XMLparser drops user boosting
-----------------------------
Key: LUCENE-3347
URL: https://issues.apache.org/jira/browse/LUCENE-3347
Project: Lucene - Java
Issue Type: Bug
Affects Versions: 3.1
Reporter: moogie
Priority: Minor
The lucene XML parser seems to convert user defined boosting back to default
1.0 and thus boosting value is dropped from the query...
e.g.
<BooleanQuery>
<Clause occurs="must">
<BooleanQuery>
<Clause occurs="should">
<UserQuery fieldName="Vehicle.Colour">red^66
blue~^8</UserQuery>
</Clause>
</BooleanQuery>
</Clause>
<Clause occurs="should">
<BooleanQuery>
<Clause occurs="should">
<UserQuery
fieldName="Vehicle.Colour">black^0.01</UserQuery>
</Clause>
</BooleanQuery>
</Clause>
</BooleanQuery>
produces a lucene query: +( ( Vehicle.Colour:red^66 Vehicle.Colour:blue~0.5^8 )
) ( Vehicle.Colour:black )
The expected query : +( ( Vehicle.Colour:red^66 Vehicle.Colour:blue~0.5^8 ) ) (
Vehicle.Colour:black^0.01 )
I have developed a work around by modifying line 77 of
UserInputQueryBuilder.java
from:
q.setBoost(DOMUtils.getAttribute(e,"boost",1.0f));
to:
q.setBoost( DOMUtils.getAttribute( e, "boost", q.getBoost() ) );
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