backend-plus

backend-plus

Backend for the anti Pareto rule.

language: also available in:

It's a framework for developing web applications based on PostgreSQL database. It's main features are:

1. It is based on centralized metadata that defines:
   1. The data structure (tables and views structure)
   2. The procedures structure (param definition, permissions, encoding)
   3. The menus structure
2. It provides:
   1. Editable grids (orderable and filterable), with support for edit data using XLSX format files
   2. Login mechanism
   3. Menus
   4. Skins definition

API

table definitions

module definitions

client side definitions

Menus definition

menuType	use
menu	menu or submenu
table	grid or table
proc	procedures

property	type	default value	menuType	use
menuType	T			menu Type
name	T			option name (id)
menuContent	A		menu	menu content
table	T	name	table	table name
label	T	name		if you don't want to use default value to display in menu
selectedByDefault	B			is the selected by default option
autoproced	B	false	proc	if yo want to execute the procedure without clicking the proced button

Integrating example:

    getMenu(context){
        return {menu:[
            {menuType:'menu', name:'periodic table', menuContent:[
                {menuType:'table', name:'ptable'  , label:'elements'},
                {menuType:'table', name:'pgroups' , label:'groups'  },
                {menuType:'table', name:'isotopes', label:'isotopes'},
                {menuType:'proc' , name:'count_without_isotopes', label:'count'}
            ]},
            {menuType:'table', name:'images', table:'element_images'},
            {menuType:'menu', name:'test', menuContent:[
                {menuType:'table', name:'bigint'},
            ]},
            {menuType:'menu', name:'config', menuContent:[
                {name:'users', menuType:'table'},
            ]},
        ]}
    }

Procedures definition

procDef:

property	type	default value	use
action	T		Name that will be invoked the procedure
bitacora	BO	{ error:false, always:false }	Bitacora Object for core functions register
parameters	POA	[]	Param Objects Array
cacheable	Bool	false	The result can be cached
coreFunction	F		Function that implements the procedure

bitacoraDef:

propiedad	tipo	default value	uso
error	B	false	If true, bitacora saves data of error ocurred during core function execution
always	B	false	If true, bitacora saves all data ocurred during core function execution (overrides error)
targetTable	T	null	Tablename for update result of execution data (must to exists a record for update) (see targetTableBitacoraFields). Use null for ignore option
targetTableBitacoraFields	O	{ init_date: 'init_date', end_date: 'end_date', has_error: 'has_error', end_status: 'end_status'}	Objects who defines the fields where 'targetTable' will reply bitacora fields (If targetTable is null it's ommited)
targetTableUpdateFieldsCondition	A	null	Fields array to define update condition (each value must to be passed as parameter with the same field name)

paramDef:

property	type	default value	use
name	T		name of the parameter that is sent to the procedure
defaultValue	según typeName		parameter default value
typeName	T		to define the data type
label	T	name	if you don't want to use default value to display on screen

coreFunction(context, parameters)

context	uso
be	backendApp object
username	username

Process definition example:

    {
        action:'count_without_isotopes',
        bitacora:{
                   error:true,
                   always:true,
                   targetTable:'other_table',
                   targetTableBitacoraFields: {
                                                init_date: 'fecha_hora_inicio',
                                                end_date: 'fecha_hora_final',
                                                has_error: 'hubo_error',
                                                end_status: 'resultado'
                                              },
                   targetTableUpdateFieldsCondition: ['id']
                 },
        parameters:[
            {name:'first_atomic_number', defaultValue:10, typeName:'integer'},
            {name:'last_atomic_number' , defaultValue:99, typeName:'integer'},
        ],
        coreFunction:function(context, parameters){
            return context.client.query(
                `SELECT count(*) as number_of_elements
                   FROM ptable p left join isotopes i on p.atomic_number=i.atomic_number
                   WHERE i.atomic_number IS NULL
                     AND p.atomic_number between coalesce($1,0) and coalesce($2,999)`,
                [parameters.first_atomic_number, parameters.last_atomic_number]
            ).fetchUniqueRow().then(function(result){
                return result.row.number_of_elements;
            });
        }
    },

def-config

/// def-config.ts
export defConfig=`
server:
  port: 3000
  base-url: /my-app
db:
  motor: postgresql
  host: localhost
  database: my_app_db
  user: my_app_user
install:
  dump:
    db:
      owner: my_app_owner
client-setup:
  title: My app
  lang: es
`;

/// main.ts
import {defConfig} from "./def-config"

export function emergeMyApp<T extends Constructor<AppBackend>>(Base:T){
    /// ...
    configStaticConfig(){
        super.configStaticConfig();
        this.setStaticConfig(defConfig);
    }
    ///...
}

The general application config is setted with setStaticConfig. Any option can be overwrited in local-config.yaml file.

BACKEND_PLUS_LOCAL_CONFIG enviroment variable can be a filename.yaml with more config options.

config format:

entry	usage
server
.port	port where is listening
.base-url	base url added to domain name
.module-store
install	(see Spanish)
.dump	(see Spanish)
..db.owner	(see Spanish)
..scripts.post-adapt	(see Spanish)
..scripts.parts-order	(see Spanish)
devel	(see Spanish)
.delay	(see Spanish)
.cache-content	(see Spanish)
.forceShowAsEditable	(see Spanish)
login	(see Spanish)
.plus	(see Spanish)
..allowHttpLogin	(see Spanish)
log	(see Spanish)
.req	(see Spanish)
.session	(see Spanish)
client-setup	(see Spanish)
.cursors	(see Spanish)
.skin	(see Spanish)
.menu	(see Spanish)
.title	(see Spanish)
.lang	(see Spanish)

install:
  dump:
    db:
      owner: user_owner
    scripts:
      post-adapt: [special_triggers.sql, other_constraints.sql]
login:
  plus:
    allowHttpLogin: true
    store:
      module-name: file
log:
  req: true
  session: true
devel:
  cache-content: true

Install

$ npm install backend-plus

License

MIT

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