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QueryableMethodTranslatingExpressionVisitor.TranslateDefaultIfEmpty Method

  • Reference

Definition

Namespace:
Microsoft.EntityFrameworkCore.Query
Assembly:
Microsoft.EntityFrameworkCore.dll
Package:
Microsoft.EntityFrameworkCore v3.0.0
Package:
Microsoft.EntityFrameworkCore v3.1.0
Package:
Microsoft.EntityFrameworkCore v5.0.0
Package:
Microsoft.EntityFrameworkCore v6.0.0
Package:
Microsoft.EntityFrameworkCore v7.0.0
Package:
Microsoft.EntityFrameworkCore v8.0.0

Translates DefaultIfEmpty<TSource>(IQueryable<TSource>) method and other overloads over the given source.

protected abstract Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression TranslateDefaultIfEmpty (Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression source, System.Linq.Expressions.Expression defaultValue);
protected abstract Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression? TranslateDefaultIfEmpty (Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression source, System.Linq.Expressions.Expression? defaultValue);
abstract member TranslateDefaultIfEmpty : Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression * System.Linq.Expressions.Expression -> Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression
Protected MustOverride Function TranslateDefaultIfEmpty (source As ShapedQueryExpression, defaultValue As Expression) As ShapedQueryExpression

Parameters

source
ShapedQueryExpression

The shaped query on which the operator is applied.

defaultValue
Expression

The default value to use.

Returns

ShapedQueryExpression

The shaped query after translation.

Applies to