README.md

xDataAccess

WhatIs((x, DataAccess) => { x = "Generic"; DataAccess = "Data Access Layer"; });

xDataAccess is an open-source cross-platform framework to dynamically build quires from lambda expression up to providing a complete data access layer for different data sources from the query generation up to the execution and data manipulation. It is Generic and extensible with different data source dialects.

• Libraries
• Features
• How to Use
  • Models
  • XDataAccess.QueryBuilder
    • Select
    • Update
    • Delete
    • Insert

Libraries

Project	Pipeline Status	Latest Release
XDataAccess.QueryBuilder		v0.1.0 Preview

Features

• Query Generation
  • Sql Server dialect
  • Oracle dialect
  • MySql dialect
  • Postgres dialect

How to Use

Models

public class Employee
{
    public int Id { get; set; }
    public string Name { get; set; }
}

[Entity("dbo.employee")]
public class EmployeeWithAttributes
{
    [Identity]
    public int Id { get; set; }

    [PropertyAttribute("name")]
    public string Name { get; set; }

    [Ignore]
    public DateTime CreateDate { get; set; }
}

XDataAccess.QueryBuilder

var compiler = new SqlServerCompiler();
var builder = new QueryBuilder<EmployeeWithAttributes>(compiler);

Select

var output1 = builder.Select() as DbCompileResult; 
// "SELECT * FROM dbo.employee"

var output2 = builder.Select(e => (e.Id == 1 && e.Name == "value1") || e.Name != "value2") as DbCompileResult; 
// "SELECT * FROM dbo.employee WHERE ((([Id] = @P0) AND ([name] = @P1)) OR ([name] <> @P2))"

var output3 = builder.Select(e => e.Name == null) as DbCompileResult; 
// "SELECT * FROM dbo.employee WHERE ([name] IS NULL)"

var output4 = builder.Select(e => e.Name.Contains ("test")) as DbCompileResult; 
// "SELECT * FROM dbo.employee WHERE ([name] LIKE '%' + @P0 + '%')"

Update

var employeeToUpdate = new EmployeeWithAttributes() { Id = 1, Name = "test" };
var result = builder.Update(employeeToUpdate) as DbCompileResult; 
// "UPDATE dbo.employee SET [name] = @P0 WHERE [Id] = @P1"

Or

var result = builder.Update(employeeToUpdate, e => e.Id == 1) as DbCompileResult; 
// "UPDATE dbo.employee SET [name] = @P0 WHERE ([Id] = @P1)"

Delete

var result = builder.Delete (e => e.Id == 1) as DbCompileResult; 
// "DELETE FROM Employee WHERE ([Id] = @P0)"

Insert

var employee = new Employee() { Id = 1, Name = "Employee Name" };
var result = builder.Insert(employee) as DbCompileResult; 
// "INSERT INTO Employee ([Id],[Name]) VALUES (@P0,@P1)"