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 HierarchySystemObject
System.Linq.ExpressionsExpression
SD.LLBLGen.Pro.LinqSupportClasses.ExpressionClassesCommonExpression
SD.LLBLGen.Pro.LinqSupportClasses.ExpressionClassesProjectionExpression
System.Linq.ExpressionsExpression
SD.LLBLGen.Pro.LinqSupportClasses.ExpressionClassesCommonExpression
SD.LLBLGen.Pro.LinqSupportClasses.ExpressionClassesProjectionExpression
Namespace: SD.LLBLGen.Pro.LinqSupportClasses.ExpressionClasses
Assembly: SD.LLBLGen.Pro.ORMSupportClasses (in SD.LLBLGen.Pro.ORMSupportClasses.dll) Version: 5.4.0.0 (5.4.0)
SyntaxThe ProjectionExpression type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | ProjectionExpression(Type) |
Initializes a new instance of the SetExpression class.
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| ProjectionExpression(Type, LambdaExpression) |
Initializes a new instance of the ProjectionExpression class.
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Properties| Name | Description | |
|---|---|---|
 | CanReduce | 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.) |
| NodeType |
Gets the node type of this Expression.
(Inherited from CommonExpression.) |
| ProjectionLambda |
Gets or sets the projection lambda, which is the source for the data gathered in this projection.
|
| ProjectionToUse |
Gets or sets the projection to use for the query in LLBLGen Pro.
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| RelationsToUse |
Relations collection for the relations to traverse to be able to fulfill the projection. These relations are from the projection specification
itself.
|
| Type |
Gets the static type of the expression that this Expression represents.
(Inherited from CommonExpression.) |
Methods| Name | Description | |
|---|---|---|
 | Accept | Dispatches to the specific visit method for this node type. For example, MethodCallExpression calls the VisitMethodCall(MethodCallExpression). (Inherited from Expression.) |
| AddRelation(IDynamicRelation) |
Adds the relation passed in to the RelationsToUse collection.
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| AddRelation(IEntityRelation) |
Adds the relation passed in to the RelationsToUse collection.
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| AddRelations |
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.
|
| 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.) |
| GetHashCode | Serves as the default hash function. (Inherited from Object.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| Handle |
Handles this instance using the specified handler.
(Overrides CommonExpressionHandle(ScopeHandlerBase).) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| Reduce | 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.) |
| ReduceAndCheck | 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.) |
| ReduceExtensions | 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.) |
| ToString |
Returns a textual representation of the Expression.
(Overrides ExpressionToString.) |
| VisitChildren | 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.) |
See Also