Possible null pointer

This rule identifies potential null pointer issues within expressions and actions in Mendix microflows. Null pointer exceptions can occur when a nullable object or attribute is accessed without first ensuring that it is not null. This rule helps prevent runtime errors by prompting developers to validate or handle potentially null values appropriately before referencing them within microflows.

Example:

Consider a microflow action that accesses an attribute from an object without checking for null:

```plaintext Retrieve $myObject from database ``` If myObject is empty, a NullPointerException will be thrown here: ```plaintext $myObject/Attribute ``` To mitigate this issue, ensure that myObject is not null before accessing its attributes within the microflow:

```plaintext if $myObject != empty then $myObject/Attribute else 'myObject is null, handle appropriately' ```

Impact:

Neglecting to handle null pointers within microflows can lead to unexpected application behavior or crashes at runtime. By adhering to this rule, developers enhance the reliability and stability of their Mendix applications by preemptively addressing potential null pointer exceptions within microflows.