| /* |
| * Copyright 2017 gitblit.com. |
| * |
| * 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. |
| */ |
| |
| package com.gitblit.utils; |
| |
| import java.io.File; |
| import java.nio.file.Path; |
| |
| /** |
| * @author Florian Zschocke |
| * |
| * @since 1.9.0 |
| */ |
| public class LuceneIndexStore |
| { |
| |
| public static final int LUCENE_CODEC_VERSION = 54; |
| |
| protected File indexFolder; |
| |
| /** |
| * Constructor for a base folder that contains the version specific index folders |
| * and an index version. |
| * |
| * @param luceneFolder |
| * Path to the base folder for the Lucene indices, i.e. the common "lucene" directory. |
| * @param indexVersion |
| * Version of the index definition |
| */ |
| public LuceneIndexStore(File luceneFolder, int indexVersion) |
| { |
| this.indexFolder = new File(luceneFolder, indexVersion + "_" + LUCENE_CODEC_VERSION); |
| } |
| |
| |
| |
| /** |
| * Create the Lucene index directory for this index version and Lucene codec version |
| */ |
| public void create() |
| { |
| if (! indexFolder.exists()) { |
| indexFolder.mkdirs(); |
| } |
| } |
| |
| |
| /** |
| * Delete the Lucene index directory for this index version and Lucene codec version |
| * |
| * @return True if the directory could successfully be deleted. |
| */ |
| public boolean delete() |
| { |
| if (indexFolder.exists()) { |
| return FileUtils.delete(indexFolder); |
| } |
| return true; |
| } |
| |
| |
| |
| /** |
| * @return The Path to the index folder |
| */ |
| public Path getPath() |
| { |
| return indexFolder.toPath(); |
| } |
| |
| |
| |
| /** |
| * Check if an index of the respective version, or compatible, already exists. |
| * |
| * @return True if an index exists, False otherwise |
| */ |
| public boolean hasIndex() |
| { |
| return indexFolder.exists() && |
| indexFolder.isDirectory() && |
| (indexFolder.list().length > 1); // Must have more than 'write.lock' |
| } |
| |
| } |