I really don’t understand the question. The field has to be multiValued, but there’s no other restriction. It’s all about whether a document you input has the same field name specified more than once, i.e. is multiValued. That’s why the example I gave has <field name=“blah”…. twice.
Imagine you’re indexing a document. The client side breaks up the doc on sentence boundaries and enters them as multiple mentions of the same field, i.e. <doc> <field name=“content”>sentence one</field> <field name=“content”>sentence two</field> <field name=“content”>sentence three</field> <field name=“content”>sentence four</field> <field name=“content”>sentence five</field> </doc> I think you’re missing the implication that the incoming document _already_ has the multiple fields put there by the time it gets to Solr. Best, Erick > On Oct 18, 2019, at 2:28 AM, Shubham Goswami <shubham.gosw...@hotwax.co> > wrote: > > Hi Erick > > Thanks for reply and your example is very helpful. > But i think we can only use this attribute if we are getting data from a > single field > which has the copy of all data from every field. > Please correct me if i am wrong. > Thanks for your great support. > > Shubham > > On Thu, Oct 17, 2019 at 5:56 PM Erick Erickson <erickerick...@gmail.com> > wrote: > >> First, it only counts if you add multiple entries for the field. Consider >> the following >> <doc> >> <field name=“blah”>a b c</field> >> <field name=“blah”>def</field> >> </doc> >> >> where the field has a positionIncrementGap of 100. The term positions of >> the entries are >> a:1 >> b:2 >> c:3 >> d:103 >> e:104 >> f:105 >> >> Now consider the doc where there’s only one field: >> <doc> >> <field name=“blah”>a b c d e f</field> >> </doc> >> >> The term positions are >> a:1 >> b:2 >> c:3 >> d:4 >> e:5 >> f:6 >> >> The use-case is if you, say, index individual sentences and want to match >> two or more words in the _same_ sentence. You can specify a phrase query >> where the slop is < the positionIncrementGap. So in the first case, if I >> search for “a b”~99 I’d get a match. But if I searched for “a d”~99 I >> wouldn’t. >> >> Best, >> Erick >> >>> On Oct 17, 2019, at 2:09 AM, Shubham Goswami <shubham.gosw...@hotwax.co> >> wrote: >>> >>> Hi Community >>> >>> I am a beginner in solr and i am trying to understand the working of >>> positionIncrementGap but i am still not clear how it exactly works for >> the >>> phrase queries and general queires. >>> Can somebody please help me to understand this with the help fo an >>> example ? >>> Any help will be appreciated. Thanks in advance. >>> >>> -- >>> *Thanks & Regards* >>> Shubham Goswami >>> Enterprise Software Engineer >>> *HotWax Systems* >>> *Enterprise open source experts* >>> cell: +91-7803886288 >>> office: 0731-409-3684 >>> http://www.hotwaxsystems.com >> >> > > -- > *Thanks & Regards* > Shubham Goswami > Enterprise Software Engineer > *HotWax Systems* > *Enterprise open source experts* > cell: +91-7803886288 > office: 0731-409-3684 > http://www.hotwaxsystems.com
