Class Sql.FunctionAttribute

Namespace

LinqToDB

Assembly

linq2db.dll

Defines an SQL server-side Function with parameters passed in.

[Serializable]
[AttributeUsage(AttributeTargets.Method|AttributeTargets.Property, AllowMultiple = true, Inherited = false)]
public class Sql.FunctionAttribute : Sql.ExpressionAttribute, _Attribute

Inheritance

object

Attribute

MappingAttribute

Sql.ExpressionAttribute

Sql.FunctionAttribute

Implements

_Attribute

Inherited Members

Sql.ExpressionAttribute.Expression

Sql.ExpressionAttribute.ArgIndices

Sql.ExpressionAttribute.Precedence

Sql.ExpressionAttribute.ServerSideOnly

Sql.ExpressionAttribute.PreferServerSide

Sql.ExpressionAttribute.InlineParameters

Sql.ExpressionAttribute.ExpectExpression

Sql.ExpressionAttribute.IsPredicate

Sql.ExpressionAttribute.IsAggregate

Sql.ExpressionAttribute.IsWindowFunction

Sql.ExpressionAttribute.IsPure

Sql.ExpressionAttribute.IsNullable

Sql.ExpressionAttribute.IgnoreGenericParameters

Sql.ExpressionAttribute.CanBeNull

Sql.ExpressionAttribute.GetCanBeNull(ISqlExpression[])

Sql.ExpressionAttribute.CalcCanBeNull(Sql.IsNullableType, IEnumerable<bool>)

Sql.ExpressionAttribute.ResolveExpressionValues<TContext>(TContext, string, Func<TContext, string, string, string>)

Sql.ExpressionAttribute.UnknownExpression

Sql.ExpressionAttribute.PrepareParameterValues<TContext>(TContext, MappingSchema, Expression, ref string, bool, out List<Expression>, bool, out List<SqlDataType>, Func<TContext, Expression, ColumnDescriptor, ISqlExpression>)

Sql.ExpressionAttribute.PrepareArguments<TContext>(TContext, string, int[], bool, List<Expression>, List<SqlDataType>, Func<TContext, Expression, ColumnDescriptor, ISqlExpression>)

Sql.ExpressionAttribute.GetIsPredicate(Expression)

MappingAttribute.Configuration

MappingAttribute.GetHashCode()

MappingAttribute.Equals(object)

Extension Methods

Sql.IsDistinctFrom<T>(T, T)

Sql.IsNotDistinctFrom<T>(T, T)

SqlExtensions.In<T>(T, T, T)

SqlExtensions.In<T>(T, T, T, T)

SqlExtensions.In<T>(T, params T[])

SqlExtensions.In<T>(T, IEnumerable<T>)

SqlExtensions.In<T>(T, IQueryable<T>)

SqlExtensions.NotIn<T>(T, T, T)

SqlExtensions.NotIn<T>(T, T, T, T)

SqlExtensions.NotIn<T>(T, params T[])

SqlExtensions.NotIn<T>(T, IEnumerable<T>)

SqlExtensions.NotIn<T>(T, IQueryable<T>)

Constructors

FunctionAttribute()

Defines an SQL Function, which shall be the same as the name as the function called.

public FunctionAttribute()

FunctionAttribute(string)

Defines an SQL function with the given name.

public FunctionAttribute(string name)

Parameters

name string

The name of the function. no parenthesis () should be used.

FunctionAttribute(string, params int[])

Defines an SQL function with the given name.

public FunctionAttribute(string name, params int[] argIndices)

Parameters

name string

The name of the function. no parenthesis () should be used.

argIndices int[]

Used for setting the order of the method arguments being passed into the function.

FunctionAttribute(string, string)

Defines an SQL function with the given name, for the ProviderName given.

public FunctionAttribute(string configuration, string name)

Parameters

configuration string

The Database configuration for which this Expression will be used.

name string

The name of the function. no parenthesis () should be used.

FunctionAttribute(string, string, params int[])

Defines an SQL function with the given name, for the ProviderName given.

public FunctionAttribute(string configuration, string name, params int[] argIndices)

Parameters

configuration string

The Database configuration for which this Expression will be used.

name string

The name of the function. no parenthesis () should be used.

argIndices int[]

Used for setting the order of the method arguments being passed into the function.

Properties

Name

The name of the Database Function

public string? Name { get; set; }

Property Value

string

Methods

GetExpression<TContext>(TContext, IDataContext, SelectQuery, Expression, Func<TContext, Expression, ColumnDescriptor?, ISqlExpression>)

public override ISqlExpression? GetExpression<TContext>(TContext context, IDataContext dataContext, SelectQuery query, Expression expression, Func<TContext, Expression, ColumnDescriptor?, ISqlExpression> converter)

Parameters

context TContext

dataContext IDataContext

query SelectQuery

expression Expression

converter Func<TContext, Expression, ColumnDescriptor, ISqlExpression>

Returns

ISqlExpression

Type Parameters

TContext

GetObjectID()

Returns mapping attribute id, based on all attribute options.

public override string GetObjectID()

Returns

string