pylucene 3.5.0-3

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

diff --git a/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/tasks/DeleteDocTask.java b/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/tasks/DeleteDocTask.java
new file mode 100644 (file)
index 0000000..52bf501
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+++ b/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/tasks/DeleteDocTask.java
@@ -0,0 +1,90 @@
+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 org.apache.lucene.benchmark.byTask.PerfRunData;
+import org.apache.lucene.index.IndexReader;
+
+/**
+ * Delete a document by docid. If no docid param is supplied, deletes doc with
+ * <code>id = last-deleted-doc + doc.delete.step</code>.
+ */
+public class DeleteDocTask extends PerfTask {
+
+  /**
+   * Gap between ids of deleted docs, applies when no docid param is provided.
+   */
+  public static final int DEFAULT_DOC_DELETE_STEP = 8;
+  
+  public DeleteDocTask(PerfRunData runData) {
+    super(runData);
+  }
+
+  private int deleteStep = -1;
+  private static int lastDeleted = -1;
+
+  private int docid = -1;
+  private boolean byStep = true;
+  
+  @Override
+  public int doLogic() throws Exception {
+    IndexReader r = getRunData().getIndexReader();
+    r.deleteDocument(docid);
+    lastDeleted = docid;
+    r.decRef();
+    return 1; // one work item done here
+  }
+
+  /* (non-Javadoc)
+   * @see org.apache.lucene.benchmark.byTask.tasks.PerfTask#setup()
+   */
+  @Override
+  public void setup() throws Exception {
+    super.setup();
+    if (deleteStep<0) {
+      deleteStep = getRunData().getConfig().get("doc.delete.step",DEFAULT_DOC_DELETE_STEP);
+    }
+    // set the docid to be deleted
+    docid = (byStep ? lastDeleted + deleteStep : docid);
+  }
+
+  @Override
+  protected String getLogMessage(int recsCount) {
+    return "deleted " + recsCount + " docs, last deleted: " + lastDeleted;
+  }
+  
+  /**
+   * Set the params (docid only)
+   * @param params docid to delete, or -1 for deleting by delete gap settings.
+   */
+  @Override
+  public void setParams(String params) {
+    super.setParams(params);
+    docid = (int) Float.parseFloat(params);
+    byStep = (docid < 0);
+  }
+  
+  /* (non-Javadoc)
+   * @see org.apache.lucene.benchmark.byTask.tasks.PerfTask#supportsParams()
+   */
+  @Override
+  public boolean supportsParams() {
+    return true;
+  }
+
+}