Property broker runtime components
The property broker runtime comprises of a generic wrapper portlet, which is used to wrap each portlet enabled for cooperation, as well as a broker component. The wrapper portlet is only used for IBM portlets, and not for standard portlets. These components also interface with the portal core runtime. The purpose of the wrapper is to intercept calls to the application portlet and interface with the broker appropriately, to transparently register actions supported by the portlet, and to initiate data transfer from source to target portlets using the property broker. The wrapper is packaged in each cooperative portlet's WAR file.
In the case of standard portlets, the function of the wrapper is provided through a portlet filter which is part of the runtime component and not the WAR file. The broker centrally maintains a repository of actions and properties on each portlet, performs source and target matches at runtime using this information, and generates additional markup to allow users to trigger data transfers across portlets.
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