[LUCENE-3347] XMLparser drops user boosting

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.1
• Fix Version/s: 3.4, 4.0-ALPHA
• Lucene Fields: New
• Assignee: Uwe Schindler
• Reporter: moogie
• Created: 28/Jul/11 07:24
• Updated: 28/Aug/22 12:54
• Resolved: 30/Jul/11 22:09

Description

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() ) );