I think you cal already kick tires and contribute a test case into https://issues.apache.org/jira/browse/SOLR-8208 that's already reachable there I believe, but I still working on core design.
On Thu, Mar 24, 2016 at 10:02 PM, Alisa Z. <prol...@mail.ru> wrote: > Hi all, > > I apologize for duplicating my previous message: > Solr 5.3: anything similar to ChildDocTransformerFactory that does not > flatten the hierarchical structure? > > However, it is still an open and interesting question: > > Following the example from https://dzone.com/articles/using-solr-49-new > , let's say we are given multiple-level nested structure: > > <doc> > <field name="id">1</field> > <field name="name">I am the parent</field> > <field name="cat">PARENT</field> > <doc> > <field name="id">1.1</field> > <field name="name">I am the 1st child</field> > <field name="cat">CHILD</field> > </doc> > <doc> > <field name="id">1.2</field> > <field name="name">I am the 2nd child</field> > <field name="cat">CHILD</field> > <doc> > <field name="id">1.2.1</field> > <field name="name">I am a grandchildren</field> > <field name="cat">GRANDCHILD</field> > </doc> > </doc> > </doc> > > > Querying > q={!parent which="cat:PARENT"}name:(I am +child)&fl=id,name,[child > parentFilter=cat:PARENT] > > will return flattened structure, where cat:CHILD and cat:GRANDCHILD > documents end up on the same level: > <doc> > <field name="id">1</field> > <field name="name">I am the parent</field> > <field name="cat">PARENT</field> > <doc> > <field name="id">1.1</field> > <field name="name">I am the 1st child</field> > <field name="cat">CHILD</field> > </doc> > <doc> > <field name="id">1.2</field> > <field name="name">I am the 2nd child</field> > <field name="cat">CHILD</field> > </doc> > <doc> > <field name="id">1.2.1</field> > <field name="name">I am a grandchildren</field> > <field name="cat">GRANDCHILD</field> > </doc> > </doc> Indeed, the JAVAdocs for ChildDocTransformerFactory say: "This > transformer returns all descendants of each parent document in a flat list > nested inside the parent document". > > Yet is there any way to preserve the hierarchy in the response? I really > need to find the way to preserve the structure in the response. > > Thank you in advance! > > -- > Alisa Zhila > ---------------------------------------------------------------------- > -- Sincerely yours Mikhail Khludnev Principal Engineer, Grid Dynamics <http://www.griddynamics.com> <mkhlud...@griddynamics.com>
