Table of Contents

Class FirebirdSqlExpressionConvertVisitor

Namespace
LinqToDB.Internal.DataProvider.Firebird
Assembly
linq2db.dll
public class FirebirdSqlExpressionConvertVisitor : SqlExpressionConvertVisitor
Inheritance
object
FirebirdSqlExpressionConvertVisitor
Derived
Inherited Members
Extension Methods

Constructors

FirebirdSqlExpressionConvertVisitor(bool) 

public FirebirdSqlExpressionConvertVisitor(bool allowModify)

Parameters

allowModify bool

Fields

LikeFirebirdEscapeSymbols 

protected static string[] LikeFirebirdEscapeSymbols

Field Value

string[]

Properties

ConcatRequiresExplicitStringCast

When true (default), ConvertConcat(SqlConcatExpression) wraps every non-string operand in an explicit CAST(... AS VARCHAR(N)) before adding it to the concat chain. Required for providers whose concat operator is + (SQL Server pre-2025, SqlCe, Sybase ASE, Access) — SQL-standard data-type precedence would otherwise try to coerce string operands to the non-string side's type. Providers whose final concat operator is || (PostgreSQL / Oracle / SQLite / SAP HANA / DuckDB / Firebird / DB2 / Informix / SQL Server 2025+) or CONCAT(...) function (MySQL / ClickHouse) auto-coerce non-string operands and override this to false for cleaner SQL.

protected override bool ConcatRequiresExplicitStringCast { get; }

Property Value

bool

LikeCharactersToEscape

Characters with special meaning in LIKE predicate (defined by LikeCharactersToEscape) that should be escaped to be used as matched character. Default: ["%", "_", "?", "*", "#", "[", "]"].

public override string[] LikeCharactersToEscape { get; }

Property Value

string[]

LikeValueParameterSupport 

public override bool LikeValueParameterSupport { get; }

Property Value

bool

Methods

ConvertConversion(SqlCastExpression)

Implements SqlCastExpression conversion.

protected override ISqlExpression ConvertConversion(SqlCastExpression cast)

Parameters

cast SqlCastExpression

Returns

ISqlExpression

ConvertSearchStringPredicate(SearchString) 

public override ISqlPredicate ConvertSearchStringPredicate(SqlPredicate.SearchString predicate)

Parameters

predicate SqlPredicate.SearchString

Returns

ISqlPredicate

ConvertSqlBinaryExpression(SqlBinaryExpression) 

public override IQueryElement ConvertSqlBinaryExpression(SqlBinaryExpression element)

Parameters

element SqlBinaryExpression

Returns

IQueryElement

ConvertSqlFunction(SqlFunction) 

public override ISqlExpression ConvertSqlFunction(SqlFunction func)

Parameters

func SqlFunction

Returns

ISqlExpression

ConvertSqlUnaryExpression(SqlUnaryExpression) 

public override ISqlExpression ConvertSqlUnaryExpression(SqlUnaryExpression element)

Parameters

element SqlUnaryExpression

Returns

ISqlExpression

GetCaseSensitiveParameter(SearchString) 

protected virtual bool? GetCaseSensitiveParameter(SqlPredicate.SearchString predicate)

Parameters

predicate SqlPredicate.SearchString

Returns

bool?

VisitExprPredicate(Expr) 

protected override IQueryElement VisitExprPredicate(SqlPredicate.Expr predicate)

Parameters

predicate SqlPredicate.Expr

Returns

IQueryElement

WrapColumnExpression(ISqlExpression) 

protected override ISqlExpression WrapColumnExpression(ISqlExpression expr)

Parameters

expr ISqlExpression

Returns

ISqlExpression