Overview  Package   Class  Tree  Deprecated  Index  Help 
 PREV CLASS   NEXT CLASS FRAMES    NO FRAMES    
SUMMARY: NESTED | FIELD | CONSTR | METHOD DETAIL: FIELD | CONSTR | METHOD

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

java.lang.Object
  extended by org.apache.poi.ss.formula.functions.Fixed1ArgFunction
      extended by org.apache.poi.ss.formula.functions.LogicalFunction
All Implemented Interfaces:
Function, Function1Arg
public abstract class LogicalFunction
extends Fixed1ArgFunction

Implementation of the various ISxxx Logical Functions, which take a single expression argument, and return True or False.

Field Summary
static Function ISBLANK
           
static Function ISERR
          Implementation of Excel ISERR() function.
static Function ISERROR
           
static Function ISLOGICAL
           
static Function ISNA
          Implementation for Excel ISNA() function.
static Function ISNONTEXT
           
static Function ISNUMBER
           
static Function ISREF
           
static Function ISTEXT
           
 
Constructor Summary
LogicalFunction()
           
 
Method Summary
 ValueEval evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0)
          see Function.evaluate(ValueEval[], int, int)
protected abstract  boolean evaluate(ValueEval arg)
           
 
Methods inherited from class org.apache.poi.ss.formula.functions.Fixed1ArgFunction
evaluate
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

ISLOGICAL

public static final Function ISLOGICAL

ISNONTEXT

public static final Function ISNONTEXT

ISNUMBER

public static final Function ISNUMBER

ISTEXT

public static final Function ISTEXT

ISBLANK

public static final Function ISBLANK

ISERROR

public static final Function ISERROR

ISERR

public static final Function ISERR
Implementation of Excel ISERR() function.

Syntax:
ISERR(value)

value The value to be tested

Returns the logical value TRUE if value refers to any error value except '#N/A'; otherwise, it returns FALSE.

ISNA

public static final Function ISNA
Implementation for Excel ISNA() function.

Syntax:
ISNA(value)

value The value to be tested

Returns TRUE if the specified value is '#N/A', FALSE otherwise.

ISREF

public static final Function ISREF
Constructor Detail

LogicalFunction

public LogicalFunction()
Method Detail

evaluate

public ValueEval evaluate(int srcRowIndex,
                          int srcColumnIndex,
                          ValueEval arg0)
Description copied from interface: Function1Arg
see Function.evaluate(ValueEval[], int, int)

evaluate

protected abstract boolean evaluate(ValueEval arg)
Parameters:
arg - any ValueEval, potentially BlankEval or ErrorEval.
Overview  Package   Class  Tree  Deprecated  Index  Help 
 PREV CLASS   NEXT CLASS FRAMES    NO FRAMES    
SUMMARY: NESTED | FIELD | CONSTR | METHOD DETAIL: FIELD | CONSTR | METHOD