/*
* 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.geode.cache.lucene.internal.cli.functions;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
import org.apache.geode.cache.Cache;
import org.apache.geode.cache.CacheFactory;
import org.apache.geode.cache.execute.FunctionAdapter;
import org.apache.geode.cache.execute.FunctionContext;
import org.apache.geode.cache.lucene.LuceneQuery;
import org.apache.geode.cache.lucene.LuceneQueryException;
import org.apache.geode.cache.lucene.LuceneResultStruct;
import org.apache.geode.cache.lucene.LuceneService;
import org.apache.geode.cache.lucene.LuceneServiceProvider;
import org.apache.geode.cache.lucene.PageableLuceneQueryResults;
import org.apache.geode.cache.lucene.internal.cli.LuceneIndexDetails;
import org.apache.geode.cache.lucene.internal.cli.LuceneIndexInfo;
import org.apache.geode.cache.lucene.internal.cli.LuceneQueryInfo;
import org.apache.geode.cache.lucene.internal.cli.LuceneSearchResults;
import org.apache.geode.cache.query.RegionNotFoundException;
import org.apache.geode.internal.InternalEntity;
/**
* The LuceneSearchIndexFunction class is a function used to collect the information on a particular
* lucene index.
* </p>
*
* @see Cache
* @see org.apache.geode.cache.execute.Function
* @see FunctionAdapter
* @see FunctionContext
* @see InternalEntity
* @see LuceneIndexDetails
* @see LuceneIndexInfo
*/
@SuppressWarnings("unused")
public class LuceneSearchIndexFunction<K, V> extends FunctionAdapter implements InternalEntity {
protected Cache getCache() {
return CacheFactory.getAnyInstance();
}
public String getId() {
return LuceneSearchIndexFunction.class.getName();
}
public void execute(final FunctionContext context) {
Set<LuceneSearchResults> result = new HashSet<>();
final Cache cache = getCache();
final LuceneQueryInfo queryInfo = (LuceneQueryInfo) context.getArguments();
LuceneService luceneService = LuceneServiceProvider.get(getCache());
try {
if (luceneService.getIndex(queryInfo.getIndexName(), queryInfo.getRegionPath()) == null) {
throw new Exception("Index " + queryInfo.getIndexName() + " not found on region "
+ queryInfo.getRegionPath());
}
final LuceneQuery<K, V> query = luceneService.createLuceneQueryFactory()
.setResultLimit(queryInfo.getLimit()).create(queryInfo.getIndexName(),
queryInfo.getRegionPath(), queryInfo.getQueryString(), queryInfo.getDefaultField());
if (queryInfo.getKeysOnly()) {
query.findKeys().forEach(key -> result.add(new LuceneSearchResults(key.toString())));
} else {
PageableLuceneQueryResults pageableLuceneQueryResults = query.findPages();
while (pageableLuceneQueryResults.hasNext()) {
List<LuceneResultStruct> page = pageableLuceneQueryResults.next();
page.stream()
.forEach(searchResult -> result
.add(new LuceneSearchResults<K, V>(searchResult.getKey().toString(),
searchResult.getValue().toString(), searchResult.getScore())));
}
}
if (result != null) {
context.getResultSender().lastResult(result);
}
} catch (LuceneQueryException e) {
result.add(new LuceneSearchResults(true, e.getRootCause().getMessage()));
context.getResultSender().lastResult(result);
} catch (Exception e) {
result.add(new LuceneSearchResults(true, e.getMessage()));
context.getResultSender().lastResult(result);
}
}
}