public static void AddUpdateLuceneIndex(IEnumerable <LucenePageModel> PageData)
{
// init lucene
var analyzer = new StandardAnalyzer(_version);
using (var writer = new IndexWriter(_directory, analyzer, IndexWriter.MaxFieldLength.UNLIMITED))
{
// add data to lucene search index (replaces older entry if any)
foreach (LucenePageModel data in PageData)
{
_addToLuceneIndex(data, writer);
}
// close handles
analyzer.Close();
writer.Optimize();
writer.Commit();
writer.Dispose();
}
}
public ActionResult Cut(string str)
{
//一元分词-简单分词
StringBuilder sb = new StringBuilder();
StandardAnalyzer analyzer = new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_30);
TokenStream tokenStream = analyzer.TokenStream("", new StringReader(str));
ITermAttribute item = tokenStream.GetAttribute <ITermAttribute>();
while (tokenStream.IncrementToken())
{
sb.Append(item.Term + "|");
}
tokenStream.CloneAttributes();
analyzer.Close();
return(Content(sb.ToString()));
}
public static bool ClearLuceneIndex()
{
try
{
var analyzer = new StandardAnalyzer(Version.LUCENE_30);
using (var writer = new IndexWriter(_directory, analyzer, true, IndexWriter.MaxFieldLength.UNLIMITED))
{
// remove older index entries
writer.DeleteAll();
// close handles
analyzer.Close();
writer.Dispose();
}
}
catch (Exception)
{
return(false);
}
return(true);
}
public static bool Clear()
{
try
{
var _analyzer = new StandardAnalyzer(CurrentVersion);
using (var _writer = new IndexWriter(Directory, _analyzer, true, IndexWriter.MaxFieldLength.UNLIMITED))
{
// remove older index entries
_writer.DeleteAll();
// close handles
_analyzer.Close();
_writer.Dispose();
}
}
catch (Exception)
{
return(false);
}
return(true);
}
public static IEnumerable <HashTag> Search(string searchQuery,
string searchField, int hitsLimit = 1000)
{
if (String.IsNullOrEmpty(searchQuery) || String.IsNullOrEmpty(searchField))
{
return(new List <HashTag>());
}
IEnumerable <HashTag> results = null;
using (var searcher = new IndexSearcher(HashtagDirectory, false))
{
var analyzer = new StandardAnalyzer(Version.LUCENE_30);
var parser = new QueryParser(Version.LUCENE_30, searchField, analyzer);
var query = ParseQuery(searchQuery, parser);
var hits = searcher.Search(query, hitsLimit).ScoreDocs;
results = MapLuceneToDataList(hits, searcher);
analyzer.Close();
}
return(results);
}
public bool ClearLuceneIndex()
{
try
{
var analyzer = new StandardAnalyzer(Version.LUCENE_30);
using (var writer = new IndexWriter(Directory, analyzer, true, IndexWriter.MaxFieldLength.UNLIMITED))
{
writer.DeleteAll();
analyzer.Close();
writer.Dispose();
}
}
catch (Exception)
{
return(false);
}
return(true);
}
/// <summary>
/// Performs the search.
/// </summary>
/// <param name="luceneVersion">The lucene version.</param>
/// <param name="fsDirectory">The fs directory.</param>
/// <param name="hitLimit">The hit limit.</param>
/// <param name="searchQuery">The search query.</param>
/// <returns></returns>
private SearchResult <TSearchData> PerformSearch(Version luceneVersion, FSDirectory fsDirectory, int hitLimit, string searchQuery)
{
var result = new SearchResult <TSearchData>();
string[] fields = null;
if (string.IsNullOrEmpty(searchQuery.Replace("*", string.Empty).Replace("?", string.Empty)))
{
return(result);
}
fields = searchQuery.Contains(':') ? this.allSearchFields.ToArray() : this.defaultSearchFields.ToArray();
using (var indexSearcher = new IndexSearcher(fsDirectory, false))
{
var analyzer = new StandardAnalyzer(luceneVersion);
var queryParser = new MultiFieldQueryParser(luceneVersion, fields, analyzer)
{
DefaultOperator = QueryParser.Operator.AND
};
var query = this.searchQueryParser.ParseQuery(searchQuery, queryParser);
var topFieldCollector = TopFieldCollector.Create(new Sort(), hitLimit, false, true, true, true);
indexSearcher.Search(query, topFieldCollector);
var topDocs = topFieldCollector.TopDocs();
result.TotalHitCount = topDocs.TotalHits;
var hits = topDocs.ScoreDocs;
result.Results = this.MapDocumentsToSearchData(hits, indexSearcher);
analyzer.Close();
return(result);
}
}
private static IEnumerable <SampleData> _search
(string searchQuery, string searchField = "")
{
// validation
if (string.IsNullOrEmpty(searchQuery.Replace("*", "").Replace("?", "")))
{
return(new List <SampleData>());
}
// set up lucene searcher
using (var searcher = new IndexSearcher(_directory, false))
{
var hits_limit = 1000;
var analyzer = new StandardAnalyzer(Version.LUCENE_30);
// search by single field
//if (!string.IsNullOrEmpty(searchField))
//{
// var parser = new QueryParser(Version.LUCENE_30, searchField, analyzer);
// var query = parseQuery(searchQuery, parser);
// var hits = searcher.Search(query, null, hits_limit, Sort.RELEVANCE).ScoreDocs;
// var results = _mapLuceneToDataList(hits, searcher);
// analyzer.Close();
// searcher.Dispose();
// return results;
//}
// search by multiple fields(ordered by RELEVANCE)
//else
//{
var parser = new MultiFieldQueryParser
(Version.LUCENE_30, new[] { "FileName", "Title", "Content" }, analyzer);
var query = parseQuery(searchQuery, parser);
var hits = searcher.Search
(query, null, hits_limit, Sort.RELEVANCE).ScoreDocs;
var results = _mapLuceneToDataList(hits, searcher);
analyzer.Close();
searcher.Dispose();
return(results);
//}
}
}
/// <summary>
/// Adds or updates the search index
/// </summary>
/// <param name="messageList">The message list.</param>
public void AddUpdateSearchIndex(IEnumerable <SearchMessage> messageList)
{
var analyzer = new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_30);
var indexWriter = new IndexWriter(
Directory,
analyzer,
!IndexReader.IndexExists(Directory),
new IndexWriter.MaxFieldLength(IndexWriter.DEFAULT_MAX_FIELD_LENGTH));
indexWriter.SetMergeScheduler(new ConcurrentMergeScheduler());
indexWriter.SetMaxBufferedDocs(YafContext.Current.Get <YafBoardSettings>().ReturnSearchMax);
foreach (var message in messageList)
{
AddToSearchIndex(message, indexWriter);
}
analyzer.Close();
indexWriter.Dispose();
}
/// <summary>
/// Clears the index record with the given id.
/// </summary>
/// <remarks>Call this method whenever a record is deleted from the repository.</remarks>
/// <param name="recordId">Record id.</param>
public void ClearLuceneIndexRecord(Int32 recordId)
{
// Initialize Lucene
var analyzer = new StandardAnalyzer(Version.LUCENE_30);
using (var writer = new IndexWriter(Directory, analyzer, IndexWriter.MaxFieldLength.UNLIMITED))
{
// remove older index entry
var searchQuery = new TermQuery(new Term(nameof(SampleData.Id), recordId.ToString()));
try
{
writer.DeleteDocuments(searchQuery);
}
finally
{
// close handles
writer.Dispose();
analyzer.Close();
}
}
}
public void RebuildRamIndex(IEnumerable <SampleDataFileRow> dataToIndex)
{
var analyzer = new StandardAnalyzer(Version.LUCENE_30, ListStopWords);
using (var writer = new IndexWriter(_RAMdirectory, analyzer, false, IndexWriter.MaxFieldLength.UNLIMITED))
{
writer.DeleteAll();
writer.Commit();
foreach (var sampleDataFileRow in dataToIndex)
{
Document doc = new Document();
doc.Add(new Field("LineNumber", sampleDataFileRow.LineNumber.ToString(), Field.Store.YES, Field.Index.NOT_ANALYZED, Field.TermVector.NO));
doc.Add(new Field("LineText", sampleDataFileRow.LineText, Field.Store.YES, Field.Index.ANALYZED));
writer.AddDocument(doc);
}
analyzer.Close();
writer.Optimize();
//writer.Flush(true, false, true);
writer.Dispose();
}
}
public bool BuildIndex(SearchContext context, IList <DocumentData> documentDataList)
{
_searchContext = context;
try
{
if (System.IO.Directory.Exists(context.IndexPath))
{
System.IO.Directory.Delete(context.IndexPath, true);
}
var indexDirectory = FSDirectory.Open(context.IndexPath);
var analyser = new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_30);
var indexWriter = new IndexWriter(indexDirectory, analyser, IndexWriter.MaxFieldLength.UNLIMITED);
var indexSearcher = new IndexSearcher(indexDirectory, true);
foreach (var doc in documentDataList)
{
Document document = new Document();
Field nameField = new Field("name", doc.FileName, Field.Store.YES, Field.Index.ANALYZED);
Field pathField = new Field("path", doc.FilePath, Field.Store.YES, Field.Index.NOT_ANALYZED);
document.Add(nameField);
document.Add(pathField);
indexWriter.AddDocument(document);
Trace.WriteLine(string.Format("Added {0} to Index", doc.FilePath));
//System.IO.Path.GetDirectoryName(doc.FilePath), doc.FileName));
}
indexWriter.Optimize();
analyser.Close();
indexWriter.Dispose();
indexDirectory.Dispose();
}
catch (Exception ex)
{
return(false);
}
return(true);
}
public static void CreateIndexFromDb()
{
using (LuceneDirectory)
{
//var analyzer = new RuAnalyzer();
var analyzer = new StandardAnalyzer(Version);
using (var writer = new IndexWriter(LuceneDirectory, analyzer, true, IndexWriter.MaxFieldLength.UNLIMITED))
{
writer.SetRAMBufferSizeMB(20);
// add data to lucene search index (replaces older entries if any)
using (var db = new SQLDataAccess())
{
//Replace by Evgeni to increase serach abilities
// db.cmd.CommandText = "select productId,ArtNo, Name from Catalog.Product";
//db.cmd.CommandText = "select productId, (Name + ' ' + ArtNo + ' ' + Description) as Name from Catalog.Product where Enabled = 1";
db.cmd.CommandText = "select productId,ArtNo, (Name + ' ' + ISNULL(ManufactureArtNo,'') + ' ' + ISNULL(EAN,'') + ' '+ Replace(ArtNo,'.','') +' '+ + Replace(ArtNo,'-','') + ' ' + SUBSTRING ( artno ,1 , 1 )+'-' +SUBSTRING ( artno ,2 , 3 ) + '-' + SUBSTRING ( artno ,5 , 3 ) +'-' +SUBSTRING ( artno ,8 , 3 ) + ' ' ) as Name from Catalog.Product where Enabled = 1";
db.cmd.CommandType = CommandType.Text;
db.cnOpen();
using (var reader = db.cmd.ExecuteReader())
{
while (reader.Read())
{
Thread.Sleep(0);
AddToLuceneIndex(new SampleData(SQLDataHelper.GetInt(reader["productId"]), SQLDataHelper.GetString(reader, "ArtNo"), SQLDataHelper.GetString(reader["Name"])), writer);
}
}
db.cnClose();
}
// close handles
analyzer.Close();
writer.Optimize();
writer.Close();
writer.Dispose();
}
LuceneDirectory.Close();
}
}
public bool ClearLuceneIndex()
{
try
{
var analyzer = new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_30);
lock (_lock)
{
using (var writer = new IndexWriter(_directory, analyzer, true, IndexWriter.MaxFieldLength.UNLIMITED))
{
writer.SetMergeScheduler(new SerialMergeScheduler());
writer.DeleteAll();
analyzer.Close();
}
}
}
catch (Exception)
{
return(false);
}
return(true);
}
public bool ClearLuceneIndex()
{
try
{
var analyzer = new StandardAnalyzer(Version.LUCENE_30);
using (var writer = new IndexWriter(Directory, analyzer, true, IndexWriter.MaxFieldLength.UNLIMITED))
{
// remove older index entries
writer.DeleteAll();
// close handles
analyzer.Close();
writer.Dispose();
}
}
catch (Exception ex)
{
Logger.ErrorFormat(" ClearLuceneIndex - error [{0}] - \r\n {1} \r\n\r\n", ex.Message, ex.StackTrace);
return(false);
}
return(true);
}
private static PagedList <LuceneSearchModel> _search(string searchQuery, int pageIndex, int pageSize)
{
// validation
if (string.IsNullOrEmpty(searchQuery.Replace("*", "").Replace("?", "")))
{
return(null);
}
// set up lucene searcher
using (var searcher = new IndexSearcher(_directory, false))
{
const int hitsLimit = 1000;
var analyzer = new StandardAnalyzer(Version.LUCENE_30);
var parser = new MultiFieldQueryParser(Version.LUCENE_30, new[] { AppConstants.LucId, AppConstants.LucTopicName, AppConstants.LucPostContent }, analyzer);
var query = parseQuery(searchQuery, parser);
searcher.SetDefaultFieldSortScoring(true, true);
var hits = searcher.Search(query, null, hitsLimit, Sort.INDEXORDER).ScoreDocs;
var results = _mapLuceneToDataList(hits, searcher, pageIndex, pageSize);
analyzer.Close();
searcher.Dispose();
return(results);
}
}
public static List <Advertisement> GetByIndexRecords(string name1, int one, string name2, int two)
{
// set up lucene searcher
using (var searcher = new IndexSearcher(_directory, false)) {
var hits_limit = 1000;
var analyzer = new StandardAnalyzer(Version.LUCENE_30);
// search by single field
var parser = new MultiFieldQueryParser
(Version.LUCENE_30, new[] { name1, name2 }, analyzer);
Query query1 = new TermQuery(new Term(name1, one.ToString()));
Query query2 = new TermQuery(new Term(name2, two.ToString()));
BooleanQuery booleanQuery = new BooleanQuery();
booleanQuery.Add(query1, Occur.MUST);
booleanQuery.Add(query2, Occur.MUST);
var hits = searcher.Search(booleanQuery, hits_limit).ScoreDocs;
var results = _mapLuceneToDataList(hits, searcher);
analyzer.Close();
searcher.Dispose();
return(results);
}
}
public bool AddDocumentToIndex(string fullFilePath, SearchContext context)
{
using (var indexDirectory = FSDirectory.Open(context.IndexPath))
{
using (var analyser = new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_30))
{
using (var indexWriter = new IndexWriter(indexDirectory, analyser, false, IndexWriter.MaxFieldLength.UNLIMITED))
{
Document document = new Document {
};
DocumentData doc = new DocumentData
{
FileName = Path.GetFileNameWithoutExtension(fullFilePath),
Extention = Path.GetExtension(fullFilePath),
FilePath = fullFilePath
};
Field nameField = new Field("name", doc.FileName, Field.Store.YES, Field.Index.ANALYZED);
Field extField = new Field("ext", doc.Extention, Field.Store.YES, Field.Index.NOT_ANALYZED);
Field pathField = new Field("path", doc.FilePath, Field.Store.YES, Field.Index.NOT_ANALYZED);
document.Add(nameField);
document.Add(extField);
document.Add(pathField);
indexWriter?.AddDocument(document);
indexWriter?.Optimize();
DocumentAddedEvent?.Invoke(this, new EventDataArgs {
Data = string.Format("File Created: {0}", doc.FilePath)
});
}
analyser.Close();
}
}
return(true);
}
public bool ClearLuceneIndexRecord(int record_id)
{
var analyzer = new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_29);
using (var writer = new IndexWriter(_directory, analyzer, IndexWriter.MaxFieldLength.UNLIMITED))
{
try
{
var searchQuery = new TermQuery(new Term("Id", record_id.ToString()));
writer.DeleteDocuments(searchQuery);
return(true);
}
catch (Exception)
{
return(false);
}
finally
{
analyzer.Close();
writer.Close();
writer.Dispose();
}
}
}
private static IEnumerable <Building> _search(string searchQuery, string searchField = "")
{
// validation
if (string.IsNullOrEmpty(searchQuery.Replace("*", "").Replace("?", "")))
{
return(new List <Building>());
}
// set up lucene searcher
using (var searcher = new IndexSearcher(_directory, true))
{
var hits_limit = 1000;
var analyzer = new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_30);
var parser = new QueryParser(Lucene.Net.Util.Version.LUCENE_30, " Street", analyzer);
var query = parseQuery(searchQuery, parser);
var hits = searcher.Search(query, hits_limit).ScoreDocs;
var results = _mapLuceneToDataList(hits, searcher);
analyzer.Close();
searcher.Dispose();
return(results);
}
}
public bool BuildIndex(SearchContext context)
{
_searchContext = context;
try
{
if (System.IO.Directory.Exists(context.IndexPath))
{
System.IO.Directory.Delete(context.IndexPath, true);
}
using (var indexDirectory = FSDirectory.Open(context.IndexPath))
{
using (var analyser = new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_30))
{
using (var indexWriter = new IndexWriter(indexDirectory, analyser, IndexWriter.MaxFieldLength.UNLIMITED))
{
//yield return call
foreach (var doc in _fileScanner.GetFileListWithFullPath(context.ScanPath))
{
if (doc == null)
{
continue;
}
Document document = new Document();
Field nameField = new Field("name", doc.FileName, Field.Store.YES, Field.Index.ANALYZED);
Field extField = new Field("ext", doc.Extention, Field.Store.YES, Field.Index.NOT_ANALYZED);
Field pathField = new Field("path", doc.FilePath, Field.Store.YES, Field.Index.NOT_ANALYZED);
document.Add(nameField);
document.Add(pathField);
document.Add(extField);
indexWriter?.AddDocument(document);
//Trace.WriteLine(string.Format("Added {0} to Index", doc.FileName));
//currStatus = string.Format("Added {0} to Index", doc.FilePath);
DocumentAddedEvent?.Invoke(this, new EventDataArgs {
Data = string.Format("Indexing: {0}", doc.FilePath)
});
}
indexWriter.Optimize();
}
analyser.Close();
}
}
DocumentAddedEvent?.Invoke(this, new EventDataArgs {
Data = "Indexing Complete !!"
});
}
catch (Exception ex)
{
DocumentAddedEvent?.Invoke(this, new EventDataArgs {
Data = string.Format("Error: {0}", ex.Message)
});
return(false);
}
return(true);
}
/*
* 分词函数
* @srcdata:待分词的文本
* 返回值:按照学长格式定义的分词结果的string表示
* 即{<分词1>}{<分词2>}...{<分词n>}
*/
// 这个函数是核心
// 输入是待分词的内容
// 输出是分词结果
// 分词结果的格式是{<word>}
// 这个格式是学长定义的，我们为了不破坏既定的接口，沿用了这个格式
// 这个函数的工作原理主要是调用了Lucene.Net.Analysis和Lucene.China的接口
// 调用这两个接口的配置工作很简单：1.在引用中加入dll文件 2.在可执行程序的目录下放置一个data文件夹，文件夹内有两个文件，分别是sDict和sNoise
// 存放词库和噪声
/*private bool isChineseWord(string word)
* {
* if (word == null)
* {
* return false;
* }
* for (int i = 0; i < word.Length; i++)
* {
* char chr = word[i];
* if (!(chr >= 0x4E00 && chr <= 0x9FFF))
* {
* return false;
* }
* }
*
* return true;
* }*/
/*private string word_seg(string srcdata)
* {
* //StringBuilder sb = new StringBuilder();
* //sb.Remove(0, sb.Length);
* string t1 = "";
* ChineseAnalyzer analyzer = new Lucene.China.ChineseAnalyzer();
* //string FilePath = @"C:\Users\梁亦清\Documents\Visual Studio 2013\Projects\中科院分词简例\1.htm";
*
* StringReader sr = new StringReader(srcdata);
* //Console.WriteLine(sr.ToString());
* //Environment.Exit(0);
* TokenStream stream = analyzer.TokenStream("", sr);
*
* //long begin = System.DateTime.Now.Ticks;
* Lucene.Net.Analysis.Token t = stream.Next();
* while (t != null)
* {
* /*
* t1 = t.ToString(); //显示格式： (关键词,0,2) ，需要处理
* t1 = t1.Replace("(", "");
* char[] separator = { ',' };
* t1 = t1.Split(separator)[0];
* if (isChineseWord(t1))
* {
* sb.Append("{<" + t1 + ">}");
* }
* t = stream.Next();
* }
* //return sb.ToString()
* }*/
// 这个函数是学长代码的对外接口，我们沿用了这个接口，但使用的分词方法不是朴素贝叶斯
/*public string DoWordSegment(string strIn)
* {
* return word_seg(strIn);
*
* }*/
public List <string> cutwords(string words, string analyzer = "Lucene.China.ChineseAnalyzer")
{
List <string> results = new List <string>();
switch (analyzer)
{
case "Lucene.Net.Analysis.SimpleAnalyzer":
SimpleAnalyzer analyzerInstance0 = new SimpleAnalyzer();
TokenStream ts0 = analyzerInstance0.ReusableTokenStream("", new StringReader(words));
Lucene.Net.Analysis.Token token0;
while ((token0 = ts0.Next()) != null)
{
results.Add(token0.TermText());
}
ts0.Close();
analyzerInstance0.Close();
break;
case "Lucene.Net.Analysis.KeywordAnalyzer":
KeywordAnalyzer analyzerInstance1 = new KeywordAnalyzer();
TokenStream ts1 = analyzerInstance1.ReusableTokenStream("", new StringReader(words));
Lucene.Net.Analysis.Token token1;
while ((token1 = ts1.Next()) != null)
{
results.Add(token1.TermText());
}
ts1.Close();
analyzerInstance1.Close();
break;
case "Lucene.Net.Analysis.StopAnalyzer":
StopAnalyzer analyzerInstance2 = new StopAnalyzer();
TokenStream ts2 = analyzerInstance2.ReusableTokenStream("", new StringReader(words));
Lucene.Net.Analysis.Token token2;
while ((token2 = ts2.Next()) != null)
{
results.Add(token2.TermText());
}
ts2.Close();
analyzerInstance2.Close();
break;
case "Lucene.Net.Analysis.WhitespaceAnalyzer":
WhitespaceAnalyzer analyzerInstance3 = new WhitespaceAnalyzer();
TokenStream ts3 = analyzerInstance3.ReusableTokenStream("", new StringReader(words));
Lucene.Net.Analysis.Token token3;
while ((token3 = ts3.Next()) != null)
{
results.Add(token3.TermText());
}
ts3.Close();
analyzerInstance3.Close();
break;
case "Lucene.Net.Analysis.PanGu.PanGuAnalyzer":
PanGu.Segment.Init(@"G:\CProjects\Pipeline\pipeline\Pipeline\bin\Release\PanGu.xml");
PanGuAnalyzer analyzerInstance4 = new PanGuAnalyzer();
TokenStream ts4 = analyzerInstance4.TokenStream("", new StringReader(words));
Lucene.Net.Analysis.Token token4;
while ((token4 = ts4.Next()) != null)
{
results.Add(token4.TermText());
}
ts4.Close();
analyzerInstance4.Close();
break;
case "Lucene.Net.Analysis.Standard.StandardAnalyzer":
StandardAnalyzer analyzerInstance5 = new StandardAnalyzer();
TokenStream ts5 = analyzerInstance5.ReusableTokenStream("", new StringReader(words));
Lucene.Net.Analysis.Token token5;
while ((token5 = ts5.Next()) != null)
{
results.Add(token5.TermText());
}
ts5.Close();
analyzerInstance5.Close();
break;
case "Lucene.China.ChineseAnalyzer":
default:
ChineseAnalyzer analyzerInstance6 = new ChineseAnalyzer();
TokenStream ts6 = analyzerInstance6.ReusableTokenStream("", new StringReader(words));
Lucene.Net.Analysis.Token token6;
while ((token6 = ts6.Next()) != null)
{
results.Add(token6.TermText());
}
ts6.Close();
analyzerInstance6.Close();
break;
}
return(results);
}
public void IndexSelectedReviews(ISet <string> reviewIds)
{
StandardAnalyzer analyzer = null;
IndexWriter writer = null;
try
{
analyzer = new StandardAnalyzer(Version.LUCENE_30);
writer = new IndexWriter(_dirLocation, analyzer,
IndexWriter.MaxFieldLength.UNLIMITED);
var tableManager = new TableManager();
var reviewList = tableManager.GetReviewsById(GenerateListFromSet(reviewIds));
foreach (var id in reviewIds)
{
if (reviewList.ContainsKey(id))
{
Trace.TraceInformation("Adding {0} to the index", id);
var reviewEntity = reviewList[id];
// delete entry if exists
var searchQuery = new TermQuery(new Term(Constants.Constants.Field_Id, id));
writer.DeleteDocuments(searchQuery);
// add to index again
var doc = new Document();
doc.Add(new Field(Constants.Constants.Field_Id, reviewEntity.ReviewId, Field.Store.YES,
Field.Index.NOT_ANALYZED));
doc.Add(new Field(Constants.Constants.Field_EntityType, Constants.Constants.Field_EntityType_Reviews, Field.Store.YES,
Field.Index.NOT_ANALYZED));
doc.Add(new Field(Constants.Constants.Field_ReviewerName, reviewEntity.ReviewerName, Field.Store.YES,
Field.Index.ANALYZED));
doc.Add(new Field(Constants.Constants.Field_EntityType_ReviewText, reviewEntity.Review, Field.Store.YES, Field.Index.ANALYZED));
writer.AddDocument(doc);
}
else
{
Trace.TraceWarning("movie {0} not present in db", id);
}
}
}
catch (Exception err)
{
Trace.TraceError("Failed to build index {0}", err);
}
finally
{
if (analyzer != null)
{
analyzer.Close();
}
if (writer != null)
{
writer.Dispose();
}
}
}
private void MakeSearch(SearchModel model)
{
string query = model.SearchText + "~";
DateTime datastart = DateTime.Now;
Directory directory = FSDirectory.Open(new System.IO.DirectoryInfo(Server.MapPath("~/Data/Index")));
IndexSearcher searcher = new IndexSearcher(directory, true);
Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_29);
List <string> strings = new List <string>();
foreach (var checkBox in model.CheckBoxes)
{
if (checkBox.IsChecked)
{
if (checkBox.SearchType == SearchType.Courses)
{
//make filtration here...
strings.Add("Name");
strings.Add("Content");
}
if (checkBox.SearchType == SearchType.Topics)
{
//make filtration here...
strings.Add("Topic");
}
if (checkBox.SearchType == SearchType.Users)
{
//make filtration here...
strings.Add("User");
}
if (checkBox.SearchType == SearchType.Disciplines)
{
//make filtration here...
strings.Add("Discipline");
}
//make filtration here...
}
}
MultiFieldQueryParser queryParser = new MultiFieldQueryParser(
Version.LUCENE_29,
strings.ToArray(),
//new String[] { "Name", "Content", "Discipline", "User", "Group", "Topic" },
analyzer
);
ScoreDoc[] scoreDocs = searcher.Search(queryParser.Parse(query), 100).scoreDocs;
Hits hit = searcher.Search(queryParser.Parse(query));
int total = hit.Length();
List <Discipline> disciplines123 = _CurriculmService.GetDisciplines(_UserService.GetCurrentUser()).ToList();
List <Course> courses123 = _CourseService.GetCourses(_UserService.GetCurrentUser()).ToList();
List <TopicDescription> topics123 = _CurriculmService.GetTopicsAvailableForUser(_UserService.GetCurrentUser()).ToList();
//List<Discipline> topics123 = _CurriculmService.GetDisciplinesWithTopicsOwnedByUser(_UserService.GetCurrentUser()).ToList();
//foreach(Discipline curr in disciplines123){
// topics123.InsertRange(topics123.Count - 1, _CurriculmService.GetTopicsByDisciplineId(curr.Id));
//}
List <ISearchResult> results = new List <ISearchResult>();
Stopwatch sw = new Stopwatch();
sw.Start();
foreach (ScoreDoc doc in scoreDocs)
{
ISearchResult result;
Document document = searcher.Doc(doc.doc);
String type = document.Get("Type").ToLower();
switch (type)
{
case "node":
Node node = new Node();
node.Id = Convert.ToInt32(document.Get("NodeID"));
node.Name = document.Get("Name");
node.CourseId = Convert.ToInt32(document.Get("NodeCourseID"));
node.IsFolder = Convert.ToBoolean(document.Get("isFolder"));
result = new NodeResult(node, _CourseService.GetCourse(node.CourseId).Name, document.Get("Content"), _CourseService.GetCourse(node.CourseId).Updated.ToString());
results.Add(result);
break;
case "course":
Course course = new Course();
course.Id = Convert.ToInt32(document.Get("CourseID"));
course.Name = document.Get("Name");
foreach (Course cour in courses123)
{
if (cour.Id == course.Id)
{
result = new CourseResult(course, _CourseService.GetCourse(course.Id).Updated.ToString(), _CourseService.GetCourse(course.Id).Owner);
results.Add(result);
break;
}
}
break;
case "discipline":
Discipline discipline = new Discipline();
discipline.Id = Convert.ToInt32(document.Get("DisciplineID"));
discipline.Name = document.Get("Discipline");
discipline.Owner = document.Get("Owner");
string str = _CurriculmService.GetDiscipline(discipline.Id).Owner;
foreach (Discipline curr in disciplines123)
{
if (curr.Owner.Equals(discipline.Owner))
{
result = new DisciplineResult(discipline, _CurriculmService.GetDiscipline(discipline.Id).Updated.ToString());
results.Add(result);
break;
}
}
break;
case "user":
User user = new User();
user.Id = Guid.Parse(document.Get("UserID"));
user.Name = document.Get("User");
//user.Roles
/*user.RoleId = Convert.ToInt32(document.Get("RoleId"));*/
result = new UserResult(user);
results.Add(result);
break;
case "group":
Group group = new Group();
group.Id = int.Parse(document.Get("GroupID"));
group.Name = document.Get("Group");
result = new GroupResult(group);
results.Add(result);
break;
case "topic":
Topic topic = new Topic();
topic.Id = Convert.ToInt32(document.Get("TopicID"));
topic.Name = document.Get("Topic");
if (document.Get("CourseRef") == "null")
{
topic.CourseRef = null;
}
else
{
topic.CourseRef = Convert.ToInt32(document.Get("CourseRef"));
}
foreach (TopicDescription themdesc in topics123)
{
if (themdesc.Topic.Id == topic.Id)
{
result = new TopicResult(topic, _CourseService.GetCourse(topic.CourseRef.Value).Name);
results.Add(result);
break;
}
}
break;
default:
throw new Exception("Unknown result type");
}
}
sw.Stop();
DateTime dataend = DateTime.Now;
analyzer.Close();
searcher.Close();
directory.Close();
//ViewData["SearchString"] = query;
//ViewData["score"] = Math.Abs(dataend.Millisecond - datastart.Millisecond); //sw.ElapsedMilliseconds.ToString();
//ViewData["total"] = total;
model.SearchResult = results;
model.Total = total;
model.Score = Math.Abs(dataend.Millisecond - datastart.Millisecond);
}
private static IEnumerable <LuceneSearchData> _search
(string searchQuery, string searchField = "", string role = null)
{
// validation
if (string.IsNullOrEmpty(searchQuery.Replace("*", "").Replace("?", "")))
{
return(new List <LuceneSearchData>());
}
// set up lucene searcher
using (var searcher = new IndexSearcher(_directory, false))
{
var hits_limit = 1000;
var analyzer = new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_30);
// search by single field
if (!string.IsNullOrEmpty(searchField))
{
var parser = new QueryParser(Lucene.Net.Util.Version.LUCENE_30, searchField, analyzer);
var query = parseQuery(searchQuery, parser);
var hits = searcher.Search(query, hits_limit).ScoreDocs;
var results = _mapLuceneToDataList(hits, searcher);
analyzer.Close();
searcher.Dispose();
return(results);
}
// search by multiple fields (ordered by RELEVANCE)
else
{
var parser = new MultiFieldQueryParser
(Lucene.Net.Util.Version.LUCENE_30, new[] {
"Name",
"name_en",
"name_zh",
"name_cn",
"Description",
"desc_en",
"desc_zh",
"desc_cn",
}, analyzer);
var query = parseQuery(searchQuery, parser);
BooleanQuery bq = new BooleanQuery();
bq.Add(query, Occur.MUST);
if (role == "trading")
{
var role_parser = new MultiFieldQueryParser
(Lucene.Net.Util.Version.LUCENE_30, new[] {
"is_trading",
"is_member",
"is_visitor",
}, analyzer);
role_parser.DefaultOperator = QueryParser.AND_OPERATOR;
var role_query = parseQuery("1", role_parser);
bq.Add(role_query, Occur.MUST);
}
else if (role == "member")
{
var role_parser = new MultiFieldQueryParser
(Lucene.Net.Util.Version.LUCENE_30, new[] {
"is_member",
"is_visitor",
}, analyzer);
role_parser.DefaultOperator = QueryParser.AND_OPERATOR;
var role_query = parseQuery("1", role_parser);
bq.Add(role_query, Occur.MUST);
}
else
{
var role_parser = new MultiFieldQueryParser
(Lucene.Net.Util.Version.LUCENE_30, new[] {
"is_visitor",
}, analyzer);
role_parser.DefaultOperator = QueryParser.AND_OPERATOR;
var role_query = parseQuery("1", role_parser);
bq.Add(role_query, Occur.MUST);
}
var scorer = new QueryScorer(bq);
var hits = searcher.Search(bq, null, hits_limit, Sort.RELEVANCE).ScoreDocs;
IFormatter formatter = new SimpleHTMLFormatter("<span style=\"font-weight:bold; background-color:yellow;\">", "</span>");
SimpleFragmenter fragmenter = new SimpleFragmenter(1000);
Highlighter highlighter = new Highlighter(formatter, scorer);
highlighter.TextFragmenter = fragmenter;
var results = _mapLuceneToDataList(hits, searcher, highlighter, analyzer);
analyzer.Close();
searcher.Dispose();
return(results);
}
}
}
/// <summary>
/// Searches the index.
/// </summary>
/// <param name="totalHits">The total hits.</param>
/// <param name="forumId">The forum identifier.</param>
/// <param name="userId">The user identifier.</param>
/// <param name="searchQuery">The search query.</param>
/// <param name="searchField">The search field.</param>
/// <param name="pageIndex">Index of the page.</param>
/// <param name="pageSize">Size of the page.</param>
/// <returns>
/// Returns the Search results
/// </returns>
private List <SearchMessage> SearchIndex(
out int totalHits,
int forumId,
int userId,
string searchQuery,
string searchField = "",
int pageIndex = 1,
int pageSize = 1000)
{
if (searchQuery.Replace("*", string.Empty).Replace("?", string.Empty).IsNotSet())
{
totalHits = 0;
return(new List <SearchMessage>());
}
// Insert forum access here
var userAccessList = this.GetRepository <vaccess>().Get(v => v.UserID == userId);
// filter forum
if (forumId > 0)
{
userAccessList = userAccessList.FindAll(v => v.ForumID == forumId);
}
var searcher = this.GetSearcher();
var hitsLimit = this.Get <YafBoardSettings>().ReturnSearchMax;
// 0 => Lucene error;
if (hitsLimit == 0)
{
hitsLimit = pageSize;
}
var analyzer = new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_30);
var formatter = new SimpleHTMLFormatter("<mark>", "</mark>");
var fragmenter = new SimpleFragmenter(hitsLimit);
QueryScorer scorer;
// search by single field
if (searchField.IsSet())
{
var parser = new QueryParser(Lucene.Net.Util.Version.LUCENE_30, searchField, analyzer);
var query = ParseQuery(searchQuery, parser);
scorer = new QueryScorer(query);
var hits = searcher.Search(query, hitsLimit).ScoreDocs;
totalHits = hits.Length;
var highlighter = new Highlighter(formatter, scorer)
{
TextFragmenter = fragmenter
};
var results = this.MapSearchToDataList(
highlighter,
analyzer,
searcher,
hits,
pageIndex,
pageSize,
userAccessList);
analyzer.Close();
searcher.Dispose();
return(results);
}
else
{
var parser = new MultiFieldQueryParser(
Lucene.Net.Util.Version.LUCENE_30,
new[] { "Message", "Topic", "Author" },
analyzer);
var query = ParseQuery(searchQuery, parser);
scorer = new QueryScorer(query);
// sort by date
var sort = new Sort(new SortField("Posted", SortField.STRING, true));
var hits = searcher.Search(query, null, hitsLimit, sort).ScoreDocs;
totalHits = hits.Length;
var highlighter = new Highlighter(formatter, scorer)
{
TextFragmenter = fragmenter
};
var results = this.MapSearchToDataList(
highlighter,
analyzer,
searcher,
hits,
pageIndex,
pageSize,
userAccessList);
analyzer.Close();
searcher.Dispose();
return(results);
}
}
public ActionResult Search(String query)
{
if (query == "")
{
return(RedirectToAction("Index"));
}
query = query + "~";
DateTime datastart = DateTime.Now;
Directory directory = FSDirectory.Open(new System.IO.DirectoryInfo(Server.MapPath("~/Data/Index")));
IndexSearcher searcher = new IndexSearcher(directory, true);
Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_29);
MultiFieldQueryParser queryParser = new MultiFieldQueryParser(
Version.LUCENE_29,
new String[] { "Name", "Content", "Curriculum", "User", "Group", "Theme" },
analyzer
);
ScoreDoc[] scoreDocs = searcher.Search(queryParser.Parse(query), 100).scoreDocs;
Hits hit = searcher.Search(queryParser.Parse(query));
int total = hit.Length();
List <ISearchResult> results = new List <ISearchResult>();
Stopwatch sw = new Stopwatch();
sw.Start();
foreach (ScoreDoc doc in scoreDocs)
{
ISearchResult result;
Document document = searcher.Doc(doc.doc);
String type = document.Get("Type").ToLower();
switch (type)
{
case "node":
Node node = new Node();
node.Id = Convert.ToInt32(document.Get("ID"));
node.Name = document.Get("Name");
node.CourseId = Convert.ToInt32(document.Get("CourseID"));
node.IsFolder = Convert.ToBoolean(document.Get("isFolder"));
result = new NodeResult(node, _CourseService.GetCourse(node.CourseId).Name, document.Get("Content"), _CourseService.GetCourse(node.CourseId).Updated.ToString());
break;
case "course":
Course course = new Course();
course.Id = Convert.ToInt32(document.Get("ID"));
course.Name = document.Get("Name");
result = new CourseResult(course, _CourseService.GetCourse(course.Id).Updated.ToString(), _CourseService.GetCourse(course.Id).Owner);
break;
case "curriculum":
Curriculum curriculum = new Curriculum();
curriculum.Id = Convert.ToInt32(document.Get("ID"));
curriculum.Name = document.Get("Curriculum");
result = new CurriculumResult(curriculum, _CurriculmService.GetCurriculum(curriculum.Id).Updated.ToString());
break;
case "user":
User user = new User();
user.Id = Guid.Parse(document.Get("ID"));
user.Name = document.Get("User");
user.RoleId = Convert.ToInt32(document.Get("RoleId"));
result = new UserResult(user, _UserService.GetRole(user.RoleId).ToString());
break;
case "group":
Group group = new Group();
group.Id = int.Parse(document.Get("ID"));
group.Name = document.Get("Group");
result = new GroupResult(group);
break;
case "theme":
Theme theme = new Theme();
theme.Id = Convert.ToInt32(document.Get("ID"));
theme.Name = document.Get("Theme");
theme.CourseRef = Convert.ToInt32(document.Get("CourseRef"));
result = new ThemeResult(theme, _CourseService.GetCourse(theme.CourseRef).Name);
break;
default:
throw new Exception("Unknown result type");
}
results.Add(result);
}
sw.Stop();
DateTime dataend = DateTime.Now;
analyzer.Close();
searcher.Close();
directory.Close();
ViewData["SearchString"] = query;
ViewData["score"] = Math.Abs(dataend.Millisecond - datastart.Millisecond); //sw.ElapsedMilliseconds.ToString();
ViewData["total"] = total;
return(View(results));
}
public IPagedList <ClassifiedAdList> GetClassifiedAdListSearchEngine(int stringIdCategory, string stringIdSubCategory, string searchString = null, int?pageNumber = 1, string searchCategory = "ALL",
string searchOnlyOption = "All Ads", string minPrice = null, string maxPrice = null, string minMile = null, string maxMile = null, string modelName = null, string minYear = null, string maxYear = null,
string modEngineSize = null, string modelMake = null, string modelBodyType = null, string modelDrivetrain = null, string modelTransmission = null, string modelCondition = null, string modelColour = null,
string modelJobType = null, string modelSalaryInfo = null, string modelBedrooms = null, string modelBathrooms = null, string modelFurnished = null, string CountryId = null, string RegionId = null,
string minSize = null, string maxSize = null, string modelBreed = null, string modelSpecies = null, string minAge = null, string maxAge = null, string ageType = null)
{
// LUCENE
// validation
// Setup query
BooleanQuery bq = new BooleanQuery();
var sortBy = new Sort();
sortBy.SetSort(new SortField("EditTimeStampTicks", SortField.LONG, true), SortField.FIELD_SCORE);
var analyzer = new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_30);
// Get only Open ads
bq.Add(new TermQuery(new Lucene.Net.Index.Term("Status", "0")), Occur.MUST);
if (!String.IsNullOrEmpty(searchString))
{
bq.Add(LuceneSearch.parseQuery(searchString, new MultiFieldQueryParser
(Lucene.Net.Util.Version.LUCENE_30, new[] {
"Title", "HtmlFreeDescription", "Country", "Region",
"Make", "Model", "Mileage", "Year", "Engine Size", "Condition", "Colour", "Fuel Type", "Transmission", "Drivetrain", "Body Type",
"Company Name", "Job Type",
"Species", "Breed", "Gender", "Age", "Pet's Name"
}, analyzer))
, Occur.MUST);
sortBy = Sort.RELEVANCE;
}
if (searchOnlyOption.Equals("All Ads"))
{
if (stringIdCategory != -100)
{
if (searchCategory.Equals("ALL"))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("CategoryId", stringIdCategory.ToString())), Occur.MUST);
}
else
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("CategoryId", stringIdCategory.ToString())), Occur.MUST);
bq.Add(new TermQuery(new Lucene.Net.Index.Term("AdType", searchCategory)), Occur.MUST);
}
}
else if (!String.IsNullOrEmpty(stringIdSubCategory))
{
if (searchCategory.Equals("ALL"))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("SubCategoryStringId", stringIdSubCategory)), Occur.MUST);
}
else
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("SubCategoryStringId", stringIdSubCategory)), Occur.MUST);
bq.Add(new TermQuery(new Lucene.Net.Index.Term("AdType", searchCategory)), Occur.MUST);
}
}
else
{
if (!searchCategory.Equals("ALL"))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("AdType", searchCategory)), Occur.MUST);
}
}
}
else if (searchOnlyOption.Equals("Top Ads"))
{
if (stringIdCategory != -100)
{
if (searchCategory.Equals("ALL"))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("CategoryId", stringIdCategory.ToString())), Occur.MUST);
bq.Add(new TermQuery(new Lucene.Net.Index.Term("TopAdStatus", "true")), Occur.MUST);
}
else
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("CategoryId", stringIdCategory.ToString())), Occur.MUST);
bq.Add(new TermQuery(new Lucene.Net.Index.Term("TopAdStatus", "true")), Occur.MUST);
bq.Add(new TermQuery(new Lucene.Net.Index.Term("AdType", searchCategory)), Occur.MUST);
}
}
else if (!String.IsNullOrEmpty(stringIdSubCategory))
{
if (searchCategory.Equals("ALL"))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("SubCategoryStringId", stringIdSubCategory)), Occur.MUST);
bq.Add(new TermQuery(new Lucene.Net.Index.Term("TopAdStatus", "true")), Occur.MUST);
}
else
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("SubCategoryStringId", stringIdSubCategory)), Occur.MUST);
bq.Add(new TermQuery(new Lucene.Net.Index.Term("TopAdStatus", "true")), Occur.MUST);
bq.Add(new TermQuery(new Lucene.Net.Index.Term("AdType", searchCategory)), Occur.MUST);
}
}
else
{
if (!searchCategory.Equals("ALL"))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("TopAdStatus", "true")), Occur.MUST);
bq.Add(new TermQuery(new Lucene.Net.Index.Term("AdType", searchCategory)), Occur.MUST);
}
}
}
else if (searchOnlyOption.Equals("Urgent Ads"))
{
if (stringIdCategory != -100)
{
if (searchCategory.Equals("ALL"))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("CategoryId", stringIdCategory.ToString())), Occur.MUST);
bq.Add(new TermQuery(new Lucene.Net.Index.Term("UrgentAdStatus", "true")), Occur.MUST);
}
else
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("CategoryId", stringIdCategory.ToString())), Occur.MUST);
bq.Add(new TermQuery(new Lucene.Net.Index.Term("UrgentAdStatus", "true")), Occur.MUST);
bq.Add(new TermQuery(new Lucene.Net.Index.Term("AdType", searchCategory)), Occur.MUST);
}
}
else if (!String.IsNullOrEmpty(stringIdSubCategory))
{
if (searchCategory.Equals("ALL"))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("SubCategoryStringId", stringIdSubCategory)), Occur.MUST);
bq.Add(new TermQuery(new Lucene.Net.Index.Term("UrgentAdStatus", "true")), Occur.MUST);
}
else
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("SubCategoryStringId", stringIdSubCategory)), Occur.MUST);
bq.Add(new TermQuery(new Lucene.Net.Index.Term("UrgentAdStatus", "true")), Occur.MUST);
bq.Add(new TermQuery(new Lucene.Net.Index.Term("AdType", searchCategory)), Occur.MUST);
}
}
else
{
if (!searchCategory.Equals("ALL"))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("UrgentAdStatus", "true")), Occur.MUST);
bq.Add(new TermQuery(new Lucene.Net.Index.Term("AdType", searchCategory)), Occur.MUST);
}
}
}
//
// FILTERS
//max /min price
if (minPrice != null)
{
if (minPrice != "" && maxPrice == "")
{
bq.Add(NumericRangeQuery.NewIntRange("Price", Int32.Parse(minPrice.Replace(",", "")), Int32.Parse(minPrice.Replace(",", "")), true, true), Occur.MUST);
}
}
if (maxPrice != null)
{
if (maxPrice != "" && minPrice == "")
{
bq.Add(NumericRangeQuery.NewIntRange("Price", Int32.Parse(maxPrice.Replace(",", "")), Int32.Parse(maxPrice.Replace(",", "")), true, true), Occur.MUST);
}
}
if (maxPrice != null && minPrice != null)
{
if (maxPrice != "" && minPrice != "")
{
bq.Add(NumericRangeQuery.NewIntRange("Price", Int32.Parse(minPrice.Replace(",", "")), Int32.Parse(maxPrice.Replace(",", "")), true, true), Occur.MUST);
}
}
//location
if (!String.IsNullOrEmpty(CountryId))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("CountryId", CountryId)), Occur.MUST);
}
if (!String.IsNullOrEmpty(RegionId))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("RegionId", RegionId)), Occur.MUST);
}
//model make
if (!String.IsNullOrEmpty(modelMake))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("Make", modelMake)), Occur.MUST);
}
//max / min mileage
if (minMile != null)
{
if (minMile != "" && maxMile == "")
{
bq.Add(NumericRangeQuery.NewIntRange("Mileage", Int32.Parse(minMile.Replace(",", "")), Int32.Parse(minMile.Replace(",", "")), true, true), Occur.MUST);
}
}
if (maxMile != null)
{
if (maxMile != "" && minMile == "")
{
bq.Add(NumericRangeQuery.NewIntRange("Mileage", Int32.Parse(maxMile.Replace(",", "")), Int32.Parse(maxMile.Replace(",", "")), true, true), Occur.MUST);
}
}
if (maxMile != null && minMile != null)
{
if (maxMile != "" && minMile != "")
{
bq.Add(NumericRangeQuery.NewIntRange("Mileage", Int32.Parse(minMile.Replace(",", "")), Int32.Parse(maxMile.Replace(",", "")), true, true), Occur.MUST);
}
}
//model name
if (!String.IsNullOrEmpty(modelName))
{
bq.Add(new FuzzyQuery(new Lucene.Net.Index.Term("Model", modelName)), Occur.MUST);
}
//max / min year
if (minYear != null && maxYear == null)
{
if (minYear != "" && maxYear == "")
{
bq.Add(NumericRangeQuery.NewIntRange("Year", Int32.Parse(minYear), Int32.Parse(minYear), true, true), Occur.MUST);
}
}
if (maxYear != null && minYear == null)
{
if (maxYear != "" && minYear == "")
{
bq.Add(NumericRangeQuery.NewIntRange("Year", Int32.Parse(maxYear), Int32.Parse(maxYear), true, true), Occur.MUST);
}
}
if (maxYear != null && minYear != null)
{
if (maxYear != "" && minYear != "")
{
bq.Add(NumericRangeQuery.NewIntRange("Year", Int32.Parse(minYear), Int32.Parse(maxYear), true, true), Occur.MUST);
}
}
//model body type
if (!String.IsNullOrEmpty(modelBodyType))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("Body Type", modelBodyType)), Occur.MUST);
}
//model drivetrain
if (!String.IsNullOrEmpty(modelDrivetrain))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("Drivetrain", modelDrivetrain)), Occur.MUST);
}
//model transmission
if (!String.IsNullOrEmpty(modelTransmission))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("Transmission", modelTransmission)), Occur.MUST);
}
//model condition
if (!String.IsNullOrEmpty(modelCondition))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("Condition", modelCondition)), Occur.MUST);
}
//model colour
if (!String.IsNullOrEmpty(modelColour))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("Colour", modelColour)), Occur.MUST);
}
//model engine size
if (!String.IsNullOrEmpty(modEngineSize))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("Engine Size", modEngineSize)), Occur.MUST);
}
//------JOBS---------
//model job type
if (!String.IsNullOrEmpty(modelJobType))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("Job Type", modelJobType)), Occur.MUST);
}
//model salary type
if (!String.IsNullOrEmpty(modelSalaryInfo))
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("Salary Type", modelSalaryInfo)), Occur.MUST);
}
//-----REAL ESTATE----
//model min/max size
if (minSize != null)
{
if (minSize != "" && maxSize == "")
{
bq.Add(NumericRangeQuery.NewIntRange("Size", Int32.Parse(minSize), Int32.Parse(minSize), true, true), Occur.MUST);
}
}
if (maxSize != null)
{
if (maxSize != "" && minSize == "")
{
bq.Add(NumericRangeQuery.NewIntRange("Size", Int32.Parse(maxSize), Int32.Parse(maxSize), true, true), Occur.MUST);
}
}
if (maxSize != null && minSize != null)
{
if (maxSize != "" & minSize != "")
{
bq.Add(NumericRangeQuery.NewIntRange("Size", Int32.Parse(minSize), Int32.Parse(maxSize), true, true), Occur.MUST);
}
}
//model bedrooms
if (modelBathrooms != null)
{
if (modelBedrooms != "")
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("Bedrooms", modelBedrooms)), Occur.MUST);
}
}
//model bathrooms
if (modelBathrooms != null)
{
if (modelBathrooms != "")
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("Bathrooms", modelBathrooms)), Occur.MUST);
}
}
//model furnished
if (modelFurnished != null)
{
if (modelFurnished != "")
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("Furnished", modelFurnished)), Occur.MUST);
}
}
//-----Pets--------
///////////////////
if (modelSpecies != null)
{
if (modelSpecies != "")
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("Species", modelSpecies)), Occur.MUST);
}
}
if (modelBreed != null)
{
if (modelBreed != "")
{
bq.Add(new TermQuery(new Lucene.Net.Index.Term("Breed", modelBreed)), Occur.MUST);
}
}
//model min/max age
if (minAge != null && maxAge == null)
{
if (minAge != "" && maxAge == "")
{
bq.Add(new TermRangeQuery("Age", minAge, minAge, true, true), Occur.MUST);
}
}
if (maxAge != null && minAge == null)
{
if (maxAge != "" && minAge == "")
{
bq.Add(new TermRangeQuery("Age", maxAge, maxAge, true, true), Occur.MUST);
}
}
if (maxAge != null && minAge != null)
{
if (maxAge != "" && minAge != "")
{
bq.Add(new TermRangeQuery("Age", minAge, maxAge, true, true), Occur.MUST);
}
}
// set up lucene searcher
using (var searcher = new IndexSearcher(LuceneSearch._getDir, false))
{
var hits_limit = 1000;
var hits = searcher.Search(bq, null, hits_limit, sortBy).ScoreDocs;
var results = LuceneSearch._mapLuceneToDataList(hits, searcher);
analyzer.Close();
searcher.Dispose();
var temppaged = new PagedList <ClassifiedAdList>(results, pageNumber.Value, RecordsPerPage.recordsPerPage);
return(temppaged);
}
}
public void IndexSelectedMovies(ISet <string> movieIds)
{
StandardAnalyzer analyzer = null;
IndexWriter writer = null;
try
{
analyzer = new StandardAnalyzer(Version.LUCENE_30);
writer = new IndexWriter(_dirLocation, analyzer,
IndexWriter.MaxFieldLength.UNLIMITED);
var tableManager = new TableManager();
var movieList = tableManager.GetMoviesByid(GenerateListFromSet(movieIds));
foreach (var id in movieIds)
{
if (movieList.ContainsKey(id))
{
Trace.TraceInformation("Adding {0} to the index", id);
var movieEntity = movieList[id];
// delete entry if exists
var searchQuery = new TermQuery(new Term(Constants.Constants.Field_Id, id));
writer.DeleteDocuments(searchQuery);
// add to index again
var doc = new Document();
doc.Add(new Field(Constants.Constants.Field_Id, movieEntity.MovieId, Field.Store.YES,
Field.Index.NOT_ANALYZED));
doc.Add(new Field(Constants.Constants.Field_Name, movieEntity.Name, Field.Store.YES,
Field.Index.NOT_ANALYZED));
doc.Add(new Field(Constants.Constants.Field_AltNames, movieEntity.AltNames, Field.Store.NO, Field.Index.ANALYZED));
doc.Add(new Field(Constants.Constants.Field_Actors, movieEntity.Posters, Field.Store.NO,
Field.Index.ANALYZED));
doc.Add(new Field(Constants.Constants.Field_Directors, movieEntity.Ratings, Field.Store.YES,
Field.Index.ANALYZED));
doc.Add(new Field(Constants.Constants.Field_MusicDirectors, movieEntity.Casts,
Field.Store.YES, Field.Index.ANALYZED));
doc.Add(new Field(Constants.Constants.Field_Name, movieEntity.Name, Field.Store.YES,
Field.Index.ANALYZED));
doc.Add(new Field(Constants.Constants.Field_Producers, movieEntity.Synopsis, Field.Store.YES,
Field.Index.ANALYZED));
doc.Add(new Field(Constants.Constants.Field_MovieSynopsis, movieEntity.Synopsis, Field.Store.YES,
Field.Index.ANALYZED));
writer.AddDocument(doc);
}
else
{
Trace.TraceWarning("movie {0} not present in db", id);
}
}
}
catch (Exception err)
{
Trace.TraceError("Failed to build index {0}", err);
}
finally
{
if (analyzer != null)
{
analyzer.Close();
}
if (writer != null)
{
writer.Dispose();
}
}
}
private IEnumerable <Product> MainSearch(string searchTerms, string searchField = "")
{
// validation
if (string.IsNullOrEmpty(searchTerms.Replace("*", "").Replace("?", "")))
{
return(null);
}
// '*' or '?' not allowed as first character in WildcardQuery
var firstCharacter = searchTerms.Substring(0, 1);
if (firstCharacter == "*" || firstCharacter == "?")
{
searchTerms = searchTerms.Substring(1, searchTerms.Length - 1);
}
// set up lucene searcher
using (var searcher = new IndexSearcher(Directory, false))
{
var analyzer = new StandardAnalyzer(Version.LUCENE_30);
// search by single field
if (!string.IsNullOrEmpty(searchField))
{
var mainQuery = new BooleanQuery();
var languageParser = new QueryParser(Version.LUCENE_30, "Language", analyzer);
var languageQuery = languageParser.Parse(Thread.CurrentThread.CurrentCulture.ThreeLetterISOLanguageName);
mainQuery.Add(new BooleanClause(languageQuery, Occur.MUST));
var searchParser = new QueryParser(Version.LUCENE_30, searchField, analyzer);
var searchQuery = searchParser.Parse(searchTerms);
mainQuery.Add(new BooleanClause(searchQuery, Occur.MUST));
var hits = searcher.Search(mainQuery, MaxNoOfHits).ScoreDocs;
var results = MapLuceneToDataList(hits, searcher);
analyzer.Close();
searcher.Dispose();
return(results);
}
// search by multiple fields (ordered by RELEVANCE)
else
{
var mainQuery = new BooleanQuery();
var languageParser = new QueryParser(Version.LUCENE_30, "Language", analyzer);
var languageQuery = languageParser.Parse(Thread.CurrentThread.CurrentCulture.ThreeLetterISOLanguageName);
mainQuery.Add(new BooleanClause(languageQuery, Occur.MUST));
var searchParser = new MultiFieldQueryParser(Version.LUCENE_30, new[] { "AllContent" }, analyzer);
var searchQuery = searchParser.Parse(searchTerms);
mainQuery.Add(new BooleanClause(searchQuery, Occur.MUST));
var hits = searcher.Search(mainQuery, null, MaxNoOfHits,
new Sort(new SortField(DefaultSortField, SortField.STRING))).ScoreDocs;
var results = MapLuceneToDataList(hits, searcher);
analyzer.Close();
searcher.Dispose();
return(results);
}
}
}
