pylucene 3.5.0-3

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

diff --git a/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/tasks/ReadTokensTask.java b/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/tasks/ReadTokensTask.java
new file mode 100644 (file)
index 0000000..3d0cafd
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+++ b/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/tasks/ReadTokensTask.java
@@ -0,0 +1,148 @@
+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.Reader;
+import java.util.List;
+
+import org.apache.lucene.analysis.Analyzer;
+import org.apache.lucene.analysis.TokenStream;
+import org.apache.lucene.benchmark.byTask.PerfRunData;
+import org.apache.lucene.benchmark.byTask.feeds.DocMaker;
+import org.apache.lucene.document.Document;
+import org.apache.lucene.document.Fieldable;
+import org.apache.lucene.document.NumericField;
+
+/**
+ * Simple task to test performance of tokenizers.  It just
+ * creates a token stream for each field of the document and
+ * read all tokens out of that stream.
+ */
+public class ReadTokensTask extends PerfTask {
+
+  public ReadTokensTask(PerfRunData runData) {
+    super(runData);
+  }
+
+  private int totalTokenCount = 0;
+  
+  // volatile data passed between setup(), doLogic(), tearDown().
+  private Document doc = null;
+  
+  @Override
+  public void setup() throws Exception {
+    super.setup();
+    DocMaker docMaker = getRunData().getDocMaker();
+    doc = docMaker.makeDocument();
+  }
+
+  @Override
+  protected String getLogMessage(int recsCount) {
+    return "read " + recsCount + " docs; " + totalTokenCount + " tokens";
+  }
+  
+  @Override
+  public void tearDown() throws Exception {
+    doc = null;
+    super.tearDown();
+  }
+
+  @Override
+  public int doLogic() throws Exception {
+    List<Fieldable> fields = doc.getFields();
+    Analyzer analyzer = getRunData().getAnalyzer();
+    int tokenCount = 0;
+    for(final Fieldable field : fields) {
+      if (!field.isTokenized() || field instanceof NumericField) continue;
+      
+      final TokenStream stream;
+      final TokenStream streamValue = field.tokenStreamValue();
+
+      if (streamValue != null) 
+        stream = streamValue;
+      else {
+        // the field does not have a TokenStream,
+        // so we have to obtain one from the analyzer
+        final Reader reader;                     // find or make Reader
+        final Reader readerValue = field.readerValue();
+
+        if (readerValue != null)
+          reader = readerValue;
+        else {
+          String stringValue = field.stringValue();
+          if (stringValue == null)
+            throw new IllegalArgumentException("field must have either TokenStream, String or Reader value");
+          stringReader.init(stringValue);
+          reader = stringReader;
+        }
+        
+        // Tokenize field
+        stream = analyzer.reusableTokenStream(field.name(), reader);
+      }
+
+      // reset the TokenStream to the first token
+      stream.reset();
+
+      while(stream.incrementToken())
+        tokenCount++;
+    }
+    totalTokenCount += tokenCount;
+    return tokenCount;
+  }
+
+  /* Simple StringReader that can be reset to a new string;
+   * we use this when tokenizing the string value from a
+   * Field. */
+  ReusableStringReader stringReader = new ReusableStringReader();
+
+  private final static class ReusableStringReader extends Reader {
+    int upto;
+    int left;
+    String s;
+    
+    ReusableStringReader() {}
+    void init(String s) {
+      this.s = s;
+      left = s.length();
+      this.upto = 0;
+    }
+    @Override
+    public int read(char[] c) {
+      return read(c, 0, c.length);
+    }
+    @Override
+    public int read(char[] c, int off, int len) {
+      if (left > len) {
+        s.getChars(upto, upto+len, c, off);
+        upto += len;
+        left -= len;
+        return len;
+      } else if (0 == left) {
+        return -1;
+      } else {
+        s.getChars(upto, upto+left, c, off);
+        int r = left;
+        left = 0;
+        upto = s.length();
+        return r;
+      }
+    }
+    @Override
+    public void close() {}
+  }
+}