CharacterFilter (Flink : Metrics : Core 2.1.2-cp1 API)

All Known Implementing Classes:

AbstractReporter
```
@Public
public interface CharacterFilter
```
Interface for a character filter function. The filter function is given a string which the filter can transform. The returned string is the transformation result.

Field Summary

Fields
Modifier and Type Field Description

static CharacterFilter NO_OP_FILTER

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`String`	`filterCharacters(String input)`	Filter the given string and generate a resulting string from it.

- Field Detail
  - NO_OP_FILTER
```
static final CharacterFilter NO_OP_FILTER
```
- Method Detail
  - filterCharacters
```
String filterCharacters(String input)
```
    Filter the given string and generate a resulting string from it.
    For example, one implementation could filter out invalid characters from the input string.
    
    Parameters:
    
    input - Input string
    
    Returns:
    
    Filtered result string