org.apache.poi.ss.formula.functions
Class BooleanFunction

java.lang.Object
  org.apache.poi.ss.formula.functions.BooleanFunction

All Implemented Interfaces:

Function

public abstract class BooleanFunction
extends java.lang.Object
implements Function

Here are the general rules concerning Boolean functions:

1. Blanks are ignored (not either true or false)
2. Strings are ignored if part of an area ref or cell ref, otherwise they must be 'true' or 'false'
3. Numbers: 0 is false. Any other number is TRUE
4. Areas: *all* cells in area are evaluated according to the above rules

AND

public static final Function AND

OR

public static final Function OR

FALSE

public static final Function FALSE

TRUE

public static final Function TRUE

NOT

public static final Function NOT

BooleanFunction

public BooleanFunction()

evaluate

public final ValueEval evaluate(ValueEval[] args,
                                int srcRow,
                                int srcCol)

Specified by:

evaluate in interface Function

Parameters:

args - the evaluated function arguments. Empty values are represented with BlankEval or MissingArgEval, never null.

srcRow - row index of the cell containing the formula under evaluation

srcCol - column index of the cell containing the formula under evaluation

Returns:

The evaluated result, possibly an ErrorEval, never null. Note - Excel uses the error code #NUM! instead of IEEE NaN, so when numeric functions evaluate to Double.NaN be sure to translate the result to ErrorEval.NUM_ERROR.

getInitialResultValue

protected abstract boolean getInitialResultValue()

partialEvaluate

protected abstract boolean partialEvaluate(boolean cumulativeResult,
                                           boolean currentValue)