Hi András, Thanks, this is what I need!
I also notice this user commit data does not carry over if I am consolidating several search database into a new one, I guess the solution should be explicitly use getCommitData for each sub-index, then set it into new consolidated search database, right? Best, --Xiaolong On Tue, Nov 22, 2016 at 12:10 PM, András Péteri <apet...@b2international.com > wrote: > Hi Xiaolong, > > A Map of key-value pairs can be supplied to > IndexWriter#setCommitData(Map<String,String>) and will be persisted > when committing changes (setting the commit data counts as a change). > It can be retrieved with IndexWriter#getCommitData() later. > > This may serve as good storage for metadata; as an example, > Elasticsearch stores attributes related to its transaction log there > (UUID and generation identifier). > > Regards, > András > > On Tue, Nov 22, 2016 at 5:40 PM, Xiaolong Zheng <zhengxiaol...@gmail.com> > wrote: > > Thanks, StoredField seems still down to the per-document level, which > means > > for every document they will contains this search field. > > > > What I really would like is a global level storage to hold this single > > value. Maybe this is impossible. > > > > Sincerely, > > > > --Xiaolong > > > > > > On Tue, Nov 22, 2016 at 5:13 AM, Michael McCandless < > > luc...@mikemccandless.com> wrote: > > > >> Lucene won't merge foreign files for you, and in general it's > >> dangerous to put such files into Lucene's index directory because if > >> they look like codec files Lucene may delete them. > >> > >> Can you just add a StoredField to each document to hold your > information? > >> > >> Mike McCandless > >> > >> http://blog.mikemccandless.com > >> > >> > >> On Mon, Nov 21, 2016 at 11:38 PM, Xiaolong Zheng > >> <zhengxiaol...@gmail.com> wrote: > >> > Hello, > >> > > >> > I am trying to adding some meta data into the search data base. > Instead > >> of > >> > adding a new search filed or adding a phony document, I am looking at > the > >> > method org.apache.lucene.store.Directory#createOutpu, which is create > >> new > >> > file in the search directory. > >> > > >> > > >> > I am wondering does indexwriter can also merge this non-index file > while > >> it > >> > merging multiple search index? > >> > > >> > And if I am stepping back a little bit, what's is the best way to add > >> meta > >> > data into the search database. > >> > > >> > For example, I would like to add a indicator which is showing the > >> different > >> > kind of stemmer is being used while it created. > >> > > >> > > >> > > >> > > >> > > >> > Thanks, > >> > > >> > --Xiaolong > >> > > -- > András Péteri > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > >
