| /* |
| * 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.byTask.tasks; |
| |
| import java.io.IOException; |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.StringTokenizer; |
| |
| import org.apache.lucene.benchmark.byTask.PerfRunData; |
| import org.apache.lucene.document.Document; |
| import org.apache.lucene.document.DocumentStoredFieldVisitor; |
| import org.apache.lucene.index.IndexReader; |
| |
| /** |
| * Search and Traverse and Retrieve docs task using a |
| * FieldVisitor loading only the requested fields. |
| * |
| * <p>Note: This task reuses the reader if it is already open. |
| * Otherwise a reader is opened at start and closed at the end. |
| * |
| * <p>Takes optional param: comma separated list of Fields to load.</p> |
| * |
| * <p>Other side effects: counts additional 1 (record) for each traversed hit, |
| * and 1 more for each retrieved (non null) document.</p> |
| */ |
| public class SearchTravRetLoadFieldSelectorTask extends SearchTravTask { |
| |
| protected Set<String> fieldsToLoad; |
| |
| public SearchTravRetLoadFieldSelectorTask(PerfRunData runData) { |
| super(runData); |
| |
| } |
| |
| @Override |
| public boolean withRetrieve() { |
| return true; |
| } |
| |
| |
| @Override |
| protected Document retrieveDoc(IndexReader ir, int id) throws IOException { |
| if (fieldsToLoad == null) { |
| return ir.document(id); |
| } else { |
| DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(fieldsToLoad); |
| ir.document(id, visitor); |
| return visitor.getDocument(); |
| } |
| } |
| |
| @Override |
| public void setParams(String params) { |
| this.params = params; // cannot just call super.setParams(), b/c its params differ. |
| fieldsToLoad = new HashSet<>(); |
| for (StringTokenizer tokenizer = new StringTokenizer(params, ","); tokenizer.hasMoreTokens();) { |
| String s = tokenizer.nextToken(); |
| fieldsToLoad.add(s); |
| } |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see org.apache.lucene.benchmark.byTask.tasks.PerfTask#supportsParams() |
| */ |
| @Override |
| public boolean supportsParams() { |
| return true; |
| } |
| } |