BoostingTests.cs

using System.Diagnostics;
using System.Linq;
using Raven.Abstractions.Indexing;
using Raven.Client;
using Raven.Client.Indexes;
using Raven.Imports.Newtonsoft.Json;
using Raven.Tests.Helpers;
using Xunit;

namespace RavenTests
{
    public class BoostingTests : RavenTestBase
    {
        public class Post
        {
            public string Title { get; set; }
            public string Body { get; set; }
        }

        [Fact]
        public void Test()
        {
            using (var documentStore = NewDocumentStore())
            {
                documentStore.ExecuteIndex(new TestIndex());

                using (var session = documentStore.OpenSession())
                {
                    session.Store(new Post { Title = "Foo Foo Foo", Body = "Foo Foo Foo" });
                    session.Store(new Post { Title = "Microsoft", Body = "Bar Bar" });
                    session.Store(new Post { Title = "Foo RavenDB Foo", Body = "Foo Foo Foo" });
                    session.Store(new Post { Title = "Foo Foo Foo", Body = "Foo Microsoft Foo" });
                    session.Store(new Post { Title = "Foo Microsoft Foo", Body = "Foo Foo Foo" });
                    session.Store(new Post { Title = "Bar Bar Bar", Body = "Foo Google Foo" });

                    session.SaveChanges();
                }

                WaitForIndexing(documentStore);

                using (var session = documentStore.OpenSession())
                {
                    var boostValue = 10;
                    var boostTerms = new[] { "RavenDB", "Microsoft", "Google" };
                    
                    var boostQuery = "* " + string.Join(" ", boostTerms.Select(x => x + "^" + boostValue));

                    var q = session.Query<SearchResult, TestIndex>()
                                   .Search(x => x.Query, "Foo")
                                   .Search(x => x.Title, boostQuery, 1, SearchOptions.And, EscapeQueryOptions.RawQuery)
                                   .As<Post>();
                    

                    Debug.WriteLine("Here's the query: {0}", q);
                    Debug.WriteLine("");

                    Debug.WriteLine("And here's the results:");
                    foreach (var result in q)
                        Debug.WriteLine(JsonConvert.SerializeObject(result, Formatting.Indented));
                }
            }
        }

        public class SearchResult
        {
            public string Title { get; set; }
            public string Query { get; set; }
        }

        public class TestIndex : AbstractIndexCreationTask<Post, SearchResult>
        {
            public TestIndex()
            {
                Map = posts => from post in posts
                               select new
                                   {
                                       post.Title,
                                       Query = new[] { post.Title, post.Body }
                                   };

                Index(x => x.Title, FieldIndexing.Analyzed);
                Index(x => x.Query, FieldIndexing.Analyzed);
            }
        }
    }
}