no.sesat.search.http.filters
Class SiteJspLoaderFilter

java.lang.Object
  no.sesat.search.http.filters.SiteJspLoaderFilter

All Implemented Interfaces:

Filter

public final class SiteJspLoaderFilter
extends Object
implements Filter

Downloads JSP files from skins into sesat to be compiled and used locally. This makes it look like jsps from the other skin web applications actually are bundled into sesat.

Implementation issue: Design and code with JSPs in skins

Inclusion of jsps may occurr with <jsp:include page="..."/> or some other requestDispatcher.include(..) approach. <%@ include file=".."/%> will not work.

To enable JSP files in a particular skin to be downloaded into sesat the following configuration is required:

• in the skin's web.xml add "jsp" to the resources.restricted init-param for ResourceServlet,
• in the skin's web.xml add "jsp=jsp" to the content.paths init-param for ResourceServlet,
• in the skin's web.xml add the servlet-mapping:

      <servlet-mapping>
          <servlet-name>resource servlet</servlet-name>
          <url-pattern>*.jsp</url-pattern>
      </servlet-mapping>
   

  so to avoid the skin's JspServlet and to serve the jsp files are resources back to sesat,

This have already been done in the base skin sesat-kernel/generic.sesam and can be used as an example.

Tomcat, or the container used, must not use unpackWARs="false", or any non-file based deployment implementation, as this class must be able to write files into the deployed webapps directory.
Such files are written using a FileChannel obtained like

new RandomFileAccess(new File(root + "requested-jsp-name"),"rw").getChannel()

Version:

$Id: SiteJspLoaderFilter.java 7225 2009-04-09 00:32:20Z ssmiweve $

Field Summary

static String	INC_SERVLET_PATH Servlet context and request attributes that the JSP engine uses.
static String	JSP_FILE Request attribute for <jsp-file> element of a servlet definition.

Constructor Summary

SiteJspLoaderFilter()

Method Summary

void	destroy()
void	doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
void	init(FilterConfig filterConfig)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

JSP_FILE

public static final String JSP_FILE

Request attribute for <jsp-file> element of a servlet definition. If present on a request, this overrides the value returned by request.getServletPath() to select the JSP page to be executed.

INC_SERVLET_PATH

public static final String INC_SERVLET_PATH

Servlet context and request attributes that the JSP engine uses.

See Also:

Constant Field Values

Constructor Detail

SiteJspLoaderFilter

public SiteJspLoaderFilter()

Method Detail

init

public void init(FilterConfig filterConfig)
          throws ServletException

Specified by:

init in interface Filter

Throws:

ServletException

doFilter

public void doFilter(ServletRequest request,
                     ServletResponse response,
                     FilterChain chain)
              throws IOException,
                     ServletException

Specified by:

doFilter in interface Filter

Throws:

IOException

ServletException

destroy

public void destroy()

Specified by:

destroy in interface Filter