Too much to learn. But hey, at least it's exactly the stuff I enjoy learning. I think I'll have to construct testing environments for each technology I'm evaluating to see how difficult it is to learn how to use the thing and tune it for my needs.
Let's see: XQuery, XML:DB, OO PHP, Cocoon, Tomcat, Servlets, dbXML, eXist, Berkeley DB XML, Xerces, custom relational mapping to Oracle 9i and mysql, phoenix and postgresql...
I'll sit myself down and draft the requirements (data size, number of simultaneous queries, type of queries), then install and configure the servers and run some benchmarks. That can take a month, without the custom relational mapping. Then we'll see what's quicker. I'm pretty sure what's easier by now. ;)
