Table of Contents

Class PgRegexMatchExpression

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

Represents a PostgreSQL regular expression match expression.

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

Constructors

PgRegexMatchExpression(SqlExpression, SqlExpression, RegexOptions, RelationalTypeMapping?)

Constructs a PgRegexMatchExpression.

public PgRegexMatchExpression(SqlExpression match, SqlExpression pattern, RegexOptions options, RelationalTypeMapping? typeMapping)

Parameters

match SqlExpression

The expression to match.

pattern SqlExpression

The pattern to match.

options RegexOptions

The options for regular expression evaluation.

typeMapping RelationalTypeMapping

The type mapping for the expression.

Properties

Match

The match expression.

public virtual SqlExpression Match { get; }

Property Value

SqlExpression

Options

The options for regular expression evaluation.

public virtual RegexOptions Options { get; }

Property Value

RegexOptions

Pattern

The pattern to match.

public virtual SqlExpression Pattern { get; }

Property Value

SqlExpression

Type

Gets the static type of the expression that this Expression represents.

public override Type Type { get; }

Property Value

Type

The Type that represents the static type of the expression.

Methods

Equals(PgRegexMatchExpression?)

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

public virtual bool Equals(PgRegexMatchExpression? other)

Parameters

other PgRegexMatchExpression

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? other)

Parameters

other 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

ToString()

Returns a textual representation of the Expression.

public override string ToString()

Returns

string

A textual representation of the Expression.

Update(SqlExpression, 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 PgRegexMatchExpression Update(SqlExpression match, SqlExpression pattern)

Parameters

match SqlExpression
pattern SqlExpression

Returns

PgRegexMatchExpression

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.

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