For this specific question, you can create index on files, search files that of type image, and from matched files, find the unique directories(can be done in lucene or you can do it via java).
Of course this does not scale to deeper relationships. Usually you do need to flattern the database objects in order to use lucene. It's just trading space for speed. I would prefer a detached approach instead of Hibernate or EJB's approach, which is kind of too tightly coupled with any system. How to rebuild if the index is corrupted, or you have a new Analyzer, or schema evolves? How to make it multi-thread safe? -- Chris Lu ------------------------- Instant Full-Text Search On Any Database/Application site: http://www.dbsight.net demo: http://search.dbsight.com On 11/2/06, Mark Miller <[EMAIL PROTECTED]> wrote:
Lucene is probably not the solution if you are looking for a relational model. You should be using a database for that. If you want to combine Lucene with a relational model, check out Hibernate and the new EJB annotations that it supports...there is a cool little Lucene add-on that lets you declare fields to be indexed (and how) with annotations. - Mark Rajesh parab wrote: > Hi, > > As I understand, Lucene has a flat structure where you can define multiple fields inside the document. There is no relationship between any field. > > I would like to enable index based search for some of the components inside relational database. For exmaple, let say "Folder" Object. The Folder object can have relationship with File object. The File object, in turn, can have attributes like is image, is text file, etc. So, the stricture is > > Folder -- > File > | > ------- > is image, is text file, ...... > > > I would like to enable a search to find a Folder with File of type image. How can we model such relational data inside Lucene index? > > Regards, > Rajesh > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
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