package org.apache.lucene.benchmark.byTask.tasks;
/**
* 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.util.Collection;
import java.util.Iterator;
import java.util.Map;
import org.apache.lucene.benchmark.byTask.PerfRunData;
import org.apache.lucene.benchmark.byTask.utils.Config;
import org.apache.lucene.index.IndexCommit;
import org.apache.lucene.index.IndexDeletionPolicy;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.store.Directory;
/**
* Open an index reader.
* <br>Other side effects: index reader object in perfRunData is set.
* <br> Optional params readOnly,commitUserData eg. OpenReader(false,commit1)
*/
public class OpenReaderTask extends PerfTask {
public static final String USER_DATA = "userData";
private boolean readOnly = true;
private String commitUserData = null;
public OpenReaderTask(PerfRunData runData) {
super(runData);
}
public int doLogic() throws IOException {
Directory dir = getRunData().getDirectory();
Config config = getRunData().getConfig();
IndexReader r = null;
if (commitUserData != null) {
r = openCommitPoint(commitUserData, dir, config, readOnly);
} else {
IndexDeletionPolicy indexDeletionPolicy = CreateIndexTask.getIndexDeletionPolicy(config);
r = IndexReader.open(dir, indexDeletionPolicy, readOnly);
}
getRunData().setIndexReader(r);
return 1;
}
public static IndexReader openCommitPoint(String userData, Directory dir, Config config, boolean readOnly) throws IOException {
IndexReader r = null;
Collection commits = IndexReader.listCommits(dir);
Iterator i = commits.iterator();
while (i.hasNext()) {
IndexCommit ic = (IndexCommit)i.next();
Map map = ic.getUserData();
String ud = null;
if (map != null) {
ud = (String)map.get(USER_DATA);
}
if (ud != null && ud.equals(userData)) {
IndexDeletionPolicy indexDeletionPolicy = CreateIndexTask.getIndexDeletionPolicy(config);
r = IndexReader.open(ic, indexDeletionPolicy, readOnly);
break;
}
}
if (r == null) throw new IOException("cannot find commitPoint userData:"+userData);
return r;
}
public void setParams(String params) {
super.setParams(params);
if (params != null) {
String[] split = params.split(",");
if (split.length > 0) {
readOnly = Boolean.valueOf(split[0]).booleanValue();
}
if (split.length > 1) {
commitUserData = split[1];
}
}
}
public boolean supportsParams() {
return true;
}
}