B4J Library [Web] WebAPI Controller

Version : 1.06
This library is use to create basic controller class in Web API Server v2.04+ template.

Library:

• WebApiController.jar
• WebApiController.xml

GitHub:
https://github.com/pyhoon/WebApiController-B4J

Generated code:

' Api Controller
' Version 1.06
' For creating Controller such as ProductsController
Sub Class_Globals
    Private Request As ServletRequest
    Private Response As ServletResponse
    Private HRM As HttpResponseMessage
    Private DB As MiniORM
    Private Method As String
    Private Version As String
    Private Elements() As String
    Private ApiVersionIndex As Int
    Private ControllerIndex As Int
    Private ElementLastIndex As Int
    Private FirstIndex As Int
    Private FirstElement As String
End Sub

Public Sub Initialize (req As ServletRequest, resp As ServletResponse)
    Request = req
    Response = resp
    HRM.Initialize
    DB.Initialize(Main.DBOpen, Main.DBEngine)
End Sub

Private Sub ReturnApiResponse 'ignore
    HRM.SimpleResponse = Main.SimpleResponse
    WebApiUtils.ReturnHttpResponse(HRM, Response)
End Sub

Private Sub ReturnBadRequest
    WebApiUtils.ReturnBadRequest(Response)
End Sub

Private Sub ReturnMethodNotAllow
    WebApiUtils.ReturnMethodNotAllow(Response)
End Sub

Private Sub ReturnErrorUnprocessableEntity
    WebApiUtils.ReturnErrorUnprocessableEntity(Response)
End Sub

' Api Router
Public Sub RouteApi
    Method = Request.Method.ToUpperCase
    Elements = WebApiUtils.GetUriElements(Request.RequestURI)
    ApiVersionIndex = Main.Element.ApiVersionIndex
    ControllerIndex = Main.Element.ApiControllerIndex
    Version = Elements(ApiVersionIndex)
    ElementLastIndex = Elements.Length - 1
    If ElementLastIndex > ControllerIndex Then
        FirstIndex = ControllerIndex + 1
        FirstElement = Elements(FirstIndex)
    End If

    Select Method
        Case "GET"
            ' Snippet: Code_WebApiUtils_03 GET Route
            RouteGet
        Case "POST"
            ' Snippet: Code_WebApiUtils_04 POST Route
            'RoutePost
        Case "PUT"
            ' Snippet: Code_WebApiUtils_05 PUT Route
            'RoutePut
        Case "DELETE"
            ' Snippet: Code_WebApiUtils_06 DELETE Route
            'RouteDelete
        Case Else
            Log("Unsupported method: " & Method)
            ReturnMethodNotAllow
    End Select
End Sub

' Web Router
Public Sub RouteWeb
    Method = Request.Method.ToUpperCase
    Elements = WebApiUtils.GetUriElements(Request.RequestURI)
    ElementLastIndex = Elements.Length - 1
    ControllerIndex = Main.Element.WebControllerIndex
    If ElementLastIndex > ControllerIndex Then
        FirstIndex = ControllerIndex + 1
        FirstElement = Elements(FirstIndex)
    End If
 
    Select Method
        Case "GET"
            Select ElementLastIndex
                Case ControllerIndex
                    ' Snippet: Code_WebApiUtils_07 Show Web Page
                    'ShowPage
                    Return
            End Select
        Case Else
            Log("Unsupported method: " & Method)
            WebApiUtils.ReturnMethodNotAllow(Response)
    End Select
End Sub

' Snippet: Code_WebApiUtils_03 GET Route
Private Sub RouteGet
    Select Version
        Case "v2"
            Select ElementLastIndex
                Case ControllerIndex
                    ' Snippet: Code_MiniORMUtils_01 Get Resources as List
                    'GetPlural
                    Return
                Case FirstIndex
                    If IsNumber(FirstElement) = False Then
                        ReturnErrorUnprocessableEntity
                        Return
                    End If
                    ' Snippet: Code_MiniORMUtils_02 Get Resource as Map by Id
                    'GetSingular(FirstElement)
                    Return
            End Select
    End Select
    ReturnBadRequest
End Sub

This project has been tested many many times. Please report bugs if you found any
Post your question in a new thread.

 

[peacemaker]

It would be good to have a tutorial how to use all sub-systems in a whole system, with step by step descriptions and links to the sub-systems.
For me it's interesting usually for any new project - starting with the DB structure development... And next during development i'm updating the structure, adding\editing the fields, tables... And just after structure update - start the app and test the made addition.

 

[aeric]

a tutorial how to use all sub-systems in a whole system

I have created some tutorials but some information are already outdated.

Tutorials:

1. Getting Started
2. Download File Example
3. Vue 3 CRUD Example
4. Using Web API Controller
5. Using #Plural tag

I also have created live streaming on YouTube.

Creating Web API Server with B4X Template

Creating Web API Server with B4X Template The videos are recorded from my previous YouTube Live Streaming. You are welcome to subscribe to my channel for upcoming videos. Please create a new thread for any question. Thanks.

www.b4x.com

Maybe I plan another YouTube tutorial after I released the stable version of Web API Server template v2.06.

 

[aeric]

Version : 1.05

• Controller (Api) - For creating Controller such as ProductsController
• Controller (Find)* - For creating Controller that suitable for searching another Controller (with Categories and Products controllers example)
• Controller (Web) - For creating Controller that suitable for IndexController or home page (that does not return Api)

*new

 

[aeric]

Version : 1.06

• Minor updates for supporting Web API Server template v2.07