Table of Contents

Class SqlQueryDependentAttribute

Namespace
LinqToDB.Expressions
Assembly
linq2db.dll

Used for controlling query caching of custom SQL Functions. Parameter with this attribute will be evaluated on client side before generating SQL.

[AttributeUsage(AttributeTargets.Parameter)]
public class SqlQueryDependentAttribute : Attribute
Inheritance
SqlQueryDependentAttribute
Derived
Inherited Members
Extension Methods

Constructors

SqlQueryDependentAttribute() 

public SqlQueryDependentAttribute()

Methods

ExpressionsEqual<TContext>(TContext, Expression, Expression, Func<TContext, Expression, Expression, bool>)

Compares two expressions during expression tree comparison. Has to be overriden if specific comparison required.

public virtual bool ExpressionsEqual<TContext>(TContext context, Expression expr1, Expression expr2, Func<TContext, Expression, Expression, bool> comparer)

Parameters

context TContext
expr1 Expression
expr2 Expression
comparer Func<TContext, Expression, Expression, bool>

Default function for comparing expressions.

Returns

bool

Result of comparison

Type Parameters

TContext

ObjectsEqual(object?, object?)

Compares two objects during expression tree comparison. Handles sequences also. Has to be overriden if specific comparison required.

public virtual bool ObjectsEqual(object? obj1, object? obj2)

Parameters

obj1 object
obj2 object

Returns

bool

Result of comparison

PrepareForCache(Expression)

Used for preparation method argument to cached expression value.

public virtual Expression PrepareForCache(Expression expression)

Parameters

expression Expression

Expression for caching.

Returns

Expression

Ready to cache expression.

SplitExpression(Expression)

Returns sub-expressions, if attribute applied to composite expression. Default (non-composite) implementation returns expression.

public virtual IEnumerable<Expression> SplitExpression(Expression expression)

Parameters

expression Expression

Expression to split.

Returns

IEnumerable<Expression>

Passed expression of sub-expressions for composite expression.