[MarkLogic Dev General] Apply query boosting based on attribute value

[Blessing N]

Hi,

I have a scenario where the query boosting has to be applied based on
an attribute value in the record. Consider the following records

<record>
<words>
<word>psychology</word>
<word>Health</word>
<word>Science</word>
</words>
<boostedwords>
<boostedword isBoosted="false">Science</boostedword>
</boostedwords>
</record>

<record>
<words>
<word>Dream</word>
<word>Health</word>
<word>Science</word>
</words>
<boostedwords>
<boostedword isBoosted="true">Science</boostedword>
</boostedwords>
</record>

The constraint and query is as follows

declare variable $CONSTRAINT-OPTIONS := <options
xmlns="http://marklogic.com/appservices/search";>
                                       <constraint name="boostedword">
                                    <value type="xs:string" facet="false">
                                    <element ns="" name="boostedword"/>
                                             <weight>50</weight>
                                  </value>
                                  </constraint>
                                       <constraint name="word">
                                    <value type="xs:string" facet="false">
                                   <element ns="" name="word"/>
                                         </value>
                                 </constraint>
</options>;


let $options := <options xmlns="http://marklogic.com/appservices/search";>
                   {$CONSTRAINT-OPTIONS/element(),
                     <transform-results apply="raw">
                     </transform-results>}
                </options>
 let $start:=0
 let $end:=10
 let $query := 'word:Science OR boostedword:Science'
 let $q := search:search($query,$options,$start,$end)
 return $q

When this query is executed the score of both the records are high due
to "boostedword" constraint which is expected.
My requirement is that the record score boosting has to apply only for
records having @isBoosted = true. For records with @isBoosted=false
the score should not be boosted.

Can this be achieved in constructing a query with conditions?

Thanks,
Blessing.
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