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SqlServerSpecific.cs
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SqlServerSpecific.cs
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using System;
using System.Linq;
using System.Linq.Expressions;
using JetBrains.Annotations;
namespace LinqToDB.DataProvider.SqlServer
{
using Expressions;
using Linq;
using SqlProvider;
public interface ISqlServerSpecificTable<out TSource> : ITable<TSource>
where TSource : notnull
{
}
sealed class SqlServerSpecificTable<TSource> : DatabaseSpecificTable<TSource>, ISqlServerSpecificTable<TSource>, ITable
where TSource : notnull
{
public SqlServerSpecificTable(ITable<TSource> table) : base(table)
{
}
}
public interface ISqlServerSpecificQueryable<out TSource> : IQueryable<TSource>
{
}
sealed class SqlServerSpecificQueryable<TSource> : DatabaseSpecificQueryable<TSource>, ISqlServerSpecificQueryable<TSource>, ITable
{
public SqlServerSpecificQueryable(IQueryable<TSource> queryable) : base(queryable)
{
}
}
public static partial class SqlServerTools
{
[LinqTunnel, Pure, IsQueryable]
[Sql.QueryExtension(null, Sql.QueryExtensionScope.None, typeof(NoneExtensionBuilder))]
public static ISqlServerSpecificTable<TSource> AsSqlServer<TSource>(this ITable<TSource> table)
where TSource : notnull
{
var newTable = new Table<TSource>(table.DataContext,
Expression.Call(
null,
MethodHelper.GetMethodInfo(AsSqlServer, table),
table.Expression)
);
return new SqlServerSpecificTable<TSource>(newTable);
}
[LinqTunnel, Pure, IsQueryable]
[Sql.QueryExtension(null, Sql.QueryExtensionScope.None, typeof(NoneExtensionBuilder))]
public static ISqlServerSpecificQueryable<TSource> AsSqlServer<TSource>(this IQueryable<TSource> source)
where TSource : notnull
{
var currentSource = LinqExtensions.ProcessSourceQueryable?.Invoke(source) ?? source;
return new SqlServerSpecificQueryable<TSource>(currentSource.Provider.CreateQuery<TSource>(
Expression.Call(
null,
MethodHelper.GetMethodInfo(AsSqlServer, source),
currentSource.Expression)));
}
}
}