The way that collapse/expand is designed to be used is as follows: The main result set will contain the collapsed group heads.
The expanded section will contain the expanded groups for the page of results. To render the page you iterate the main result set. For each document check to see if there is an expanded group. Joel Bernstein http://joelsolr.blogspot.com/ On Tue, Mar 31, 2015 at 7:37 AM, Joel Bernstein <joels...@gmail.com> wrote: > You should be able to use collapse/expand with one result. > > Does the document in the main result set have group members that aren't > being expanded? > > > > Joel Bernstein > http://joelsolr.blogspot.com/ > > On Tue, Mar 31, 2015 at 2:00 AM, Derek Poh <d...@globalsources.com> wrote: > >> If I want to group the results (by a certain field) even if there is only >> 1 document, I should use the group parameter instead? >> The requirement is to group the result of product documents by their >> supplier id. >> "&group=true&group.field=P_SupplierId&group.limit=5" >> >> Is it true that the performance of collapse is better than group >> parameter on large data set, say 10-20 million documents? >> >> -Derek >> >> >> On 3/31/2015 10:03 AM, Joel Bernstein wrote: >> >>> The expanded section will only include groups that have expanded >>> documents. >>> >>> So, if the document that in the main result set has no documents to >>> expand, >>> then this is working as expected. >>> >>> >>> >>> Joel Bernstein >>> http://joelsolr.blogspot.com/ >>> >>> On Mon, Mar 30, 2015 at 8:43 PM, Derek Poh <d...@globalsources.com> >>> wrote: >>> >>> Hi >>>> >>>> I have a query which return 1 document. >>>> When I add the collapse and expand parameters to it, >>>> "&expand=true&expand.rows=5&fq={!collapse%20field=P_SupplierId}", the >>>> expanded section is empty (<lst name="expanded"/>). >>>> >>>> Is this the behaviour of collapse and expand parameters on result which >>>> contain only 1 document? >>>> >>>> -Derek >>>> >>>> >>>> >>>> >> >
