You are viewing a plain text version of this content. The canonical link for it is here.

Posted to java-user@lucene.apache.org by Bruce Cota <br...@vivi.com> on 2003/06/09 18:11:13 UTC

Deleting documents that meet a query

I need to delete all the documents from an index that
satisfy a BooleanQuery.

The only methods I can find (in IndexReader) for deleting
a document are delete(Term) and delete(int).

I tried searching on my Query using IndexSearcher.search(),
iterating over each document in the returned Hits,
and then iterating over Hits deleting each document like this:

for (int i=0; i<hits.length(); +++i) {
    ireader.delete(hits.id(i));
}

Hoping here that the value returned by
Hits.id(int) is the "docnum" expected in
IndexReader.delete(int)

But the call to delete throws an IOException.

So, is there any way I can delete all the documents from
an Index that satisfy a general Query?

Thank you for any advice.

Bruce Cota,
Unicon, Inc.



---------------------------------------------------------------------
To unsubscribe, e-mail: lucene-user-unsubscribe@jakarta.apache.org
For additional commands, e-mail: lucene-user-help@jakarta.apache.org

Re: Deleting documents that meet a query

Posted by Bruce Cota <br...@vivi.com>.

Thanks.  I will restore that code and try to figure out why
it broke :)  (Because my alternative solution was way uglier.)

Marie-Hélène Forget wrote:

>Hi,
>
>I confirm to you that delete( hits.id( i ) ) is ok.
>
>Hits.id( int ) returns the docnum that you need.
>
>MHF :)
>
>On Mon, 2003-06-09 at 12:11, Bruce Cota wrote:
>  
>
>>I need to delete all the documents from an index that
>>satisfy a BooleanQuery.
>>
>>The only methods I can find (in IndexReader) for deleting
>>a document are delete(Term) and delete(int).
>>
>>I tried searching on my Query using IndexSearcher.search(),
>>iterating over each document in the returned Hits,
>>and then iterating over Hits deleting each document like this:
>>
>>for (int i=0; i<hits.length(); +++i) {
>>    ireader.delete(hits.id(i));
>>}
>>
>>Hoping here that the value returned by
>>Hits.id(int) is the "docnum" expected in
>>IndexReader.delete(int)
>>
>>But the call to delete throws an IOException.
>>
>>So, is there any way I can delete all the documents from
>>an Index that satisfy a general Query?
>>
>>Thank you for any advice.
>>
>>Bruce Cota,
>>Unicon, Inc.
>>
>>
>>
>>---------------------------------------------------------------------
>>To unsubscribe, e-mail: lucene-user-unsubscribe@jakarta.apache.org
>>For additional commands, e-mail: lucene-user-help@jakarta.apache.org
>>
>>
>>    
>>
>
>
>---------------------------------------------------------------------
>To unsubscribe, e-mail: lucene-user-unsubscribe@jakarta.apache.org
>For additional commands, e-mail: lucene-user-help@jakarta.apache.org
>
>  
>

Re: Deleting documents that meet a query

Posted by Marie-Hélène Forget <mh...@logient.com>.

Hi,

I confirm to you that delete( hits.id( i ) ) is ok.

Hits.id( int ) returns the docnum that you need.

MHF :)

On Mon, 2003-06-09 at 12:11, Bruce Cota wrote:
> I need to delete all the documents from an index that
> satisfy a BooleanQuery.
> 
> The only methods I can find (in IndexReader) for deleting
> a document are delete(Term) and delete(int).
> 
> I tried searching on my Query using IndexSearcher.search(),
> iterating over each document in the returned Hits,
> and then iterating over Hits deleting each document like this:
> 
> for (int i=0; i<hits.length(); +++i) {
>     ireader.delete(hits.id(i));
> }
> 
> Hoping here that the value returned by
> Hits.id(int) is the "docnum" expected in
> IndexReader.delete(int)
> 
> But the call to delete throws an IOException.
> 
> So, is there any way I can delete all the documents from
> an Index that satisfy a general Query?
> 
> Thank you for any advice.
> 
> Bruce Cota,
> Unicon, Inc.
> 
> 
> 
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: lucene-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: lucene-user-help@jakarta.apache.org
> 
> 


---------------------------------------------------------------------
To unsubscribe, e-mail: lucene-user-unsubscribe@jakarta.apache.org
For additional commands, e-mail: lucene-user-help@jakarta.apache.org