Package org.eclipse.emf.cdo.spi.common.model

Interface InternalCDOClassInfo.PersistenceFilter

Enclosing interface:
InternalCDOClassInfo
public static interface InternalCDOClassInfo.PersistenceFilter
Encapsulation 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.

  • Method Summary

    Modifier and Type
    Method
    Description
    Object
    getPersistableValue(EObject owner, Object value)
    Get a subset or other transformation of the specified value of a persistable feature, based on its dependencies.

  • Method Details

    • getPersistableValue

      Object getPersistableValue(EObject owner, Object value)
      Get a subset or other transformation of the specified value of 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 the owner's feature.
      Returns:
      the transformed value to persist. It should be a collection (possibly empty) if the value is a collection, or a scalar (possibly null) if the value is a scalar