MiniORMUtils-B4X

Version: 2.51

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 Info As ConnectionInfo
Info.Initialize
info.DBType = "SQLite"
Info.DBFile = "data.db"

Dim Conn As ORMConnector
Conn.Initialize(Info)

Dim DB As MiniORM
DB.Initialize(Conn.DBEngine, Conn.DBOpen)
DB.UseTimestamps = True
DB.QueryAddToBatch = True

Note: Before calling DB.Create and DB.Insert, set QueryAddToBatch to True.

Create table

DB.Table = "tbl_category"
DB.Columns.Add(DB.CreateColumn2(CreateMap("Name": "category_name")))
DB.Create

Insert rows

DB.Columns = Array("category_name")
DB.Insert2(Array As String("Hardwares"))
DB.Insert2(Array As String("Toys"))

Execute NonQuery Batch

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

Select All Rows

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

Update row

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

Soft delete row

DB.Id = 3
DB.SoftDelete

Permanent delete row

DB.Id = 4
DB.Delete

Batch delete rows

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

Return number of rows in query results

Dim Rows As Int = DB.RowCount

Return single row

Dim Data As Map = DB.Find(2)

Return multiple rows

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

Join tables

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