Subject: RE: [docbook-apps] search engine with docbook
No packages have been released yet, but you can donwload it from svn and compile it yourself. It is then easy to automate the indexing process for example using ant. The only thing you have to do is to generate a xml file with list of all resulting html files to index which is then passed to the java library. This can be done in your customization layer during docbook source files processing.
If you are interested I can prepare a package (basicaly xslt template for generating files to index) to share with the DocBook community and some thorough usage info.