Re: need info for database based Lucene but not flat file
There is a Berkeley DB implementation of Lucene's Directory in the jakarta-lucene-sandbox repository. Erik On Apr 26, 2004, at 8:35 PM, Yukun Song wrote: As known, currently Lucene uses flat file to store information for indexing. Any people has idea or resources for combining database (Like MySQL or PostreSQL) and Lucene instead of current flat index file formats? Regards, Yukun Song - 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]
RE: need info for database based Lucene but not flat file
As lucene implements its own concept of document it is not dedicated to index a particular type of data source. It's up to you to write a tool that is able to browse your database and then submit the data as Lucene documents to the Lucene indexer. For example if your database contains a customer entity and you want to index all informations about these customers, you can create a module that will perform a select on the customer table an for each row returned create un Lucene Document and then add it to the indexWriter. It is recommended that your Lucene Document contains a keyword Field that represent the unique id of a customer in the database. As a first step you should be familiar with the concept of Document and Field. See Lucene short intro documentation. -Message d'origine- De : Yukun Song [mailto:[EMAIL PROTECTED] Envoyé : mardi 27 avril 2004 02:35 À : [EMAIL PROTECTED] Objet : need info for database based Lucene but not flat file As known, currently Lucene uses flat file to store information for indexing. Any people has idea or resources for combining database (Like MySQL or PostreSQL) and Lucene instead of current flat index file formats? Regards, Yukun Song - 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]
Re: need info for database based Lucene but not flat file
Yukun Song wrote: As known, currently Lucene uses flat file to store information for indexing. Any people has idea or resources for combining database (Like MySQL or PostreSQL) and Lucene instead of current flat index file formats? A few folks have implemented an SQL-based Lucene Directory, but none has yet been contributed to Lucene. Hopefully one will be soon. For some discussion of this, see messages on SQLDirectory in the mail archives: http://nagoya.apache.org/eyebrowse/SearchList?listId=listName=lucene-user%40jakarta.apache.orgsearchText=SQLDirectorydefaultField=subjectSearch=Search Doug - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: need info for database based Lucene but not flat file
On Tue, Apr 27, 2004 at 09:15:05AM -0700, Doug Cutting wrote: Yukun Song wrote: As known, currently Lucene uses flat file to store information for indexing. Any people has idea or resources for combining database (Like MySQL or PostreSQL) and Lucene instead of current flat index file formats? A few folks have implemented an SQL-based Lucene Directory, but none has yet been contributed to Lucene. Hopefully one will be soon. For some discussion of this, see messages on SQLDirectory in the mail archives: http://nagoya.apache.org/eyebrowse/SearchList?listId=listName=lucene-user%40jakarta.apache.orgsearchText=SQLDirectorydefaultField=subjectSearch=Search Doug Could anybody summarize what would be the technical pros/cons of a DB-based directory over the flat files? (What I see at the moment is that for some - significant? - perfomence penalty you'll get an index available over the network for multiple lucene engines -- if I'm right.) incze - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: need info for database based Lucene but not flat file
Incze Lajos wrote: Could anybody summarize what would be the technical pros/cons of a DB-based directory over the flat files? (What I see at the moment is that for some - significant? - perfomence penalty you'll get an index available over the network for multiple lucene engines -- if I'm right.) http://nagoya.apache.org/eyebrowse/[EMAIL PROTECTED]msgId=1344168 Doug - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: need info for database based Lucene but not flat file
On Tue, Apr 27, 2004 at 02:46:22PM -0700, Doug Cutting wrote: Incze Lajos wrote: Could anybody summarize what would be the technical pros/cons of a DB-based directory over the flat files? (What I see at the moment is that for some - significant? - perfomence penalty you'll get an index available over the network for multiple lucene engines -- if I'm right.) http://nagoya.apache.org/eyebrowse/[EMAIL PROTECTED]msgId=1344168 Doug Thanks. incze - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
