pylucene 3.5.0-3

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

diff --git a/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/tasks/NewAnalyzerTask.java b/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/tasks/NewAnalyzerTask.java
new file mode 100644 (file)
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+++ b/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/tasks/NewAnalyzerTask.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.analysis.Analyzer;
+import org.apache.lucene.benchmark.byTask.PerfRunData;
+import org.apache.lucene.util.Version;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.StringTokenizer;
+import java.lang.reflect.Constructor;
+
+/**
+ * Create a new {@link org.apache.lucene.analysis.Analyzer} and set it it in the getRunData() for use by all future tasks.
+ *
+ */
+public class NewAnalyzerTask extends PerfTask {
+  private List<String> analyzerClassNames;
+  private int current;
+
+  public NewAnalyzerTask(PerfRunData runData) {
+    super(runData);
+    analyzerClassNames = new ArrayList<String>();
+  }
+  
+  public static final Analyzer createAnalyzer(String className) throws Exception{
+    final Class<? extends Analyzer> clazz = Class.forName(className).asSubclass(Analyzer.class);
+    try {
+      // first try to use a ctor with version parameter (needed for many new Analyzers that have no default one anymore
+      Constructor<? extends Analyzer> cnstr = clazz.getConstructor(Version.class);
+      return cnstr.newInstance(Version.LUCENE_CURRENT);
+    } catch (NoSuchMethodException nsme) {
+      // otherwise use default ctor
+      return clazz.newInstance();
+    }
+  }
+
+  @Override
+  public int doLogic() throws IOException {
+    String className = null;
+    try {
+      if (current >= analyzerClassNames.size())
+      {
+        current = 0;
+      }
+      className = analyzerClassNames.get(current++);
+      if (className == null || className.equals(""))
+      {
+        className = "org.apache.lucene.analysis.standard.StandardAnalyzer"; 
+      }
+      if (className.indexOf(".") == -1  || className.startsWith("standard."))//there is no package name, assume o.a.l.analysis
+      {
+        className = "org.apache.lucene.analysis." + className;
+      }
+      getRunData().setAnalyzer(createAnalyzer(className));
+      System.out.println("Changed Analyzer to: " + className);
+    } catch (Exception e) {
+      throw new RuntimeException("Error creating Analyzer: " + className, e);
+    }
+    return 1;
+  }
+
+  /**
+   * Set the params (analyzerClassName only),  Comma-separate list of Analyzer class names.  If the Analyzer lives in
+   * org.apache.lucene.analysis, the name can be shortened by dropping the o.a.l.a part of the Fully Qualified Class Name.
+   * <p/>
+   * Example Declaration: {"NewAnalyzer" NewAnalyzer(WhitespaceAnalyzer, SimpleAnalyzer, StopAnalyzer, standard.StandardAnalyzer) >
+   * @param params analyzerClassName, or empty for the StandardAnalyzer
+   */
+  @Override
+  public void setParams(String params) {
+    super.setParams(params);
+    for (StringTokenizer tokenizer = new StringTokenizer(params, ","); tokenizer.hasMoreTokens();) {
+      String s = tokenizer.nextToken();
+      analyzerClassNames.add(s.trim());
+    }
+  }
+
+  /* (non-Javadoc)
+   * @see org.apache.lucene.benchmark.byTask.tasks.PerfTask#supportsParams()
+   */
+  @Override
+  public boolean supportsParams() {
+    return true;
+  }
+}