pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / src / test / org / apache / lucene / search / payloads / PayloadHelper.java

diff --git a/lucene-java-3.5.0/lucene/src/test/org/apache/lucene/search/payloads/PayloadHelper.java b/lucene-java-3.5.0/lucene/src/test/org/apache/lucene/search/payloads/PayloadHelper.java
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+++ b/lucene-java-3.5.0/lucene/src/test/org/apache/lucene/search/payloads/PayloadHelper.java
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+package org.apache.lucene.search.payloads;
+
+/**
+ * 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.IOException;
+import java.io.Reader;
+import java.util.Random;
+
+import org.apache.lucene.analysis.*;
+import org.apache.lucene.analysis.tokenattributes.PayloadAttribute;
+import org.apache.lucene.document.Document;
+import org.apache.lucene.document.Field;
+import org.apache.lucene.util.LuceneTestCase;
+import org.apache.lucene.index.IndexReader;
+import org.apache.lucene.index.IndexWriter;
+import org.apache.lucene.index.IndexWriterConfig;
+import org.apache.lucene.index.Payload;
+import org.apache.lucene.search.IndexSearcher;
+import org.apache.lucene.search.Similarity;
+import org.apache.lucene.store.Directory;
+import org.apache.lucene.store.MockDirectoryWrapper;
+import org.apache.lucene.store.RAMDirectory;
+import org.apache.lucene.util.English;
+
+import static org.apache.lucene.util.LuceneTestCase.TEST_VERSION_CURRENT;
+
+/**
+ *
+ *
+ **/
+public class PayloadHelper {
+
+  private byte[] payloadField = new byte[]{1};
+  private byte[] payloadMultiField1 = new byte[]{2};
+  private byte[] payloadMultiField2 = new byte[]{4};
+  public static final String NO_PAYLOAD_FIELD = "noPayloadField";
+  public static final String MULTI_FIELD = "multiField";
+  public static final String FIELD = "field";
+
+  public IndexReader reader;
+
+  public final class PayloadAnalyzer extends Analyzer {
+
+
+    @Override
+    public TokenStream tokenStream(String fieldName, Reader reader) {
+      TokenStream result = new LowerCaseTokenizer(TEST_VERSION_CURRENT, reader);
+      result = new PayloadFilter(result, fieldName);
+      return result;
+    }
+  }
+
+  public final class PayloadFilter extends TokenFilter {
+    private final String fieldName;
+    private int numSeen = 0;
+    private final PayloadAttribute payloadAtt;
+    
+    public PayloadFilter(TokenStream input, String fieldName) {
+      super(input);
+      this.fieldName = fieldName;
+      payloadAtt = addAttribute(PayloadAttribute.class);
+    }
+
+    @Override
+    public boolean incrementToken() throws IOException {
+      
+      if (input.incrementToken()) {
+        if (fieldName.equals(FIELD)) {
+          payloadAtt.setPayload(new Payload(payloadField));
+        } else if (fieldName.equals(MULTI_FIELD)) {
+          if (numSeen  % 2 == 0) {
+            payloadAtt.setPayload(new Payload(payloadMultiField1));
+          }
+          else {
+            payloadAtt.setPayload(new Payload(payloadMultiField2));
+          }
+          numSeen++;
+        }
+        return true;
+      }
+      return false;
+    }
+
+    @Override
+    public void reset() throws IOException {
+      super.reset();
+      this.numSeen = 0;
+    }
+  }
+
+  /**
+   * Sets up a RAMDirectory, and adds documents (using English.intToEnglish()) with two fields: field and multiField
+   * and analyzes them using the PayloadAnalyzer
+   * @param similarity The Similarity class to use in the Searcher
+   * @param numDocs The num docs to add
+   * @return An IndexSearcher
+   * @throws IOException
+   */
+  // TODO: randomize
+  public IndexSearcher setUp(Random random, Similarity similarity, int numDocs) throws IOException {
+    Directory directory = new MockDirectoryWrapper(random, new RAMDirectory());
+    PayloadAnalyzer analyzer = new PayloadAnalyzer();
+    IndexWriter writer = new IndexWriter(directory, new IndexWriterConfig(
+        TEST_VERSION_CURRENT, analyzer).setSimilarity(similarity));
+    // writer.infoStream = System.out;
+    for (int i = 0; i < numDocs; i++) {
+      Document doc = new Document();
+      doc.add(new Field(FIELD, English.intToEnglish(i), Field.Store.YES, Field.Index.ANALYZED));
+      doc.add(new Field(MULTI_FIELD, English.intToEnglish(i) + "  " + English.intToEnglish(i), Field.Store.YES, Field.Index.ANALYZED));
+      doc.add(new Field(NO_PAYLOAD_FIELD, English.intToEnglish(i), Field.Store.YES, Field.Index.ANALYZED));
+      writer.addDocument(doc);
+    }
+    reader = IndexReader.open(writer, true);
+    writer.close();
+
+    IndexSearcher searcher = LuceneTestCase.newSearcher(reader);
+    searcher.setSimilarity(similarity);
+    return searcher;
+  }
+
+  public void tearDown() throws Exception {
+    reader.close();
+  }
+}