Lucene stemming

[kristoffer]

Does anyone have experience using a stemming analyzer with Lucene in Litium? Where would be the appropriate place to configure it?

Litium version: N/A

[patric.forsgard]

It exists multiple places you need to touch to add own analyzers into the Litium implementation.
Analyzers is used for both indexing and searching. You need to create a reference to Litium.Framework.Search.Lucene NuGet package if it not already exists.

1. Configure so implementation knows about your analyzer

Litium.Framework.Search.Lucene.AnalyzerService
      .Instance
      .Factory.Analyzers
      .Add("my_analyzer", new global::Lucene.Net.Analysis.SimpleAnalyzer());

2. Change how data is indexed

using System;
using System.Linq;
using Litium.Foundation.Modules.ProductCatalog.Search;
using Litium.Foundation.Search.Providers;
using Litium.Framework.Search.Indexing;

namespace Litium.Accelerator.Search
{
    internal class AnalyzerProcessor : IIndexingProviderPreProcessor
    {
        public IndexDocument PreProcessDocument(IndexDocument document, string indexName)
        {
            if (ProductCatalogSearchDomains.Products.Equals(indexName, StringComparison.OrdinalIgnoreCase))
            {
                foreach (var tag in document.Tags.Where(x => x.Name.Equals("your_tag_name", StringComparison.OrdinalIgnoreCase)))
                {
                    tag.Analyzed = true;
                    tag.Analyzer = "my_analyzer";
                }
            }
            return document;
        }
    }
}

3. Searching
   request.FilterTags.Add(new Tag("your_tag_name", "value") { Analyzer = "my_analyzer" });