/*
* Created on 25-Jan-2006
*/
package org.apache.lucene.xmlparser.builders;
import org.apache.lucene.search.BooleanClause;
import org.apache.lucene.search.BooleanFilter;
import org.apache.lucene.search.Filter;
import org.apache.lucene.search.FilterClause;
import org.apache.lucene.xmlparser.DOMUtils;
import org.apache.lucene.xmlparser.FilterBuilder;
import org.apache.lucene.xmlparser.ParserException;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* 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.
*/
/**
*
*/
public class BooleanFilterBuilder implements FilterBuilder {
private FilterBuilder factory;
public BooleanFilterBuilder(FilterBuilder factory)
{
this.factory=factory;
}
public Filter getFilter(Element e) throws ParserException {
BooleanFilter bf=new BooleanFilter();
NodeList nl = e.getChildNodes();
for(int i=0;i<nl.getLength();i++)
{
Node node = nl.item(i);
if(node.getNodeName().equals("Clause"))
{
Element clauseElem=(Element) node;
BooleanClause.Occur occurs=BooleanQueryBuilder.getOccursValue(clauseElem);
Element clauseFilter=DOMUtils.getFirstChildOrFail(clauseElem);
Filter f=factory.getFilter(clauseFilter);
bf.add(new FilterClause(f,occurs));
}
}
return bf;
}
}