pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / queryparser / src / java / org / apache / lucene / queryParser / surround / query / NotQuery.java

diff --git a/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/surround/query/NotQuery.java b/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/surround/query/NotQuery.java
new file mode 100644 (file)
index 0000000..a53b639
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+++ b/lucene-java-3.5.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/surround/query/NotQuery.java
@@ -0,0 +1,39 @@
+package org.apache.lucene.queryParser.surround.query;
+/**
+ * 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.
+ */
+
+import java.util.List;
+import org.apache.lucene.search.Query;
+import org.apache.lucene.search.BooleanQuery;
+import org.apache.lucene.search.BooleanClause;
+
+public class NotQuery extends ComposedQuery { 
+  public NotQuery(List<SrndQuery> queries, String opName) { super(queries, true /* infix */, opName); }
+  
+  @Override
+  public Query makeLuceneQueryFieldNoBoost(String fieldName, BasicQueryFactory qf) {
+    List<Query> luceneSubQueries = makeLuceneSubQueriesField(fieldName, qf);
+    BooleanQuery bq = new BooleanQuery();
+    bq.add( luceneSubQueries.get(0), BooleanClause.Occur.MUST);
+    SrndBooleanQuery.addQueriesToBoolean(bq,
+            // FIXME: do not allow weights on prohibited subqueries.
+            luceneSubQueries.subList(1, luceneSubQueries.size()),
+            // later subqueries: not required, prohibited
+            BooleanClause.Occur.MUST_NOT);
+    return bq;
+  }
+}