org.scopemvc.util.convertor
Class NullStringConvertor

java.lang.Object
  |
  +--org.scopemvc.util.convertor.NullStringConvertor

All Implemented Interfaces:

StringConvertor

Direct Known Subclasses:

BigDecimalStringConvertor, BooleanStringConvertor, DateStringConvertor, NumberStringConvertor, StringStringConvertor

public abstract class NullStringConvertor

extends java.lang.Object

implements StringConvertor

Abstract base class for StringConvertors that recognise a presetn String value to represent null.

Version:

$Revision: 1.3 $ $Date: 2002/09/05 15:41:47 $

Author:

Steve Meyfroidt

, Daniel Michalik

Constructor Summary

NullStringConvertor()

Method Summary

java.lang.String	getNullAsString()
protected boolean	isNull(java.lang.String inString) Does the passed String represent null.
void	setNullAsString(java.lang.String inNullString) Sets String representation used when parameter in valueAsString is null.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.scopemvc.util.convertor.StringConvertor

stringAsValue, valueAsString

Constructor Detail

NullStringConvertor

public NullStringConvertor()

Method Detail

getNullAsString

public java.lang.String getNullAsString()

Returns:

a String representation used when parameter in valueAsString is null. Default value is empty string.

setNullAsString

public void setNullAsString(java.lang.String inNullString)
                     throws java.lang.IllegalArgumentException

Sets String representation used when parameter in valueAsString is null. Method stringAsValue also uses this value: if parameter is equal to this representation, return value should be null. Default value is empty string.

Parameters:

inNullString - The new nullAsString value

Throws:

java.lang.IllegalArgumentException - if passed value is null.

isNull

protected boolean isNull(java.lang.String inString)

Does the passed String represent null.

Parameters:

inString - TODO: Describe the Parameter

Returns:

The null value