AzureSearchToolkit

AzureSearchToolkit is a lightweight set of tools for Azure Search to quickly build search functionalities for .NET Standard web apps. It leans heavily on ElasticSearchLINQ.

It features a rich LINQ provider which allows to write strongly typed queries based on your derived context and entity classes. A representation of the LINQ query is passed to the AzureSearch provider, to be translated in ODATA query language.

How to use

1. Include latest package into your project using NuGet.

2. First define your model that will be used for your search index.

[SerializePropertyNamesAsCamelCase]
class Listing
{
    [Key]
    [IsFilterable]
    public string Id { get; set; }

    [IsFilterable, IsSortable]
    public DateTime? CreatedAt { get; set; }

    [IsSearchable]
    public string Description { get; set; }

    [IsFacetable, IsFilterable, IsSortable]
    public double Price { get; set; }

    [IsFilterable, IsSearchable, IsSortable]
    public string Title { get; set; }

    [IsFilterable]
    public bool Active { get; set; }

    [IsFilterable]
    public string[] Tags { get; set; }

    [IsFilterable, IsSortable]
    public GeographyPoint Place { get; set; }
}

3. Use AzureSearchToolkit using direct instantiation.

using AzureSearchToolkit;

...

using (var connection = new AzureSearchConnection("<your search instance name>", 
     "<your search instance key>", "<name of search index>"))
{
    var context = new AzureSearchContext(connection);

    //Return filtered, ordered, paginated results from Azure Search index using LINQ
    var listings = await context
        .Query<Listing>()
        .Where(q => q.Title.Contains("Your title"))
        .OrderByDescending(q => q.CreatedAt)
        .Skip(10)
        .Take(25)
        .ToListAsync();

    var firstListing = listings.First();

    firstListing.Title = "Different title";

    //Update entity
    var wasUpdateSuccessfull = await context.UpdateAsync(firstListing);

    //Delete entity
    var wasDeleteSuccessFull = await context.RemoveAsync(firstListing);

    var newListing = new Listing
    {
        Id = Guid.NewGuid(),
        Title = "Title"
    };

    //Create or update entity
    var wasAddingSuccessfull = await context.AddOrUpdateAsync(newListing);
}

or

3. Use AzureSearchToolkit using Autofac dependency injection.

using AzureSearchToolkit;

namespace Toolkit
{
    public class AzureSearchToolkitModule : Autofac.Module
    {
        protected override void Load(ContainerBuilder builder)
        {
            builder
                .Register(ctx =>
                {
                    return new AzureSearchConnection(
                        "<your search instance name>", 
                        "<your search instance key>", 
                        "<name of search index>"
                        );
                })
                .As<IAzureSearchConnection>()
                .InstancePerLifetimeScope();

            builder
                .RegisterType<AzureSearchContext>()
                .As<IAzureSearchContext>().InstancePerLifetimeScope();
        }
    }
}

4. Inject IAzureSearchContext into your class

using AzureSearchToolkit;

namespace Toolkit
{
    public class Example 
    {
        private IAzureSearchContext _context;

        public AzureSearchToolkitExample(IAzureSearchContext context) 
        {
            _context = context;
        }

        public void UseAzureSearchContext() 
        {
            //Return filtered, ordered, paginated results from Azure Search index using LINQ
            var listings = await _context
                .Query<Listing>()
                .Where(q => q.Title.Contains("Your title"))
                .OrderByDescending(q => q.CreatedAt)
                .Skip(10)
                .Take(25)
                .ToListAsync();
            }
        }
    }
}