pylucene 3.5.0-3

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

diff --git a/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/tasks/SearchTravRetLoadFieldSelectorTask.java b/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/tasks/SearchTravRetLoadFieldSelectorTask.java
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+package org.apache.lucene.benchmark.byTask.tasks;
+/**
+ * Copyright 2005 The Apache Software Foundation
+ *
+ * Licensed 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.document.FieldSelector;
+import org.apache.lucene.document.SetBasedFieldSelector;
+import org.apache.lucene.document.Document;
+import org.apache.lucene.index.IndexReader;
+
+import java.util.StringTokenizer;
+import java.util.Set;
+import java.util.HashSet;
+import java.util.Collections;
+import java.io.IOException;
+
+/**
+ * Search and Traverse and Retrieve docs task using a SetBasedFieldSelector.
+ *
+ * <p>Note: This task reuses the reader if it is already open.
+ * Otherwise a reader is opened at start and closed at the end.
+ *
+ * <p>Takes optional param: comma separated list of Fields to load.</p>
+ * 
+ * <p>Other side effects: counts additional 1 (record) for each traversed hit, 
+ * and 1 more for each retrieved (non null) document.</p>
+ */
+public class SearchTravRetLoadFieldSelectorTask extends SearchTravTask {
+
+  protected FieldSelector fieldSelector;
+  public SearchTravRetLoadFieldSelectorTask(PerfRunData runData) {
+    super(runData);
+    
+  }
+
+  @Override
+  public boolean withRetrieve() {
+    return true;
+  }
+
+
+  @Override
+  protected Document retrieveDoc(IndexReader ir, int id) throws IOException {
+    return ir.document(id, fieldSelector);
+  }
+
+  @Override
+  public void setParams(String params) {
+    this.params = params; // cannot just call super.setParams(), b/c it's params differ.
+    Set<String> fieldsToLoad = new HashSet<String>();
+    for (StringTokenizer tokenizer = new StringTokenizer(params, ","); tokenizer.hasMoreTokens();) {
+      String s = tokenizer.nextToken();
+      fieldsToLoad.add(s);
+    }
+    fieldSelector = new SetBasedFieldSelector(fieldsToLoad, Collections.<String> emptySet());
+  }
+
+
+  /* (non-Javadoc)
+  * @see org.apache.lucene.benchmark.byTask.tasks.PerfTask#supportsParams()
+  */
+  @Override
+  public boolean supportsParams() {
+    return true;
+  }
+}