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View this topic on docs.devexpress.com (Learn more)

PersistentCriteriaEvaluationBehavior Enumeration

Lists values that specify how filter criteria are evaluated within a transaction.

Namespace:DevExpress.Xpo
Assembly:DevExpress.Xpo.v19.1.dll

Expanded Public Members

Show: Inherited
  Name Description
Public field BeforeTransaction Criteria are evaluated on the data store side. Objects created within a transaction (Cache), are not processed by the criteria. Objects modified within a transaction, are not processed. Instead, their images, stored in the data store, are processed by the criteria.
Public field InTransaction All objects (Data Store and Cache) are processed by the filter criteria.
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Expanded Remarks

Values listed by this enumeration specify which objects are processed when a criteria is being evaluated.

Example

Creating a new XPCollection with the criteriaEvaluationBehavior parameter set to BeforeTransaction doesn't add objects that have been created or changed within a transaction.

To allow these objects to be added to the collection, the criteriaEvaluationBehavior parameter must be set to InTransaction. Note, this significantly slows down the application's performance.

Expanded See Also

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