With the release of the Jetspeed 2.0 Open Source Enterprise Portal , I believe that Open Source Portals are in the way of changing their Portal Architecture not just by enhancing their Security components but also a combination of both LDAP and the Database as a Backend.
Now what kind of data Jetspeed 2.0 has put on LDAP and what all info is there in underlying database can only be gathered by rigorous evaluation of the product.
anyways….this release is fully-compliant with the Portlet Specification 1.0 (JSR-168). Jetspeed-2 has passed the TCK (Test Compatibility Kit) suite and is fully certified to the Java Portlet Standard.
Apache Portals Bridges project can be used to ‘bridge’ portals with existing technologies including Struts, JSF, PHP, Perl. For GUI designers, Jetspeed comes with several built-in templates used to decorate portals and portlets.