I'm trying to understand the DisMax query handler. I orginally
configured it to ensure that the query was mapped onto different fields
in the documents and a boost assigned if the fields match. And that
works pretty smoothly.
However when it comes to facetted searches the results perplexes me.
Consider the following example;
Document A:
<field name="Staff">John Doe</field>
Document B:
<field name="ProjectManager">John Doe</field>
The following queries does not return anything;
Staff:Doe
Staff:Doe*
Staff:John
Staff:John*
The query;
Staff:"John"
Returns Document A and B, even though document B doesnt even contain the
field 'Staff' (which is optional)! Through the "qf" field dismax has
been configured to search over the field 'ProjectManager' but I expected
the usage of a facet value would exclude the field... Looking at the
score of the documents, document A does score much higher than Document
B (a factor 20) but I would expect not to see B at all. I have changed
the dismax configuration minimum match to be 1, to ensure that all hits
with a single match is returned without effect. I have changed the tie
to 0 with no effect.
What am I missing here? I would like queries such as 'Staff:Doe' to
return document A, and only A.
Cheers,
Gert.
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