umbraco examine search results highlighting problem

Go to solution

Press Ctrl / CMD + C to copy this to your clipboard.

Copied to clipboard

Flag this post as spam?

This post will be reported to the moderators as potential spam to be looked at

Yuval Lombard 14 posts 44 karma points

Aug 07, 2014 @ 13:59
0

Umbraco Examine Search Results Highlighting Problem
Hi all,

I'm experiencing some troubles when trying to highlight search results of terms that are partial words

for example if my website contains the word "basis", and i will search for basis, it will find it and highlight it, but if i search for the word "basi" it will find the right results but the code below will not work this time, thus i will get no results:

Lucene.Net.Search.Query query = this.GetQueryParser(highlightField).Parse(luceneRawQuery);
```
        QueryScorer fragmentScorer = new QueryScorer(query.Rewrite(searcher.GetIndexReader()));

        Highlighter highlighter = new Highlighter(this.HighlightFormatter, fragmentScorer);

        Lucene.Net.Analysis.TokenStream tokenStream = this.HighlightAnalyzer.TokenStream(highlightField, new System.IO.StringReader(value));

        return highlighter.GetBestFragments(tokenStream, value, this.MaxNumHighlights, this.Separator); 

        return highlightField;
```
did anyone experienced it before?

Thanks a lot :)

Yuval
Copy Link
MK 429 posts 906 karma points

Aug 14, 2014 @ 10:11

100

Hi,

You can try the following:

public string GetHighlight(string value, string highlightField, Lucene.Net.Search.IndexSearcher searcher, string luceneRawQuery) {var finalQuery = new BooleanQuery(); string[] terms = luceneRawQuery.Split(new[] { " " }, StringSplitOptions.RemoveEmptyEntries); foreach (string term in terms)
{
var fuzzyQuery = new FuzzyQuery(new Lucene.Net.Index.Term(highlightField, term), MIN_SIMILARITY, PREFIX_LENGTH);
finalQuery.Add(new BooleanClause(fuzzyQuery, BooleanClause.Occur.MUST));
}
QueryScorer fragmentScorer = new QueryScorer(finalQuery.Rewrite(searcher.GetIndexReader()));
Lucene.Net.Highlight.Highlighter highlighter = new Highlighter(this.HighlightFormatter, fragmentScorer); Lucene.Net.Analysis.TokenStream tokenStream = this.HighlightAnalyzer.TokenStream(highlightField, new System.IO.StringReader(value)); string result = highlighter.GetBestFragments(tokenStream, value, this.MaxNumHighlights, this.Separator);
return result;

}

Regards,

Moshe

Copy Link
is working on a reply...

Please Sign in or register to post replies

Flag this post as spam?