(Go) 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.

This example applies to: Exchange Online | Office 365 | Hotmail.com | Live.com | MSN.com | Outlook.com | Passport.com

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

    http := chilkat.NewHttp()

    // 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).

    http.SetAuthToken("MICROSOFT_GRAPH_ACCESS_TOKEN")

    sbResponse := chilkat.NewStringBuilder()

    // 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)
    htFolderMap := chilkat.NewHashtable()
    sbMap := chilkat.NewStringBuilder()
    sbMap.LoadFile("qa_data/outlook/folderMap.xml","utf-8")
    htFolderMap.AddFromXmlSb(sbMap)

    // Get the ID for the "/Inbox" folder:
    folderId := htFolderMap.LookupStr("/Inbox")
    if htFolderMap.LastMethodSuccess() != true {
        fmt.Println("Folder ID not found")
        http.DisposeHttp()
        sbResponse.DisposeStringBuilder()
        htFolderMap.DisposeHashtable()
        sbMap.DisposeStringBuilder()
        return
    }

    http.SetUrlVar("folder_id",*folderId)

    // Send the request to list the messages, returning only the subject and from address.
    success := http.QuickGetSb("https://graph.microsoft.com/v1.0/me/mailFolders/{$folder_id}/messages?$select=subject,from",sbResponse)
    if (success != true) && (http.LastStatus() == 0) {
        fmt.Println(http.LastErrorText())
        http.DisposeHttp()
        sbResponse.DisposeStringBuilder()
        htFolderMap.DisposeHashtable()
        sbMap.DisposeStringBuilder()
        return
    }

    json := chilkat.NewJsonObject()
    json.LoadSb(sbResponse)
    json.SetEmitCompact(false)

    fmt.Println("Status code = ", http.LastStatus())
    if http.LastStatus() != 200 {
        fmt.Println(*json.Emit())
        fmt.Println("Failed.")
    }

    fmt.Println(*json.Emit())

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

    i := 0
    numMessages := json.SizeOfArray("value")
    for i < numMessages {
        json.SetI(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..
        messageId := json.StringOf("value[i].id")
        fmt.Println("id: ", *messageId)
        fmt.Println("From Name: ", *json.StringOf("value[i].from.emailAddress.name"))
        fmt.Println("From Addr: ", *json.StringOf("value[i].from.emailAddress.address"))
        fmt.Println("Subject: ", *json.StringOf("value[i].subject"))
        fmt.Println("--")

        i = i + 1
    }

    // 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"
    //         }
    //       }
    //     }
    //   ]
    // }

    http.DisposeHttp()
    sbResponse.DisposeStringBuilder()
    htFolderMap.DisposeHashtable()
    sbMap.DisposeStringBuilder()
    json.DisposeJsonObject()