(SQL Server) Load JSON Array from HTTP Response Body

Demonstrates how to load the HTTP response body directly into a JsonArray.

Note: This example requires Chilkat v9.5.0.89 or greater because it uses the GetBodyJarr method. Prior to v9.5.0.89, and application would need to first copy the HTTP response body to a Chilkat StringBuilder object by calling GetBodySb, and then load the JsonArray by calling JsonArray.LoadSb.

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

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @http int
    -- Use "Chilkat_9_5_0.Http" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Http', @http OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @success int

    DECLARE @resp int
    EXEC sp_OAMethod @http, 'PText', @resp OUT, 'GET', 'https://www.chilkatsoft.com/exampledata/sampleArray.json', '', '', '', 0, 0
    EXEC sp_OAGetProperty @http, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 = 0
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @http
        RETURN
      END

    -- A JSON array is JSON that begins with "[" and ends with "]"
    DECLARE @jarr int
    -- Use "Chilkat_9_5_0.JsonArray" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.JsonArray', @jarr OUT

    -- If we wish to transfer (instead of copy) the JSON from the HttpResponse to the JsonArray, then add the keyword "TakeResponseBody" to UncommonOptions
    -- This could save memory for extremely large JSON responses.
    EXEC sp_OASetProperty @resp, 'UncommonOptions', 'TakeResponseBody'

    EXEC sp_OAMethod @resp, 'GetBodyJarr', @success OUT, @jarr

    EXEC sp_OAMethod @jarr, 'Emit', @sTmp0 OUT
    PRINT @sTmp0

    -- Note: If UncommonOptions contained "TakeResponseBody", then the response BodyStr will now be empty:

    PRINT '----'
    EXEC sp_OAGetProperty @resp, 'BodyStr', @sTmp0 OUT
    PRINT @sTmp0

    EXEC @hr = sp_OADestroy @resp


    EXEC @hr = sp_OADestroy @http
    EXEC @hr = sp_OADestroy @jarr


END
GO