public void Apply(QueryGraphForge filterQueryGraph)
{
if (targetStreamNum == parameterStreamNum) {
return;
}
var targetStartExpr = ExprNodeUtilityMake.MakeExprIdentNode(
typesPerStream,
targetStreamNum,
targetStartProp);
var targetEndExpr = ExprNodeUtilityMake.MakeExprIdentNode(typesPerStream, targetStreamNum, targetEndProp);
var parameterStartExpr = ExprNodeUtilityMake.MakeExprIdentNode(
typesPerStream,
parameterStreamNum,
parameterStartProp);
var parameterEndExpr = ExprNodeUtilityMake.MakeExprIdentNode(
typesPerStream,
parameterStreamNum,
parameterEndProp);
if (targetStartExpr.Forge.EvaluationType != parameterStartExpr.Forge.EvaluationType) {
return;
}
if (currentMethod == DateTimeMethodEnum.BEFORE) {
// a.end < b.start
filterQueryGraph.AddRelationalOpStrict(
targetStreamNum,
targetEndExpr,
parameterStreamNum,
parameterStartExpr,
RelationalOpEnum.LT);
}
else if (currentMethod == DateTimeMethodEnum.AFTER) {
// a.start > b.end
filterQueryGraph.AddRelationalOpStrict(
targetStreamNum,
targetStartExpr,
parameterStreamNum,
parameterEndExpr,
RelationalOpEnum.GT);
}
else if (currentMethod == DateTimeMethodEnum.COINCIDES) {
// a.startTimestamp = b.startTimestamp and a.endTimestamp = b.endTimestamp
filterQueryGraph.AddStrictEquals(
targetStreamNum,
targetStartProp,
targetStartExpr,
parameterStreamNum,
parameterStartProp,
parameterStartExpr);
var noDuration = parameterEndProp.Equals(parameterStartProp) && targetEndProp.Equals(targetStartProp);
if (!noDuration) {
var leftEndExpr = ExprNodeUtilityMake.MakeExprIdentNode(
typesPerStream,
targetStreamNum,
targetEndProp);
var rightEndExpr = ExprNodeUtilityMake.MakeExprIdentNode(
typesPerStream,
parameterStreamNum,
parameterEndProp);
filterQueryGraph.AddStrictEquals(
targetStreamNum,
targetEndProp,
leftEndExpr,
parameterStreamNum,
parameterEndProp,
rightEndExpr);
}
}
else if (currentMethod == DateTimeMethodEnum.DURING || currentMethod == DateTimeMethodEnum.INCLUDES) {
// DURING: b.startTimestamp < a.startTimestamp <= a.endTimestamp < b.endTimestamp
// INCLUDES: a.startTimestamp < b.startTimestamp <= b.endTimestamp < a.endTimestamp
var relop = currentMethod == DateTimeMethodEnum.DURING ? RelationalOpEnum.LT : RelationalOpEnum.GT;
filterQueryGraph.AddRelationalOpStrict(
parameterStreamNum,
parameterStartExpr,
targetStreamNum,
targetStartExpr,
relop);
filterQueryGraph.AddRelationalOpStrict(
targetStreamNum,
targetEndExpr,
parameterStreamNum,
parameterEndExpr,
relop);
}
else if (currentMethod == DateTimeMethodEnum.FINISHES || currentMethod == DateTimeMethodEnum.FINISHEDBY) {
// FINISHES: b.startTimestamp < a.startTimestamp and a.endTimestamp = b.endTimestamp
// FINISHEDBY: a.startTimestamp < b.startTimestamp and a.endTimestamp = b.endTimestamp
var relop = currentMethod == DateTimeMethodEnum.FINISHES ? RelationalOpEnum.LT : RelationalOpEnum.GT;
filterQueryGraph.AddRelationalOpStrict(
parameterStreamNum,
parameterStartExpr,
targetStreamNum,
targetStartExpr,
relop);
filterQueryGraph.AddStrictEquals(
targetStreamNum,
targetEndProp,
targetEndExpr,
parameterStreamNum,
parameterEndProp,
parameterEndExpr);
}
else if (currentMethod == DateTimeMethodEnum.MEETS) {
// a.endTimestamp = b.startTimestamp
filterQueryGraph.AddStrictEquals(
targetStreamNum,
targetEndProp,
targetEndExpr,
parameterStreamNum,
parameterStartProp,
parameterStartExpr);
}
else if (currentMethod == DateTimeMethodEnum.METBY) {
// a.startTimestamp = b.endTimestamp
filterQueryGraph.AddStrictEquals(
targetStreamNum,
targetStartProp,
targetStartExpr,
parameterStreamNum,
parameterEndProp,
parameterEndExpr);
}
else if (currentMethod == DateTimeMethodEnum.OVERLAPS || currentMethod == DateTimeMethodEnum.OVERLAPPEDBY) {
// OVERLAPS: a.startTimestamp < b.startTimestamp < a.endTimestamp < b.endTimestamp
// OVERLAPPEDBY: b.startTimestamp < a.startTimestamp < b.endTimestamp < a.endTimestamp
var relop = currentMethod == DateTimeMethodEnum.OVERLAPS ? RelationalOpEnum.LT : RelationalOpEnum.GT;
filterQueryGraph.AddRelationalOpStrict(
targetStreamNum,
targetStartExpr,
parameterStreamNum,
parameterStartExpr,
relop);
filterQueryGraph.AddRelationalOpStrict(
targetStreamNum,
targetEndExpr,
parameterStreamNum,
parameterEndExpr,
relop);
if (currentMethod == DateTimeMethodEnum.OVERLAPS) {
filterQueryGraph.AddRelationalOpStrict(
parameterStreamNum,
parameterStartExpr,
targetStreamNum,
targetEndExpr,
RelationalOpEnum.LT);
}
else {
filterQueryGraph.AddRelationalOpStrict(
targetStreamNum,
targetStartExpr,
parameterStreamNum,
parameterEndExpr,
RelationalOpEnum.LT);
}
}
else if (currentMethod == DateTimeMethodEnum.STARTS || currentMethod == DateTimeMethodEnum.STARTEDBY) {
// STARTS: a.startTimestamp = b.startTimestamp and a.endTimestamp < b.endTimestamp
// STARTEDBY: a.startTimestamp = b.startTimestamp and b.endTimestamp < a.endTimestamp
filterQueryGraph.AddStrictEquals(
targetStreamNum,
targetStartProp,
targetStartExpr,
parameterStreamNum,
parameterStartProp,
parameterStartExpr);
var relop = currentMethod == DateTimeMethodEnum.STARTS ? RelationalOpEnum.LT : RelationalOpEnum.GT;
filterQueryGraph.AddRelationalOpStrict(
targetStreamNum,
targetEndExpr,
parameterStreamNum,
parameterEndExpr,
relop);
}
}
public void Apply(QueryGraphForge queryGraph)
{
var targetExpr = ExprNodeUtilityMake.MakeExprIdentNode(typesPerStream, targetStreamNum, targetPropertyName);
RangeFilterAnalyzer.Apply(targetExpr, start, end, includeLow, includeHigh, false, queryGraph);
}
