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Main | Next day (Nov 27, 2003) »

Wednesday Nov 26, 2003

OPML export in Roller 0.9.9.

Comments[0] by Dave in Roller

As part of Roller 0.9.9's new boomkark management features, I have also added the ability to export the bookmark folder hierarchy as OPML. I implemented this by changing Roller's RSSServlet into a FlavorServlet that serves "flavors" defined by Velocity templates found in the classpath at under /flavors and by adding a new flavor called opml.vm.

For example, the following URL will retrieve all of my folders in OPML format:

The following URL will retrieve only the contents of the my "/Subscriptions/Blogs - blogroll" folder:

And finally, the following URL will return my RSS2 feed:

Note that the FlavorServlet defaults to RSS and is mapped to /rss as well as /flavor so all existing Roller RSS URLs will continue to work.

There is also a new macro #showOpmlLink that renders an OPML icon which links to the bookmark folder of your choice. For example, near the bottom of my Bookmarks page there are OPML links, one for my bookmarks and one for my subsriptions. These OPML links are displayed by the following template code: 

<p>You can download my entire bookmark collection in OPML format 
using the links below:</p>
#showOpmlLink("/Bookmarks")Bookmarks (shown above)<br />
#showOpmlLink("/Subscriptions")RSS Subscriptions (not shown)

New bookmark management features for Roller 0.9.9.

Comments[3] by Dave in Roller

Over the past month or so, I've been re-working Roller's bookmark management features. As part of this work I added a new Query API so that we no longer have to hard-code Castor or Hibernate query language statements into the Roller Business Layer, I modified BookmarkManager to handle folder hierarchies of arbitrary depth, and I modified the bookmark POJOs to use Castor and Hibernate's lazy-loading facilities. I also rewrote the bookmark management JSP pages and used the JSTL <fmt:message> tag to externalize all strings on the page (for I18N).

Below is the new bookmark manager interface. It works fine now, but it still needs a little fit and finish.

The new bookmark management features will be included in Roller 0.9.9. If you want a preview, check out the new Bookmark Management docs I'm working on.

Now that I've got the hierarchy thing down, I'm turning my attention to the WeblogManager where I will add support for multiple categories per weblog entry and for hierarchical categories.

Experimenting with Erik's XML encoding methods.

Comments[4] by Dave in Roller

For RSS and OPML generation... OK, seems to be working now. Erik Thauvin donated his XML/HTML encoding methods to Roller. I just added them to Roller 0.9.9-dev which is running this site now I'll apply them to the Roller 0.9.8 branch for JRoller. Thanks Erik! Update: This is the class Erik donated: TextToHTML.java.

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