Re: [Dotlucene-developer] dotlucene and sql db

[<ma...@ga...>]

Okay, thanks.

The solution with two indexes sounds good. Updates will be made to "shadow
index" and every now and then you switch indexes.

I would use this for a web app, so I'd use an app-wide index. If I use
in-memory indexes, for open IndexSearchers would I still have to wait for
them to be closed, or can I just assign the "shadow-index" being the new
app-wide index?
Maybe I am thinking to complicated here ;-)




> I think you can't...
> ... but there is remote possibility I might be wrong, since I haven't
> fully explored the entire source code yet. ;)
>
> anyway,
> What you might need to do is find-delete (preferably by PK Keyword
> identifier) the document that has changed and then Add new document
> with new data. I used the procedure described in:
> http://nagoya.apache.org/eyebrowse/ReadMsg?listName=luc...@ja...&msgNo=6300
>
> In addition, you also might wish to use RAMDirecotry for updates and
> then "flush-combine" it on disk (or any other appropriate permanent
> storage) index using:
>   AddIndexes(new Directory[] {oldIndexStorage, updateIndexStorage})
> method of new IndexWritter.
>
> Regards,
> Ivan
>
> On Sun, 20 Feb 2005 14:18:51 +0100 (CET), ma...@ga... <ma...@ga...>
> wrote:
>> Alright thanks,
>>
>> I see how this works for new documents but what if a document (in my
>> case
>> database field) has changed.
>>
>> Can I tell dotlucene that a specific document (marked by some
>> identifier,
>> probably the PK of the db-field) has changed?
>>
>> Grtz, Max
>>
>>
>> > You can.
>> >
>> > When Lucene index is built, you may delete and add documents to it as
>> > you deem necessary. You may also Index.Optimize() every now or
>> > then,... just to cleanup files a bit and compact everything in a
>> > single index file.
>> >
>> > Regards,
>> > Ivan
>> >
>> > On Fri, 18 Feb 2005 22:04:01 +0100 (CET), ma...@ga...
>> <ma...@ga...>
>> > wrote:
>> >> Hi,
>> >>
>> >> I just downloaded the sample app and would like to use the dll to
>> >> enhance
>> >> my "No-Fulltext-Database" with dotlucene...
>> >>
>> >> Does anybody have some example code on how to accomplish this?
>> >>
>> >> For example, I want to store html-texts in the db, so I would have to
>> >> index the extracted plain text of these texts with dotlucene and
>> store
>> >> the
>> >> PrimaryKey of the database-field somewhere with the index
>> information.
>> >>
>> >> On subsequent updates of the database I would have to update the
>> index
>> >> as
>> >> well.
>> >> Can I update the index for individual documents?
>> >>
>> >> Any help would be appreciated...
>> >>
>> >> Thanks, Max
>> >>
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>> >
>> > --
>> > [House-of-IX] -- Ivan Vedic Ai
>> > ___________________________________
>> > Chief Engineer - Information Technology
>> >  dept: NegEntropic Continuum Dynamics
>> > spec: Systems Engineering
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