X-Git-Url: https://code.wpia.club/?p=gigi.git;a=blobdiff_plain;f=lib%2Fjetty%2Forg%2Feclipse%2Fjetty%2Fserver%2Fhandler%2FHandlerWrapper.java;fp=lib%2Fjetty%2Forg%2Feclipse%2Fjetty%2Fserver%2Fhandler%2FHandlerWrapper.java;h=dcbf6ff5d544c936f7fe4c4c67df8e7bd280e8ab;hp=0000000000000000000000000000000000000000;hb=73ef54a38e3930a1a789cdc6b5fa23cdd4c9d086;hpb=515007c7c1351045420669d65b59c08fa46850f2 diff --git a/lib/jetty/org/eclipse/jetty/server/handler/HandlerWrapper.java b/lib/jetty/org/eclipse/jetty/server/handler/HandlerWrapper.java new file mode 100644 index 00000000..dcbf6ff5 --- /dev/null +++ b/lib/jetty/org/eclipse/jetty/server/handler/HandlerWrapper.java @@ -0,0 +1,142 @@ +// +// ======================================================================== +// 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.server.handler; + +import java.io.IOException; +import java.util.List; + +import javax.servlet.ServletException; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +import org.eclipse.jetty.server.Handler; +import org.eclipse.jetty.server.Request; +import org.eclipse.jetty.server.Server; +import org.eclipse.jetty.util.annotation.ManagedAttribute; +import org.eclipse.jetty.util.annotation.ManagedObject; +import org.eclipse.jetty.util.component.LifeCycle; + +/* ------------------------------------------------------------ */ +/** A HandlerWrapper acts as a {@link Handler} but delegates the {@link Handler#handle handle} method and + * {@link LifeCycle life cycle} events to a delegate. This is primarily used to implement the Decorator pattern. + * + */ +@ManagedObject("Handler wrapping another Handler") +public class HandlerWrapper extends AbstractHandlerContainer +{ + protected Handler _handler; + + /* ------------------------------------------------------------ */ + /** + * + */ + public HandlerWrapper() + { + } + + /* ------------------------------------------------------------ */ + /** + * @return Returns the handlers. + */ + @ManagedAttribute(value="Wrapped Handler", readonly=true) + public Handler getHandler() + { + return _handler; + } + + /* ------------------------------------------------------------ */ + /** + * @return Returns the handlers. + */ + @Override + public Handler[] getHandlers() + { + if (_handler==null) + return new Handler[0]; + return new Handler[] {_handler}; + } + + /* ------------------------------------------------------------ */ + /** + * @param handler Set the {@link Handler} which should be wrapped. + */ + public void setHandler(Handler handler) + { + if (isStarted()) + throw new IllegalStateException(STARTED); + + if (handler!=null) + handler.setServer(getServer()); + + Handler old=_handler; + _handler=handler; + updateBean(old,_handler); + } + + /* ------------------------------------------------------------ */ + @Override + public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException + { + if (_handler!=null && isStarted()) + { + _handler.handle(target,baseRequest, request, response); + } + } + + + /* ------------------------------------------------------------ */ + @Override + public void setServer(Server server) + { + if (server==getServer()) + return; + + if (isStarted()) + throw new IllegalStateException(STARTED); + + super.setServer(server); + Handler h=getHandler(); + if (h!=null) + h.setServer(server); + } + + + /* ------------------------------------------------------------ */ + @Override + protected void expandChildren(List list, Class byClass) + { + expandHandler(_handler,list,byClass); + } + + /* ------------------------------------------------------------ */ + @Override + public void destroy() + { + if (!isStopped()) + throw new IllegalStateException("!STOPPED"); + Handler child=getHandler(); + if (child!=null) + { + setHandler(null); + child.destroy(); + } + super.destroy(); + } + +}