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 >
