How to structure domain model when using NHibernate Search/Lucene

Question

I am messing around with NHibernate Search and Lucene to create a searchable index of legal entities. My domain model looks somewhat like this:

[Indexed]
public abstract class LegalEntity : AggregateRoot
{
    public virtual Address Address { get; set; }
}

public class Person : LegalEntity
{
    public virtual string FirstNames { get; set; }
    public virtual string LastName { get; set; }
}

public class Company: LegalEntity
{
    public virtual string Name { get; set; }
}

public class Address : Component
{
    public virtual string Street { get; set; }
    public virtual string HouseNumber { get; set; }
    // etc...
}

As the subclassing implies, LegalEntity is an NHibernate entity specialized as Person and Company, and Address is an NHibernate component.

Now, how would I best go about creating a really Google-like fuzzy search that includes all the fields of a LegalEntity, including those inside the Address component?

My first idea was to implement an AddressFieldBridge to help in bringing in the fields of the Address component, and then just throw in [Field] on all the fields, but then I could not find a way to construct a FuzzyQuery as a conjuntion between multiple search terms.

My next idea was to create an abstract property tagged with [Field] on LegalEntity, like so:

    [Field(Index.Tokenized)]
    public abstract string SearchableText { get; }

and then have Person and Company return texts that combine names and all the fields from the Address component into one string, which would then be tokenized and indexed by Lucene.

That, however, made me feel kind of icky.

I would like to learn the best and least intrusive (from a domain model perspective) way to accomplish this task - any suggestions are appreciated :)

Answer 1

Take a look at my question.

Andrey created patch to specify lucene stuff outside. Syntax ain't uber clean (maybe there's some progress done on this, haven't checked), but i guess it gets job done.