Importing upstream Jetty jetty-9.2.1.v20140609

[gigi.git] / lib / jetty / org / eclipse / jetty / servlet / ListenerHolder.java

diff --git a/lib/jetty/org/eclipse/jetty/servlet/ListenerHolder.java b/lib/jetty/org/eclipse/jetty/servlet/ListenerHolder.java
new file mode 100644 (file)
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+++ b/lib/jetty/org/eclipse/jetty/servlet/ListenerHolder.java
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+//
+//  ========================================================================
+//  Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
+//  ------------------------------------------------------------------------
+//  All rights reserved. This program and the accompanying materials
+//  are made available under the terms of the Eclipse Public License v1.0
+//  and Apache License v2.0 which accompanies this distribution.
+//
+//      The Eclipse Public License is available at
+//      http://www.eclipse.org/legal/epl-v10.html
+//
+//      The Apache License v2.0 is available at
+//      http://www.opensource.org/licenses/apache2.0.php
+//
+//  You may elect to redistribute this code under either of these licenses.
+//  ========================================================================
+//
+
+
+package org.eclipse.jetty.servlet;
+
+import java.util.EventListener;
+
+/**
+ * ListenerHolder
+ *
+ * Specialization of AbstractHolder for servlet listeners. This
+ * allows us to record where the listener originated - web.xml,
+ * annotation, api etc.
+ */
+public class ListenerHolder extends BaseHolder<EventListener>
+{
+    private EventListener _listener;
+    
+
+    public ListenerHolder(Source source)
+    {
+        super(source);
+    }
+   
+    
+    public void setListener(EventListener listener)
+    {
+        _listener = listener;
+        setClassName(listener.getClass().getName());
+        setHeldClass(listener.getClass());
+        _extInstance=true;
+    }
+
+    public EventListener getListener()
+    {
+        return _listener;
+    }
+
+
+    @Override
+    public void doStart() throws Exception
+    {
+        //Listeners always have an instance eagerly created, it cannot be deferred to the doStart method
+        if (_listener == null)
+            throw new IllegalStateException("No listener instance");
+        
+        super.doStart();
+    }
+}