| PredicateExpression Methods |
The PredicateExpression type exposes the following members.
Methods| Name | Description | |
|---|---|---|
 | Add |
Adds an IPredicate implementing object to the PredicateExpression. This can be a Predicate derived class or a PredicateExpression.
If no object is present yet in the PredicateExpression, no operator is added, otherwise the object is added with an 'And'-operator.
|
| AddWithAnd |
Adds an IPredicate implementing object to the PredicateExpression with an 'And'-operator.
The object added can be a Predicate derived class or a PredicateExpression. If no objects are present yet in the PredicateExpression,
the operator is ignored.
|
| AddWithOr |
Adds an IPredicate implementing object to the PredicateExpression with an 'Or'-operator.
The object added can be a Predicate derived class or a PredicateExpression. If no objects are present yet in the PredicateExpression,
the operator is ignored.
|
| Clear |
Clears this instance.
|
| Equals | Determines whether the specified object is equal to the current object. (Inherited from Object.) |
 | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
| GetEnumerator |
Returns an enumerator that iterates through a collection.
|
| GetFrameworkElementsInPredicate |
Gets a list of all framework objects (fields, expression objects etc.) which are located in this IPredicate instance. E.g. a
FieldCompareValuePredicate will return a list with 1 IEntityFieldCore instance: the field to compare. If no framework elements are present in the
predicate, the base implementation is used, which returns an empty list. This routine is used to gather information for Linq queries.
(Overrides PredicateGetFrameworkElementsInPredicate.) |
| GetHashCode | Serves as the default hash function. (Inherited from Object.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| InterpretPredicate |
Interprets this predicate on the passed in entity
(Overrides PredicateInterpretPredicate(IEntityCore).) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| ReadAdditionalXmlData |
Reads the additional a derived type has from the reader's XML data. The reader is positioned at the 'predicate' element.
(Overrides PredicateReadAdditionalXmlData(XmlReader).) |
| ToQueryText |
Implements the IPredicate ToQueryText method. Retrieves a ready to use text representation of the contained PredicateExpression.
(Overrides PredicateToQueryText.) |
| ToQueryText(Boolean) |
Retrieves a ready to use text representation of the contained Predicate.
(Overrides PredicateToQueryText(Boolean).) |
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
| WriteAdditionalXmlData |
Writes the additional data a derived type has to the writer specified.
(Overrides PredicateWriteAdditionalXmlData(XmlWriter).) |
Extension Methods| Name | Description | |
|---|---|---|
 | And |
Returns a new PredicateExpression with contents: predicate AND toAdd
(Defined by PredicateExtensionMethods.) |
| AndNot |
Returns a new PredicateExpression with contents: predicate AND NOT toAdd
(Defined by PredicateExtensionMethods.) |
| As |
Specifies an alias for the value returned by the predicate when the predicate is used in a projection. Equal to:
Functions.IIF(predicate, true, false).As(alias)
(Defined by PredicateExtensionMethods.) |
| AsBooleanValue |
Returns the predicate wrapped in a CASE WHEN (predicate) THEN 1 ELSE 0 END construct (as a function call expression) so the predicate can be
used as a real boolean value in other places than the Where clause.
(Defined by PredicateExtensionMethods.) |
| IsEmpty |
Determines whether the specified predicate or predicate expression is empty. A null passed in is also considered empty
(Defined by ORMClassExtensions.) |
| Or |
Returns a new PredicateExpression with contents: predicate OR toAdd
(Defined by PredicateExtensionMethods.) |
| OrNot |
Returns a new PredicateExpression with contents: predicate OR NOT toAdd
(Defined by PredicateExtensionMethods.) |
| ToValue |
Placeholder method which is used in a Select(lambda func) projection inside the lambda to specify the type of the result of the passed in predicate.
Use this method only when specifying a predicate in the projection lambda.
(Defined by PredicateExtensionMethods.) |
Explicit Interface Implementations| Name | Description | |
|---|---|---|
  | IEnumerableIPredicateExpressionElementGetEnumerator |
Returns an enumerator that iterates through the collection.
|
| IXmlSerializableGetSchema |
This method is reserved and should not be used. When implementing the IXmlSerializable interface, you should return null (Nothing in Visual Basic) from this method, and instead, if specifying a custom schema is required, apply the XmlSchemaProviderAttribute to the class.
(Inherited from Predicate.) |
| IXmlSerializableReadXml |
Generates an object from its XML representation.
(Inherited from Predicate.) |
| IXmlSerializableWriteXml |
Converts an object into its XML representation.
(Inherited from Predicate.) |
| IPredicateReadXml |
Deserializes the predicate data on the xml reader into a predicate instance
(Inherited from Predicate.) |
| IPredicateWriteXml |
Serializes the predicate as xml to the writer specified.
(Inherited from Predicate.) |
| IPredicateInterpretInterpret |
Interprets the implementing class on the entity passed in.
(Inherited from Predicate.) |
See Also