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interface RolapCalculation
Entry in the evaluation context that indicates a calculation that needs to be performed before we get to the atomic stored cells.
Most of the time it's just members that are calculated, but calculated tuples arise when the slicer is a set of tuples.
The evaluator uses this interface to efficiently expand a member or tuple from the evaluation context. When evaluated, a calculation will change one or more elements of the context (calculated members just change one, but tuple sets in the slicer can change more than one).
Method Summary | |
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boolean |
containsAggregateFunction()
Returns whether this calculation contains an aggregate function. |
Calc |
getCompiledExpression(RolapEvaluatorRoot root)
Returns the compiled expression to evaluate the scalar value of the current cell. |
int |
getHierarchyOrdinal()
Returns the ordinal of this calculation; to resolve ties. |
int |
getSolveOrder()
Returns the solve order of this calculation. |
boolean |
isCalculatedInQuery()
Returns whether this calculation is a member is computed from a WITH MEMBER clause in an MDX query. |
RolapEvaluator |
pushSelf(RolapEvaluator evaluator)
Pushes this calculated member or tuple onto the stack of evaluation contexts, sets the context to the default member of the hierarchy, and returns the evaluator containing the new context. |
Method Detail |
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RolapEvaluator pushSelf(RolapEvaluator evaluator)
evaluator
- Current evaluator
int getSolveOrder()
int getHierarchyOrdinal()
boolean isCalculatedInQuery()
WITH MEMBER
clause in an MDX query.
Calc getCompiledExpression(RolapEvaluatorRoot root)
root
- Root evaluation context
boolean containsAggregateFunction()
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