| using J2N.Text; |
| using Lucene.Net.Index; |
| using Lucene.Net.Search; |
| using System.Collections.Generic; |
| |
| namespace Lucene.Net.Benchmarks.ByTask.Feeds |
| { |
| /* |
| * 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> |
| /// Create sloppy phrase queries for performance test, in an index created using simple doc maker. |
| /// </summary> |
| public class SimpleSloppyPhraseQueryMaker : SimpleQueryMaker |
| { |
| /// <seealso cref="SimpleQueryMaker.PrepareQueries()"/> |
| protected override Query[] PrepareQueries() |
| { |
| // extract some 100 words from doc text to an array |
| string[] words; |
| List<string> w = new List<string>(); |
| StringTokenizer st = new StringTokenizer(SingleDocSource.DOC_TEXT); |
| while (st.MoveNext() && w.Count < 100) |
| { |
| w.Add(st.Current); |
| } |
| words = w.ToArray(); |
| |
| // create queries (that would find stuff) with varying slops |
| List<Query> queries = new List<Query>(); |
| for (int slop = 0; slop < 8; slop++) |
| { |
| for (int qlen = 2; qlen < 6; qlen++) |
| { |
| for (int wd = 0; wd < words.Length - qlen - slop; wd++) |
| { |
| // ordered |
| int remainedSlop = slop; |
| PhraseQuery q = new PhraseQuery(); |
| q.Slop = slop; |
| int wind = wd; |
| for (int i = 0; i < qlen; i++) |
| { |
| q.Add(new Term(DocMaker.BODY_FIELD, words[wind++])); |
| if (remainedSlop > 0) |
| { |
| remainedSlop--; |
| wind++; |
| } |
| } |
| queries.Add(q); |
| // reversed |
| remainedSlop = slop; |
| q = new PhraseQuery(); |
| q.Slop = slop + 2 * qlen; |
| wind = wd + qlen + remainedSlop - 1; |
| for (int i = 0; i < qlen; i++) |
| { |
| q.Add(new Term(DocMaker.BODY_FIELD, words[wind--])); |
| if (remainedSlop > 0) |
| { |
| remainedSlop--; |
| wind--; |
| } |
| } |
| queries.Add(q); |
| } |
| } |
| } |
| return queries.ToArray(); |
| } |
| } |
| } |