cdmlib-remote/src/main/java/eu/etaxonomy/cdm/remote/controller/interceptor/DatasourceContextHandlerInterceptor.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2007 EDIT
   4 * European Distributed Institute of Taxonomy
   5 * http://www.e-taxonomy.eu
   6 *
   7 * The contents of this file are subject to the Mozilla Public License Version 1.1
   8 * See LICENSE.TXT at the top of this package for the full license terms.
   9 */
  10
  11 package eu.etaxonomy.cdm.remote.controller.interceptor;
  12
  13 import java.util.regex.Matcher;
  14 import java.util.regex.Pattern;
  15
  16 import javax.servlet.http.HttpServletRequest;
  17 import javax.servlet.http.HttpServletResponse;
  18
  19 import org.apache.log4j.Logger;
  20 import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
  21
  22 import eu.etaxonomy.cdm.database.NamedContextHolder;
  23
  24 /**
  25  * @author a.kohlbecker
  26  * @deprecated<b>NOTICE:</b>
  27  * <em>This class is related to the switchable database infrastructure which allows to serve
  28  * multiple databases with only a single instance of the cdm-remote-webapp.
  29  * This concept however is deprecated due to several problems of which the most severe is the term loading issue.
  30  * This class should however not deleted since we once might wish to switch back to this concept when we are
  31  * able to deal with the implicated issues.</em>
  32  */
  33 @Deprecated
  34 public class DatasourceContextHandlerInterceptor extends HandlerInterceptorAdapter {
  35         private static final Logger logger = Logger.getLogger(DatasourceContextHandlerInterceptor.class);
  36
  37         private final static Pattern basepathPattern = Pattern.compile("^/([^/]+)/.*");
  38
  39         @Override
  40         public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
  41                 Matcher matcher = basepathPattern.matcher(request.getServletPath());
  42         if (matcher.matches())
  43         {
  44                 String basepath = matcher.group(1);
  45                 NamedContextHolder.setContextKey(basepath);
  46                 logger.info("datasource context set to: " + basepath);
  47         }
  48         return true;
  49         }
  50
  51
  52
  53         @Override
  54         public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
  55                 NamedContextHolder.clearContextKey();
  56                 logger.info("datasource context cleared");
  57
  58         }
  59 }