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BoostingQueryBuilder.javaAPI DocApache Lucene 2.1.02042Wed Feb 14 10:46:20 GMT 2007org.apache.lucene.xmlparser.builders

BoostingQueryBuilder

public class BoostingQueryBuilder extends Object implements org.apache.lucene.xmlparser.QueryBuilder
Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Fields Summary
private org.apache.lucene.xmlparser.QueryBuilder
factory
float
defaultBoost
Constructors Summary
public BoostingQueryBuilder(org.apache.lucene.xmlparser.QueryBuilder factory)


	   
	
		this.factory=factory;
Methods Summary
public org.apache.lucene.search.QuerygetQuery(org.w3c.dom.Element e)

		
        Element mainQueryElem=DOMUtils.getChildByTagOrFail(e,"Query");
 		mainQueryElem=DOMUtils.getFirstChildOrFail(mainQueryElem);
  		Query mainQuery=factory.getQuery(mainQueryElem);

 		Element boostQueryElem=DOMUtils.getChildByTagOrFail(e,"BoostQuery");
  		float boost=DOMUtils.getAttribute(boostQueryElem,"boost",defaultBoost);
 		boostQueryElem=DOMUtils.getFirstChildOrFail(boostQueryElem);
  		Query boostQuery=factory.getQuery(boostQueryElem);
  		
  		BoostingQuery bq = new BoostingQuery(mainQuery,boostQuery,boost);

  		bq.setBoost(DOMUtils.getAttribute(e,"boost",1.0f));
		return bq;