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Xbase++

Retrieve a Single Contact

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Demonstrates how to retrieve a single contact (by contactId) for the Google Contacts API.

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LOCAL nSuccess
LOCAL oJsonToken
LOCAL oGAuth
LOCAL oRest
LOCAL nBAutoReconnect
LOCAL oSbPath
LOCAL nNumReplacements
LOCAL oSbResponseBody
LOCAL oXml
LOCAL cEmailAddress

nSuccess := 0

//  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

oJsonToken := CreateObject("Chilkat.JsonObject")
nSuccess := oJsonToken:LoadFile("qa_data/tokens/googleContacts.json")
IF (nSuccess != 1)
    ? "Failed to load googleContacts.json"
    oJsonToken:destroy()
    RETURN
ENDIF

oGAuth := CreateObject("Chilkat.AuthGoogle")
oGAuth:AccessToken := oJsonToken:StringOf("access_token")

oRest := CreateObject("Chilkat.Rest")

//  Connect using TLS.
nBAutoReconnect := 1
nSuccess := oRest:Connect("www.google.com", 443, 1, nBAutoReconnect)

//  Provide the authentication credentials (i.e. the access token)
oRest:SetAuthGoogle(oGAuth)

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

//  To retrieve the contact, send the following:

//  	GET /m8/feeds/contacts/default/full/{contactId}
//  	GData-Version: 3.0

oRest:AddHeader("GData-Version", "3.0")

oSbPath := CreateObject("Chilkat.StringBuilder")
oSbPath:Append("/m8/feeds/contacts/default/full/{contactId}")
//  Get the contact having contactId = "7b1c7b6409e718a0"
nNumReplacements := oSbPath:Replace("{contactId}", "7b1c7b6409e718a0")

oSbResponseBody := CreateObject("Chilkat.StringBuilder")
nSuccess := oRest:FullRequestNoBodySb("GET", oSbPath:GetAsString(), oSbResponseBody)
IF (nSuccess != 1)
    ? oRest:LastErrorText
    oJsonToken:destroy()
    oGAuth:destroy()
    oRest:destroy()
    oSbPath:destroy()
    oSbResponseBody:destroy()
    RETURN
ENDIF

//  A successful response will have a status code equal to 200.
IF (oRest:ResponseStatusCode != 200)
    ? "response status code = " + Str(oRest:ResponseStatusCode)
    ? "response status text = " + oRest:ResponseStatusText
    ? "response header: " + oRest:ResponseHeader
    ? "response body: " + oSbResponseBody:GetAsString()
    oJsonToken:destroy()
    oGAuth:destroy()
    oRest:destroy()
    oSbPath:destroy()
    oSbResponseBody:destroy()
    RETURN
ENDIF

//  If the 200 response was received, then the contacts XML is contained
//  in the response body.
oXml := CreateObject("Chilkat.Xml")
oXml:LoadSb(oSbResponseBody, 0)

//  See below for a sample response body.
oXml:SaveXml("qa_output/google_contact.xml")

//  Now let's parse the XML...
? "title: " + oXml:GetChildContent("title")

cEmailAddress := oXml:ChilkatPath("gd:email|(address)")
IF (oXml:LastMethodSuccess == 1)
    ? "email address: " + cEmailAddress
ENDIF

//  The response body XML looks something like this:

//  	<?xml version="1.0" encoding="UTF-8" ?>
//  	<entry gd:etag="&quot;R3kzezVSLit7I2A9XRFaFE8DQAU.&quot;" xmlns="http://www.w3.org/2005/Atom" xmlns:batch="http://schemas.google.com/gdata/batch" xmlns:gContact="http://schemas.google.com/contact/2008" xmlns:gd="http://schemas.google.com/g/2005">
//  	    <id>http://www.google.com/m8/feeds/contacts/support%40chilkatcloud.com/base/7b1c7b6409e718a0</id>
//  	    <updated>2016-11-18T00:41:56.783Z</updated>
//  	    <app:edited xmlns:app="http://www.w3.org/2007/app">2016-11-18T00:41:56.783Z</app:edited>
//  	    <category scheme="http://schemas.google.com/g/2005#kind" term="http://schemas.google.com/contact/2008#contact" />
//  	    <title>Chilkat Cloud</title>
//  	    <link rel="http://schemas.google.com/contacts/2008/rel#photo" type="image/*" href="https://www.googleapis.com/m8/feeds/photos/media/support%40chilkatcloud.com/7b1c7b6409e718a0" gd:etag="&quot;fgVhPls4Sit7I2BWHUlTWkQMKHUZKHkkaiw.&quot;" />
//  	    <link rel="self" type="application/atom+xml" href="https://www.googleapis.com/m8/feeds/contacts/support%40chilkatcloud.com/full/7b1c7b6409e718a0" />
//  	    <link rel="edit" type="application/atom+xml" href="https://www.googleapis.com/m8/feeds/contacts/support%40chilkatcloud.com/full/7b1c7b6409e718a0" />
//  	    <gd:name>
//  	        <gd:fullName>Chilkat Cloud</gd:fullName>
//  	        <gd:givenName>Chilkat</gd:givenName>
//  	        <gd:familyName>Cloud</gd:familyName>
//  	    </gd:name>
//  	    <gd:email rel="http://schemas.google.com/g/2005#other" address="support@chilkatcloud.com" primary="true" />
//  	    <gContact:groupMembershipInfo deleted="false" href="http://www.google.com/m8/feeds/groups/support%40chilkatcloud.com/base/6" />
//  	</entry>

oJsonToken:destroy()
oGAuth:destroy()
oRest:destroy()
oSbPath:destroy()
oSbResponseBody:destroy()
oXml:destroy()