pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / benchmark / src / java / org / apache / lucene / benchmark / quality / trec / Trec1MQReader.java

diff --git a/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/quality/trec/Trec1MQReader.java b/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/quality/trec/Trec1MQReader.java
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+++ b/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/quality/trec/Trec1MQReader.java
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+/**
+ * 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.
+ */
+package org.apache.lucene.benchmark.quality.trec;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+
+import org.apache.lucene.benchmark.quality.QualityQuery;
+
+/**
+ * Read topics of TREC 1MQ track.
+ * <p>
+ * Expects this topic format -
+ * <pre>
+ *   qnum:qtext
+ * </pre>
+ * Comment lines starting with '#' are ignored.
+ * <p>
+ * All topics will have a single name value pair.
+ */
+public class Trec1MQReader {
+
+  private String name;
+  
+  /**
+   *  Constructor for Trec's 1MQ TopicsReader
+   *  @param name name of name-value pair to set for all queries.
+   */
+  public Trec1MQReader(String name) {
+    super();
+    this.name = name;
+  }
+
+  /**
+   * Read quality queries from trec 1MQ format topics file.
+   * @param reader where queries are read from.
+   * @return the result quality queries.
+   * @throws IOException if cannot read the queries.
+   */
+  public QualityQuery[] readQueries(BufferedReader reader) throws IOException {
+    ArrayList<QualityQuery> res = new ArrayList<QualityQuery>();
+    String line;
+    try {
+      while (null!=(line=reader.readLine())) {
+        line = line.trim();
+        if (line.startsWith("#")) {
+          continue;
+        }
+        // id
+        int k = line.indexOf(":");
+        String id = line.substring(0,k).trim();
+        // qtext
+        String qtext = line.substring(k+1).trim();
+        // we got a topic!
+        HashMap<String,String> fields = new HashMap<String,String>();
+        fields.put(name,qtext);
+        //System.out.println("id: "+id+" qtext: "+qtext+"  line: "+line);
+        QualityQuery topic = new QualityQuery(id,fields);
+        res.add(topic);
+      }
+    } finally {
+      reader.close();
+    }
+    // sort result array (by ID) 
+    QualityQuery qq[] = res.toArray(new QualityQuery[0]);
+    Arrays.sort(qq);
+    return qq;
+  }
+
+}