This answer was originally posted here: http://our.umbraco.org/forum/developers/extending-umbraco/10999-Examine-Questions?p=0#comment42951

You have to store both a case sensitive and case insensitive data as Lucene isn't really designed for data retrieval.

To do this with Examine you have to attach to the UmbracoExamine.LuceneExamineIndexer.DocumentWriting event (which may have moved into the LuceneEngine with the latest check ins, I'm not 100% sure).

This event is fired in a Lucene-scope as provides you with access to the Lucene Document object as it's being written to, and in which you'll need to add your un-analyzed version of the content.

Here's an example of how we did it in a recent project for showing in search results:

void indexer_DocumentWriting(object sender, DocumentWritingEventArgs e)
{
        var doc = e.Document;
        
        // Find the title
        string title = !e.Fields.ContainsKey("PageTitle") || string.IsNullOrEmpty(e.Fields["PageTitle"]) ? e.Fields["nodeName"] : e.Fields["PageTitle"];
        
        // Default content is nothing:
        string content = string.Empty;
        // Unless a description is found:
        if (e.Fields.ContainsKey("Description") && !string.IsNullOrEmpty(e.Fields["Description"]))
        {
                content = e.Fields["Description"];
        }
        // Or BodyContent is found:
        else if (e.Fields.ContainsKey("BodyContent") && !string.IsNullOrEmpty(e.Fields["BodyContent"]))
        {
                content = e.Fields["BodyContent"];
        }

        // Store the title and content with text casing unchanged
        doc.Add(new Field("__PageTitle", title, Field.Store.YES, Field.Index.NOT_ANALYZED));
        doc.Add(new Field("__Content", content, Field.Store.YES, Field.Index.NOT_ANALYZED));
}

Thats cool exactly what i was looking for :) one stupid question how / where do i attach to the event ? from within my code so that it executes when the index runs ?

You can use ApplicationBase like it's an Umbraco event, or you can use a HttpModule and wire it up early in the life cycle.

I'd go with ApplicationBase personally.

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