Java tutorial
/* * Copyright (c) 2000-2004 Netspective Communications LLC. All rights reserved. * * Netspective Communications LLC ("Netspective") permits redistribution, modification and use of this file in source * and binary form ("The Software") under the Netspective Source License ("NSL" or "The License"). The following * conditions are provided as a summary of the NSL but the NSL remains the canonical license and must be accepted * before using The Software. Any use of The Software indicates agreement with the NSL. * * 1. Each copy or derived work of The Software must preserve the copyright notice and this notice unmodified. * * 2. Redistribution of The Software is allowed in object code form only (as Java .class files or a .jar file * containing the .class files) and only as part of an application that uses The Software as part of its primary * functionality. No distribution of the package is allowed as part of a software development kit, other library, * or development tool without written consent of Netspective. Any modified form of The Software is bound by these * same restrictions. * * 3. Redistributions of The Software in any form must include an unmodified copy of The License, normally in a plain * ASCII text file unless otherwise agreed to, in writing, by Netspective. * * 4. The names "Netspective", "Axiom", "Commons", "Junxion", and "Sparx" are trademarks of Netspective and may not be * used to endorse or appear in products derived from The Software without written consent of Netspective. * * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED REPRESENTATIONS AND * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, * ARE HEREBY DISCLAIMED. * * NETSPECTIVE AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE OR ANY THIRD PARTY AS A * RESULT OF USING OR DISTRIBUTING THE SOFTWARE. IN NO EVENT WILL NETSPECTIVE OR ITS LICENSORS BE LIABLE FOR ANY LOST * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THE SOFTWARE, EVEN * IF IT HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. */ package com.netspective.sparx.util; import java.util.HashSet; import java.util.Iterator; import java.util.Set; import javax.servlet.ServletContextEvent; import javax.servlet.ServletContextListener; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import com.netspective.axiom.ConnectionContext; import com.netspective.axiom.connection.AbstractConnectionContext; import com.netspective.sparx.connection.HttpSessionBindableConnectionContext; import com.netspective.sparx.report.tabular.HtmlTabularReportDataSourceScrollStatesManager; public class ApplicationEventsListener implements ServletContextListener { private static final Log log = LogFactory.getLog(ApplicationEventsListener.class); public void contextInitialized(ServletContextEvent event) { log.trace("Init context for " + event.getServletContext().getServletContextName()); } public void contextDestroyed(ServletContextEvent event) { log.trace("Destroying context " + event.getServletContext().getServletContextName()); Set connContextsWithOpenConnections = new HashSet( AbstractConnectionContext.getConnectionContextsWithOpenConnections()); for (Iterator i = connContextsWithOpenConnections.iterator(); i.hasNext();) { ConnectionContext cc = (ConnectionContext) i.next(); // if the cc is bound to a session, it will be cleaned up when session is closed if requested if (!cc.isBoundToSession()) { if (cc instanceof HttpSessionBindableConnectionContext) { HttpSessionBindableConnectionContext bindableCC = (HttpSessionBindableConnectionContext) cc; if (!bindableCC.isCloseOnSessionUnbind()) cc.rollbackAndCloseAndLogAsConnectionLeak(log, "** Connection leak detected: connection is marked as a sending bound CC but is not set to automatically close when unbound."); } } else cc.rollbackAndCloseAndLogAsConnectionLeak(log, null); } HtmlTabularReportDataSourceScrollStatesManager.closeAllScrollStates(log); } }