(PowerBuilder) DVLA Vehicle Enquiry Service

Demonstrates how to make a call to the DVLA Vehicle Enquiry API to get vehicle details of a specified vehicle. It uses the vehicle registration number as input to search and provide details of the vehicle.

For more information, see https://developer-portal.driver-vehicle-licensing.api.gov.uk/apis/vehicle-enquiry-service/vehicle-enquiry-service-description.html

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Http
integer li_Success
oleobject loo_Json
oleobject loo_Resp
oleobject loo_SbResponseBody
oleobject loo_JResp
integer li_RespStatusCode
string ls_ArtEndDate
integer li_Co2Emissions
string ls_Colour
integer li_EngineCapacity
string ls_FuelType
string ls_Make
integer li_MarkedForExport
string ls_MonthOfFirstRegistration
string ls_MotStatus
string ls_RegistrationNumber
integer li_RevenueWeight
string ls_TaxDueDate
string ls_TaxStatus
string ls_TypeApproval
string ls_Wheelplan
integer li_YearOfManufacture
string ls_EuroStatus
string ls_RealDrivingEmissions
string ls_DateOfLastV5CIssued

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

loo_Http = create oleobject
// Use "Chilkat_9_5_0.Http" for versions of Chilkat < 10.0.0
li_rc = loo_Http.ConnectToNewObject("Chilkat.Http")
if li_rc < 0 then
    destroy loo_Http
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// Implements the following CURL command:

// curl -X POST https://driver-vehicle-licensing.api.gov.uk/vehicle-enquiry/v1/vehicles \
//   -H "x-api-key: supplied API key" \
//   -H "Accept: application/json" \
//   -d '{"registrationNumber": "ABC1234"}'

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

// Use this online tool to generate code from sample JSON:
// Generate Code to Create JSON

// The following JSON is sent in the request body.

// {
//   "registrationNumber": "ABC1234"
// }

loo_Json = create oleobject
// Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
li_rc = loo_Json.ConnectToNewObject("Chilkat.JsonObject")

loo_Json.UpdateString("registrationNumber","ABC1234")

loo_Http.SetRequestHeader("Accept","application/json")
loo_Http.SetRequestHeader("x-api-key","supplied API key")

loo_Resp = loo_Http.PostJson3("https://driver-vehicle-licensing.api.gov.uk/vehicle-enquiry/v1/vehicles","application/json",loo_Json)
if loo_Http.LastMethodSuccess = 0 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_Http
    destroy loo_Json
    return
end if

loo_SbResponseBody = create oleobject
// Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
li_rc = loo_SbResponseBody.ConnectToNewObject("Chilkat.StringBuilder")

loo_Resp.GetBodySb(loo_SbResponseBody)
loo_JResp = create oleobject
// Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
li_rc = loo_JResp.ConnectToNewObject("Chilkat.JsonObject")

loo_JResp.LoadSb(loo_SbResponseBody)
loo_JResp.EmitCompact = 0

Write-Debug "Response Body:"
Write-Debug loo_JResp.Emit()

li_RespStatusCode = loo_Resp.StatusCode
Write-Debug "Response Status Code = " + string(li_RespStatusCode)
if li_RespStatusCode >= 400 then
    Write-Debug "Response Header:"
    Write-Debug loo_Resp.Header
    Write-Debug "Failed."
    destroy loo_Resp
    destroy loo_Http
    destroy loo_Json
    destroy loo_SbResponseBody
    destroy loo_JResp
    return
end if

destroy loo_Resp

// Sample JSON response:
// (Sample code for parsing the JSON response is shown below)

// {
//   "artEndDate": "2025-02-28",
//   "co2Emissions": 135,
//   "colour": "BLUE",
//   "engineCapacity": 2494,
//   "fuelType": "PETROL",
//   "make": "ROVER",
//   "markedForExport": false,
//   "monthOfFirstRegistration": "2004-12",
//   "motStatus": "No details held by DVLA",
//   "registrationNumber": "ABC1234",
//   "revenueWeight": 1640,
//   "taxDueDate": "2007-01-01",
//   "taxStatus": "Untaxed",
//   "typeApproval": "N1",
//   "wheelplan": "NON STANDARD",
//   "yearOfManufacture": 2004,
//   "euroStatus": "EURO 6 AD",
//   "realDrivingEmissions": "1",
//   "dateOfLastV5CIssued": "2016-12-25"
// }

// Sample code for parsing the JSON response...
// Use the following online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON

ls_ArtEndDate = loo_JResp.StringOf("artEndDate")
li_Co2Emissions = loo_JResp.IntOf("co2Emissions")
ls_Colour = loo_JResp.StringOf("colour")
li_EngineCapacity = loo_JResp.IntOf("engineCapacity")
ls_FuelType = loo_JResp.StringOf("fuelType")
ls_Make = loo_JResp.StringOf("make")
li_MarkedForExport = loo_JResp.BoolOf("markedForExport")
ls_MonthOfFirstRegistration = loo_JResp.StringOf("monthOfFirstRegistration")
ls_MotStatus = loo_JResp.StringOf("motStatus")
ls_RegistrationNumber = loo_JResp.StringOf("registrationNumber")
li_RevenueWeight = loo_JResp.IntOf("revenueWeight")
ls_TaxDueDate = loo_JResp.StringOf("taxDueDate")
ls_TaxStatus = loo_JResp.StringOf("taxStatus")
ls_TypeApproval = loo_JResp.StringOf("typeApproval")
ls_Wheelplan = loo_JResp.StringOf("wheelplan")
li_YearOfManufacture = loo_JResp.IntOf("yearOfManufacture")
ls_EuroStatus = loo_JResp.StringOf("euroStatus")
ls_RealDrivingEmissions = loo_JResp.StringOf("realDrivingEmissions")
ls_DateOfLastV5CIssued = loo_JResp.StringOf("dateOfLastV5CIssued")


destroy loo_Http
destroy loo_Json
destroy loo_SbResponseBody
destroy loo_JResp