ConvertEmptyOrBlankStringsToNull

java.lang.Object
- com.opencsv.bean.processor.ConvertEmptyOrBlankStringsToNull

All Implemented Interfaces:

StringProcessor
```
public class ConvertEmptyOrBlankStringsToNull
extends java.lang.Object
implements StringProcessor
```
StringProcessor that converts the empty or blank strings to a literal null string. This is useful when you prefer null in a particular variable.
A sample of this can be found in the unit test ProcessorTestBean and is annotated as follows.
```
     @PreAssignmentProcessor(processor = ConvertEmptyOrBlankStringsToNull.class)
     @CsvBindByName(column = "name")
     private String beanName;
  
```
Since:

5.4

Constructor Summary

Constructors
Constructor Description

ConvertEmptyOrBlankStringsToNull()
Default Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.lang.String`	`processString(java.lang.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(java.lang.String value)`	This method is unused in this implementation as we are converting to null.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ConvertEmptyOrBlankStringsToNull
```
public ConvertEmptyOrBlankStringsToNull()
```
    Default Constructor.
- Method Detail
  - processString
```
public java.lang.String processString(java.lang.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(java.lang.String value)
```
    This method is unused in this implementation as we are converting to null. Any calls to this method are ignored.
    
    Specified by:
    
    setParameterString in interface StringProcessor
    
    Parameters:
    
    value - Information used by the processor to process the string