Class DCountA
- java.lang.Object
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- org.apache.poi.ss.formula.functions.DCountA
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- All Implemented Interfaces:
IDStarAlgorithm
public final class DCountA extends Object implements IDStarAlgorithm
Implementation of the DCountA function: Counts the number of non-blank cells in a column in an area with given conditions.
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Constructor Summary
Constructors Constructor Description DCountA()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
allowEmptyMatchField()
Whether the field value (the 2nd param in DCOUNT, DGET, etc.) can evaluate to empty.ValueEval
getResult()
Return a result ValueEval that will be the result of the calculation.boolean
processMatch(ValueEval eval)
Process a match that is found during a run through a database.
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Method Detail
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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 interfaceIDStarAlgorithm
- Parameters:
eval
- ValueEval of the cell in the matching row. References will already be resolved.- Returns:
- Whether we should continue iterating through the database.
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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 interfaceIDStarAlgorithm
- Returns:
- a ValueEval
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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 interfaceIDStarAlgorithm
- Returns:
- whether the field value can evaluate to empty
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