QueryRootExpression Class

Reference

Definition

Namespace:: Microsoft.EntityFrameworkCore.Query

Assembly:: Microsoft.EntityFrameworkCore.dll

Package:: Microsoft.EntityFrameworkCore v5.0.0

Package:: Microsoft.EntityFrameworkCore v6.0.0

Package:: Microsoft.EntityFrameworkCore v7.0.0

Package:: Microsoft.EntityFrameworkCore v8.0.0

Important

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An expression that represents a query root in query expression.

This type is typically used by database providers (and other extensions). It is generally not used in application code.

public class QueryRootExpression : System.Linq.Expressions.Expression, Microsoft.EntityFrameworkCore.Query.IPrintableExpression

public abstract class QueryRootExpression : System.Linq.Expressions.Expression, Microsoft.EntityFrameworkCore.Query.IPrintableExpression

type QueryRootExpression = class
    inherit Expression
    interface IPrintableExpression

Public Class QueryRootExpression
Inherits Expression
Implements IPrintableExpression

Public MustInherit Class QueryRootExpression
Inherits Expression
Implements IPrintableExpression

Inheritance: Expression
QueryRootExpression

Derived: Microsoft.EntityFrameworkCore.Query.EntityQueryRootExpression

Microsoft.EntityFrameworkCore.Query.InlineQueryRootExpression

Microsoft.EntityFrameworkCore.Query.ParameterQueryRootExpression

Implements: IPrintableExpression

Remarks

See Implementation of database providers and extensions and How EF Core queries work for more information and examples.

Constructors

QueryRootExpression(IAsyncQueryProvider, IEntityType)	Creates a new instance of the QueryRootExpression class with associated query provider.
QueryRootExpression(IAsyncQueryProvider, Type)	Creates a new instance of the QueryRootExpression class with associated query provider.
QueryRootExpression(IEntityType)	Creates a new instance of the QueryRootExpression class without any query provider.
QueryRootExpression(Type)	Creates a new instance of the EntityQueryRootExpression class without any query provider.

Properties

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.
ElementType	The element type represented by this query root.
EntityType	The entity type reprenseted by this query root.
NodeType	Gets the node type of this Expression.
QueryProvider	The query provider associated with this query root.
Type	Gets the static type of the expression that this Expression represents.

Methods

DetachQueryProvider()	Detaches the associated query provider from this query root expression.
Equals(Object)	System.Linq.Expressions.Expression.Equals(System.Object)
GetHashCode()	System.Linq.Expressions.Expression.GetHashCode
Print(ExpressionPrinter)	Creates a printable string representation of the given expression using ExpressionPrinter.
UpdateEntityType(IEntityType)	Updates entity type associated with this query root with equivalent optimized version.
VisitChildren(ExpressionVisitor)	Reduces the node and then calls the visitor delegate on the reduced expression. The method throws an exception if the node is not reducible.

Explicit Interface Implementations

IPrintableExpression.Print(ExpressionPrinter)

Creates a printable string representation of the given expression using ExpressionPrinter.

Applies to

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