(Lianja) Retrieve a Single Contact

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

Chilkat Lianja Extension Download Chilkat Lianja Extension

// 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

loJsonToken = createobject("CkJsonObject")
llSuccess = loJsonToken.LoadFile("qa_data/tokens/googleContacts.json")
if (llSuccess <> .T.) then
    ? "Failed to load googleContacts.json"
    release loJsonToken
    return
endif

loGAuth = createobject("CkAuthGoogle")
loGAuth.AccessToken = loJsonToken.StringOf("access_token")

loRest = createobject("CkRest")

// Connect using TLS.
llBAutoReconnect = .T.
llSuccess = loRest.Connect("www.google.com",443,.T.,llBAutoReconnect)

// Provide the authentication credentials (i.e. the access token)
loRest.SetAuthGoogle(loGAuth)

// ----------------------------------------------
// 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

loRest.AddHeader("GData-Version","3.0")

loSbPath = createobject("CkStringBuilder")
loSbPath.Append("/m8/feeds/contacts/default/full/{contactId}")
// Get the contact having contactId = "7b1c7b6409e718a0"
lnNumReplacements = loSbPath.Replace("{contactId}","7b1c7b6409e718a0")

loSbResponseBody = createobject("CkStringBuilder")
llSuccess = loRest.FullRequestNoBodySb("GET",loSbPath.GetAsString(),loSbResponseBody)
if (llSuccess <> .T.) then
    ? loRest.LastErrorText
    release loJsonToken
    release loGAuth
    release loRest
    release loSbPath
    release loSbResponseBody
    return
endif

// A successful response will have a status code equal to 200.
if (loRest.ResponseStatusCode <> 200) then
    ? "response status code = " + str(loRest.ResponseStatusCode)
    ? "response status text = " + loRest.ResponseStatusText
    ? "response header: " + loRest.ResponseHeader
    ? "response body: " + loSbResponseBody.GetAsString()
    release loJsonToken
    release loGAuth
    release loRest
    release loSbPath
    release loSbResponseBody
    return
endif

// If the 200 response was received, then the contacts XML is contained
// in the response body.
loXml = createobject("CkXml")
loXml.LoadSb(loSbResponseBody,.F.)

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

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

lcEmailAddress = loXml.ChilkatPath("gd:email|(address)")
if (loXml.LastMethodSuccess = .T.) then
    ? "email address: " + lcEmailAddress
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>


release loJsonToken
release loGAuth
release loRest
release loSbPath
release loSbResponseBody
release loXml