Exporting the data from data entities through X++ code – Murali Ravkanti

public static void main(Args _args)
    {
        #DMF
        Query						  query;
        DMFEntityName				  entityName = "Inventory movement journal headers and lines";
        SharedServiceUnitFileID		  fileId;
        List						  xsltFileList = new List(Types::String);
        boolean						  isGenerated = false;
        VLSAzureSMBFileStorageHandler azureFileStorageProcessor;
        CustParameters				  custParameters = CustParameters::find();
        
        // Update query
        query = new query(dmfutil::getdefaultqueryforentity(entityname));
        querybuilddatasource qbds = query.datasourcetable(tableNum(InventInventoryMovementJournalEntryEntity));

        // Export file
		// Definition group will be created if it is not existed
        DMFDefinitionGroupName definitionGroupName = 'Invent journal entity';

        try
        {
            DMFEntityExporter exporter = new DMFEntityExporter();

            //There are optional parameters also added
            fileId = exporter.exportToFile(
            entityName,//Entity label
            definitionGroupName,//Definition group to reuse
            '',//ExecutionId group to reuse,
            'CSV',//Source format to export in
            'VLSInventJournal',//Specify the field group fields to include in export.
            query.pack(),//Query criteria to export records
            curExt(),//Default curExt()
            null,//List of XSLT files
            true,//showErrorMessages
            false);//showSuccessMessages

            if (fileId != '')
            {
                //Get Azure blob url from guid
                str downloadUrl = DMFDataPopulation::getAzureBlobReadUrl(str2Guid(fileId));

                System.Uri uri = new System.Uri(downloadUrl);
                str fileExt;
                //Get file extension
                if (uri != null)
                {
                    fileExt = System.IO.Path::GetExtension(uri.LocalPath);
                }

                Filename filename = strFmt('InventJournal%1',fileExt);
                System.IO.Stream stream = File::UseFileFromURL(downloadUrl);
                //Send the file to user
                //File::SendFileToUser(stream, filename);

                DMFDefinitionGroup::find(definitionGroupName, true).delete();

                isGenerated = true;

                azureFileStorageProcessor   = new VLSAzureSMBFileStorageHandler();
                azureFileStorageProcessor.parmAccountName(custParameters.VLSOutboundAccountName);
                azureFileStorageProcessor.parmAccountKey(custParameters.VLSOutboundAccessKey);
                azureFileStorageProcessor.parmFileShareName(custParameters.VLSOutboundFileShareName);
                azureFileStorageProcessor.parmDestinationFileShareName(custParameters.VLSOutboundFileShareName);
                azureFileStorageProcessor.parmErrorFileShareName(custParameters.VLSOutboundFileShareName);
                azureFileStorageProcessor.openConnection();
                azureFileStorageProcessor.resetToRootDirectory();
                azureFileStorageProcessor.setDirectory(custParameters.VLSOutboundInProcess);

                azureFileStorageProcessor.uploadFromStream(stream, filename);
                info(strFmt("File %1 has been moved to Azure storage folder", filename));
			 }
            else
            {
                throw error("The file was not generated succefully.");
            }
        }
        catch
        {
            
            throw error("Data export execution failed.");
        }
    }