1 package com.google.inject.servlet;
2 
3 import java.io.Closeable;
4 
5 /** Object that can be used to apply a request scope to a block of code. */
6 public interface RequestScoper {
7   /**
8    * Opens up the request scope until the returned object is closed. Implementations should ensure
9    * (e.g. by blocking) that multiple threads cannot open the same request scope concurrently. It is
10    * allowable to open the same request scope on the same thread, as long as open/close calls are
11    * correctly nested.
12    */
open()13   CloseableScope open();
14 
15   /** Closeable subclass that does not throw any exceptions from close. */
16   public interface CloseableScope extends Closeable {
17     @Override
close()18     void close();
19   }
20 }
21