Table of Contents

Class PgRowValueExpression

Namespace
Npgsql.EntityFrameworkCore.PostgreSQL.Query.Expressions.Internal
Assembly
Npgsql.EntityFrameworkCore.PostgreSQL.dll

An expression that represents a PostgreSQL-specific row value expression in a SQL tree.

public class PgRowValueExpression : SqlExpression, IRelationalQuotableExpression, IPrintableExpression, IEquatable<PgRowValueExpression>
Inheritance
PgRowValueExpression
Implements
Inherited Members

Remarks

See the PostgreSQL docs for more information.

Constructors

PgRowValueExpression(IReadOnlyList<SqlExpression>, Type, RelationalTypeMapping?)

public PgRowValueExpression(IReadOnlyList<SqlExpression> values, Type type, RelationalTypeMapping? typeMapping = null)

Parameters

values IReadOnlyList<SqlExpression>
type Type
typeMapping RelationalTypeMapping

Properties

Values

The values of this PostgreSQL row value expression.

public virtual IReadOnlyList<SqlExpression> Values { get; }

Property Value

IReadOnlyList<SqlExpression>

Methods

Equals(PgRowValueExpression?)

Indicates whether the current object is equal to another object of the same type.

public virtual bool Equals(PgRowValueExpression? other)

Parameters

other PgRowValueExpression

An object to compare with this object.

Returns

bool

true if the current object is equal to the other parameter; otherwise, false.

Equals(object?)

Determines whether the specified object is equal to the current object.

public override bool Equals(object? obj)

Parameters

obj object

The object to compare with the current object.

Returns

bool

true if the specified object is equal to the current object; otherwise, false.

GetHashCode()

Serves as the default hash function.

public override int GetHashCode()

Returns

int

A hash code for the current object.

Print(ExpressionPrinter)

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

protected override void Print(ExpressionPrinter expressionPrinter)

Parameters

expressionPrinter ExpressionPrinter

The expression printer to use.

Quote()

Quotes the expression; that is, returns an expression that, when evaluated, would construct an expression identical to this one. Used to generate code for precompiled queries, which reconstructs this expression.

public override Expression Quote()

Returns

Expression

Update(IReadOnlyList<SqlExpression>)

Creates a new expression that is like this one, but using the supplied children. If all of the children are the same, it will return this expression.

public virtual PgRowValueExpression Update(IReadOnlyList<SqlExpression> values)

Parameters

values IReadOnlyList<SqlExpression>

Returns

PgRowValueExpression

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.

protected override Expression VisitChildren(ExpressionVisitor visitor)

Parameters

visitor ExpressionVisitor

An instance of Func<T, TResult>.

Returns

Expression

The expression being visited, or an expression which should replace it in the tree.