pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / src / java / org / apache / lucene / search / PhraseQueue.java

diff --git a/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/search/PhraseQueue.java b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/search/PhraseQueue.java
new file mode 100644 (file)
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--- /dev/null
+++ b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/search/PhraseQueue.java
@@ -0,0 +1,45 @@
+package org.apache.lucene.search;
+
+/**
+ * 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 org.apache.lucene.util.PriorityQueue;
+
+final class PhraseQueue extends PriorityQueue<PhrasePositions> {
+  PhraseQueue(int size) {
+    initialize(size);
+  }
+
+  @Override
+  protected final boolean lessThan(PhrasePositions pp1, PhrasePositions pp2) {
+    if (pp1.doc == pp2.doc) 
+      if (pp1.position == pp2.position)
+        // same doc and pp.position, so decide by actual term positions. 
+        // rely on: pp.position == tp.position - offset. 
+        if (pp1.offset == pp2.offset) {
+          return pp1.ord < pp2.ord;
+        } else {
+          return pp1.offset < pp2.offset;
+        }
+      else {
+        return pp1.position < pp2.position;
+      }
+    else {
+      return pp1.doc < pp2.doc;
+    }
+  }
+}