(Lianja) Outlook -- List Selected Fields in Messages

Demonstrates how to list the messages in a particular Outlook mailbox folder, but selects particular fields to be returned.

This uses the OData $select system query option. See OData System Query Option $select for general information.

Also see OData URL Conventions for information about $select and other query options.

Note: This example requires Chilkat v9.5.0.68 or greater.

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Chilkat Lianja Extension

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

loHttp = createobject("CkHttp")

// Use your previously obtained access token here:
// See the following examples for getting an access token:
//    Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
//    Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
//    Refresh Access Token (Azure AD v2.0 Endpoint).
//    Refresh Access Token (Azure AD Endpoint).

loHttp.AuthToken = "MICROSOFT_GRAPH_ACCESS_TOKEN"

loSbResponse = createobject("CkStringBuilder")

// In this example, we'd like to get the messages in the folder "/Inbox",
// but we must specify the corresponding folder_id.  The best way to do this is to create
// a local map of folderPaths-to-folderIds.
// This example does it:  Create Outlook Folder Map)
loHtFolderMap = createobject("CkHashtable")
loSbMap = createobject("CkStringBuilder")
loSbMap.LoadFile("qa_data/outlook/folderMap.xml","utf-8")
loHtFolderMap.AddFromXmlSb(loSbMap)

// Get the ID for the "/Inbox" folder:
lcFolderId = loHtFolderMap.LookupStr("/Inbox")
if (loHtFolderMap.LastMethodSuccess <> .T.) then
    ? "Folder ID not found"
    release loHttp
    release loSbResponse
    release loHtFolderMap
    release loSbMap
    return
endif

loHttp.SetUrlVar("folder_id",lcFolderId)

// Send the request to list the messages, returning only the subject and from address.
llSuccess = loHttp.QuickGetSb("https://graph.microsoft.com/v1.0/me/mailFolders/{$folder_id}/messages?$select=subject,from",loSbResponse)
if ((llSuccess <> .T.) and (loHttp.LastStatus = 0)) then
    ? loHttp.LastErrorText
    release loHttp
    release loSbResponse
    release loHtFolderMap
    release loSbMap
    return
endif

loJson = createobject("CkJsonObject")
loJson.LoadSb(loSbResponse)
loJson.EmitCompact = .F.

? "Status code = " + str(loHttp.LastStatus)
if (loHttp.LastStatus <> 200) then
    ? loJson.Emit()
    ? "Failed."
endif

? loJson.Emit()

// In my test case, the raw JSON returned is shown below.
// Iterate over the messages to get information about each..

i = 0
lnNumMessages = loJson.SizeOfArray("value")
do while i < lnNumMessages
    loJson.I = i

    // This is the id for the email message.
    // For REST API calls that require particular email message id, this is what should be used..
    lcMessageId = loJson.StringOf("value[i].id")
    ? "id: " + lcMessageId
    ? "From Name: " + loJson.StringOf("value[i].from.emailAddress.name")
    ? "From Addr: " + loJson.StringOf("value[i].from.emailAddress.address")
    ? "Subject: " + loJson.StringOf("value[i].subject")
    ? "--"

    i = i + 1
enddo

// The output of the above loop:
// 
// 	id: AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAAM6Jj1oAAAA=
// 	From Name: Chilkat Software
// 	From Addr: admin@chilkat.io
// 	Subject: This is an example email from chilkat.io
// 	--
// 	id: AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAAM6Jj1kAAAA=
// 	From Name: Chilkat Support
// 	From Addr: chilkat.support@gmail.com
// 	Subject: Hello from GMail
// 	--
// 	id: AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAAHrLra8AAAA=
// 	From Name: Microsoft Office 365
// 	From Addr: MicrosoftOffice365@email.office.com
// 	Subject: The latest for you in Office 365
// 	--
// 	id: AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAADLHd_EAAAA=
// 	From Name: Amazon Web Services
// 	From Addr: no-reply-aws@amazon.com
// 	Subject: Amazon SES Address Verification Request in region US West (Oregon)
// 	--
// 	id: AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAADLHd_AAAAA=
// 	From Name: Amazon Web Services
// 	From Addr: no-reply-aws@amazon.com
// 	Subject: Amazon SES Address Verification Request in region US West (Oregon)
// 	--
// 	id: AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAAAG6l8UAAAA=
// 	From Name: Microsoft
// 	From Addr: msa@communication.microsoft.com
// 	Subject: Updates to our terms of use and privacy statement
// 	--
// 

// ------------------------------------------------------
// This is the raw JSON response:

// {
//   "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('me')/mailFolders('AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA')/messages(subject,from)",
//   "value": [
//     {
//       "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AADOpwfo\"",
//       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAAM6Jj1oAAAA=",
//       "subject": "This is an example email from chilkat.io",
//       "from": {
//         "emailAddress": {
//           "name": "Chilkat Software",
//           "address": "admin@chilkat.io"
//         }
//       }
//     },
//     {
//       "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AADOpwfn\"",
//       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAAM6Jj1kAAAA=",
//       "subject": "Hello from GMail",
//       "from": {
//         "emailAddress": {
//           "name": "Chilkat Support",
//           "address": "chilkat.support@gmail.com"
//         }
//       }
//     },
//     {
//       "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AAB63d8O\"",
//       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAAHrLra8AAAA=",
//       "subject": "The latest for you in Office 365",
//       "from": {
//         "emailAddress": {
//           "name": "Microsoft Office 365",
//           "address": "MicrosoftOffice365@email.office.com"
//         }
//       }
//     },
//     {
//       "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AAA1jyl7\"",
//       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAADLHd_EAAAA=",
//       "subject": "Amazon SES Address Verification Request in region US West (Oregon)",
//       "from": {
//         "emailAddress": {
//           "name": "Amazon Web Services",
//           "address": "no-reply-aws@amazon.com"
//         }
//       }
//     },
//     {
//       "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AAA1jyl6\"",
//       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAADLHd_AAAAA=",
//       "subject": "Amazon SES Address Verification Request in region US West (Oregon)",
//       "from": {
//         "emailAddress": {
//           "name": "Amazon Web Services",
//           "address": "no-reply-aws@amazon.com"
//         }
//       }
//     },
//     {
//       "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AAAGt5YG\"",
//       "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAAAG6l8UAAAA=",
//       "subject": "Updates to our terms of use and privacy statement",
//       "from": {
//         "emailAddress": {
//           "name": "Microsoft",
//           "address": "msa@communication.microsoft.com"
//         }
//       }
//     }
//   ]
// }


release loHttp
release loSbResponse
release loHtFolderMap
release loSbMap
release loJson