pylucene 3.5.0-3

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

diff --git a/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/tasks/OpenReaderTask.java b/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/tasks/OpenReaderTask.java
new file mode 100644 (file)
index 0000000..8bc1c94
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+++ b/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/tasks/OpenReaderTask.java
@@ -0,0 +1,105 @@
+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 java.util.Collection;
+import java.util.Map;
+
+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.IndexDeletionPolicy;
+import org.apache.lucene.index.IndexReader;
+import org.apache.lucene.store.Directory;
+
+/**
+ * Open an index reader.
+ * <br>Other side effects: index reader object in perfRunData is set.
+ * <br> Optional params readOnly,commitUserData eg. OpenReader(false,commit1)
+ */
+public class OpenReaderTask extends PerfTask {
+  public static final String USER_DATA = "userData";
+  private boolean readOnly = true;
+  private String commitUserData = null;
+
+  public OpenReaderTask(PerfRunData runData) {
+    super(runData);
+  }
+
+  @Override
+  public int doLogic() throws IOException {
+    Directory dir = getRunData().getDirectory();
+    Config config = getRunData().getConfig();
+    IndexReader r = null;
+    final IndexDeletionPolicy deletionPolicy;
+    if (readOnly) {
+      deletionPolicy = null;
+    } else {
+      deletionPolicy = CreateIndexTask.getIndexDeletionPolicy(config);
+    }
+    if (commitUserData != null) {
+      r = IndexReader.open(OpenReaderTask.findIndexCommit(dir, commitUserData),
+                           deletionPolicy,
+                           readOnly); 
+    } else {
+      r = IndexReader.open(dir,
+                           deletionPolicy,
+                           readOnly); 
+    }
+    getRunData().setIndexReader(r);
+    // We transfer reference to the run data
+    r.decRef();
+    return 1;
+  }
+ 
+  @Override
+  public void setParams(String params) {
+    super.setParams(params);
+    if (params != null) {
+      String[] split = params.split(",");
+      if (split.length > 0) {
+        readOnly = Boolean.valueOf(split[0]).booleanValue();
+      }
+      if (split.length > 1) {
+        commitUserData = split[1];
+      }
+    }
+  }
+
+  @Override
+  public boolean supportsParams() {
+    return true;
+  }
+
+  public static IndexCommit findIndexCommit(Directory dir, String userData) throws IOException {
+    Collection<IndexCommit> commits = IndexReader.listCommits(dir);
+    for (final IndexCommit ic : commits) {
+      Map<String,String> map = ic.getUserData();
+      String ud = null;
+      if (map != null) {
+        ud = map.get(USER_DATA);
+      }
+      if (ud != null && ud.equals(userData)) {
+        return ic;
+      }
+    }
+
+    throw new IOException("index does not contain commit with userData: " + userData);
+  }
+}