public LuceneResults Search(LuceneSearchContext searchContext)
{
Requires.NotNull("LuceneQuery", searchContext.LuceneQuery);
Requires.NotNull("LuceneQuery.Query", searchContext.LuceneQuery.Query);
Requires.PropertyNotEqualTo("LuceneQuery", "PageSize", searchContext.LuceneQuery.PageSize, 0);
Requires.PropertyNotEqualTo("LuceneQuery", "PageIndex", searchContext.LuceneQuery.PageIndex, 0);
var luceneResults = new LuceneResults();
//TODO - Explore simple highlighter as it does not give partial words
var highlighter = FastHighlighter;
var fieldQuery = highlighter.GetFieldQuery(searchContext.LuceneQuery.Query);
var maxResults = searchContext.LuceneQuery.PageIndex * searchContext.LuceneQuery.PageSize;
var minResults = maxResults - searchContext.LuceneQuery.PageSize + 1;
var searcher = GetSearcher();
var searchSecurityTrimmer = new SearchSecurityTrimmer(new SearchSecurityTrimmerContext
{
Searcher = searcher,
SecurityChecker = searchContext.SecurityCheckerDelegate,
LuceneQuery = searchContext.LuceneQuery,
SearchQuery = searchContext.SearchQuery
});
searcher.Search(searchContext.LuceneQuery.Query, null, searchSecurityTrimmer);
luceneResults.TotalHits = searchSecurityTrimmer.TotalHits;
if (Logger.IsDebugEnabled)
{
var sb = GetSearcResultExplanation(searchContext.LuceneQuery, searchSecurityTrimmer.ScoreDocs, searcher);
Logger.Trace(sb);
}
//Page doesn't exist
if (luceneResults.TotalHits < minResults)
{
return(luceneResults);
}
luceneResults.Results = searchSecurityTrimmer.ScoreDocs.Select(match =>
new LuceneResult
{
Document = searcher.Doc(match.Doc),
Score = match.Score,
DisplayScore = GetDisplayScoreFromMatch(match.ToString()),
TitleSnippet = GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.TitleTag, searchContext.LuceneQuery.TitleSnippetLength),
BodySnippet = GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.BodyTag, searchContext.LuceneQuery.BodySnippetLength),
DescriptionSnippet = GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.DescriptionTag, searchContext.LuceneQuery.TitleSnippetLength),
TagSnippet = GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.Tag, searchContext.LuceneQuery.TitleSnippetLength),
AuthorSnippet = GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.AuthorNameTag, searchContext.LuceneQuery.TitleSnippetLength),
ContentSnippet = GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.ContentTag, searchContext.LuceneQuery.TitleSnippetLength)
}).ToList();
return(luceneResults);
}
public LuceneResults Search(LuceneSearchContext searchContext)
{
Requires.NotNull("LuceneQuery", searchContext.LuceneQuery);
Requires.NotNull("LuceneQuery.Query", searchContext.LuceneQuery.Query);
Requires.PropertyNotEqualTo("LuceneQuery", "PageSize", searchContext.LuceneQuery.PageSize, 0);
Requires.PropertyNotEqualTo("LuceneQuery", "PageIndex", searchContext.LuceneQuery.PageIndex, 0);
var luceneResults = new LuceneResults();
//validate whether index folder is exist and contains index files, otherwise return null.
if (!ValidateIndexFolder())
{
return luceneResults;
}
//TODO - Explore simple highlighter as it does not give partial words
var highlighter = FastHighlighter;
var fieldQuery = highlighter.GetFieldQuery(searchContext.LuceneQuery.Query);
var maxResults = searchContext.LuceneQuery.PageIndex * searchContext.LuceneQuery.PageSize;
var minResults = maxResults - searchContext.LuceneQuery.PageSize + 1;
var searcher = GetSearcher();
var searchSecurityTrimmer = new SearchSecurityTrimmer(new SearchSecurityTrimmerContext
{
Searcher = searcher,
SecurityChecker = searchContext.SecurityCheckerDelegate,
LuceneQuery = searchContext.LuceneQuery,
SearchQuery = searchContext.SearchQuery
});
searcher.Search(searchContext.LuceneQuery.Query, null, searchSecurityTrimmer);
luceneResults.TotalHits = searchSecurityTrimmer.TotalHits;
if (Logger.IsDebugEnabled)
{
var sb = GetSearcResultExplanation(searchContext.LuceneQuery, searchSecurityTrimmer.ScoreDocs, searcher);
Logger.Trace(sb);
}
//Page doesn't exist
if (luceneResults.TotalHits < minResults)
return luceneResults;
luceneResults.Results = searchSecurityTrimmer.ScoreDocs.Select(match =>
new LuceneResult
{
Document = searcher.Doc(match.Doc),
Score = match.Score,
DisplayScore = GetDisplayScoreFromMatch(match.ToString()),
TitleSnippet = GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.TitleTag, searchContext.LuceneQuery.TitleSnippetLength),
BodySnippet = GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.BodyTag, searchContext.LuceneQuery.BodySnippetLength),
DescriptionSnippet = GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.DescriptionTag, searchContext.LuceneQuery.TitleSnippetLength),
TagSnippet = GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.Tag, searchContext.LuceneQuery.TitleSnippetLength),
AuthorSnippet = GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.AuthorNameTag, searchContext.LuceneQuery.TitleSnippetLength),
ContentSnippet = GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.ContentTag, searchContext.LuceneQuery.TitleSnippetLength)
}).ToList();
return luceneResults;
}
public LuceneResults Search(LuceneSearchContext searchContext)
{
Requires.NotNull("LuceneQuery", searchContext.LuceneQuery);
Requires.NotNull("LuceneQuery.Query", searchContext.LuceneQuery.Query);
Requires.PropertyNotEqualTo("LuceneQuery", "PageSize", searchContext.LuceneQuery.PageSize, 0);
Requires.PropertyNotEqualTo("LuceneQuery", "PageIndex", searchContext.LuceneQuery.PageIndex, 0);
var luceneResults = new LuceneResults();
// validate whether index folder is exist and contains index files, otherwise return null.
if (!this.ValidateIndexFolder())
{
return(luceneResults);
}
var highlighter = this.FastHighlighter;
var fieldQuery = highlighter.GetFieldQuery(searchContext.LuceneQuery.Query);
var maxResults = searchContext.LuceneQuery.PageIndex * searchContext.LuceneQuery.PageSize;
var minResults = maxResults - searchContext.LuceneQuery.PageSize + 1;
for (var i = 0; i < this._searchRetryTimes; i++)
{
try
{
var searcher = this.GetSearcher();
var searchSecurityTrimmer = new SearchSecurityTrimmer(new SearchSecurityTrimmerContext
{
Searcher = searcher,
SecurityChecker = searchContext.SecurityCheckerDelegate,
LuceneQuery = searchContext.LuceneQuery,
SearchQuery = searchContext.SearchQuery,
});
searcher.Search(searchContext.LuceneQuery.Query, null, searchSecurityTrimmer);
luceneResults.TotalHits = searchSecurityTrimmer.TotalHits;
if (Logger.IsDebugEnabled)
{
var sb = GetSearcResultExplanation(searchContext.LuceneQuery, searchSecurityTrimmer.ScoreDocs, searcher);
Logger.Trace(sb);
}
// Page doesn't exist
if (luceneResults.TotalHits < minResults)
{
break;
}
luceneResults.Results = searchSecurityTrimmer.ScoreDocs.Select(match =>
new LuceneResult
{
Document = searcher.Doc(match.Doc),
Score = match.Score,
DisplayScore = this.GetDisplayScoreFromMatch(match.ToString()),
TitleSnippet = this.GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.TitleTag, searchContext.LuceneQuery.TitleSnippetLength),
BodySnippet = this.GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.BodyTag, searchContext.LuceneQuery.BodySnippetLength),
DescriptionSnippet = this.GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.DescriptionTag, searchContext.LuceneQuery.TitleSnippetLength),
TagSnippet = this.GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.Tag, searchContext.LuceneQuery.TitleSnippetLength),
AuthorSnippet = this.GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.AuthorNameTag, searchContext.LuceneQuery.TitleSnippetLength),
ContentSnippet = this.GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.ContentTag, searchContext.LuceneQuery.TitleSnippetLength),
}).ToList();
break;
}
catch (Exception ex) when(ex is IOException || ex is AlreadyClosedException)
{
this.DisposeReaders();
this.DisposeWriter(false);
if (i == this._searchRetryTimes - 1)
{
throw;
}
Logger.Error(ex);
Logger.Error($"Search Index Folder Is Not Available: {ex.Message}, Retry {i + 1} time(s).");
Thread.Sleep(100);
}
}
return(luceneResults);
}
public IEnumerable<LuceneResult> Search(
LuceneQuery luceneQuery, out int totalHits, SecurityCheckerDelegate securityChecker = null)
{
Requires.NotNull("LuceneQuery", luceneQuery);
Requires.NotNull("LuceneQuery.Query", luceneQuery.Query);
Requires.PropertyNotEqualTo("LuceneQuery", "PageSize", luceneQuery.PageSize, 0);
Requires.PropertyNotEqualTo("LuceneQuery", "PageIndex", luceneQuery.PageIndex, 0);
//TODO - Explore simple highlighter as it does not give partial words
var highlighter = FastHighlighter;
var fieldQuery = highlighter.GetFieldQuery(luceneQuery.Query);
var maxResults = luceneQuery.PageIndex*luceneQuery.PageSize;
var minResults = maxResults - luceneQuery.PageSize + 1;
var searcher = GetSearcher();
var topDocs = new SearchSecurityTrimmer(searcher, securityChecker, luceneQuery);
searcher.Search(luceneQuery.Query, null, topDocs);
totalHits = topDocs.TotalHits;
if (Logger.IsDebugEnabled)
{
var sb = GetSearcResultExplanation(luceneQuery, topDocs.ScoreDocs, searcher);
Logger.Debug(sb);
}
//Page doesn't exist
if (totalHits < minResults)
return new List<LuceneResult>();
return topDocs.ScoreDocs.Select(match =>
new LuceneResult
{
Document = searcher.Doc(match.Doc),
Score = match.Score,
DisplayScore = GetDisplayScoreFromMatch(match.ToString()),
TitleSnippet = GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.TitleTag, luceneQuery.TitleSnippetLength),
BodySnippet = GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.BodyTag, luceneQuery.BodySnippetLength),
DescriptionSnippet = GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.DescriptionTag, luceneQuery.TitleSnippetLength),
TagSnippet = GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.Tag, luceneQuery.TitleSnippetLength),
AuthorSnippet = GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.AuthorNameTag, luceneQuery.TitleSnippetLength),
ContentSnippet = GetHighlightedText(highlighter, fieldQuery, searcher, match, Constants.ContentTag, luceneQuery.TitleSnippetLength)
}).ToList();
}
