Interface IDelegationTarget

Indicates that a class can analyze and possibly rewrite an expression tree containing itself. The expression tree will map the delegation target as a parameter expression.

Namespace: Reaqtor.QueryEngine

Assembly: Reaqtor.QueryEngine.Interfaces.dll

Syntax

public interface IDelegationTarget

Methods

CanDelegate(ParameterExpression, Expression)

Checks whether the tree should be rewritten.

Declaration

bool CanDelegate(ParameterExpression node, Expression expression)

Parameters

Type	Name	Description
System.Linq.Expressions.ParameterExpression	node	The parameter expression representing this delegation target.
System.Linq.Expressions.Expression	expression	The whole subexpression on which to perform the analysis.

Returns

Type	Description
System.Boolean	True if the tree should be rewritten, false otherwise.

Delegate(ParameterExpression, Expression)

Rewrites a tree.

Declaration

Expression Delegate(ParameterExpression node, Expression expression)

Parameters

Type	Name	Description
System.Linq.Expressions.ParameterExpression	node	The parameter expression representing this delegation target.
System.Linq.Expressions.Expression	expression	The whole subexpression on which to perform the rewrite.

Returns

Type	Description
System.Linq.Expressions.Expression	The rewritten tree.