Class DStarRunner
java.lang.Object
org.apache.poi.ss.formula.functions.DStarRunner
- All Implemented Interfaces:
Function,Function3Arg
This class performs a D* calculation. It takes an
IDStarAlgorithm object and
uses it for calculating the result value. Iterating a database and checking the
entries against the set of conditions is done here.
TODO:
- wildcards ? and * in string conditions
- functions as conditions-
Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionstatic enumEnum for convenience to identify and source implementations of the D* functions -
Constructor Summary
Constructors -
Method Summary
-
Constructor Details
-
DStarRunner
- Parameters:
algorithm- to implement
-
-
Method Details
-
evaluate
- Specified by:
evaluatein interfaceFunction- Parameters:
args- the evaluated function arguments. Empty values are represented withBlankEvalorMissingArgEval, nevernull.srcRowIndex- row index of the cell containing the formula under evaluationsrcColumnIndex- column index of the cell containing the formula under evaluation- Returns:
- The evaluated result, possibly an
ErrorEval, nevernull. Note - Excel uses the error code #NUM! instead of IEEE NaN, so when numeric functions evaluate toDouble.NaNbe sure to translate the result toErrorEval.NUM_ERROR.
-
evaluate
public ValueEval evaluate(int srcRowIndex, int srcColumnIndex, ValueEval database, ValueEval filterColumn, ValueEval conditionDatabase) Description copied from interface:Function3Arg- Specified by:
evaluatein interfaceFunction3Arg
-