Release 10.1A: OpenEdge Development:
ADM and SmartObjects

> ## SmartLinks

> An important feature of the ADM is the messaging system it provides: you use objects called SmartLinks to create communication paths between pairs of SmartObjects. The ADM includes the following SmartLink types:

> - Container — Links a containing object to an object that it contains.

> - Navigation — Links an object that provides a navigation interface to an object that supplies a query through which to navigate.

> - TableIO — Links an object that provides a record-modification interface to an object through which to enter changes.

> - Page — Links an object that provides a page-selection interface to an object that manages the hiding and viewing of pages.

> - PageN — Links an object that manages the hiding and viewing of a numbered set of pages to the SmartObjects on a specific page.

> - GroupAssign — Links an object that manages a record to an object that manages a related record or another view of the same record.

> - Data — Links an object that finds records to a visualization object or to another object that manages records.

> - Update — Links a visualization object to a SmartDataObject for the purpose of submitting modifications to the data.

> - Commit — Links a Commit SmartPanel to a SmartDataObject (for committing multiple updates in a single transaction).

> - Filter — Links a SmartFilter to an object that directly or indirectly supplies a query to filter (SmartDataObject or SmartDataBrowser).

> When you connect objects with a SmartLink, the SmartObject from which the link originates is the source object, and the object to which it connects is the target object.

> The ADM implements SmartLinks using the Progress 4GL general `PUBLISH`/`SUBSCRIBE` event mechanism. For basic information on `PUBLISH`/`SUBSCRIBE`, see OpenEdge Development: Progress 4GL Reference . For more information on linking in the ADM and detailed descriptions of specific SmartLinks, see Chapter 3, " SmartLinks."

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