Filter.Chain (Java SE 13 & JDK 13 )
Description: declaration: module: jdk.httpserver, package: com.sun.net.httpserver, class: Filter, class: Chain
Keywords: com.sun.net.httpserver.Filter.Chain class

Module jdk.httpserver
Package com.sun.net.httpserver

# Class Filter.Chain

java.lang.Object
com.sun.net.httpserver.Filter.Chain

Enclosing class:
  Filter

    public static class Filter.Chain
    extends Object

a chain of filters associated with a HttpServer. Each filter in the chain is given one of these so it can invoke the next filter in the chain

- ## Constructor Summary

  Constructors
  Constructor | Description
  --- | ---
  `Chain​(List<Filter> filters, HttpHandler handler)` |

- ## Method Summary

  Modifier and Type | Method | Description
  --- | --- | ---
  `void` | `doFilter​(HttpExchange exchange)` | calls the next filter in the chain, or else the users exchange handler, if this is the final filter in the chain.

  ### Methods declared in class java.lang.Object

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

- ## Constructor Details

  - ### Chain

    public Chain​(List<Filter> filters, HttpHandler handler)

- ## Method Details

  - ### doFilter

    public void doFilter​(HttpExchange exchange) throws IOException
    calls the next filter in the chain, or else the users exchange handler, if this is the final filter in the chain. The Filter may decide to terminate the chain, by not calling this method. In this case, the filter must send the response to the request, because the application's exchange handler will not be invoked.
    Parameters:
      `exchange` - the HttpExchange
    Throws:
      `IOException` - let exceptions pass up the stack
      `NullPointerException` - if exchange is `null`