Package org.apache.poi.ss.formula.eval

Class ConcatEval

java.lang.Object

org.apache.poi.ss.formula.functions.Fixed2ArgFunction

org.apache.poi.ss.formula.eval.ConcatEval

All Implemented Interfaces:

ArrayFunction, Function, Function2Arg

public final class ConcatEval
extends Fixed2ArgFunction
implements ArrayFunction

Implementation of Excel formula token '&'.

Field Summary

Fields

Modifier and Type	Field	Description
static final Function	instance

Method Summary

Modifier and Type	Method	Description
ValueEval	evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1)	see Function.evaluate(ValueEval[], int, int)
ValueEval	evaluateArray(ValueEval[] args, int srcRowIndex, int srcColumnIndex)

Methods inherited from class org.apache.poi.ss.formula.functions.Fixed2ArgFunction

evaluate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.poi.ss.formula.functions.ArrayFunction

evaluateOneArrayArg, evaluateTwoArrayArgs

Field Details

instance

public static final Function instance

Method Details

evaluate

public ValueEval evaluate(int srcRowIndex,
 int srcColumnIndex,
 ValueEval arg0,
 ValueEval arg1)

Description copied from interface: Function2Arg

see Function.evaluate(ValueEval[], int, int)

Specified by:

evaluate in interface Function2Arg

evaluateArray

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

Specified by:

evaluateArray in interface ArrayFunction

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.