+++ /dev/null
-/*
- * Created on 25-Jan-2006
- */
-package org.apache.lucene.xmlparser.builders;
-
-import org.apache.lucene.search.BooleanClause;
-import org.apache.lucene.search.BooleanQuery;
-import org.apache.lucene.search.Query;
-import org.apache.lucene.xmlparser.DOMUtils;
-import org.apache.lucene.xmlparser.ParserException;
-import org.apache.lucene.xmlparser.QueryBuilder;
-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 BooleanQueryBuilder implements QueryBuilder {
-
- private QueryBuilder factory;
-
- public BooleanQueryBuilder(QueryBuilder factory)
- {
- this.factory=factory;
- }
-
- /* (non-Javadoc)
- * @see org.apache.lucene.xmlparser.QueryObjectBuilder#process(org.w3c.dom.Element)
- */
- public Query getQuery(Element e) throws ParserException {
- BooleanQuery bq=new BooleanQuery(DOMUtils.getAttribute(e,"disableCoord",false));
- bq.setMinimumNumberShouldMatch(DOMUtils.getAttribute(e,"minimumNumberShouldMatch",0));
- bq.setBoost(DOMUtils.getAttribute(e,"boost",1.0f));
-
- 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=getOccursValue(clauseElem);
-
- Element clauseQuery=DOMUtils.getFirstChildOrFail(clauseElem);
- Query q=factory.getQuery(clauseQuery);
- bq.add(new BooleanClause(q,occurs));
- }
- }
-
- return bq;
- }
- static BooleanClause.Occur getOccursValue(Element clauseElem) throws ParserException
- {
- String occs=clauseElem.getAttribute("occurs");
- BooleanClause.Occur occurs=BooleanClause.Occur.SHOULD;
- if("must".equalsIgnoreCase(occs))
- {
- occurs=BooleanClause.Occur.MUST;
- }
- else
- {
- if("mustNot".equalsIgnoreCase(occs))
- {
- occurs=BooleanClause.Occur.MUST_NOT;
- }
- else
- {
- if(("should".equalsIgnoreCase(occs))||("".equals(occs)))
- {
- occurs=BooleanClause.Occur.SHOULD;
- }
- else
- {
- if(occs!=null)
- {
- throw new ParserException("Invalid value for \"occurs\" attribute of clause:"+occs);
- }
- }
- }
- }
- return occurs;
-
- }
-
-}