When there are times where I query my solr core and get 0 results returned, is there a way that I can substitute that for a fallback (default) record to return?
So- for example, instead of getting this (below):
<response><lst name="responseHeader"><int name="status">0</int><int name="QTime">2</int><lst name="params"><str name="indent">on</str><str name="start">0</str><str name="q">asdf</str><str name="version">2.2</str><str name="rows">10</str></lst></lst><result name="response" numFound="0" start="0"/></response>
I get some kind of return, like the first id in my data set (where field ‘id’ equals ‘1’)?
Nothing out of the box. If you are happy to implement your own Java code, have a look at SearchComponents how they do it. For example, Query Elevation component does something similar.
In fact, if you don’t mind a particular document always being returned and – if not needed – ignored by the client, you can use QueryElevationComponent for that.