private Document BuildDocument(string file)
{
if (string.IsNullOrEmpty(file))
{
return(null);
}
Document doc = new Document();
try
{
using (StreamReader sr = new StreamReader(file))
{
string fileDirectory = Path.GetDirectoryName(file);
doc.Add(new Field(Constants.IndexFields.Directory, fileDirectory, Field.Store.YES, Field.Index.NOT_ANALYZED));
doc.Add(new Field(Constants.IndexFields.Filename, Path.GetFileNameWithoutExtension(file), Field.Store.YES, Field.Index.NOT_ANALYZED));
doc.Add(new Field(Constants.IndexFields.Extension, Path.GetExtension(file), Field.Store.YES, Field.Index.NOT_ANALYZED));
doc.Add(new Field(Constants.IndexFields.LastModified, new FileInfo(file).LastWriteTime.Ticks.ToString(), Field.Store.YES, Field.Index.NOT_ANALYZED));
//TODO split content when too long ( > int.max )
string content = sr.ReadToEnd();
doc.Add(new Field(Constants.IndexFields.AnalizedDirectory, LuceneHelper.ExpandTokenBreak(fileDirectory.ToLower()), Field.Store.NO, Field.Index.ANALYZED));
doc.Add(new Field(Constants.IndexFields.Content, LuceneHelper.ExpandTokenBreak(content), Field.Store.NO, Field.Index.ANALYZED));
doc.Add(new Field(Constants.IndexFields.ContentCaseInsensitive, LuceneHelper.ExpandTokenBreak(content.ToLower()), Field.Store.NO, Field.Index.ANALYZED));
}
}
catch
{
return(null);
}
return(doc);
}
private IEnumerable <BooleanClause> BuildBlacklistQueryClauses(IEnumerable <string> blacklist)
{
if (blacklist == null || !blacklist.Any())
{
return(Enumerable.Empty <BooleanClause>());
}
List <BooleanClause> clauses = new List <BooleanClause>();
foreach (var cur in blacklist)
{
string adjustedString = LuceneHelper.ExpandTokenBreak(cur.ToLower()).TrimEnd(Path.DirectorySeparatorChar);
clauses.Add(new BooleanClause(BuildMatchWholeWordQuery(Constants.IndexFields.AnalizedDirectory, adjustedString), Occur.MUST_NOT));
}
return(clauses);
}
private Query BuildMatchAnywhereQuery(IndexReader indexReader, string searchString, bool matchCase, bool useWildcards)
{
if (useWildcards)
{
BooleanQuery resultQuery = new BooleanQuery();
var patternParts = GetWildcardPatternParts(searchString);
foreach (var part in patternParts)
{
resultQuery.Add(BuildMatchAnywhereQuery(indexReader, LuceneHelper.ExpandTokenBreak(part), matchCase), Occur.MUST);
}
return(resultQuery);
}
else
{
return(BuildMatchAnywhereQuery(indexReader, LuceneHelper.ExpandTokenBreak(searchString), matchCase));
}
}