lucene-java-3.5.0/lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/builders/SpanNotBuilder.java

   1 package org.apache.lucene.xmlparser.builders;
   2
   3 import org.apache.lucene.search.spans.SpanNotQuery;
   4 import org.apache.lucene.search.spans.SpanQuery;
   5 import org.apache.lucene.xmlparser.DOMUtils;
   6 import org.apache.lucene.xmlparser.ParserException;
   7 import org.w3c.dom.Element;
   8 /**
   9  * Licensed to the Apache Software Foundation (ASF) under one or more
  10  * contributor license agreements.  See the NOTICE file distributed with
  11  * this work for additional information regarding copyright ownership.
  12  * The ASF licenses this file to You under the Apache License, Version 2.0
  13  * (the "License"); you may not use this file except in compliance with
  14  * the License.  You may obtain a copy of the License at
  15  *
  16  *     http://www.apache.org/licenses/LICENSE-2.0
  17  *
  18  * Unless required by applicable law or agreed to in writing, software
  19  * distributed under the License is distributed on an "AS IS" BASIS,
  20  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  21  * See the License for the specific language governing permissions and
  22  * limitations under the License.
  23  */
  24
  25 /**
  26  *
  27  */
  28 public class SpanNotBuilder extends SpanBuilderBase
  29 {
  30
  31     SpanQueryBuilder factory;
  32
  33     /**
  34      * @param factory
  35      */
  36     public SpanNotBuilder(SpanQueryBuilder factory)
  37     {
  38         super();
  39         this.factory = factory;
  40     }
  41         public SpanQuery getSpanQuery(Element e) throws ParserException
  42         {
  43             Element includeElem=DOMUtils.getChildByTagOrFail(e,"Include");
  44         includeElem=DOMUtils.getFirstChildOrFail(includeElem);
  45
  46             Element excludeElem=DOMUtils.getChildByTagOrFail(e,"Exclude");
  47         excludeElem=DOMUtils.getFirstChildOrFail(excludeElem);
  48
  49             SpanQuery include=factory.getSpanQuery(includeElem);
  50             SpanQuery exclude=factory.getSpanQuery(excludeElem);
  51
  52                 SpanNotQuery snq = new SpanNotQuery(include,exclude);
  53
  54                 snq.setBoost(DOMUtils.getAttribute(e,"boost",1.0f));
  55                 return snq;
  56         }
  57
  58 }