Hi,
That is exactly the path I took with Compass and Hibernate. Compass
integrates with Hibernate events (update/delete/create) and syncs the
search engine using it. I had problems with Hibernate 2 interceptors
(external id is null, and other stuff) so it currently works only with
Hibernate events. The nice thing about Compass, is that once the
application works on the Object level for the search as well (OSEM),
than it becomes very simple to do it. Compass simply registers with
Hibernate events, and persist to the search engine any changes made to
objects that have both ORM (obviously) and OSEM definitions.
One can than extend the notion of intercepting and actually define a
generic Aspect (AOP) for search engine syncs. Which can be applied to
any application, as long as it has OSEM - Object to Search Engine
mappings (or any other type of mappings), since you must have some kind
of knowledge how to combine the two.
Shay
Otis Gospodnetic wrote:
Hi Chris,
--- Chris Lu <[EMAIL PROTECTED]> wrote:
Hi, Just an idea to make Lucene work with databases more easily.
When I communicated with Shay Banon(Compass' author), it came to me
that maybe Lucene can be wrapped around JDBC drivers. Let's say it's
L-JDBC.
So whenever an object is stored through JDBC, according to some XML
configuration file, L-JDBC can index the updated object/document, or
delete it from the index.
Basically make Lucene indexing transparent to new/existing
applications.
Not really a super idea. I am wondering anyone will find it helpful?
Yes, that would be handy, as lots of people have applications that use
both Lucene and a RDBMS and use various tricks to keep the two in sync.
If an application uses Hibernate, then one can make use of various
Hibernate interceptors and use them to trigger operations on an
external Lucene index. I know at least one application that does
something similar (see my .signature).
Otis
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