/*
* 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.
*/
using System;
using IndexReader = Lucene.Net.Index.IndexReader;
using Term = Lucene.Net.Index.Term;
using Directory = Lucene.Net.Store.Directory;
using FSDirectory = Lucene.Net.Store.FSDirectory;
namespace Lucene.Net.Demo
{
/// Deletes documents from an index that do not contain a term.
public class DeleteFiles
{
private DeleteFiles()
{
} // singleton
/// Deletes documents from an index that do not contain a term.
[STAThread]
public static void Main(System.String[] args)
{
System.String usage = typeof(DeleteFiles) + " ";
if (args.Length == 0)
{
System.Console.Error.WriteLine("Usage: " + usage);
System.Environment.Exit(1);
}
try
{
Directory directory = FSDirectory.GetDirectory("index", false);
IndexReader reader = IndexReader.Open(directory);
Term term = new Term("path", args[0]);
int deleted = reader.DeleteDocuments(term);
System.Console.Out.WriteLine("deleted " + deleted + " documents containing " + term);
// one can also delete documents by their internal id:
/*
for (int i = 0; i < reader.maxDoc(); i++) {
System.out.println("Deleting document with id " + i);
reader.delete(i);
}*/
reader.Close();
directory.Close();
}
catch (System.Exception e)
{
System.Console.Out.WriteLine(" caught a " + e.GetType() + "\n with message: " + e.Message);
}
}
}
}