MiniORMUtils-B4X

Version: 1.14

A mini object–relational mapping (ORM) that can be use for creating db schema and SQL queries. It is suitable for Web API Template or any database system. Currently it supports SQLite and MySQL (B4J).

Usage example

Initialize object

Dim MDB As MiniORM
MDB.Initialize(Main.DBOpen, Main.DBEngine)
MDB.UseTimestamps = True
MDB.AddAfterCreate = True
MDB.AddAfterInsert = True

Note: Before calling MDB.Create and MDB.Insert, set AddAfterCreate and AddAfterInsert to True.

Create table

MDB.Table = "tbl_category"
MDB.Columns.Add(MDB.CreateORMColumn2(CreateMap("Name": "category_name")))
MDB.Create

Insert rows

MDB.Columns = Array("category_name")
MDB.Insert2(Array("Hardwares"))
MDB.Insert2(Array("Toys"))

Execute NonQuery Batch

Wait For (MDB.ExecuteBatch) Complete (Success As Boolean)
If Success Then
    Log("Database is created successfully!")
Else
    Log("Database creation failed!")
End If
MDB.Close

Select All Rows

MDB.Table = "tbl_category"
MDB.Query
Dim Items As List = MDB.Results

Update row

MDB.Table = "tbl_products"
MDB.Columns = Array("category_id", "product_code", "product_name", "product_price")
MDB.Id = 2
MDB.Save2(Array(Category_Id, Product_Code, Product_Name, Product_Price))

Soft delete row

MDB.Id = 3
MDB.SoftDelete

Permanent delete row

MDB.Id = 4
MDB.Delete

Batch delete rows

MDB.Destroy(Array As Int(2, 3))

Return number of rows in query results

Dim Rows As Int = MDB.RowCount

Return single row

Dim Data As Map = MDB.Find(2)

Return multiple rows

MDB.Table = "tbl_products"
MDB.Where = Array("category_id = ?")
MDB.Parameters = Array As String(2)
MDB.OrderBy = CreateMap("id": "DESC")
MDB.Query
Dim Data As List = MDB.Results

Join tables

MDB.Table = "tbl_products p"
MDB.Select = Array("p.*", "c.category_name")
MDB.Join = MDB.CreateORMJoin("tbl_category c", "p.category_id = c.id", "")
MDB.WhereValue(Array("c.id = ?"), Array(CategoryId))
MDB.Query
Dim Data As List = MDB.Results