1 package org.apache.lucene.benchmark.byTask.tasks;
3 * Copyright 2005 The Apache Software Foundation
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
19 import org.apache.lucene.benchmark.byTask.PerfRunData;
20 import org.apache.lucene.document.FieldSelector;
21 import org.apache.lucene.document.SetBasedFieldSelector;
22 import org.apache.lucene.document.Document;
23 import org.apache.lucene.index.IndexReader;
25 import java.util.StringTokenizer;
27 import java.util.HashSet;
28 import java.util.Collections;
29 import java.io.IOException;
32 * Search and Traverse and Retrieve docs task using a SetBasedFieldSelector.
34 * <p>Note: This task reuses the reader if it is already open.
35 * Otherwise a reader is opened at start and closed at the end.
37 * <p>Takes optional param: comma separated list of Fields to load.</p>
39 * <p>Other side effects: counts additional 1 (record) for each traversed hit,
40 * and 1 more for each retrieved (non null) document.</p>
42 public class SearchTravRetLoadFieldSelectorTask extends SearchTravTask {
44 protected FieldSelector fieldSelector;
45 public SearchTravRetLoadFieldSelectorTask(PerfRunData runData) {
51 public boolean withRetrieve() {
57 protected Document retrieveDoc(IndexReader ir, int id) throws IOException {
58 return ir.document(id, fieldSelector);
62 public void setParams(String params) {
63 this.params = params; // cannot just call super.setParams(), b/c it's params differ.
64 Set<String> fieldsToLoad = new HashSet<String>();
65 for (StringTokenizer tokenizer = new StringTokenizer(params, ","); tokenizer.hasMoreTokens();) {
66 String s = tokenizer.nextToken();
69 fieldSelector = new SetBasedFieldSelector(fieldsToLoad, Collections.<String> emptySet());
74 * @see org.apache.lucene.benchmark.byTask.tasks.PerfTask#supportsParams()
77 public boolean supportsParams() {