Apache POI - Common 5.3.0 · org.apache.poi.ss.formula.functions.Days

Calculates the number of days between two dates based on a real year, which is used in some accounting calculations.

DAYS(end_date,start_date)

Start_date, end_date (required):
The two dates between which you want to know the number of days.
If start_date occurs after end_date, the DAYS function returns a negative number.

Field Summary

Modifier and Type	Field and Description
public static final Days	instance

Access	Constructor and Description
private	Days()

Modifier and Type	Method and Description
public ValueEval	evaluate(ValueEval[] the pre-evaluated arguments for this function. args is never `null`, nor are any of its elements. args, OperationEvaluationContext primarily used to identify the source cell containing the formula being evaluated. may also be used to dynamically create reference evals. ec) Implements org.apache.poi.ss.formula.functions.FreeRefFunction.evaluate.
private ValueEval	evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1)
private static double	evaluate(LocalDate endDate, LocalDate startDate)
pack-priv static LocalDate	getDate(ValueEval eval, int srcRowIndex, int srcColumnIndex)
private static LocalDate	getDate(double date)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

instance	back to summary
public static final Days instance

Days	back to summary
private Days()

evaluate back to summary

evaluate	back to summary
public ValueEval evaluate(ValueEval[] args, OperationEvaluationContext ec) Implements org.apache.poi.ss.formula.functions.FreeRefFunction.evaluate. Parameters args:ValueEval[] Doc from org.apache.poi.ss.formula.functions.FreeRefFunction.evaluate. the pre-evaluated arguments for this function. args is never `null`, nor are any of its elements. ec:OperationEvaluationContext Doc from org.apache.poi.ss.formula.functions.FreeRefFunction.evaluate. primarily used to identify the source cell containing the formula being evaluated. may also be used to dynamically create reference evals. Returns:ValueEval Doc from org.apache.poi.ss.formula.functions.FreeRefFunction.evaluate. never `null`. Possibly an instance of `ErrorEval` in the case of a specified Excel error (Exceptions are never thrown to represent Excel errors). Annotations @Override

Parameters

args:ValueEval[]

the pre-evaluated arguments for this function. args is never null, nor are any of its elements.

primarily used to identify the source cell containing the formula being evaluated. may also be used to dynamically create reference evals.

never null. Possibly an instance of ErrorEval in the case of a specified Excel error (Exceptions are never thrown to represent Excel errors).

Annotations

evaluate	back to summary
private ValueEval evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1)

evaluate	back to summary
private static double evaluate(LocalDate endDate, LocalDate startDate)

getDate	back to summary
pack-priv static LocalDate getDate(ValueEval eval, int srcRowIndex, int srcColumnIndex) throws EvaluationException

getDate	back to summary
private static LocalDate getDate(double date)