| using Lucene.Net.Util; |
| using System; |
| using System.IO; |
| using System.Text; |
| using Console = Lucene.Net.Util.SystemConsole; |
| |
| namespace Lucene.Net.Search.Suggest.Fst |
| { |
| /* |
| * 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. |
| */ |
| |
| /// <summary> |
| /// Try to build a suggester from a large data set. The input is a simple text |
| /// file, newline-delimited. |
| /// </summary> |
| public static class LargeInputFST // LUCENENET specific: CA1052 Static holder types should be Static or NotInheritable |
| { |
| // LUCENENET specific - renaming from Main() because we must only have 1 entry point. |
| // Not sure why this utility is in a test project anyway - this seems like something that should |
| // be in Lucene.Net.Suggest so we can put it into the lucene-cli tool. |
| public static void Main2(string[] args) |
| { |
| FileInfo input = new FileInfo("/home/dweiss/tmp/shuffled.dict"); |
| |
| int buckets = 20; |
| int shareMaxTail = 10; |
| |
| ExternalRefSorter sorter = new ExternalRefSorter(new OfflineSorter()); |
| FSTCompletionBuilder builder = new FSTCompletionBuilder(buckets, sorter, shareMaxTail); |
| |
| TextReader reader = |
| new StreamReader( |
| new FileStream(input.FullName, FileMode.Open), Encoding.UTF8); |
| |
| BytesRef scratch = new BytesRef(); |
| string line; |
| int count = 0; |
| while ((line = reader.ReadLine()) != null) |
| { |
| scratch.CopyChars(line); |
| builder.Add(scratch, count % buckets); |
| if ((count++ % 100000) == 0) |
| { |
| Console.WriteLine("Line: " + count); |
| } |
| } |
| |
| Console.WriteLine("Building FSTCompletion."); |
| FSTCompletion completion = builder.Build(); |
| |
| FileInfo fstFile = new FileInfo("completion.fst"); |
| Console.WriteLine("Done. Writing automaton: " + fstFile.FullName); |
| completion.FST.Save(fstFile); |
| sorter.Dispose(); |
| } |
| } |
| } |