package org.apache.lucene.misc;

/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001,2004 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" and
 *    "Apache Lucene" must not be used to endorse or promote products
 *    derived from this software without prior written permission. For
 *    written permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    "Apache Lucene", nor may "Apache" appear in their name, without
 *    prior written permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.analysis.SimpleAnalyzer;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;

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.
 * @author Erik Hatcher
 * @version $Id$
 */
public class IndexMergeTool {
  public static void main(String[] args) throws IOException {
    File mergedIndex = new File(args[0]);

    IndexWriter writer = new IndexWriter(mergedIndex, new  SimpleAnalyzer(), true);

    Directory[] indexes = new Directory[args.length - 1];
    for (int i = 1; i < args.length; i++) {
      indexes[i  - 1] = FSDirectory.getDirectory(args[i], false);
    }

    writer.addIndexes(indexes);

    writer.optimize();
    writer.close();
  }
}

@@ -3186,16 +3186,167 @@
 ption %7B%0A
+    if (args.length %3C 3) %7B%0A      System.err.println(%22Usage: IndexMergeTool %3CmergedIndex%3E %3Cindex1%3E %3Cindex2%3E %5Bindex3%5D ...%22);%0A      System.exit(1);%0A    %7D%0A
     File
@@ -3648,36 +3648,115 @@
     
-writer.addIndexes(indexes);%0A
+System.out.println(%22Merging...%22);%0A    writer.addIndexes(indexes);%0A%0A    System.out.println(%22Optimizing...%22);
 %0A   
@@ -3795,14 +3795,47 @@
 lose();%0A
+    System.out.println(%22Done.%22);%0A
   %7D%0A%7D%0A

print usage if called with wrong number of arguments; be more verbose