I would like to describe one interesting property for ADF BC attribute. This property is called Storage. There are two possible values: row (default) and collection. By default attribute value is saved in row storage, but alternatively it can be saved in collection storage. ADF BC implements collection storage using map which comes from session scope. This allows to keep value even between ADF BC requests, this is ideal for transient attributes.
Sample application (ADFBCCheckboxApp.zip) implements VO transient attribute to keep checkbox value: VO is configured for Range Paging support. While user will navigate through UI table pages – VO range paging will re-execute and this will force VO replace rows (which will result in loosing transient attribute values): Read the complete article here.
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