beginor / nhibernate-extensions

NHibernate Extensions for .NET Core

Some useful extensions for NHibernate

Some useful extensions for NHibernate used in my projects.

NHibernate.Extensions.NpgSql

• Extended PostgreSQL driver NpgSqlDriver for NHibernate, with support of:

  • Type of json and jsonb
  • Array type of boolean, double, float (real), int, short (small int), long (big int) and string (character)；

• Extended PostgreSQL dialect NpgSqlDialect for schema export of supported types.

NHibernate.Extensions.Sqlite

NHibernate driver for the Microsoft.Data.Sqlite.Core data provider for .NET.

In order to use this driver, you must have the nuget package Microsoft.Data.Sqlite.Core and SQLitePCLRaw.bundle_e_sqlite3 installed for NHibernate to load.

It's a .NET Standard 2.0 Driver, Can run on any platform that dotnet core support.

NHibernate.NetCore

Extensions for NHibernate when used in dotnet core:

• Use Microsoft.Extensions.Logging.ILoggerFactory as NHibernate's logger factory;
• Service Collection Extension of AddHibernate method for integration with IServiceProvider;
• OrderBy(string propertyName), OrderByDescending(string propertyName) and AddOrderBy(string propertyName, bool isAsc) extension methods to IQueryable<T>, make fun with dynamic order by.

Example usage:

public void ConfigureServices(IServiceCollection services) {
    // where is your hibernate.config path
    var path = System.IO.Path.Combine(
        AppDomain.CurrentDomain.BaseDirectory,
        "hibernate.config"
    );
    // add NHibernate services;
    services.AddHibernate(path);
}

public void Configure(
    IApplicationBuilder app,
    IHostingEnvironment env,
    Microsoft.Extensions.Logging.ILoggerFactory loggerFactory
) {
    // Use loggerFactory as NHibernate logger factory.
    loggerFactory.UseAsHibernateLoggerFactory();
    /* other code goes here */
}

And then use ISessionFactory in your controller:

[Route("api/[controller]")]
public class SamplesController : Controller {

    private ISessionFactory sessionFactory;

    public SamplesController(ISessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

    protected override void Dispose(bool disposing) {
        if (disposing) {
            sessionFactory = null;
        }
    }

    [HttpGet("")]
    public async Task<IList<Sample>> GetAll() {
        try {
            using (var session = sessionFactory.OpenSession()) {
                var result = await session.Query<Sample>().ToListAsync();
                return result;
            }
        }
        catch (Exception ex) {
            return StatusCode(500, ex.Message);
        }
    }
}

Or just use ISession in your controller:

[Route("api/[controller]")]
public class SamplesController : Controller {

    private ISession session;

    public SamplesController(ISession session) {
        this.session = session;
    }

    protected override void Dispose(bool disposing) {
        if (disposing) {
            session = null;
        }
    }

    [HttpGet("")]
    public async Task<IList<Sample>> GetAll() {
        try {
            var result = await session.Query<Sample>().ToListAsync();
            return result;
        }
        catch (Exception ex) {
            return StatusCode(500, ex.Message);
        }
    }
}

• ISessionFactory is registerd as a singleton service, you should not dispose it;
• ISession is registerd as a scoped service, so you do not need to dispose it by hand;