Flat and Delimited File Export

Content Type: Module
Categories: Import/Export


Exporting fixed length and delimited files (e.g. csv) made easy. This module take all the java coding out of your hands and allows you to easily export your data from a microflow.


Name: Flat & Delimited File Export

Author: Erwin 't Hoen (https://www.bluetale.nl)

Type: Module

Package filename: FlatFileExport_v5.0.mpk


The flat & delimited file export module allows you to export data from your model to fixed length and/or delimited files without the need for java programming.

The module has been setup in such a way that with a little modeling and some configuration your are able to export data from a microflow.

Typical usage scenario

When you need to export data to a delimited or fixed length file from a microflow this module is for you

Let's say you have a Person, Location and Organisation entity in your model

The Person is related to the organisation and location in a 1:1 fashion, so the person 'knows' the organisation and the location, Now you have the need to create a delimited or fixed length file based on the person, the related organisation and related location for some interface to an external system.

The data can be exported directly from your Person entity or alternatively you create an interface table that will hold the data (for logging purposes for example), by creating a n:1 relation between the non-persistant ExportBatch entity and your entity holding the data and create a microflow that will perform the action . Seems difficult? Don't worry an example is provide in the module!

Now you finished your modeling and it's time to configure what needs to be exported.


  • Export fixed length and delimited files
  • No java work needed, only modeling and configuration
  • Export direct attributes
  • Export related attributes
  • Full logging in the runtime
  • Padding (left/right)
  • Optionally add headers to the exported data
  • Allow the module to write the result to a server directory or alternatively allow the user to download the export file
  • Allow sorting of your exported data


Only referenced objects that are related with the 1 side on the entity data to be exported can be used for exporting.


See the general instructions under How to Install.


Mendix 9.24.10 environment

The MxModelReflection module needs to be installed



  • Connect the ExportConfiguration_Overview form in the implementation folder to your navigation
  • Assign module permissions (Configurator & Export_User) to the appropriate user roles
  • Synchronize your model in the MxModelReflection module

Testing (optional):

  1. Connect the overview forms in the example/forms folder to your navigation
  2. Synchronize your MxModelReflection module (make sure to select the FlatFileExport module to be synchronized)
  3. Create at least 1 record from the TestExportEntity_Overview form and if you want to test the reference export create a record from the TestExportRefEntity_Overview and connect the record to the one created earlier.
  4. Create your configuration from the ExportConfiguration_Overview and use the name TEST (for details on the configuration setup see the Configuration Setup section)
  5. Try the export200 or export selected buttons on the TestExportEntity_Overview form to get the data exported
  6. If you want to try to export some more records there is a function on the TestExportEntity_Overview form that will create 200 copies of the record you created.
  7. To add your own sorting, create a microflow with a single list as input with the name 'LIST_TO_SORT'. The input should be the same entity as you are exporting. Add a list operation activity in the microflow. Make sure the sorted list is returned by the microflow. Sync your model reflection module, use the apply sorting option in the configuration, and select the created sorting microflow. Examples are provided in the example folder.

Configuration setup:


  • Name: Unique name for the configuration, to be used in the calling microflow (see example)
  • File Type: A choice of delimited or fixed length files
  • Delimiter: The delimiting character to be used when exporting delimited files
  • Download Result: This option will create a FileDocument that can be downloaded by the user.
  • Directory: The directory where the resulting files are saved on the server (only available when Download Result is false!) If the result should be stored in the tmp directory just add a / in the field, if a sub directory is needed fill the field with //
  • File encoding: Options are UTF-8 and Cp1252(default) depending on your needs
  • File Name: The name for the files as ., files will be created with a unique name based on the time of exporting
  • Use Headers: This option will allow the configurator to define headers for the resulting export. Definition of these headers is done in the Column Definitions
  • Select Entity: Select the entity that will holds the data to be exported
  • Apply sorting: Allows you to select the microflow used for sorting your data

After saving the data entered above you will be able to define the columns to be exported


  • Column Number: Auto generated number for the column indicating the position in the resulting file
  • Column Header: The header to be used in the export file for this column
  • Pad: choice of padding the data:
  • No Padding
  • Left Padding
  • Right Padding
  • Pad with: When padding left or rigth this field holds the character used in the padding
  • Length: the length of the data to be exported and optionally padded
  • Is Reference: Select this if the attribute you are defining is stored in a related entity
  • Select Attribute: Select one of the attributes from the entity definined for exporting (see General section)
  • Select Reference: If the attribute you are defining is stored in a related entity this allow you to choose the relation to be used for the related entity
  • Select Reference Attribute: Select the attribute from the related entity
  • Date Time Format: If the attribute selected is a datetime field you need to supply the definition with a format to be used for the datetime value (default is: dd-MM-yyyy HH:mm:ss)

Ready your own entities for exporting:

To allow your own entities to be exported with a microflow follow the next steps.

  1. Create a referenceset type relation from the FlatFileExport.ExportBatch entity to your entity (the N is on the ExportBatch side, see example)
  2. Synchronize the MxModelReflection module
  3. Create your Export Configuration
  4. Create a microflow (1) that retrieves a list of your entity's data (the data to be exported), creates a new exportbatch record with the correct reference set with the list and call the export microflow (see example in the module)
  5. Create a second microflow (2) that can be copied from the module's execution folder (ExportFlow) and change the first action so that your configuration name and defined entity are used)
  6. Connect your microflow (1) to a button or other microflow for execution from the client and test your export.


Version: 7.0.0
Framework Version: 9.24.10
Release Notes: This release introduces the option to sort the exported data by means of a microflow, providing easy control by creating your own sorting action.
Version: 6.0.0
Framework Version: 9.24.10
Release Notes: Upgrade of the module to Mendix version 9.24.10 Minor change in the test functionality.
Version: 4.1.0
Framework Version: 7.23.9
Release Notes: * Upgrade to Mendix 7.23.9 * Fixed issue when using column headers the setting was not propagated to the column definition * Changed overview of column definitions to show padding as image * Added displayattributes for selected attributes and referenced attributes to cleanup the overview (to convert your current setup use the microflow CONV_DisplayAttributes) * Replaced the help text widget by the bootstrap tooltip widget