--- /dev/null
+package org.apache.lucene.misc;
+
+/**
+ * Copyright 2005 The Apache Software Foundation
+ *
+ * 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.
+ */
+
+import org.apache.lucene.analysis.WhitespaceAnalyzer;
+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.util.Version;
+
+import java.io.File;
+import java.io.IOException;
+
+/**
+ * Merges indices specified on the command line into the index
+ * specified as the first command line argument.
+ */
+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);
+ }
+ FSDirectory mergedIndex = FSDirectory.open(new File(args[0]));
+
+ IndexWriter writer = new IndexWriter(mergedIndex, new IndexWriterConfig(
+ Version.LUCENE_CURRENT, new WhitespaceAnalyzer(Version.LUCENE_CURRENT))
+ .setOpenMode(OpenMode.CREATE));
+
+ Directory[] indexes = new Directory[args.length - 1];
+ for (int i = 1; i < args.length; i++) {
+ indexes[i - 1] = FSDirectory.open(new File(args[i]));
+ }
+
+ System.out.println("Merging...");
+ writer.addIndexes(indexes);
+
+ System.out.println("Full merge...");
+ writer.forceMerge(1);
+ writer.close();
+ System.out.println("Done.");
+ }
+}