HI,
On Jan 16, 2008 4:25 PM, Alessandro Bologna
<[EMAIL PROTECTED]> wrote:
> I have installed the new webapp war file, and I have a question
> regarding its architecture. Is it using the new
> org.apache.jackrabbit.servlet classes or still relying on the previous
> architecture? Looking at the web.xml, it seems that is not. And if
> not, is there any sample implementation for the new classes?
The webapp is still based on the good old RepositoryStartupServlet,
but the webapp includes the jackrabbit-jcr-servlet jar and the
RepositoryStartupServlet extends AbstractRepositoryServlet, which
makes it easy to integrate with the other new servlet classes. See
also the new instruction pages (.../local.jsp and .../remote.jsp)
included in the webapp.
Thanks to RepositoryStartupServlet extending
AbstractRepositoryServlet, the started repository is automatically
available as the javax.jcr.Repository servlet context attribute. This
makes it easy to use the repository with other classes from
jackrabbit-jcr-servlet.
For example to bind the started repository in the local JNDI tree,
just add the following to the web.xml descriptor:
<servlet>
<servlet-name>JNDIBinding</servlet-name>
<servlet-class>org.apache.jackrabbit.servlet.JNDIBindingServlet</servlet-class>
<load-on-startup>10<load-on-startup>
</servlet>
See [1] for the available init parameters to better configure the JNDI
binding. (Note that you can also do the JNDI binding with previous
RepositoryStartupServlet configuration options, this example is just
to show you how the new servlets work.)
Alternatively, if you want to access the repository from another
webapp in the same servlet container and don't have (or don't want to
set up) a shared writable JNDI directory through which to make the
repository available, you can use cross-context access to look
directly into the servlet context of the Jackrabbit webapp. Use the
following in your webapp:
<servlet>
<servlet-name>Repository</servlet-name>
<servlet-class>org.apache.jackrabbit.servlet.CrossContextRepositoryServlet</servlet-class>
<init-param>
<param-name>path</param-name>
<param-value>/jackrabbit-webapp-1.4</param-value>
<description>Context path of the Jackrabbit webapp</description>
</init-param>
<load-on-startup>1<load-on-startup>
</servlet>
For this to work, you need to enable cross-context access for your
webapp. In Tomcat this happens by setting crossContext="true" in the
<Context/> configuration.
With that in place, you can access the repository in your webapp quite
easily like this:
import javax.jcr.Repository;
import org.apache.jackrabbit.servlet.ServletRepository;
public class MyServlet extends HttpServlet {
private final Repository repository = new ServletRepository(this);
// ...
}
[1]
http://jackrabbit.apache.org/api/1.4/org/apache/jackrabbit/servlet/JNDIBindingServlet.html
BR,
Jukka Zitting
