Class SemanticEquality

Compare Expression nodes for "computes the same value", i.e. ignore ColumnReference and parentheses.

Inheritance

Object

SemanticEquality

Implements

IEqualityComparer<Expression>

Inherited Members

Object.Equals(Object)

Object.Equals(Object, Object)

Object.GetHashCode()

Object.GetType()

Object.MemberwiseClone()

Object.ReferenceEquals(Object, Object)

Object.ToString()

Namespace: Mangrove.MetricSetTransformers

Assembly: MetricSetTransformers.dll

Syntax

public class SemanticEquality : IEqualityComparer<Expression>

Constructors

SemanticEquality(Int32, Boolean)

Create an instance of this class which only checks equality (and only generates hash codes) for Expression objects following the syntax tree up to depth, ignoring ColumnReference nodes and parentheses.

Declaration

public SemanticEquality(int depth = 2147483647, bool unwrapTables = true)

Parameters

Type	Name	Description
Int32	depth	If this is 0, only expression properties will be compared.
Boolean	unwrapTables	If this is true, ColumnReference nodes across tables will be treated as identical.

Methods

Equals(Expression, Expression)

Declaration

public bool Equals(Expression x, Expression y)

Parameters

Type	Name	Description
Expression	x
Expression	y

Returns

Type	Description
Boolean

GetHashCode(Expression)

Declaration

public int GetHashCode(Expression obj)

Parameters

Type	Name	Description
Expression	obj

Returns

Type	Description
Int32

Implements

System.Collections.Generic.IEqualityComparer<T>

Extension Methods

ObjectExtensions.EventId(Object)