| /* |
| * 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.jackrabbit.oak.plugins.index.lucene; |
| |
| import static com.google.common.base.Preconditions.checkState; |
| import static org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndexConstants.INDEX_DATA_CHILD_NAME; |
| import static org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndexConstants.PERSISTENCE_FILE; |
| import static org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndexConstants.PERSISTENCE_NAME; |
| import static org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndexConstants.PERSISTENCE_PATH; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.concurrent.locks.ReadWriteLock; |
| import java.util.concurrent.locks.ReentrantReadWriteLock; |
| |
| import javax.annotation.Nullable; |
| |
| import org.apache.jackrabbit.oak.commons.PathUtils; |
| import org.apache.jackrabbit.oak.plugins.index.lucene.util.SuggestHelper; |
| import org.apache.jackrabbit.oak.spi.state.NodeState; |
| import org.apache.jackrabbit.oak.spi.state.ReadOnlyBuilder; |
| import org.apache.lucene.index.DirectoryReader; |
| import org.apache.lucene.index.IndexReader; |
| import org.apache.lucene.search.IndexSearcher; |
| import org.apache.lucene.search.suggest.analyzing.AnalyzingInfixSuggester; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.store.FSDirectory; |
| |
| class IndexNode { |
| |
| static IndexNode open(String indexPath, NodeState root, NodeState defnNodeState, @Nullable IndexCopier cloner) |
| throws IOException { |
| Directory directory = null; |
| IndexDefinition definition = new IndexDefinition(root, defnNodeState); |
| NodeState data = defnNodeState.getChildNode(INDEX_DATA_CHILD_NAME); |
| if (data.exists()) { |
| directory = new OakDirectory(new ReadOnlyBuilder(defnNodeState), definition, true); |
| if (cloner != null) { |
| directory = cloner.wrapForRead(indexPath, definition, directory); |
| } |
| } else if (PERSISTENCE_FILE.equalsIgnoreCase(defnNodeState.getString(PERSISTENCE_NAME))) { |
| String path = defnNodeState.getString(PERSISTENCE_PATH); |
| if (path != null && new File(path).exists()) { |
| directory = FSDirectory.open(new File(path)); |
| } |
| } |
| |
| if (directory != null) { |
| try { |
| OakDirectory suggestDirectory = null; |
| if (definition.isSuggestEnabled()) { |
| suggestDirectory = new OakDirectory(defnNodeState.builder(), ":suggest-data", definition, false); |
| } |
| |
| IndexNode index = new IndexNode(PathUtils.getName(indexPath), definition, directory, suggestDirectory); |
| directory = null; // closed in Index.close() |
| return index; |
| } finally { |
| if (directory != null) { |
| directory.close(); |
| } |
| } |
| } |
| |
| return null; |
| } |
| |
| private final String name; |
| |
| private final IndexDefinition definition; |
| |
| private final Directory directory; |
| |
| private final Directory suggestDirectory; |
| |
| private final IndexReader reader; |
| |
| private final IndexSearcher searcher; |
| |
| private final ReadWriteLock lock = new ReentrantReadWriteLock(); |
| |
| private final AnalyzingInfixSuggester lookup; |
| |
| private boolean closed = false; |
| |
| IndexNode(String name, IndexDefinition definition, Directory directory, final OakDirectory suggestDirectory) |
| throws IOException { |
| this.name = name; |
| this.definition = definition; |
| this.directory = directory; |
| this.reader = DirectoryReader.open(directory); |
| this.searcher = new IndexSearcher(reader); |
| this.suggestDirectory = suggestDirectory; |
| if (suggestDirectory != null) { |
| this.lookup = SuggestHelper.getLookup(suggestDirectory, definition.getAnalyzer()); |
| } else { |
| this.lookup = null; |
| } |
| } |
| |
| String getName() { |
| return name; |
| } |
| |
| IndexDefinition getDefinition() { |
| return definition; |
| } |
| |
| IndexSearcher getSearcher() { |
| return searcher; |
| } |
| |
| Directory getSuggestDirectory() { |
| return suggestDirectory; |
| } |
| |
| AnalyzingInfixSuggester getLookup() { |
| return lookup; |
| } |
| |
| boolean acquire() { |
| lock.readLock().lock(); |
| if (closed) { |
| lock.readLock().unlock(); |
| return false; |
| } else { |
| return true; |
| } |
| } |
| |
| void release() { |
| lock.readLock().unlock(); |
| } |
| |
| void close() throws IOException { |
| lock.writeLock().lock(); |
| try { |
| checkState(!closed); |
| closed = true; |
| } finally { |
| lock.writeLock().unlock(); |
| } |
| |
| try { |
| reader.close(); |
| } finally { |
| directory.close(); |
| } |
| } |
| |
| } |