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Jetty example source code file (HandlerCollection.java)
The Jetty HandlerCollection.java source code//======================================================================== //$Id: HandlerCollection.java,v 1.5 2005/11/11 22:55:39 gregwilkins Exp $ //Copyright 2004-2005 Mort Bay Consulting Pty. Ltd. //------------------------------------------------------------------------ //Licensed under the Apache License, Version 2.0 (the "License"); //you may not use this file except in compliance with the License. //You may obtain a copy of the License at //http://www.apache.org/licenses/LICENSE-2.0 //Unless required by applicable law or agreed to in writing, software //distributed under the License is distributed on an "AS IS" BASIS, //WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. //See the License for the specific language governing permissions and //limitations under the License. //======================================================================== package org.mortbay.jetty.handler; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.mortbay.jetty.EofException; import org.mortbay.jetty.Handler; import org.mortbay.jetty.Server; import org.mortbay.util.LazyList; import org.mortbay.util.MultiException; /* ------------------------------------------------------------ */ /** A collection of handlers. * For each request, all handler are called, regardless of * the response status or exceptions. * * @author gregw * @org.apache.xbean.XBean */ public class HandlerCollection extends AbstractHandlerContainer { private Handler[] _handlers; /* ------------------------------------------------------------ */ public HandlerCollection() { super(); } /* ------------------------------------------------------------ */ /** * @return Returns the handlers. */ public Handler[] getHandlers() { return _handlers; } /* ------------------------------------------------------------ */ /** * * @param handlers The handlers to set. */ public void setHandlers(Handler[] handlers) { Handler [] old_handlers = _handlers==null?null:(Handler[])_handlers.clone(); if (getServer()!=null) getServer().getContainer().update(this, old_handlers, handlers, "handler"); Server server = getServer(); MultiException mex = new MultiException(); for (int i=0;handlers!=null && i<handlers.length;i++) { if (handlers[i].getServer()!=server) handlers[i].setServer(server); } // quasi atomic.... so don't go doing this under load on a SMP system. _handlers = handlers; for (int i=0;old_handlers!=null && i<old_handlers.length;i++) { if (old_handlers[i]!=null) { try { if (old_handlers[i].isStarted()) old_handlers[i].stop(); } catch (Throwable e) { mex.add(e); } } } mex.ifExceptionThrowRuntime(); } /* ------------------------------------------------------------ */ /* * @see org.mortbay.jetty.EventHandler#handle(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) */ public void handle(String target, HttpServletRequest request, HttpServletResponse response, int dispatch) throws IOException, ServletException { if (_handlers!=null && isStarted()) { MultiException mex=null; for (int i=0;i<_handlers.length;i++) { try { _handlers[i].handle(target,request, response, dispatch); } catch(IOException e) { throw e; } catch(RuntimeException e) { throw e; } catch(Exception e) { if (mex==null) mex=new MultiException(); mex.add(e); } } if (mex!=null) { if (mex.size()==1) throw new ServletException(mex.getThrowable(0)); else throw new ServletException(mex); } } } /* ------------------------------------------------------------ */ /* * @see org.mortbay.jetty.handler.AbstractHandler#doStart() */ protected void doStart() throws Exception { MultiException mex=new MultiException(); if (_handlers!=null) { for (int i=0;i<_handlers.length;i++) try{_handlers[i].start();}catch(Throwable e){mex.add(e);} } super.doStart(); mex.ifExceptionThrow(); } /* ------------------------------------------------------------ */ /* * @see org.mortbay.jetty.handler.AbstractHandler#doStop() */ protected void doStop() throws Exception { MultiException mex=new MultiException(); try { super.doStop(); } catch(Throwable e){mex.add(e);} if (_handlers!=null) { for (int i=_handlers.length;i-->0;) try{_handlers[i].stop();}catch(Throwable e){mex.add(e);} } mex.ifExceptionThrow(); } /* ------------------------------------------------------------ */ public void setServer(Server server) { Server old_server=getServer(); super.setServer(server); Handler[] h=getHandlers(); for (int i=0;h!=null && i<h.length;i++) h[i].setServer(server); if (server!=null && server!=old_server) server.getContainer().update(this, null,_handlers, "handler"); } /* ------------------------------------------------------------ */ /* Add a handler. * This implementation adds the passed handler to the end of the existing collection of handlers. * @see org.mortbay.jetty.HandlerContainer#addHandler(org.mortbay.jetty.Handler) */ public void addHandler(Handler handler) { setHandlers((Handler[])LazyList.addToArray(getHandlers(), handler, Handler.class)); } /* ------------------------------------------------------------ */ public void removeHandler(Handler handler) { Handler[] handlers = getHandlers(); if (handlers!=null && handlers.length>0 ) setHandlers((Handler[])LazyList.removeFromArray(handlers, handler)); } /* ------------------------------------------------------------ */ protected Object expandChildren(Object list, Class byClass) { Handler[] handlers = getHandlers(); for (int i=0;handlers!=null && i<handlers.length;i++) list=expandHandler(handlers[i], list, byClass); return list; } } Other Jetty examples (source code examples)Here is a short list of links related to this Jetty HandlerCollection.java source code file: |
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