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ProjectionExpression Class

Special expression class which is used in expression tree handling to represent a projection. During the tree processing, this node gains more and more information.
Inheritance Hierarchy

Namespace:  SD.LLBLGen.Pro.LinqSupportClasses.ExpressionClasses
Assembly:  SD.LLBLGen.Pro.ORMSupportClasses (in SD.LLBLGen.Pro.ORMSupportClasses.dll) Version: 5.6.0.0 (5.6.19.0117)
Syntax
public class ProjectionExpression : CommonExpression, 
	IRelationPropagator

The ProjectionExpression type exposes the following members.

Constructors
  NameDescription
Public methodProjectionExpression(Type)
Initializes a new instance of the SetExpression class.
Public methodProjectionExpression(Type, LambdaExpression)
Initializes a new instance of the ProjectionExpression class.
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Properties
  NameDescription
Public propertyCanReduce
Indicates that the node can be reduced to a simpler node. If this returns true, Reduce() can be called to produce the reduced form.
(Inherited from Expression.)
Public propertyNodeType
Gets the node type of this Expression.
(Inherited from CommonExpression.)
Public propertyProjectionLambda
Gets or sets the projection lambda, which is the source for the data gathered in this projection.
Public propertyProjectionToUse
Gets or sets the projection to use for the query in LLBLGen Pro.
Public propertyRelationsToUse
Relations collection for the relations to traverse to be able to fulfill the projection. These relations are from the projection specification itself.
Public propertyType
Gets the static type of the expression that this Expression represents.
(Inherited from CommonExpression.)
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Methods
  NameDescription
Protected methodAccept
Dispatches to the specific visit method for this node type. For example, MethodCallExpression calls the VisitMethodCall(MethodCallExpression).
(Inherited from Expression.)
Public methodAddRelation(IDynamicRelation)
Adds the relation passed in to the RelationsToUse collection.
Public methodAddRelation(IEntityRelation)
Adds the relation passed in to the RelationsToUse collection.
Public methodAddRelations
Adds the relations passed in. Relations are added to this expression if a field in this projection is in a related entity and the relations contained inside this projection are required to access the field.
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Protected methodFinalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Public methodHandle
Handles this instance using the specified handler.
(Overrides CommonExpressionHandle(ScopeHandlerBase).)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Public methodReduce
Reduces this node to a simpler expression. If CanReduce returns true, this should return a valid expression. This method can return another node which itself must be reduced.
(Inherited from Expression.)
Public methodReduceAndCheck
Reduces this node to a simpler expression. If CanReduce returns true, this should return a valid expression. This method can return another node which itself must be reduced.
(Inherited from Expression.)
Public methodReduceExtensions
Reduces the expression to a known node type (that is not an Extension node) or just returns the expression if it is already a known type.
(Inherited from Expression.)
Public methodToString
Returns a textual representation of the Expression.
(Overrides ExpressionToString.)
Protected methodVisitChildren
Reduces the node and then calls the visitor delegate on the reduced expression. The method throws an exception if the node is not reducible.
(Inherited from Expression.)
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See Also