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The EOInterface Framework

Package:
com.apple.client.eocontrol (com.apple.client.eointerface)

com.apple.yellow.eointerface (com.apple.yellow.eointerface)

Introduction

The EOInterface framework defines one of the layers of the Enterprise Objects Framework architecture-the interface layer.

The relationship between user interface objects and enterprise objects is managed by an instance of the EODisplayGroup class. EODisplayGroups are used by EOAssociation objects to mediate between enterprise objects and the user interface. EOAssociations link a single user interface object to one ore more class properties (keys) of the objects managed by an EODisplayGroup. The properties' values are displayed in the association's user interface object.

In the Interface layer, EOAssociation objects "observe" EODisplayGroups to make sure that the data displayed in the user interface remains consistent with enterprise object data. EODisplayGroups interact with a data source, which supplies them with enterprise objects.

The interface layer's associations are listed in the following table:

Association	com.apple.yellow.eointerface	com.apple.client.eointerface	Description
EOActionAssociation	Yes	Yes	Allows you to set up an interface object, such as a button, to send a message to the objects selected in the association's display group when the interface object is acted on
EOActionCellAssociation	Yes	No	The default association class for use with NSActionCells
EOActionInsertionAssociation	Yes	Yes	Inserts objects from one display group into another.
EOAssociation	Yes	Yes	Defines the mechanism that transfers values between EODisplayGroups and the user interface of an application.
EOColumnAssociation	Yes	No	Cooperates with an EOTableViewAssociation to display values in a column of an NSTableView
EOComboBoxAssociation	Yes	Yes	Displays an attribute or to-one relationship value in a combo box
EOControlAssociation	Yes	No	The default EOAssociation subclass for use with NSControl objects
EODetailSelectionAssociation	Yes	No	Binds two EODisplayGroups together through a relationship, so that the destination display group acts as an editor for that relationship.
EOGenericControlAssociation	Yes	No	the abstract superclass of EOControlAssociation and EOActionCellAssociation.
EOMasterCopyAssociation	Yes	No	Synchronizes two EODisplayGroups that share the same data source but have different qualifiers.
EOMasterDetailAssociation	Yes	Yes	Binds one EODisplayGroup (the detail) to a relationship in another (the master), so that the detail display group contains the destination objects for the object selected in the master.
EOMasterPeerAssociation	Yes	No	Binds two EODisplayGroups together in a master-detail relationship, where the detail EODisplayGroup shows the destination objects for the relationship of the master EODisplayGroup.
EOMatrixAssociation	Yes	No	Allows you to populate an NSMatrix's cells.
EOPickTextAssociation	Yes	No	Allows the user to perform a similarity search based on whole or partial values.
EOPopUpAssociation	Yes	No	Displays an attribute or to-one relationship value in an NSPopUpButton
EORadioMatrixAssociation	Yes	No	Displays a string or an integer in an NSMatrix.
EORecursiveBrowserAssociation	Yes	No	The default association for use with a multi-column NSBrowser.
EOTableAssociation	No	Yes	Associates a display group with a Swing JTable.
EOTableColumnAssociation	No	Yes	Associates a single attribute of all enterprise objects in a display group with a Swing JTable TableColumn.
EOTableViewAssociation	Yes	No	Manages the individual EOColumnAssociations between an NSTableView (Application Kit) and an EODisplayGroup.
EOTextAssociation	Yes	Yes	Displays a plain or rich text attribute in an NSText object (Application Kit) or an EOTextField, EOTextArea, or EOFormCell (com.apple.client.eointerface) by binding the text object to a string or NSData attribute.