public int Count(NuixLogRepo repo, string queryString)
{
// Lucene seems to be picky about lower case for some things?
Regex notFix = new Regex(@"\bnot\b", RegexOptions.Compiled);
queryString = notFix.Replace(queryString, "NOT");
// Blank query means all items
if (string.IsNullOrWhiteSpace(queryString))
{
return((int)repo.Database.TotalRecords);
}
else
{
luceneDirectory = FSDirectory.Open(IndexDirectory);
analyzer = getAnalyzer();
IndexSearcher searcher = new IndexSearcher(luceneDirectory);
Query query = parseQuery(queryString);
var hitsFound = searcher.Search(query, int.MaxValue);
int hitCount = hitsFound.TotalHits;
luceneDirectory.Dispose();
searcher.Dispose();
analyzer.Dispose();
return(hitCount);
}
}
public IList <long> Search(NuixLogRepo repo, string queryString)
{
// Lucene seems to be picky about lower case for some things?
Regex notFix = new Regex(@"\bnot\b", RegexOptions.Compiled);
queryString = notFix.Replace(queryString, "NOT");
// Emtpy query is all items, we return a special collection that pretends to be a full list of ID values
// but that is actually just based on the range of possible values.
if (string.IsNullOrWhiteSpace(queryString))
{
return(new AllEntriesIDList((int)repo.Database.TotalRecords));
}
else
{
luceneDirectory = FSDirectory.Open(IndexDirectory);
analyzer = getAnalyzer();
IndexSearcher searcher = new IndexSearcher(luceneDirectory);
Query query = parseQuery(queryString);
var hitsFound = searcher.Search(query, int.MaxValue);
long[] ids = new long[hitsFound.TotalHits];
for (int i = 0; i < hitsFound.TotalHits; i++)
{
Document doc = searcher.Doc(hitsFound.ScoreDocs[i].Doc);
ids[i] = long.Parse(doc.Get("id"));
}
luceneDirectory.Dispose();
searcher.Dispose();
analyzer.Dispose();
return(ids);
}
}
/// <summary>
/// Ends InWriteMode after closing Lucene index writing related objects.
/// </summary>
public void EndWrite()
{
writer.Flush(true, true, true);
writer.Optimize(true);
writer.Dispose();
luceneDirectory.Dispose();
analyzer.Dispose();
InWriteMode = false;
}
public static (Analyzer analyzer, IDisposable disposable) Create(
string defaultAnalyzer,
IDictionary <string, string> fieldAnalyzers)
{
var analyzers = new ConcurrentDictionary <string, Analyzer>();
Func <string, Analyzer> getAnalyzer = name => analyzers.GetOrAdd(name, n => s_analyzerMap[n]());
var perFieldAnalyzers = fieldAnalyzers.ToDictionary(x => x.Key, x => getAnalyzer(x.Value));
Analyzer analyzer = new PerFieldAnalyzerWrapper(
getAnalyzer(defaultAnalyzer),
perFieldAnalyzers);
IDisposable disposable = new DelegateDisposable(() =>
{
analyzer.Dispose();
foreach (var a in analyzers.Values)
{
a.Dispose();
}
});
return(analyzer, disposable);
}
