lua-orm

lua orm lib for database schema, can use like a ordinary lua table

require

• lua5.3.0

  • new metamethod __oldindex to hook table set when key already existed
  • need a code patch, you can see detail in this commit

• lua5.3.2

  • new function enable_oldindex(table, boolean) to enable table's __oldindex feature(default not enable)
  • new metamethod __oldindex to hook hook table set when key already existed(in lua code)
  • need a code patch, you can see detail in this commit

• lpeg for schema parser

support

• basic data type: boolean, integer, string, struct, list, map
• custom define class
• class ref

typedef examples

struct

class_a {
    a integer
    b integer
    c boolean
    d string
}

list

class_b [integer]

map

class_c <integer, string>

class ref

class_d {
    a class_a
    b class_b
    c class_c
}

complex

class_e {
    a {
        b [integer]
    }
    b [class_c]
    c <string, class_c>
    d {
        a integer
        b string
        c {
            a integer
            b [string]
            c <string, integer>
        }
    }
}

lua code examples

local orm = require 'orm'
local type_list = (require 'typedef').parse('test.td', ".")
orm.init(type_list)
local obj_a = orm.create('class_a')

you need make lua first and can see more examples in test.lua.

if you want create your own typedef syntax, you can see typedef.lua.