Simple.Data intro slides
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This document introduces Simple.Data, an open source .NET library that aims to simplify database access. It demonstrates how Simple.Data allows retrieving data with a single line of code, compared to multiple lines of code needed with traditional ADO.NET. Simple.Data also supports more complex queries and basic object-relational mapping capabilities. The goal of Simple.Data is to favor convention over configuration for common data access tasks.
Simple.Data intro slides
- 1. Simple.Data .NET database access made easier
- 2. ADO.NET using (var connection = new SqlConnection(connectionString)) { using (var command = connection.CreateCommand()) { command.CommandText = "select Id, FirstName, LastName“ + " from people where Id = @id"; command.Parameters.Add("@id", SqlDbType.Int).Value = id; connection.Open(); using (var reader = command.ExecuteReader()) { if (reader.Read()) { return new Person { Id = reader.GetInt32(0), FirstName = reader.IsDBNull(1) ? “” : reader.GetString(1), LastName = reader.IsDBNull(2) ? “” : reader.GetString(2), }; } } } }
- 3. Microsoft.Data // What you should do... using (var database = Database.Open()) { var sql = "select Id, FirstName, LastName" + " from people where Id = @0"; return database.Query(sql, id); }
- 4. Microsoft.Data // What PHP refugees will actually do... using (var database = Database.Open()) { var sql = "select Id, FirstName, LastName" + " from people where Id = “ + id; return database.Query(sql); }
- 5. Simple.Data var database = Database.Open(); return database.People.FindById(id); // Easier to do it right
- 6. Simple.Data… …is Database agnostic …is naming-style tolerant PascalCase, SHOUTY_CASE, snake_case …favours Convention over Configuration …is not an O/RM
- 7. Simple CRUD db.People.Insert(Id: 1, FirstName: “Bob”, …); db.People.FindAllByName(“Bob”); db.People.FindByFirstNameAndLastName(“Bob”, “X”); db.People.UpdateById(Id: 1, FirstName: “Robert”); db.People.DeleteById(1);
- 8. Complex queries db.Find(db.Users.JoinDate >= new DateTime(2010,11,13); db.Find(db.Posts.Comments.Approved != "Y") db.Find(db.Users.Age >= 18 && db.Users.Age <= 35) (Simple.Data uses operator overloading to turn these expressions into its own SimpleExpression objects)
- 9. Simple O/RM var person = db.People.FindById(1); foreach (var telNo in person.PhoneNumbers) { if (telNo.DiallingCode.StartsWith(“07”)) { SendSpamText(telNo); } }
- 10. Simple.Data… …is Open Source (MIT license) …can be downloaded from: http://github.com/markrendle/Simple.Data/ …wants to be forked, patched and loved Mark Rendle ~ twitter.com/markrendle ~ blog.markrendle.net