pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / benchmark / src / java / org / apache / lucene / benchmark / byTask / tasks / OpenIndexTask.java

diff --git a/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/tasks/OpenIndexTask.java b/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/tasks/OpenIndexTask.java
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+++ b/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/tasks/OpenIndexTask.java
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+package org.apache.lucene.benchmark.byTask.tasks;
+
+/**
+ * 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.io.IOException;
+
+import org.apache.lucene.benchmark.byTask.PerfRunData;
+import org.apache.lucene.benchmark.byTask.utils.Config;
+import org.apache.lucene.index.IndexCommit;
+import org.apache.lucene.index.IndexWriter;
+import org.apache.lucene.index.IndexWriter.MaxFieldLength;
+import org.apache.lucene.index.IndexWriterConfig;
+import org.apache.lucene.index.IndexWriterConfig.OpenMode;
+import org.apache.lucene.index.LogMergePolicy;
+
+/**
+ * Open an index writer.
+ * <br>Other side effects: index writer object in perfRunData is set.
+ * <br>Relevant properties: <code>merge.factor, max.buffered,
+ * max.field.length, ram.flush.mb [default 0]</code>.
+ *
+ * <p> Accepts a param specifying the commit point as
+ * previously saved with CommitIndexTask.  If you specify
+ * this, it rolls the index back to that commit on opening
+ * the IndexWriter.
+ */
+public class OpenIndexTask extends PerfTask {
+
+  public static final int DEFAULT_MAX_BUFFERED = IndexWriterConfig.DEFAULT_MAX_BUFFERED_DOCS;
+  public static final int DEFAULT_MAX_FIELD_LENGTH = MaxFieldLength.UNLIMITED.getLimit();
+  public static final int DEFAULT_MERGE_PFACTOR = LogMergePolicy.DEFAULT_MERGE_FACTOR;
+  public static final double DEFAULT_RAM_FLUSH_MB = (int) IndexWriterConfig.DEFAULT_RAM_BUFFER_SIZE_MB;
+  private String commitUserData;
+
+  public OpenIndexTask(PerfRunData runData) {
+    super(runData);
+  }
+
+  @Override
+  public int doLogic() throws IOException {
+    PerfRunData runData = getRunData();
+    Config config = runData.getConfig();
+    final IndexCommit ic;
+    if (commitUserData != null) {
+      ic = OpenReaderTask.findIndexCommit(runData.getDirectory(), commitUserData);
+    } else {
+      ic = null;
+    }
+    
+    final IndexWriter writer = CreateIndexTask.configureWriter(config, runData, OpenMode.APPEND, ic);
+    runData.setIndexWriter(writer);
+    return 1;
+  }
+
+  @Override
+  public void setParams(String params) {
+    super.setParams(params);
+    if (params != null) {
+      // specifies which commit point to open
+      commitUserData = params;
+    }
+  }
+
+  @Override
+  public boolean supportsParams() {
+    return true;
+  }
+}