QueryableMethodTranslatingExpressionVisitor.TranslateGroupBy 方法

定義

命名空間:

Microsoft.EntityFrameworkCore.Query

組件:

Microsoft.EntityFrameworkCore.dll

套件:

Microsoft.EntityFrameworkCore v10.0.0

來源:

QueryableMethodTranslatingExpressionVisitor.cs

將方法及其他過載轉換 GroupBy<TSource,TKey>(IQueryable<TSource>, Expression<Func<TSource,TKey>>) 至給定來源。

protected abstract Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression? TranslateGroupBy(Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression source, System.Linq.Expressions.LambdaExpression keySelector, System.Linq.Expressions.LambdaExpression? elementSelector, System.Linq.Expressions.LambdaExpression? resultSelector);

abstract member TranslateGroupBy : Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression * System.Linq.Expressions.LambdaExpression * System.Linq.Expressions.LambdaExpression * System.Linq.Expressions.LambdaExpression -> Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression

Protected MustOverride Function TranslateGroupBy (source As ShapedQueryExpression, keySelector As LambdaExpression, elementSelector As LambdaExpression, resultSelector As LambdaExpression) As ShapedQueryExpression

參數

source

ShapedQueryExpression

即運算子所應用的形狀查詢。

keySelector

LambdaExpression

通話中提供的按鍵選擇器。

elementSelector

LambdaExpression

呼叫中提供的元素選擇器。

resultSelector

LambdaExpression

呼叫中提供的結果選擇器。

傳回

ShapedQueryExpression

翻譯後的形狀查詢。