Class NpgsqlRegexTranslator

Namespace

Npgsql.EntityFrameworkCore.PostgreSQL.Query.ExpressionTranslators.Internal

Assembly

Npgsql.EntityFrameworkCore.PostgreSQL.dll

Translates Regex method calls into their corresponding PostgreSQL equivalent for database-side processing.

public class NpgsqlRegexTranslator : IMethodCallTranslator

Inheritance

object

NpgsqlRegexTranslator

Implements

IMethodCallTranslator

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Remarks

http://www.postgresql.org/docs/current/static/functions-matching.html

Constructors

NpgsqlRegexTranslator(NpgsqlTypeMappingSource, NpgsqlSqlExpressionFactory, bool)

This is an internal API that supports the Entity Framework Core infrastructure and not subject to the same compatibility standards as public APIs. It may be changed or removed without notice in any release. You should only use it directly in your code with extreme caution and knowing that doing so can result in application failures when updating to a new Entity Framework Core release.

public NpgsqlRegexTranslator(NpgsqlTypeMappingSource typeMappingSource, NpgsqlSqlExpressionFactory sqlExpressionFactory, bool supportRegexCount)

Parameters

typeMappingSource NpgsqlTypeMappingSource

sqlExpressionFactory NpgsqlSqlExpressionFactory

supportRegexCount bool

Methods

Translate(SqlExpression?, MethodInfo, IReadOnlyList<SqlExpression>, IDiagnosticsLogger<Query>)

Translates a LINQ MethodCallExpression to a SQL equivalent.

public SqlExpression? Translate(SqlExpression? instance, MethodInfo method, IReadOnlyList<SqlExpression> arguments, IDiagnosticsLogger<DbLoggerCategory.Query> logger)

Parameters

instance SqlExpression

A SQL representation of Object.

method MethodInfo

The method info from Method.

arguments IReadOnlyList<SqlExpression>

SQL representations of Arguments.

logger IDiagnosticsLogger<DbLoggerCategory.Query>

The query logger to use.

Returns

SqlExpression

A SQL translation of the MethodCallExpression.