Class ConstantReplacerVisitor

This Expression Visitor will search for a specific constant value and then replace it with a supplied one

Inheritance
System.Object
ExpressionVisitor
ConstantReplacerVisitor
Inherited Members
System.Object.ToString()
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
Namespace: ImageVault.Client.Query.Parser
Assembly: ImageVault.Client.dll
Syntax
public class ConstantReplacerVisitor : ExpressionVisitor

Constructors

ConstantReplacerVisitor(Type)

Initializes a new instance of the ConstantReplacerVisitor class.

Declaration
public ConstantReplacerVisitor(Type type)
Parameters
Type Name Description
System.Type type

Methods

ReplaceConstant(Expression, Object)

Use this to replace the constant of the specified type

Declaration
public Expression ReplaceConstant(Expression expression, object item)
Parameters
Type Name Description
System.Linq.Expressions.Expression expression

The System.Linq.Expressions.Expression to use
System.Object item

The item to replace the constant with
Returns
Type Description
System.Linq.Expressions.Expression

The new System.Linq.Expressions.Expression with the replaced constant
Exceptions
Type Condition
InvalidQueryException

If constant was not replaced.

VisitConstant(ConstantExpression)

Will inspect all constants and see if there is any matching constant that we will use to replace it with

Declaration
protected override Expression VisitConstant(ConstantExpression c)
Parameters
Type Name Description
System.Linq.Expressions.ConstantExpression c
Returns
Type Description
System.Linq.Expressions.Expression
Overrides
Exceptions
Type Condition
InvalidQueryException

If constant is present more than once.

Extension Methods