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DataFlex Examples

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(DataFlex) Find a Label ID by Name

Lookup the ID of a GMail label by the label name.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoHttp
    String sUserId
    String sUrl
    Variant vSb
    Handle hoSb
    Handle hoJson
    Variant vJRecord
    Handle hoJRecord
    String sTemp1
    Integer iTemp1
    Boolean bTemp1

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

    Get Create (RefClass(cComChilkatHttp)) To hoHttp
    If (Not(IsComObjectCreated(hoHttp))) Begin
        Send CreateComObject of hoHttp
    End
    Set ComAuthToken Of hoHttp To "GMAIL-ACCESS-TOKEN"

    Move "me" To sUserId
    Get ComSetUrlVar Of hoHttp "userId" sUserId To iSuccess

    Move "https://www.googleapis.com/gmail/v1/users/{$userId}/labels" To sUrl

    // Get the list of GMail labels as JSON.
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSb
    If (Not(IsComObjectCreated(hoSb))) Begin
        Send CreateComObject of hoSb
    End
    Get pvComObject of hoSb to vSb
    Get ComQuickGetSb Of hoHttp sUrl vSb To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoHttp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get Create (RefClass(cComChilkatJsonObject)) To hoJson
    If (Not(IsComObjectCreated(hoJson))) Begin
        Send CreateComObject of hoJson
    End
    Get pvComObject of hoSb to vSb
    Get ComLoadSb Of hoJson vSb To iSuccess
    Set ComEmitCompact Of hoJson To False
    Get ComEmit Of hoJson To sTemp1
    Showln sTemp1

    Get ComLastStatus Of hoHttp To iTemp1
    If (iTemp1 <> 200) Begin
        Showln "Failed."
        Procedure_Return
    End

    // The JSON returned looks like this:
    // {
    //   "labels": [
    //     {
    //       "id": "Label_5",
    //       "name": "QA",
    //       "messageListVisibility": "show",
    //       "labelListVisibility": "labelShow",
    //       "type": "user"
    //     },
    //     {
    //       "id": "Label_21",
    //       "name": "[Gmail]/testFolder",
    //       "type": "user"
    //     },
    //     {
    //       "id": "CATEGORY_PERSONAL",
    //       "name": "CATEGORY_PERSONAL",
    //       "type": "system"
    //     },
    // 	...

    // The name of the label is generally known because it's what we visually see.
    // The id is what we need to get.  Assuming the name is unique,
    // find the JSON record having name=<desired name>
    // For example...
    Get ComFindRecord Of hoJson "labels" "name" "QA" False To vJRecord
    If (IsComObject(vJRecord)) Begin
        Get Create (RefClass(cComChilkatJsonObject)) To hoJRecord
        Set pvComObject Of hoJRecord To vJRecord
    End
    Get ComLastMethodSuccess Of hoJson To bTemp1
    If (bTemp1 = True) Begin
        Get ComStringOf Of hoJRecord "id" To sTemp1
        Showln "The id of QA is: " sTemp1
        Send Destroy of hoJRecord
    End

    Get ComFindRecord Of hoJson "labels" "name" "[Gmail]/testFolder" False To vJRecord
    If (IsComObject(vJRecord)) Begin
        Get Create (RefClass(cComChilkatJsonObject)) To hoJRecord
        Set pvComObject Of hoJRecord To vJRecord
    End
    Get ComLastMethodSuccess Of hoJson To bTemp1
    If (bTemp1 = True) Begin
        Get ComStringOf Of hoJRecord "id" To sTemp1
        Showln "The id of [Gmail]/testFolder is: " sTemp1
        Send Destroy of hoJRecord
    End

    Get ComFindRecord Of hoJson "labels" "name" "questions" False To vJRecord
    If (IsComObject(vJRecord)) Begin
        Get Create (RefClass(cComChilkatJsonObject)) To hoJRecord
        Set pvComObject Of hoJRecord To vJRecord
    End
    Get ComLastMethodSuccess Of hoJson To bTemp1
    If (bTemp1 = True) Begin
        Get ComStringOf Of hoJRecord "id" To sTemp1
        Showln "The id of questions is: " sTemp1
        Send Destroy of hoJRecord
    End

    // Output:

    // The id of QA is: Label_5
    // The id of [Gmail]/testFolder is: Label_21
    // The id of questions is: Label_43


End_Procedure

 

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