--- /dev/null
+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();
+ }
+}