103 lines
3.3 KiB
Java
Executable File
103 lines
3.3 KiB
Java
Executable File
/*
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* Copyright (C) 2002-2004 Red Hat Inc. All Rights Reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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package com.arsdigita.web;
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import com.arsdigita.kernel.Kernel;
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import java.util.ArrayList;
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import java.util.Iterator;
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import javax.servlet.http.HttpServletRequest;
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import org.apache.log4j.Logger;
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/**
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* Debugger contains static methods for registering debuggers.
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* Typically, debuggers are written to display the contents of
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* internal CCM data structures e.g., the XML representation of a page
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* prior to transformation. Subclass this class to add a particular
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* type of debugger.
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*
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* @see TransformationDebugger
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*
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* @author Justin Ross
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* @version $Id: Debugger.java 287 2005-02-22 00:29:02Z sskracic $
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*/
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public abstract class Debugger {
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private static final Logger s_log = Logger.getLogger(Debugger.class);
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public static final String DEBUG_PARAMETER = "debug";
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public static final ThreadLocal s_debuggers = new DebuggerListLocal();
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public static class DebugParameterListener implements ParameterListener {
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public void run(HttpServletRequest sreq, ParameterMap map) {
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if (Kernel.getConfig().isDebugEnabled()) {
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final String value = sreq.getParameter(DEBUG_PARAMETER);
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if (value != null) {
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map.setParameter(DEBUG_PARAMETER, value);
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}
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}
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}
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}
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public static final void addDebugger(Debugger debugger) {
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ArrayList list = (ArrayList) s_debuggers.get();
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list.add(debugger);
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}
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public static final String getDebugging(HttpServletRequest sreq) {
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ArrayList list = (ArrayList) s_debuggers.get();
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Iterator iter = list.iterator();
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StringBuffer buffer = new StringBuffer();
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while (iter.hasNext()) {
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Debugger debug = (Debugger) iter.next();
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if (debug.isRequested(sreq)) {
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buffer.append(debug.debug());
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}
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}
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return buffer.toString();
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}
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public abstract boolean isRequested(HttpServletRequest sreq);
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public abstract String debug();
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private static class DebuggerListLocal extends InternalRequestLocal {
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@Override
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protected Object initialValue() {
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if (Kernel.getConfig().isDebugEnabled()) {
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return new ArrayList();
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} else {
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return null;
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}
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}
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@Override
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protected void clearValue() {
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if (Kernel.getConfig().isDebugEnabled()) {
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ArrayList list = (ArrayList) get();
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list.clear();
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}
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}
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}
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}
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