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QuickCore/Quick.Core.Linq.Abstractions.pas at master · ChrisAtXenos/QuickCore · GitHub
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{
***************************************************************************
Copyright (c) 2016-2020 Kike Pérez
Unit : Quick.Core.Linq.Abstractions
Description : Core Linq Abstractions
Author : Kike Pérez
Version : 1.0
Created : 12/03/2020
Modified : 24/03/2020
This file is part of QuickCore: https://github.com/exilon/QuickCore
***************************************************************************
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
***************************************************************************
}
unit
Quick.Core.Linq.Abstractions;
{
$i QuickCore.inc
}
interface
uses
System.SysUtils,
Quick.
Value
,
{
$IFDEF VALUE_FORMATPARAMS
}
System.Rtti,
{
$ENDIF
}
Quick.Collections;
type
TLinqOrderDirection = (odAscending, odDescending);
ILinq<T> =
interface
[
'
{18131A32-C79F-4D6D-9FF0-C0A019E28B02}
'
]
{
$IFDEF VALUE_FORMATPARAMS
}
function
Where
(
const
aWhereClause : string; aWhereValues :
array
of
TValue) : ILinq<T>; overload;
{
$ELSE
}
function
Where
(
const
aWhereClause : string; aWhereValues :
array
of
const
) : ILinq<T>; overload;
{
$ENDIF
}
function
Where
(
const
aWhereClause: string): ILinq<T>; overload;
function
Where
(aPredicate : TPredicate<T>) : ILinq<T>; overload;
function
OrderBy
(
const
aFieldNames : string) : ILinq<T>;
function
OrderByDescending
(
const
aFieldNames : string) : ILinq<T>;
function
SelectFirst
: T;
function
SelectLast
: T;
function
SelectTop
(aLimit : Integer) : IList<T>;
function
Select
: IList<T>; overload;
function
Select
(
const
aPropertyName : string) : IList<TFlexValue>; overload;
function
Count
: Integer;
function
Update
(
const
aFields : TArray<string>; aValues :
array
of
const
) : Boolean;
function
Delete
: Boolean;
end
;
implementation
end
.
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