Filter (Piranha - Project 20.6.0 API)

All Known Implementing Classes:

AuthenticationFilter, AuthorizationFilter, AuthorizationPreFilter, GenericFilter, HttpFilter
```
public interface Filter
```
The Filter API.

Author:

Manfred Riem ([email protected])

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default void`	`destroy()`	Destroy the filter.
`void`	`doFilter(ServletRequest request, ServletResponse response, FilterChain chain)`	Process the request.
`default void`	`init(FilterConfig filterConfig)`	Initialize the filter.

- Method Detail
  - destroy
```
default void destroy()
```
    Destroy the filter.
  - doFilter
```
void doFilter(ServletRequest request,
              ServletResponse response,
              FilterChain chain)
       throws IOException,
              ServletException
```
    Process the request.
    
    Parameters:
    
    request - the request.
    
    response - the response.
    
    chain - the chain.
    
    Throws:
    
    IOException - when an I/O error occurs.
    
    ServletException - when a servlet error occurs.
  - init
```
default void init(FilterConfig filterConfig)
           throws ServletException
```
    Initialize the filter.
    
    Parameters:
    
    filterConfig - the filter configuration.
    
    Throws:
    
    ServletException - when a servlet error occurs.