Hi Shai, Thanks for implementing this feature. I was wondering if we could have another these 2 types for updatable docvalues 1) Double and 2) String this could cover lot;s of use case where you have much higher update rate than normal document update.
On Fri, Mar 14, 2014 at 4:20 AM, Shai Erera <ser...@gmail.com> wrote: > Hi > > 1. Is it possible to provide updateNumericDocValue(Term term, > > Map<String,Long>), incase I wish to update multiple-fields and it's > > doc-values? > > > > For now you can call updateNDV multiple times, each time w/ a new field. > Under the covers, we currently process each update separately anyway. > I think in order to change it we'd need to change the API such that it > allows you to define an update in many ways (e.g. Query, see below). Then, > an update by a single Term to multiple fields is "atomic". I don't want > though to add many updateNDV variants to IW, especially as we'd like to add > more DV update capabilities. Want to open an issue to explore that? > > 2. Instead of a "Term" based update, is it possible to extend it to using a > > "Query"? What are the obvious problems in doing so? > > > > Technically yes, but currently it's not exposed. At the lowest level we > pull a DocsEnum and iterate on docs to apply the update. So Term/Query > would work the same. I think we can explore generalizing the API such that > you can define your own update following some well thought of API, and that > way you have the flexibility in one hand, yet we don't need to maintain all > options in the Lucene source code. We can explore that on an issue. > > 3. TrackingIndexWriter does not have updateNumericDocValue exposed. Any > > reason of not doing so? > > > > No reason in particular :). Can you open an issue (separate from the API)? > > 4. Is it possible to update a DocValue other than long, like lets say a > > BinaryDV? > > > > This is something I currently do on LUCENE-5513, so hopefully very soon you > will be able to do that. If I'm fast enough, maybe even in 4.8 :). > > Shai > > > On Fri, Mar 14, 2014 at 12:14 PM, Ravikumar Govindarajan < > ravikumar.govindara...@gmail.com> wrote: > > > Hi, > > > > I have few questions related to updatable DocValues API... It would be > > great if I can get help. > > > > 1. Is it possible to provide updateNumericDocValue(Term term, > > Map<String,Long>), incase I wish to update multiple-fields and it's > > doc-values? > > > > 2. Instead of a "Term" based update, is it possible to extend it to > using a > > "Query"? What are the obvious problems in doing so? > > > > 3. TrackingIndexWriter does not have updateNumericDocValue exposed. Any > > reason of not doing so? > > > > 4. Is it possible to update a DocValue other than long, like lets say a > > BinaryDV? > > > > -- > > Ravi > > >
