| /* |
| * 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.lucene.misc; |
| |
| import org.apache.lucene.index.IndexWriter; |
| import org.apache.lucene.index.IndexWriterConfig; |
| import org.apache.lucene.index.IndexWriterConfig.OpenMode; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.store.FSDirectory; |
| import org.apache.lucene.store.HardlinkCopyDirectoryWrapper; |
| import org.apache.lucene.util.SuppressForbidden; |
| |
| import java.io.IOException; |
| import java.nio.file.Paths; |
| |
| /** |
| * Merges indices specified on the command line into the index |
| * specified as the first command line argument. |
| */ |
| @SuppressForbidden(reason = "System.out required: command line tool") |
| public class IndexMergeTool { |
| |
| public static void main(String[] args) throws IOException { |
| if (args.length < 3) { |
| System.err.println("Usage: IndexMergeTool <mergedIndex> <index1> <index2> [index3] ..."); |
| System.exit(1); |
| } |
| |
| // Try to use hardlinks to source segments, if possible. |
| Directory mergedIndex = new HardlinkCopyDirectoryWrapper(FSDirectory.open(Paths.get(args[0]))); |
| |
| IndexWriter writer = new IndexWriter(mergedIndex, |
| new IndexWriterConfig(null).setOpenMode(OpenMode.CREATE)); |
| |
| Directory[] indexes = new Directory[args.length - 1]; |
| for (int i = 1; i < args.length; i++) { |
| indexes[i - 1] = FSDirectory.open(Paths.get(args[i])); |
| } |
| |
| System.out.println("Merging..."); |
| writer.addIndexes(indexes); |
| |
| System.out.println("Full merge..."); |
| writer.forceMerge(1); |
| writer.close(); |
| System.out.println("Done."); |
| } |
| |
| } |