName,
streamTypeService,
raw,
services);
if (triplet == null)
{
return(null);
}
ExprNode controlConfirm = ExprNodeUtilityMake.ConnectExpressionsByLogicalOrWhenNeeded(valueExpressions);
return(new FilterSpecPlanPathTripletForge(triplet.Param, controlConfirm));
}
internal static ExprNode DecomposePopulateConsolidate(
FilterSpecParaForgeMap filterParamExprMap,
bool performConditionPlanning,
IList<ExprNode> validatedNodes,
FilterSpecCompilerArgs args)
{
var constituents = DecomposeCheckAggregation(validatedNodes);
// Remove constituents that are value-expressions
ExprNode topLevelControl = null;
if (performConditionPlanning) {
IList<ExprNode> valueOnlyConstituents = null;
foreach (var node in constituents) {
var visitor = new FilterSpecExprNodeVisitorValueLimitedExpr();
node.Accept(visitor);
if (visitor.IsLimited) {
if (valueOnlyConstituents == null) {
valueOnlyConstituents = new List<ExprNode>();
}
valueOnlyConstituents.Add(node);
}
}
if (valueOnlyConstituents != null) {
constituents.RemoveAll(valueOnlyConstituents);
topLevelControl = ExprNodeUtilityMake.ConnectExpressionsByLogicalAndWhenNeeded(valueOnlyConstituents);
}
}
// Make filter parameter for each expression node, if it can be optimized
foreach (var constituent in constituents) {
var triplet = FilterSpecCompilerIndexPlannerConstituent.MakeFilterParam(
constituent,
performConditionPlanning,
args.taggedEventTypes,
args.arrayEventTypes,
args.allTagNamesOrdered,
args.statementRawInfo.StatementName,
args.streamTypeService,
args.statementRawInfo,
args.compileTimeServices);
filterParamExprMap.Put(constituent, triplet); // accepts null values as the expression may not be optimized
}
// Consolidate entries as possible, i.e. (a != 5 and a != 6) is (a not in (5,6))
// Removes duplicates for same property and same filter operator for filter service index optimizations
FilterSpecCompilerConsolidateUtil.Consolidate(filterParamExprMap, args.statementRawInfo.StatementName);
return topLevelControl;
}
private static IList <ExprNode> GetNonValueChildNodes(ExprOrNode orNode)
{
IList <ExprNode> childNodes = new List <ExprNode>(orNode.ChildNodes.Length);
foreach (var node in orNode.ChildNodes)
{
var visitor = new FilterSpecExprNodeVisitorValueLimitedExpr();
node.Accept(visitor);
if (!visitor.IsLimited)
{
childNodes.Add(node);
}
}
return(childNodes);
}
private static void FindValueExpr(
ExprNode child,
ExprNode parent,
AtomicReference<IList<ExprNodeWithParentPair>> pairsRef)
{
var valueVisitor = new FilterSpecExprNodeVisitorValueLimitedExpr();
child.Accept(valueVisitor);
// not by itself a value expression, but itself it may decompose into some value expressions
if (!valueVisitor.IsLimited) {
FindValueExpressionsDeepRecursive(child, pairsRef);
return;
}
// add value expression, don't traverse child
IList<ExprNodeWithParentPair> pairs = pairsRef.Get();
if (pairs == null) {
pairs = new List<ExprNodeWithParentPair>(2);
pairsRef.Set(pairs);
}
pairs.Add(new ExprNodeWithParentPair(child, parent));
}
internal static bool IsLimitedValueExpression(ExprNode node)
{
var visitor = new FilterSpecExprNodeVisitorValueLimitedExpr();
node.Accept(visitor);
return visitor.IsLimited;
}
