pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / src / test / org / apache / lucene / index / TestForTooMuchCloning.java

diff --git a/lucene-java-3.5.0/lucene/src/test/org/apache/lucene/index/TestForTooMuchCloning.java b/lucene-java-3.5.0/lucene/src/test/org/apache/lucene/index/TestForTooMuchCloning.java
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+++ b/lucene-java-3.5.0/lucene/src/test/org/apache/lucene/index/TestForTooMuchCloning.java
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+package org.apache.lucene.index;
+
+/**
+ * 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.*;
+
+import org.apache.lucene.analysis.MockAnalyzer;
+import org.apache.lucene.document.Document;
+import org.apache.lucene.document.Field;
+import org.apache.lucene.search.IndexSearcher;
+import org.apache.lucene.search.TermRangeQuery;
+import org.apache.lucene.search.TopDocs;
+import org.apache.lucene.store.MockDirectoryWrapper;
+import org.apache.lucene.util.BytesRef;
+import org.apache.lucene.util.LuceneTestCase;
+import org.apache.lucene.util._TestUtil;
+
+public class TestForTooMuchCloning extends LuceneTestCase {
+
+  // Make sure we don't clone IndexInputs too frequently
+  // during merging:
+  public void test() throws Exception {
+    final MockDirectoryWrapper dir = newDirectory();
+    final TieredMergePolicy tmp = new TieredMergePolicy();
+    tmp.setMaxMergeAtOnce(2);
+    final RandomIndexWriter w = new RandomIndexWriter(random, dir,
+                                                      newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random)).setMaxBufferedDocs(2).setMergePolicy(tmp));
+    final int numDocs = 20;
+    for(int docs=0;docs<numDocs;docs++) {
+      StringBuilder sb = new StringBuilder();
+      for(int terms=0;terms<100;terms++) {
+        sb.append(_TestUtil.randomRealisticUnicodeString(random));
+        sb.append(' ');
+      }
+      final Document doc = new Document();
+      doc.add(newField("field", sb.toString(), Field.Store.NO, Field.Index.ANALYZED));
+      w.addDocument(doc);
+    }
+    final IndexReader r = w.getReader();
+    w.close();
+
+    final int cloneCount = dir.getInputCloneCount();
+    //System.out.println("merge clone count=" + cloneCount);
+    assertTrue("too many calls to IndexInput.clone during merging: " + dir.getInputCloneCount(), cloneCount < 500);
+
+    final IndexSearcher s = new IndexSearcher(r);
+
+    // MTQ that matches all terms so the AUTO_REWRITE should
+    // cutover to filter rewrite and reuse a single DocsEnum
+    // across all terms;
+    final TopDocs hits = s.search(new TermRangeQuery("field",
+                                                     "",
+                                                     "\uFFFF",
+                                                     true,
+                                                     true), 10);
+    assertTrue(hits.totalHits > 0);
+    final int queryCloneCount = dir.getInputCloneCount() - cloneCount;
+    //System.out.println("query clone count=" + queryCloneCount);
+    assertTrue("too many calls to IndexInput.clone during TermRangeQuery: " + queryCloneCount, queryCloneCount < 50);
+    s.close();
+    r.close();
+    dir.close();
+  }
+}