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Oracle ADF 11gR2 Development Beginner's Guide
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The Active Data Service (ADS) framework is a server-side push framework that allows UI information to be refreshed, with the value as a particular interval of time. The ADF Faces components that support the Active Data Service framework are activeCommandButton, activeImage, activeOutputText, table, tree, and treeTable.

The ADS framework consists of the following interfaces:
ActiveDataModel: This interface is responsible for starting and stopping active data. This will keep track of the active data's event ID as well.
Event Manager: This interface listens and raises a push event for the active data. It manages and retrieves the active data.
Push Service: This interface transmits the active data to the client for a refresh.
Active Data Manager: This interface delivers the active data to the client. It handles multiple client interfaces using a shared channel.
Active Data Proxy: This interface listens to the data change event and delegates...
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