org.apache.poi.ss.formula.functions

Interface ArrayFunction

All Known Implementing Classes:

BooleanFunction, IfFunc, LogicalFunction, RelationalOperationEval, TwoOperandNumericOperation, UnaryMinusEval, UnaryPlusEval

public interface ArrayFunction

Author:

Robert Hulbert Common Interface for any excel built-in function that has implemented array formula functionality.

Method Summary

Modifier and Type	Method and Description
ValueEval	evaluateArray(ValueEval[] args, int srcRowIndex, int srcColumnIndex)
default ValueEval	evaluateOneArrayArg(ValueEval arg0, int srcRowIndex, int srcColumnIndex, java.util.function.Function<ValueEval,ValueEval> evalFunc)
default ValueEval	evaluateTwoArrayArgs(ValueEval arg0, ValueEval arg1, int srcRowIndex, int srcColumnIndex, java.util.function.BiFunction<ValueEval,ValueEval,ValueEval> evalFunc) Evaluate an array function with two arguments.

Method Detail

evaluateArray

ValueEval evaluateArray(ValueEval[] args,
                        int srcRowIndex,
                        int srcColumnIndex)

Parameters:

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

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

srcColumnIndex - 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.

evaluateTwoArrayArgs

default ValueEval evaluateTwoArrayArgs(ValueEval arg0,
                                       ValueEval arg1,
                                       int srcRowIndex,
                                       int srcColumnIndex,
                                       java.util.function.BiFunction<ValueEval,ValueEval,ValueEval> evalFunc)

Evaluate an array function with two arguments.

Parameters:

arg0 - the first function argument. Empty values are represented with BlankEval or MissingArgEval, never null

arg1 - the first function argument. Empty values are represented with

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

srcColumnIndex - 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.

evaluateOneArrayArg

default ValueEval evaluateOneArrayArg(ValueEval arg0,
                                      int srcRowIndex,
                                      int srcColumnIndex,
                                      java.util.function.Function<ValueEval,ValueEval> evalFunc)