(SQL Server) Page Through All Contacts

Demonstrates how to page through the entire list of Google Contacts.

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

    -- --------------------------------------------------------------------------------------------------------
    -- Note: The code for setting up the Chilkat REST object and making the initial connection can be done once.
    -- Once connected, the REST object may be re-used for many REST API calls.
    -- (It's a good idea to put the connection setup code in a separate function/subroutine.)
    -- --------------------------------------------------------------------------------------------------------

    -- It is assumed we previously obtained an OAuth2 access token.
    -- This example loads the JSON access token file 
    -- saved by this example: Get Google Contacts OAuth2 Access Token

    DECLARE @jsonToken int
    -- Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @jsonToken OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @success int
    EXEC sp_OAMethod @jsonToken, 'LoadFile', @success OUT, 'qa_data/tokens/googleContacts.json'
    IF @success <> 1
      BEGIN

        PRINT 'Failed to load googleContacts.json'
        EXEC @hr = sp_OADestroy @jsonToken
        RETURN
      END

    DECLARE @gAuth int
    -- Use "Chilkat_9_5_0.AuthGoogle" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.AuthGoogle', @gAuth OUT

    EXEC sp_OAMethod @jsonToken, 'StringOf', @sTmp0 OUT, 'access_token'
    EXEC sp_OASetProperty @gAuth, 'AccessToken', @sTmp0

    DECLARE @rest int
    -- Use "Chilkat_9_5_0.Rest" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Rest', @rest OUT

    -- Connect using TLS.
    DECLARE @bAutoReconnect int
    SELECT @bAutoReconnect = 1
    EXEC sp_OAMethod @rest, 'Connect', @success OUT, 'www.google.com', 443, 1, @bAutoReconnect

    -- Provide the authentication credentials (i.e. the access token)
    EXEC sp_OAMethod @rest, 'SetAuthGoogle', @success OUT, @gAuth

    -- ----------------------------------------------
    -- OK, the REST connection setup is completed..
    -- ----------------------------------------------

    DECLARE @startIndex int
    SELECT @startIndex = 1
    DECLARE @maxResults int
    SELECT @maxResults = 25
    -- The totalResults will get updated with the correct value in the 1st loop iteration..
    DECLARE @totalResults int
    SELECT @totalResults = 100
    -- To retrieve the contacts in pages of 25 each, we need to send the following for each page.

    -- 	GET /m8/feeds/contacts/default/full?max-results=25&start-index=<startIndex>
    -- 	GData-Version: 3.0

    DECLARE @sbMaxResults int
    -- Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbMaxResults OUT

    EXEC sp_OAMethod @sbMaxResults, 'AppendInt', @success OUT, @maxResults
    DECLARE @sbStartIndex int
    -- Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbStartIndex OUT

    DECLARE @loopIteration int
    SELECT @loopIteration = 0
    WHILE @startIndex <= @totalResults
      BEGIN

        EXEC sp_OAMethod @sbStartIndex, 'Clear', NULL
        EXEC sp_OAMethod @sbStartIndex, 'AppendInt', @success OUT, @startIndex

        EXEC sp_OAMethod @rest, 'ClearAllHeaders', @success OUT
        EXEC sp_OAMethod @rest, 'ClearAllQueryParams', @success OUT
        EXEC sp_OAMethod @rest, 'AddHeader', @success OUT, 'GData-Version', '3.0'
        EXEC sp_OAMethod @sbStartIndex, 'GetAsString', @sTmp0 OUT
        EXEC sp_OAMethod @rest, 'AddQueryParam', @success OUT, 'start-index', @sTmp0
        EXEC sp_OAMethod @sbMaxResults, 'GetAsString', @sTmp0 OUT
        EXEC sp_OAMethod @rest, 'AddQueryParam', @success OUT, 'max-results', @sTmp0

        DECLARE @sbResponseBody int
        -- Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
        EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbResponseBody OUT

        EXEC sp_OAMethod @rest, 'FullRequestNoBodySb', @success OUT, 'GET', '/m8/feeds/contacts/default/full', @sbResponseBody
        IF @success <> 1
          BEGIN
            EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
            PRINT @sTmp0
            EXEC @hr = sp_OADestroy @jsonToken
            EXEC @hr = sp_OADestroy @gAuth
            EXEC @hr = sp_OADestroy @rest
            EXEC @hr = sp_OADestroy @sbMaxResults
            EXEC @hr = sp_OADestroy @sbStartIndex
            EXEC @hr = sp_OADestroy @sbResponseBody
            RETURN
          END

        -- A successful response will have a status code equal to 200.
        EXEC sp_OAGetProperty @rest, 'ResponseStatusCode', @iTmp0 OUT
        IF @iTmp0 <> 200
          BEGIN

            EXEC sp_OAGetProperty @rest, 'ResponseStatusCode', @iTmp0 OUT
            PRINT 'response status code = ' + @iTmp0

            EXEC sp_OAGetProperty @rest, 'ResponseStatusText', @sTmp0 OUT
            PRINT 'response status text = ' + @sTmp0

            EXEC sp_OAGetProperty @rest, 'ResponseHeader', @sTmp0 OUT
            PRINT 'response header: ' + @sTmp0

            EXEC sp_OAMethod @sbResponseBody, 'GetAsString', @sTmp0 OUT
            PRINT 'response body: ' + @sTmp0
            EXEC @hr = sp_OADestroy @jsonToken
            EXEC @hr = sp_OADestroy @gAuth
            EXEC @hr = sp_OADestroy @rest
            EXEC @hr = sp_OADestroy @sbMaxResults
            EXEC @hr = sp_OADestroy @sbStartIndex
            EXEC @hr = sp_OADestroy @sbResponseBody
            RETURN
          END

        -- If the 200 response was received, then the contacts XML is contained
        -- in the response body.
        DECLARE @xml int
        -- Use "Chilkat_9_5_0.Xml" for versions of Chilkat < 10.0.0
        EXEC @hr = sp_OACreate 'Chilkat.Xml', @xml OUT

        EXEC sp_OAMethod @xml, 'LoadSb', @success OUT, @sbResponseBody, 0

        -- Now let's parse the XML...

        -- Get the the total number of results, the start index, and the items per page.
        -- We'll likely NOT get the full list, but will instead get the 1st page.
        EXEC sp_OAMethod @xml, 'GetChildIntValue', @totalResults OUT, 'openSearch:totalResults'
        DECLARE @startIndex2 int
        EXEC sp_OAMethod @xml, 'GetChildIntValue', @startIndex2 OUT, 'openSearch:startIndex'
        DECLARE @itemsPerPage int
        EXEC sp_OAMethod @xml, 'GetChildIntValue', @itemsPerPage OUT, 'openSearch:itemsPerPage'

        PRINT 'totalResults = ' + @totalResults

        PRINT 'startIndex = ' + @startIndex2

        PRINT 'itemsPerPage = ' + @itemsPerPage

        -- Iterate over each contact.
        DECLARE @numEntries int
        EXEC sp_OAMethod @xml, 'NumChildrenHavingTag', @numEntries OUT, 'entry'
        DECLARE @i int
        SELECT @i = 0
        WHILE @i < @numEntries
          BEGIN
            EXEC sp_OASetProperty @xml, 'I', @i

            PRINT @loopIteration * @maxResults + @i + 1 + ' ----'

            EXEC sp_OAMethod @xml, 'GetChildContent', @sTmp0 OUT, 'entry[i]|title'
            PRINT 'title: ' + @sTmp0

            DECLARE @idUrl nvarchar(4000)
            EXEC sp_OAMethod @xml, 'GetChildContent', @idUrl OUT, 'entry[i]|id'

            PRINT 'id: ' + @idUrl

            DECLARE @fullName nvarchar(4000)
            EXEC sp_OAMethod @xml, 'ChilkatPath', @fullName OUT, 'entry[i]|gd:name|gd:fullName|*'
            EXEC sp_OAGetProperty @xml, 'LastMethodSuccess', @iTmp0 OUT
            IF @iTmp0 = 1
              BEGIN

                PRINT 'fullName: ' + @fullName
              END

            DECLARE @emailAddress nvarchar(4000)
            EXEC sp_OAMethod @xml, 'ChilkatPath', @emailAddress OUT, 'entry[i]|gd:email|(address)'
            EXEC sp_OAGetProperty @xml, 'LastMethodSuccess', @iTmp0 OUT
            IF @iTmp0 = 1
              BEGIN

                PRINT 'email address: ' + @emailAddress
              END

            -- Find the photo link and check to see if this contact has a photo.
            DECLARE @xLink int
            EXEC sp_OAMethod @xml, 'GetChildWithAttr', @xLink OUT, 'link', 'rel', 'http://schemas.google.com/contacts/2008/rel#photo'
            EXEC sp_OAGetProperty @xml, 'LastMethodSuccess', @iTmp0 OUT
            IF @iTmp0 = 1
              BEGIN
                -- Get the photo etag.
                DECLARE @bHasPhoto int
                EXEC sp_OAMethod @xLink, 'HasAttribute', @bHasPhoto OUT, 'gd:etag'
                IF @bHasPhoto = 1
                  BEGIN

                    PRINT 'This contact has a photo.'
                  END
                EXEC @hr = sp_OADestroy @xLink

              END

            SELECT @i = @i + 1
          END

        SELECT @startIndex = @startIndex + @maxResults
        SELECT @loopIteration = @loopIteration + 1
      END

    EXEC @hr = sp_OADestroy @jsonToken
    EXEC @hr = sp_OADestroy @gAuth
    EXEC @hr = sp_OADestroy @rest
    EXEC @hr = sp_OADestroy @sbMaxResults
    EXEC @hr = sp_OADestroy @sbStartIndex
    EXEC @hr = sp_OADestroy @sbResponseBody
    EXEC @hr = sp_OADestroy @xml


END
GO