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- Enclosing interface:
- InternalCDOClassInfo
public static interface InternalCDOClassInfo.PersistenceFilterEncapsulation of a rule for filtering the persistent values of a feature in some model element. Some models (such as UML's Activity metaclass) require partial persistence of features, persisting a subset of the values in a feature that are also in some other feature (the filtering feature). Other models may apply other transformations to features that require partial or otherwise custom persistence rules.
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Method Summary
Methods Modifier and Type Method and Description ObjectgetPersistableValue(EObject owner, Object value)Get a subset or other transformation of the specifiedvalueof a persistable feature, based on its dependencies.
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Method Detail
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getPersistableValue
Object getPersistableValue(EObject owner, Object value)
Get a subset or other transformation of the specifiedvalueof a persistable feature, based on its dependencies.- Parameters:
owner- an object this filter is to be applied to.value- the value (which may be a collection) of theowner's feature.- Returns:
- the transformed value to persist. It should be a collection (possibly empty)
if the
valueis a collection, or a scalar (possiblynull) if thevalueis a scalar
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