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RelationalQueryableMethodTranslatingExpressionVisitor.TranslateSingleOrDefault Method

Definition

Translates Single<TSource>(IQueryable<TSource>) method or SingleOrDefault<TSource>(IQueryable<TSource>) and their other overloads over the given source.

protected override Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression TranslateSingleOrDefault (Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression source, System.Linq.Expressions.LambdaExpression predicate, Type returnType, bool returnDefault);
protected override Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression? TranslateSingleOrDefault (Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression source, System.Linq.Expressions.LambdaExpression? predicate, Type returnType, bool returnDefault);
override this.TranslateSingleOrDefault : Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression * System.Linq.Expressions.LambdaExpression * Type * bool -> Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression
Protected Overrides Function TranslateSingleOrDefault (source As ShapedQueryExpression, predicate As LambdaExpression, returnType As Type, returnDefault As Boolean) As ShapedQueryExpression

Parameters

source
ShapedQueryExpression

The shaped query on which the operator is applied.

predicate
LambdaExpression

The predicate supplied in the call.

returnType
Type

The return type of result.

returnDefault
Boolean

A value indicating whether default should be returned or throw.

Returns

The shaped query after translation.

Applies to