How does an Aggregate filter the Items it returns?

An Aggregate in OutSystems is a powerful tool used to fetch data from a database, and it filters items based on predefined criteria. When filtering items, the Aggregate uses predefined filters that allow developers to set specific conditions for the data being retrieved. This can involve comparing entity attributes to static values, checking for certain conditions, or using logical operators.

Predefined filters streamline the process of data retrieval by making it straightforward for developers to specify exactly which records they need based on given conditions. This functionality is crucial for efficient data handling, ensuring that applications only work with the necessary data, thereby optimizing performance and resource usage.

Although there may be components that involve global settings, attributes from selected entities, or dynamic runtime expressions, these do not serve as the primary method for filtering items within an Aggregate. Instead, the emphasis is on utilizing the established criteria set by the developer through the use of predefined filters.