com.opencsv.bean.processor

Class ConvertEmptyOrBlankStringsToDefault

java.lang.Object

com.opencsv.bean.processor.ConvertEmptyOrBlankStringsToDefault

All Implemented Interfaces:

StringProcessor

public class ConvertEmptyOrBlankStringsToDefault
extends Object
implements StringProcessor

StringProcessor that converts the empty or blank strings to a desired value string. This is useful when you want a default value.

A sample of this can be found in the unit test ProcessorTestBean and is annotated as follows.

     @PreAssignmentProcessor(processor = ConvertEmptyOrBlankStringsToDefault.class, paramString = "-1")
     @CsvBindByName(column = "id")
     private int beanId;
 

Since:

5.4

Author:

Scott Conway

Constructor Summary

Constructors

Constructor and Description
ConvertEmptyOrBlankStringsToDefault() Default constructor

Method Summary

Modifier and Type	Method and Description
String	processString(String value) Method that contains the code that will transform a string into the value that will be validated and converted into the bean field.
void	setParameterString(String value) This allows the validator extending StringProcessor to be used by multiple fields by allowing you to pass in data for the processor to be used.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConvertEmptyOrBlankStringsToDefault

public ConvertEmptyOrBlankStringsToDefault()

Default constructor

Method Detail

processString

public String processString(String value)

Description copied from interface: StringProcessor

Method that contains the code that will transform a string into the value that will be validated and converted into the bean field.

Specified by:

processString in interface StringProcessor

Parameters:

value - String to be processed

Returns:

The processed String

setParameterString

public void setParameterString(String value)

Description copied from interface: StringProcessor

This allows the validator extending StringProcessor to be used by multiple fields by allowing you to pass in data for the processor to be used.

The data could be a default value or whatever the custom processor requires to convert the data.

If the processor needs multiple parameters, then you will need to combine them into a single string using some sort of delimiter, say a comma, and parse them out using some library that allows you to parse such strings 😁.

If the processor does not need a value then just create an empty method like the ConvertEmptyOrBlankStringsToNull processor used by the BeanFieldProcessorTest.

Specified by:

setParameterString in interface StringProcessor

Parameters:

value - Information used by the processor to process the string