Index Construction

FullTextIndexBuilder<TKey>

FullTextIndexBuilder requires a single generic type provided to it. This defines the type of the key that documents will be indexed against.

In simple cases this will just be a string, Guid, Int32 or UInt32. Indexes can be built with other key types, including composite types, but special care needs to be made when using the binary serializer. See Key Serialization for more information.

Quick examples

Create an index with defaults:

• case insensitive
• accent insensitive
• full LIFTI query syntax for queries (Don’t want this? See WithSimpleQueryParser)
• no word stemming
• splitting only on punctuation, whitespace and control characters

var index = new FullTextIndexBuilder<int>()
    .Build();

Enable word stemming:

var index = new FullTextIndexBuilder<int>()
    .WithDefaultTokenizationOptions(o => o.WithStemming())
    .Build();

With object indexing enabled for a Customer type and stemming only enabled for the Notes property:

var index = new FullTextIndexBuilder<int>()
    .WithObjectTokenization<Customer>(o => o
      .WithId(c => c.CustomerId)
      .WithField("Name", c=>c.Name)
      .WithField("Notes", c=>c.Notes, fo => fo.WithStemming())
    )
    .Build();