Package org.apache.poi.ss.formula.functions

Class DCount

java.lang.Object
org.apache.poi.ss.formula.functions.DCount
All Implemented Interfaces:
IDStarAlgorithm
public final class DCount extends Object implements IDStarAlgorithm
Implementation of the DCount function: Counts the number of numeric cells in a column in an area with given conditions.

  • Constructor Details

    • DCount

      public DCount()

  • Method Details

    • processMatch

      public boolean processMatch(ValueEval eval)
      Description copied from interface: IDStarAlgorithm
      Process a match that is found during a run through a database.
      Specified by:
      processMatch in interface IDStarAlgorithm
      Parameters:
      eval - ValueEval of the cell in the matching row. References will already be resolved.
      Returns:
      Whether we should continue iterating through the database.

    • getResult

      public ValueEval getResult()
      Description copied from interface: IDStarAlgorithm
      Return a result ValueEval that will be the result of the calculation. This is always called at the end of a run through the database.
      Specified by:
      getResult in interface IDStarAlgorithm
      Returns:
      a ValueEval

    • allowEmptyMatchField

      public boolean allowEmptyMatchField()
      Description copied from interface: IDStarAlgorithm
      Whether the field value (the 2nd param in DCOUNT, DGET, etc.) can evaluate to empty. It is allowed to evaluate to empty for DCOUNT.
      Specified by:
      allowEmptyMatchField in interface IDStarAlgorithm
      Returns:
      whether the field value can evaluate to empty