Class SqlPredicate.IsTrue

Namespace

LinqToDB.Internal.SqlQuery

Assembly

linq2db.dll

'[NOT] Expr1 IS TRUE' predicate.

public sealed class SqlPredicate.IsTrue : SqlPredicate.BaseNotExpr, ISqlPredicate, IQueryElement

Inheritance

object

QueryElement

SqlPredicate

SqlPredicate.Expr

SqlPredicate.BaseNotExpr

SqlPredicate.IsTrue

Implements

ISqlPredicate

IQueryElement

Inherited Members

SqlPredicate.BaseNotExpr.IsNot

SqlPredicate.BaseNotExpr.CanInvert(NullabilityContext)

SqlPredicate.Expr.Expr1

SqlPredicate.True

SqlPredicate.False

SqlPredicate.MakeBool(bool)

SqlPredicate.Precedence

SqlPredicate.ToString(QueryElementTextWriter)

QueryElement.ReferenceComparer

Extension Methods

QueryHelper.CanBeEvaluated(IQueryElement, EvaluationContext)

QueryHelper.CanBeEvaluated(IQueryElement, bool)

QueryHelper.EvaluateBoolExpression(IQueryElement, EvaluationContext, bool?)

QueryHelper.EvaluateExpression(IQueryElement, EvaluationContext)

QueryHelper.HasElement(IQueryElement, IQueryElement)

QueryHelper.HasParameter(IQueryElement)

QueryHelper.HasQueryParameter(IQueryElement)

QueryHelper.IsMutable(IQueryElement)

QueryHelper.TryEvaluateExpression(IQueryElement, EvaluationContext, out object?)

QueryHelper.TryEvaluateExpressionForServer(IQueryElement, EvaluationContext, out object?)

QueryVisitorExtensions.Find(IQueryElement?, QueryElementType)

QueryVisitorExtensions.Find(IQueryElement?, Func<IQueryElement, bool>)

QueryVisitorExtensions.FindExcept<TContext>(IQueryElement?, TContext, IQueryElement, Func<TContext, IQueryElement, bool>)

QueryVisitorExtensions.Find<TContext>(IQueryElement?, TContext, Func<TContext, IQueryElement, bool>)

QueryVisitorExtensions.Visit(IQueryElement, Action<IQueryElement>)

QueryVisitorExtensions.VisitAll(IQueryElement, Action<IQueryElement>)

QueryVisitorExtensions.VisitAll<TContext>(IQueryElement, TContext, Action<TContext, IQueryElement>)

QueryVisitorExtensions.VisitParentFirst(IQueryElement, Func<IQueryElement, bool>)

QueryVisitorExtensions.VisitParentFirstAll(IQueryElement, Func<IQueryElement, bool>)

QueryVisitorExtensions.VisitParentFirstAll<TContext>(IQueryElement, TContext, Func<TContext, IQueryElement, bool>)

QueryVisitorExtensions.VisitParentFirst<TContext>(IQueryElement, TContext, Func<TContext, IQueryElement, bool>)

QueryVisitorExtensions.Visit<TContext>(IQueryElement, TContext, Action<TContext, IQueryElement>)

PredicateExtensions.MakeNot(ISqlPredicate)

PredicateExtensions.MakeNot(ISqlPredicate, bool)

QueryVisitorExtensions.Clone<T>(T?)

QueryVisitorExtensions.Clone<T>(T?, Dictionary<IQueryElement, IQueryElement>)

QueryVisitorExtensions.Clone<T>(T?, Func<IQueryElement, bool>)

QueryVisitorExtensions.Clone<T, TContext>(T?, TContext, Dictionary<IQueryElement, IQueryElement>, Func<TContext, IQueryElement, bool>)

QueryVisitorExtensions.Clone<T, TContext>(T?, TContext, Func<TContext, IQueryElement, bool>)

QueryVisitorExtensions.ConvertAll<T>(T, bool, Func<SqlQueryConvertVisitor<object?>, IQueryElement, IQueryElement>)

QueryVisitorExtensions.ConvertAll<TContext, T>(T, TContext, bool, Func<SqlQueryConvertVisitor<TContext>, IQueryElement, IQueryElement>)

QueryVisitorExtensions.ConvertAll<TContext, T>(T, TContext, Func<SqlQueryConvertVisitor<TContext>, IQueryElement, IQueryElement>)

QueryVisitorExtensions.Convert<T>(T, Func<SqlQueryConvertVisitor<object?>, IQueryElement, IQueryElement>)

QueryVisitorExtensions.Convert<T>(T, Func<SqlQueryConvertVisitor<object?>, IQueryElement, IQueryElement>, bool)

QueryVisitorExtensions.Convert<TContext, T>(T, TContext, bool, Func<SqlQueryConvertVisitor<TContext>, IQueryElement, IQueryElement>)

QueryVisitorExtensions.Convert<TContext, T>(T, TContext, bool, Func<SqlQueryConvertVisitor<TContext>, IQueryElement, IQueryElement>, bool)

QueryVisitorExtensions.Convert<TContext, T>(T, TContext, Func<SqlQueryConvertVisitor<TContext>, IQueryElement, IQueryElement>)

QueryVisitorExtensions.Convert<TContext, T>(T, TContext, Func<SqlQueryConvertVisitor<TContext>, IQueryElement, IQueryElement>, bool)

QueryVisitorExtensions.Replace<T>(T, IDictionary<IQueryElement, IQueryElement>, params IQueryElement[])

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

IsTrue(ISqlExpression, ISqlExpression, ISqlExpression, bool?, bool)

public IsTrue(ISqlExpression exp1, ISqlExpression trueValue, ISqlExpression falseValue, bool? withNull, bool isNot)

Parameters

exp1 ISqlExpression

trueValue ISqlExpression

falseValue ISqlExpression

withNull bool?

isNot bool

Properties

ElementType

AST node type.

public override QueryElementType ElementType { get; }

Property Value

QueryElementType

FalseValue

public ISqlExpression FalseValue { get; set; }

Property Value

ISqlExpression

TrueValue

public ISqlExpression TrueValue { get; set; }

Property Value

ISqlExpression

WithNull

• null : evaluate predicate as is and preserve UNKNOWN (null) values if they produced
• false : UNKNOWN values should be converted to FALSE
• true : UNKNOWN values should be converted to TRUE

public bool? WithNull { get; }

Property Value

bool?

Methods

Accept(QueryElementVisitor)

Visitor support.

public override IQueryElement Accept(QueryElementVisitor visitor)

Parameters

visitor QueryElementVisitor

Returns

IQueryElement

CanBeUnknown(NullabilityContext, bool)

Returns true if predicate could be evaluated to UNKNOWN.

public override bool CanBeUnknown(NullabilityContext nullability, bool withoutUnknownErased)

Parameters

nullability NullabilityContext

withoutUnknownErased bool

Returns

bool

Equals(ISqlPredicate, Func<ISqlExpression, ISqlExpression, bool>)

public override bool Equals(ISqlPredicate other, Func<ISqlExpression, ISqlExpression, bool> comparer)

Parameters

other ISqlPredicate

comparer Func<ISqlExpression, ISqlExpression, bool>

Returns

bool

GetElementHashCode()

public override int GetElementHashCode()

Returns

int

Invert(NullabilityContext)

public override ISqlPredicate Invert(NullabilityContext nullability)

Parameters

nullability NullabilityContext

Returns

ISqlPredicate

Reduce(NullabilityContext, bool)

public ISqlPredicate Reduce(NullabilityContext nullability, bool isInsidePredicate)

Parameters

nullability NullabilityContext

isInsidePredicate bool

Enables generation of addtional conversion of UNKNOWN to FALSE for nested predicates when non-nullable result.

Returns

ISqlPredicate

WritePredicate(QueryElementTextWriter)

protected override void WritePredicate(QueryElementTextWriter writer)

Parameters

writer QueryElementTextWriter