Use Callbacks to Customize Requirement Import Behavior
You can use callbacks to execute code when you import requirements from third-party tools
or when you update requirements. The
PreImportFcn callback executes
before you import requirements and the
PostImportFcn callback executes
after you import the requirements. You can use these callbacks to customize import
Assign Code to Callbacks
You can assign code to the
PostImportFcn callbacks by using the Requirements
Editor or at the MATLAB® command line.
Assign Code to Callbacks by Using the Requirements Editor
To use the Requirements Editor to assign code to the
In the Requirements Editor, click Import.
In the Importing Requirements dialog, set Document type to the third-party tool that you are importing requirements from.
Next to Document location, click Browse and select the requirement file, document, module, or other requirement container.
Apply your desired import settings. For more information, see Import Requirements from Third-Party Applications.
In the Importing Requirements dialog box, expand the Callbacks section.
Select the PreImportFcn or PostImportFcn tab.
Enter your code in the box. You can enter code or the name of a MATLAB script that contains your code.
Assign Code to Callbacks Programmatically
To assign code to callbacks programmatically:
In MATLAB, select the Home tab, then click New Script.
In the script, enter the code that you want the callback to execute.
Select the Editor tab, then click Save. Enter a name for the script, then click Save.
getPostImportFcn. You can change the code assigned to the callbacks by using
Customize Requirement Import Behavior
You can use the code assigned to callbacks to execute commands before and after you
import requirements. For example, you can use the
callback to customize your import options or use the
callback to specify property values of imported requirements.
Customize the Pre-Import Behavior
You can use the
PreImportFcn callback to specify how
Requirements Toolbox™ imports requirements from different third-party tools. Use
slreq.getCurrentImportOptions in the callback to return one of these
objects, depending on the third-party tool:
You can modify this object in the callback code to change how Requirements Toolbox imports the requirements.
For example, you can specify the mapping file to use when you import ReqIF™ files. Modify this example code to specify the full file path of your
mapping file and assign the code to the
importOptions = slreq.getCurrentImportOptions; importOptions.MappingFile = "C:\Users\jdoe\Documents\myMappingFile.xml";
Customize the Post-Import Behavior
You can use the
PostImportFcn callback to execute code that
modifies requirements after the import completes.
For example, to specify property values of the imported requirements in the
PostImportFcn callback, use
slreq.getCurrentObject to get a handle to the Import node, then use
slreq.Reference methods to get handles to the imported requirements.
Then, use dot notation to set the property values. For more information, see Access Property Values. This example code shows how to get handles to the child referenced requirements
under the current import
topRef = slreq.getCurrentObject; refs = find(topRef);
IndexNumberproperties to customize requirement index numbering. For more information, see Customize Requirement Index Numbering. For an example, see Import Requirements from a Microsoft Excel Document.