RedOrb 0.5.7

RedOrb

Simple, Intuitive, ORM

ORM for people who simply want to access a database.

Demo

Although a configuration file is required, CRUD processing is very simple to write.

using RedOrb;
using RedOrb.Attributes;
using System.Data;

// configuration
ObjectRelationMapper.PlaceholderIdentifer = ":";
ObjectRelationMapper.AddTypeHandler(DefinitionBuilder.Create<Blog>());

// database connection processing is omitted as it is out of scope.
using IDbConnection cn = null!;

// create table
cn.CreateTableOrDefault<Blog>();

// insert
var c = new Blog { Url = "test" };
cn.Save(c);

// primary key search
var blog = cn.Load(new Blog { BlogId = 1 });


[DbTable("blogs")]
public class Blog
{
	[DbColumn("serial8", IsAutoNumber = true, IsPrimaryKey = true)]
	public int BlogId { get; set; }
	[DbColumn("text")]
	public string Url { get; set; } = string.Empty;
}

Features

General

• Connection classes are not hidden
• Supports SQL logging
• DBMS independent
• Supports sequence keys
• Supports composite keys

When reading

• All tables with a 1:1 or 1:0..1 relationship are joined and read (default)
• You can set whether to join tables.
• You can use primary key search and unique key search.
• You can also specify any search conditions.

When saving

• All tables with 1 to 0..N relationships are saved.

Constraints

General

• Connection class generation is out of scope

When loading

• Column filtering is not possible.

When saving

• If the primary key value is zero, it is considered to be added. (Primary key value cannot be registered with zero)

Getting started

PM> NuGet\Install-Package RedOrb

Configuration

Register the type mapping only once before using RedOrb.

using RedOrb;
using RedOrb.Attributes;

ObjectRelationMapper.PlaceholderIdentifer = ":";
ObjectRelationMapper.AddTypeHandler(DefinitionBuilder.Create<Blog>());

Create Table

using RedOrb;

using IDbConnection cn = SomethingMethod();
cn.CreateTableOrDefault<Blog>();

create table if not exists blogs (
    blog_id serial8 not null, 
    url text not null, 
    primary key(blog_id)
)

Create(Insert)

using RedOrb;

using IDbConnection cn = SomethingMethod();
var newBlog = new Blog { Url = "http://blogs.msdn.com/adonet" };
Assert.Equal(0, newBlog.BlodId);
cn.Save(newBlog);
Assert.NotEqual(0, newBlog.BlodId);

/*
  Url = '"http://blogs.msdn.com/adonet'
*/
insert into blogs (url)
SELECT
    v.url
FROM
    (
        VALUES
            (:Url)
    ) AS v (
        url
    )
returning blog_id;

Read(Select)

using RedOrb;

using IDbConnection cn = SomethingMethod();
var blog = cn.Load(new Blog() { BlodId = 1 });

/*
  key0 = 1
*/
SELECT
    t0.blog_id AS t0BlogId,
    t0.url AS t0Url
FROM
    blogs AS t0
WHERE
    t0.blog_id = :key0

Update

using RedOrb;

using IDbConnection cn = SomethingMethod();
var blog = cn.Load(new Blog() { BlodId = 1 });
blog.Url = "https://devblogs.microsoft.com/dotnet";
cn.Save(blog);

/*
  BlogId = 1
  Url = 'https://devblogs.microsoft.com/dotnet'
*/
UPDATE
    blogs AS d
SET
    url = q.url
FROM
    (
        SELECT
            v.blog_id,
            v.url
        FROM
            (
                VALUES
                    (:BlogId, :Url)
            ) AS v (
                blog_id, url
            )
    ) AS q
WHERE
    d.blog_id = q.blog_id;

Delete

using RedOrb;

using IDbConnection cn = SomethingMethod();
cn.Delete(new Blog() { BlodId = 1 });

/*
  BlogId = 1
*/
delete from blogs as d
where
    (d.blog_id) in (select v.blog_id from (values (:BlogId)) as v (blog_id));

Advanced usage

Please refer to the wiki for advanced usage such as how to write a Model, Fetch, and CascadeRule. https://github.com/mk3008/RedOrb/wiki

Referenced Libraries

UTF8JSON / MIT License

https://github.com/neuecc/Utf8Json/

https://github.com/neuecc/Utf8Json/blob/master/LICENSE

Copyright (c) 2017 Yoshifumi Kawai

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Carbunql / MIT License

https://github.com/mk3008/Carbunql

https://github.com/mk3008/Carbunql/blob/main/LICENSE

Copyright (c) 2022 MSugiura

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.