FmgLib.Orm.DbHelper.PostgreSql 8.0.1

DbHelper is a modern object-relational mapper (O/RM) for .NET. It supports updates, and schema migrations. DbHelper works with SQL Server, PostgreSql, MySQL, PostgreSQL, and Oracle through a provider plugin API.

To use it, you first need to download the FmgLib.Orm.DbHelper.PostgreSql package from Nuget.

You can easily include the package in your application in Program.cs. Example usage is as follows:

using FmgLib.Orm.DbHelper.PostgreSql;

var builder = WebApplication.CreateBuilder(args);
// Add services to the container.
builder.Services.AddControllersWithViews();

await builder.Services.DbEntegrationPostgreSqlAsync(builder.Configuration.GetConnectionString("POSTGRESQL")); // OR
// builder.Services.DbEntegrationPostgreSql(builder.Configuration.GetConnectionString("POSTGRESQL")); // Asynchronous and synchronous usage is up to your preference.

var app = builder.Build();
// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Home/Error");
    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
    app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthorization();
app.MapControllerRoute(
    name: "default",
    pattern: "{controller=Home}/{action=Index}/{id?}");

app.Run();

builder.Services.DbEntegrationPostgreSql(builder.Configuration.GetConnectionString("POSTGRESQL")); we ensure integration by adding this line to your code.

Let's create an example entity:

using FmgLib.Orm.Common;

namespace FmgLib.TestWeb.Models;

[Table("PRODUCTS")]
public class Product : IDbEntity
{
    [Column(IsNotNull = true, IsPrimaryKey = true, IsAutoIncrement = true)]
    public int Id { get; set; }

    [Column(IsNotNull = true)]
    public string ProductName { get; set; }

    [Column(IsNotNull = true)]
    public double Price { get; set; }

    public int CategoryId { get; set; }
    public Category? Category { get; set; }
}

[Table("CATEGORIES")]
public class Category : IDbEntity
{
    [Column(true,true,true)]
    public int Id { get; set; }
    public string Name { get; set; }

    public int? SubCategoryId { get; set; }
    public SubCategory? SubCategory { get; set; }
}

[Table("SUBCATEGORIES")]
public class SubCategory : IDbEntity
{
    [Column(true, true, true)]
    public int Id { get; set; }
    public string Name { get; set; }
}

You can specify a special name for the table that will be created on the database side for the entity you created with the table attribute. [Table(TableName="TABLE_NAME")]

We can make special definitions for the column that will be created on the database side for the property you created with the column attribute. [Column(IsNotNull = true, IsPrimaryKey = true, IsAutoIncrement = true)]

The entity to be created must be implemented from the IDbEntity interface. Entities that are not implemented through the IDbEntity interface will not be migrated.

To benefit from these attributes, you will need to download the FmgLib.Orm.Common package from Nuget.

Let's take an example code:

using FmgLib.Develop;
using FmgLib.Orm.DbHelper;
using FmgLib.Orm.DbHelper.PostgreSql;
using FmgLib.TestWeb.Models;
using Microsoft.AspNetCore.Mvc;

namespace FmgLib.TestWeb.Controllers
{
    public class HomeController : Controller
    {
        public HomeController()
        {
        }

        public IActionResult Index()
        {
            List<Product> products = new List<Product>();
            for (int i = 1; i <= 50; i++)
            {
                var item = new Product
                {
                    ProductName = $"Deneme Test {i * 4}",
                    Price = i * 8,
                    CategoryId = i,
                };

                products.Add(item);
            }

            var query = Query.GetQuery<Product>()
                        .Where(x => x.Price > 250)
                        .Include(x => x.Category)
                        .ThenInclude(x => x.SubCategory)
                        .OrderByDescending(x => x.Category.Name)
                        .SelectBy(x => x);

            #region PostgreSql Queries

            #region Sync

            var qqqq = query.AsQueryPostgreSql().First();
            var wwww = query.AsQueryPostgreSql().First(x => x.Id > 10);
            var eeee = query.AsQueryPostgreSql().FirstOrDefault();
            var rrrr = query.AsQueryPostgreSql().FirstOrDefault(x => x.Id > 10);
            var tttt = query.AsQueryPostgreSql().ElementAt(5);
            var yyyy = query.AsQueryPostgreSql().ElementAtOrDefault(5);
            var uuuu = query.AsQueryPostgreSql().Min(x => x.Price);
            var cccc = query.AsQueryPostgreSql().MinBy(x => x.Price);
            var oooo = query.AsQueryPostgreSql().Max(x => x.Price);
            var pppp = query.AsQueryPostgreSql().MaxBy(x => x.Price);
            var llll = query.AsQueryPostgreSql().Sum(x => x.Price);
            var zzzz = query.AsQueryPostgreSql().Average(x => x.Price);
            var aaaa = query.AsQueryPostgreSql().Count();
            var ssss = query.AsQueryPostgreSql().Count(x => x.Price < 600);
            var dddd = query.AsQueryPostgreSql().Any();
            var ffff = query.AsQueryPostgreSql().Any(x => x.Price < 600);
            var gggg = query.AsQueryPostgreSql().Skip(20);
            var hhhh = query.AsQueryPostgreSql().Take(20);
            var xxxx = query.AsQueryPostgreSql().SkipAndTake(10, 20);
            var kkkk = query.AsQueryPostgreSql().ToList();

            #endregion

            #region Async

            var qqqq0 = await query.AsQueryPostgreSql().FirstAsync();
            var wwww0 = await query.AsQueryPostgreSql().FirstAsync(x => x.Id > 10);
            var eeee0 = await query.AsQueryPostgreSql().FirstOrDefaultAsync();
            var rrrr0 = await query.AsQueryPostgreSql().FirstOrDefaultAsync(x => x.Id > 10);
            var tttt0 = await query.AsQueryPostgreSql().ElementAtAsync(5);
            var yyyy0 = await query.AsQueryPostgreSql().ElementAtOrDefaultAsync(5);
            var uuuu0 = await query.AsQueryPostgreSql().MinAsync(x => x.Price);
            var cccc0 = await query.AsQueryPostgreSql().MinByAsync(x => x.Price);
            var oooo0 = await query.AsQueryPostgreSql().MaxAsync(x => x.Price);
            var pppp0 = await query.AsQueryPostgreSql().MaxByAsync(x => x.Price);
            var llll0 = await query.AsQueryPostgreSql().SumAsync(x => x.Price);
            var zzzz0 = await query.AsQueryPostgreSql().AverageAsync(x => x.Price);
            var aaaa0 = await query.AsQueryPostgreSql().CountAsync();
            var ssss0 = await query.AsQueryPostgreSql().CountAsync(x => x.Price < 600);
            var dddd0 = await query.AsQueryPostgreSql().AnyAsync();
            var ffff0 = await query.AsQueryPostgreSql().AnyAsync(x => x.Price < 600);
            var gggg0 = await query.AsQueryPostgreSql().SkipAsync(20);
            var hhhh0 = await query.AsQueryPostgreSql().TakeAsync(20);
            var xxxx0 = await query.AsQueryPostgreSql().SkipAndTakeAsync(10, 20);
            var kkkk0 = await query.AsQueryPostgreSql().ToListAsync();

            #endregion

            #endregion

            #region PostgreSql Commands

            #region Sync

            var insertr = Command
                .Insert(new Product
                {
                    ProductName = "One item insert test",
                    Price = 1234,
                    CategoryId = 234
                })
                .AsCommandPostgreSql()
                .Save();

            var insertrMulti = Command
                .InsertRange(products)
                .AsCommandPostgreSql()
                .Save();

            var updater = Command
                .Update(new Product
                {
                    ProductName = "222 TEST DENEME 22",
                    Price = 6134,
                    CategoryId = 155
                }, x => x.Id == 102)
                .AsCommandPostgreSql()
                .Save();

            var deleter = Command
                .Delete<Product>(x => x.Id == 102)
                .AsCommandPostgreSql()
                .Save();

            #endregion

            #region Async

            var insertr0 = await Command
                .Insert(new Product
                {
                    ProductName = "One item insert test",
                    Price = 1234,
                    CategoryId = 234
                })
                .AsCommandPostgreSql()
                .SaveAsync();

            var insertrMulti0 = await Command
                .InsertRange(products)
                .AsCommandPostgreSql()
                .SaveAsync();

            var updater0 = await Command
                .Update(new Product
                {
                    ProductName = "222 TEST DENEME 22",
                    Price = 6134,
                    CategoryId = 155
                }, x => x.Id == 102)
                .AsCommandPostgreSql()
                .SaveAsync();

            var deleter0 = await Command
                .Delete<Product>(x => x.Id == 102)
                .AsCommandPostgreSql()
                .SaveAsync();

            #endregion

            #endregion

            return View();
        }
    }
}