Logic

Aggregate

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Fetch data using an optimized query. In Web Applications you can use an Aggregate to fetch data from the server database, while in Mobile Apps you can use an Aggregate to fetch data from the server database or from the local storage.

Properties

Name	Description	Mandatory	Default value	Observations
Name	Identifies an element in the scope where it is defined, like a screen, action, or module.	Yes
Description	Text that documents the element.			Useful for documentation purpose. The maximum size of this property is 2000 characters.
Timeout	Maximum time in seconds to wait for the Aggregate to return data before triggering a Communication Exception. Overrides the default timeout defined on the module.			If there is no value specified in this property, the timeout corresponds to the "Default query timeout" parameter specified in the Platform Server Configuration Tool. Property not available in client actions.
Cache in Minutes	Maximum time content or results are stored in memory. When undefined, nothing is cached.			Property not available in client actions.
Max. Records	Maximum number of records fetched from the database.			If undefined, the default value is: – In widgets: StartIndex + LineCount + 1; – Exporting to Excel: No limit.
Events
On After Fetch	Action executed after the aggregate fetches data from the data source.

Runtime Properties

Name	Description	Read Only	Type	Observations
List	Collection of records returned by the performed query.		Record List
Count	Number of records returned by the Count query.		Long Integer
IsDataFetched	True when data has been fetched from the database and is ready to be used.	Yes	Boolean
HasFetchError	True when there is an error during data fetch due to a server error or communication timeout.	Yes	Boolean

See Also