SQL Server

Firebase POST - Pushing Data

See more Firebase Examples

Uses the POST method to append a new record at a particular location in the database. Firebase automatically generates the push ID and returns it in the response. The data used in this example is at Chilkat Firebase Pigs Database, and is shown here:

SQL Server

-- 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 @success int
    SELECT @success = 0

    -- Push a new record to a Firebase JSON database using the POST HTTP method.

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

    -- This example assumes a JWT authentication token, if required, has been previously obtained.
    -- See Get Firebase Access Token from JSON Service Account Private Key for sample code.

    -- Load the previously obtained Firebase access token into a string.
    DECLARE @fac int
    EXEC @hr = sp_OACreate 'Chilkat.FileAccess', @fac OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @accessToken nvarchar(4000)
    EXEC sp_OAMethod @fac, 'ReadEntireTextFile', @accessToken OUT, 'qa_data/tokens/firebaseToken.txt', 'utf-8'
    EXEC sp_OAGetProperty @fac, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @fac, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @fac
        RETURN
      END

    DECLARE @rest int
    EXEC @hr = sp_OACreate 'Chilkat.Rest', @rest OUT

    -- Make the initial connection (without sending a request yet).
    -- Once connected, any number of requests may be sent.  It is not necessary to explicitly
    -- call Connect before each request.  
    EXEC sp_OAMethod @rest, 'Connect', @success OUT, 'chilkat.firebaseio.com', 443, 1, 1
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @fac
        EXEC @hr = sp_OADestroy @rest
        RETURN
      END
    DECLARE @authGoogle int
    EXEC @hr = sp_OACreate 'Chilkat.AuthGoogle', @authGoogle OUT

    EXEC sp_OASetProperty @authGoogle, 'AccessToken', @accessToken
    EXEC sp_OAMethod @rest, 'SetAuthGoogle', @success OUT, @authGoogle

    -- Chilkat's sample data (pig-rescue data) is publicly readable at: https://chilkat.firebaseio.com/.json
    -- This data is publicly readable, but not writable.  You'll need to 
    -- run against your own database..

    -- We're going to add a new pig with just the name.
    DECLARE @pigRecord int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @pigRecord OUT

    EXEC sp_OAMethod @pigRecord, 'AppendString', @success OUT, 'name', 'William'

    -- The string content of the last arg passed is  {"name":"William"} 
    DECLARE @jsonResponse nvarchar(4000)
    EXEC sp_OAMethod @pigRecord, 'Emit', @sTmp0 OUT
    EXEC sp_OAMethod @rest, 'FullRequestString', @jsonResponse OUT, 'POST', '/pig-rescue/animal.json', @sTmp0
    EXEC sp_OAGetProperty @rest, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN
        -- Something happened in the communications (either no request was sent, or no response was received.
        -- (The Chilkat REST API also has lower-level methods where an app can send the request in one call,
        -- and then receive the response in another call.)
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @fac
        EXEC @hr = sp_OADestroy @rest
        EXEC @hr = sp_OADestroy @authGoogle
        EXEC @hr = sp_OADestroy @pigRecord
        RETURN
      END

    -- Check the response status code.   A 200 response status indicates success.
    EXEC sp_OAGetProperty @rest, 'ResponseStatusCode', @iTmp0 OUT
    IF @iTmp0 <> 200
      BEGIN
        EXEC sp_OAGetProperty @rest, 'ResponseStatusText', @sTmp0 OUT
        PRINT @sTmp0

        PRINT @jsonResponse

        PRINT 'Failed.'
        EXEC @hr = sp_OADestroy @fac
        EXEC @hr = sp_OADestroy @rest
        EXEC @hr = sp_OADestroy @authGoogle
        EXEC @hr = sp_OADestroy @pigRecord
        RETURN
      END

    -- Get the push ID generated by Firebase
    DECLARE @resp int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @resp OUT

    EXEC sp_OAMethod @resp, 'Load', @success OUT, @jsonResponse
    DECLARE @pushId nvarchar(4000)
    EXEC sp_OAMethod @resp, 'StringOf', @pushId OUT, 'name'

    PRINT 'Added record with push ID ' + @pushId

    PRINT 'Success.'

    EXEC @hr = sp_OADestroy @fac
    EXEC @hr = sp_OADestroy @rest
    EXEC @hr = sp_OADestroy @authGoogle
    EXEC @hr = sp_OADestroy @pigRecord
    EXEC @hr = sp_OADestroy @resp


END
GO