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  *
  27  */
  28 public class DatasourceContextHandlerInterceptor extends HandlerInterceptorAdapter {
  29         private static final Logger logger = Logger.getLogger(DatasourceContextHandlerInterceptor.class);
  30
  31         private final static Pattern basepathPattern = Pattern.compile("^/([^/]+)/.*");
  32
  33         @Override
  34         public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
  35                 Matcher matcher = basepathPattern.matcher(request.getServletPath());
  36         if (matcher.matches())
  37         {
  38                 String basepath = matcher.group(1);
  39                 NamedContextHolder.setContextKey(basepath);
  40                 logger.info("datasource context set to: " + basepath);
  41         }
  42         return true;
  43         }
  44
  45
  46
  47         @Override
  48         public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
  49                 NamedContextHolder.clearContextKey();
  50                 logger.info("datasource context cleared");
  51
  52         }
  53 }