private static IList <int> SearchCore(SearchFilter searchFilter)
{
if (!Directory.Exists(LuceneCommon.IndexDirectory))
{
return(new int[0]);
}
SortField sortField = GetSortField(searchFilter);
int numRecords = Math.Min((1 + searchFilter.Skip) * searchFilter.Take, MaximumRecordsToReturn);
using (var directory = new LuceneFileSystem(LuceneCommon.IndexDirectory))
{
var searcher = new IndexSearcher(directory, readOnly: true);
var query = ParseQuery(searchFilter);
Filter filter = null;
if (!searchFilter.IncludePrerelease)
{
var isLatestStableQuery = new TermQuery(new Term("IsLatestStable", Boolean.TrueString));
filter = new QueryWrapperFilter(isLatestStableQuery);
}
var results = searcher.Search(query, filter: filter, n: numRecords, sort: new Sort(sortField));
var keys = results.scoreDocs.Skip(searchFilter.Skip)
.Select(c => ParseKey(searcher.Doc(c.doc).Get("Key")))
.ToList();
searcher.Close();
return(keys);
}
}
private static IList <int> SearchCore(SearchFilter searchFilter, out int totalHits)
{
if (!Directory.Exists(LuceneCommon.IndexDirectory))
{
totalHits = 0;
return(new int[0]);
}
SortField sortField = GetSortField(searchFilter);
int numRecords = searchFilter.Skip + searchFilter.Take;
using (var directory = new LuceneFileSystem(LuceneCommon.IndexDirectory))
{
var searcher = new IndexSearcher(directory, readOnly: true);
var query = ParseQuery(searchFilter);
var filterTerm = searchFilter.IncludePrerelease ? "IsLatest" : "IsLatestStable";
var termQuery = new TermQuery(new Term(filterTerm, Boolean.TrueString));
Filter filter = new QueryWrapperFilter(termQuery);
var results = searcher.Search(query, filter: filter, n: numRecords, sort: new Sort(sortField));
var keys = results.scoreDocs.Skip(searchFilter.Skip)
.Select(c => ParseKey(searcher.Doc(c.doc).Get("Key")))
.ToList();
totalHits = results.totalHits;
searcher.Close();
return(keys);
}
}
private static IList<int> SearchCore(SearchFilter searchFilter, out int totalHits)
{
if (!Directory.Exists(LuceneCommon.IndexDirectory))
{
totalHits = 0;
return new int[0];
}
SortField sortField = GetSortField(searchFilter);
int numRecords = searchFilter.Skip + searchFilter.Take;
using (var directory = new LuceneFileSystem(LuceneCommon.IndexDirectory))
{
var searcher = new IndexSearcher(directory, readOnly: true);
var query = ParseQuery(searchFilter);
var filterTerm = searchFilter.IncludePrerelease ? "IsLatest" : "IsLatestStable";
var termQuery = new TermQuery(new Term(filterTerm, Boolean.TrueString));
Filter filter = new QueryWrapperFilter(termQuery);
var results = searcher.Search(query, filter: filter, n: numRecords, sort: new Sort(sortField));
var keys = results.scoreDocs.Skip(searchFilter.Skip)
.Select(c => ParseKey(searcher.Doc(c.doc).Get("Key")))
.ToList();
totalHits = results.totalHits;
searcher.Close();
return keys;
}
}
protected internal virtual void WriteIndex(bool creatingIndex, List <PackageIndexEntity> packages)
{
using (var directory = new LuceneFileSystem(LuceneCommon.IndexDirectory))
{
var analyzer = new StandardAnalyzer(LuceneCommon.LuceneVersion);
var indexWriter = new IndexWriter(directory, analyzer, create: creatingIndex, mfl: IndexWriter.MaxFieldLength.UNLIMITED);
AddPackages(indexWriter, packages);
indexWriter.Close();
}
}
private static IEnumerable <int> SearchCore(string searchTerm)
{
if (!Directory.Exists(LuceneCommon.IndexDirectory))
{
return(Enumerable.Empty <int>());
}
using (var directory = new LuceneFileSystem(LuceneCommon.IndexDirectory))
{
var searcher = new IndexSearcher(directory, readOnly: true);
var query = ParseQuery(searchTerm);
var results = searcher.Search(query, filter: null, n: 1000, sort: new Sort(new[] { SortField.FIELD_SCORE, new SortField("DownloadCount", SortField.INT, reverse: true) }));
var keys = results.scoreDocs.Select(c => Int32.Parse(searcher.Doc(c.doc).Get("Key"), CultureInfo.InvariantCulture))
.ToList();
searcher.Close();
return(keys);
}
}
public void UpdateIndex()
{
DateTime? lastWriteTime = GetLastWriteTime();
bool creatingIndex = lastWriteTime == null;
using (var context = new EntitiesContext())
{
var packages = GetPackages(context, lastWriteTime);
if (packages.Any())
{
using (var directory = new LuceneFileSystem(LuceneCommon.IndexPath))
{
var analyzer = new StandardAnalyzer(LuceneCommon.LuceneVersion);
var indexWriter = new IndexWriter(directory, analyzer, create: creatingIndex, mfl: IndexWriter.MaxFieldLength.UNLIMITED);
AddPackages(indexWriter, packages);
indexWriter.Close();
}
}
}
UpdateLastWriteTime();
}
private static IEnumerable<int> SearchCore(string searchTerm)
{
if (!Directory.Exists(LuceneCommon.IndexPath))
{
return Enumerable.Empty<int>();
}
using (var directory = new LuceneFileSystem(LuceneCommon.IndexPath))
{
var searcher = new IndexSearcher(directory, readOnly: true);
var boosts = new Dictionary<string, float> { { "Id-Exact", 5.0f }, { "Id", 2.0f }, { "Title", 1.5f }, { "Description", 0.8f } };
var analyzer = new StandardAnalyzer(LuceneCommon.LuceneVersion);
var queryParser = new MultiFieldQueryParser(LuceneCommon.LuceneVersion, new[] { "Id-Exact", "Id", "Title", "Author", "Description", "Tags" }, analyzer, boosts);
var query = queryParser.Parse(searchTerm);
var results = searcher.Search(query, filter: null, n: 1000, sort: Sort.RELEVANCE);
var keys = results.scoreDocs.Select(c => Int32.Parse(searcher.Doc(c.doc).Get("Key"), CultureInfo.InvariantCulture))
.ToList();
searcher.Close();
return keys;
}
}
private static IEnumerable<int> SearchCore(string searchTerm)
{
if (!Directory.Exists(LuceneCommon.IndexDirectory))
{
return Enumerable.Empty<int>();
}
using (var directory = new LuceneFileSystem(LuceneCommon.IndexDirectory))
{
var searcher = new IndexSearcher(directory, readOnly: true);
var query = ParseQuery(searchTerm);
var results = searcher.Search(query, filter: null, n: 1000, sort: new Sort(new[] { SortField.FIELD_SCORE, new SortField("DownloadCount", SortField.INT, reverse: true) }));
var keys = results.scoreDocs.Select(c => Int32.Parse(searcher.Doc(c.doc).Get("Key"), CultureInfo.InvariantCulture))
.ToList();
searcher.Close();
return keys;
}
}
protected internal virtual void WriteIndex(bool creatingIndex, List<PackageIndexEntity> packages)
{
using (var directory = new LuceneFileSystem(LuceneCommon.IndexDirectory))
{
var analyzer = new StandardAnalyzer(LuceneCommon.LuceneVersion);
var indexWriter = new IndexWriter(directory, analyzer, create: creatingIndex, mfl: IndexWriter.MaxFieldLength.UNLIMITED);
AddPackages(indexWriter, packages);
indexWriter.Close();
}
}
private static IList<int> SearchCore(SearchFilter searchFilter)
{
if (!Directory.Exists(LuceneCommon.IndexDirectory))
{
return new int[0];
}
SortField sortField = GetSortField(searchFilter);
int numRecords = Math.Min((1 + searchFilter.Skip) * searchFilter.Take, MaximumRecordsToReturn);
using (var directory = new LuceneFileSystem(LuceneCommon.IndexDirectory))
{
var searcher = new IndexSearcher(directory, readOnly: true);
var query = ParseQuery(searchFilter);
Filter filter = null;
if (!searchFilter.IncludePrerelease)
{
var isLatestStableQuery = new TermQuery(new Term("IsLatestStable", Boolean.TrueString));
filter = new QueryWrapperFilter(isLatestStableQuery);
}
var results = searcher.Search(query, filter: filter, n: numRecords, sort: new Sort(sortField));
var keys = results.scoreDocs.Skip(searchFilter.Skip)
.Select(c => ParseKey(searcher.Doc(c.doc).Get("Key")))
.ToList();
searcher.Close();
return keys;
}
}
