package org.apache.lucene.benchmark.byTask.tasks;
/**
* Copyright 2005 The Apache Software Foundation
*
* Licensed 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 org.apache.lucene.benchmark.byTask.PerfRunData;
import org.apache.lucene.document.FieldSelector;
import org.apache.lucene.document.SetBasedFieldSelector;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.IndexReader;
import java.util.StringTokenizer;
import java.util.Set;
import java.util.HashSet;
import java.util.Collections;
import java.io.IOException;
/**
* Search and Traverse and Retrieve docs task using a SetBasedFieldSelector.
*
* <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 FieldSelector fieldSelector;
public SearchTravRetLoadFieldSelectorTask(PerfRunData runData) {
super(runData);
}
public boolean withRetrieve() {
return true;
}
protected Document retrieveDoc(IndexReader ir, int id) throws IOException {
return ir.document(id, fieldSelector);
}
public void setParams(String params) {
this.params = params; // cannot just call super.setParams(), b/c it's params differ.
Set fieldsToLoad = new HashSet();
for (StringTokenizer tokenizer = new StringTokenizer(params, ","); tokenizer.hasMoreTokens();) {
String s = tokenizer.nextToken();
fieldsToLoad.add(s);
}
fieldSelector = new SetBasedFieldSelector(fieldsToLoad, Collections.EMPTY_SET);
}
/* (non-Javadoc)
* @see org.apache.lucene.benchmark.byTask.tasks.PerfTask#supportsParams()
*/
public boolean supportsParams() {
return true;
}
}