---
description: "Learn more about: IRowsetChangeImpl Class"
title: "IRowsetChangeImpl Class"
ms.date: "11/04/2016"
f1_keywords: ["ATL::IRowsetChangeImpl", "IRowsetChangeImpl", "ATL.IRowsetChangeImpl", "ATL.IRowsetChangeImpl.DeleteRows", "ATL::IRowsetChangeImpl::DeleteRows", "IRowsetChangeImpl.DeleteRows", "DeleteRows", "IRowsetChangeImpl::DeleteRows", "ATL.IRowsetChangeImpl.InsertRow", "InsertRow", "IRowsetChangeImpl.InsertRow", "ATL::IRowsetChangeImpl::InsertRow", "IRowsetChangeImpl::InsertRow", "IRowsetChangeImpl::SetData", "ATL.IRowsetChangeImpl.SetData", "IRowsetChangeImpl.SetData", "ATL::IRowsetChangeImpl::SetData", "IRowsetChangeImpl::FlushData", "IRowsetChangeImpl.FlushData", "FlushData"]
helpviewer_keywords: ["providers, updatable", "updatable providers, immediate update", "IRowsetChangeImpl class", "DeleteRows method", "InsertRow method", "SetData method", "FlushData method"]
ms.assetid: 1e9fee15-ed9e-4387-af8f-215569beca6c
---
# IRowsetChangeImpl Class

The OLE DB Templates implementation of the [IRowsetChange](/previous-versions/windows/desktop/ms715790(v=vs.85)) interface in the OLE DB specification.

## Syntax

```cpp
template <
   class T,
   class Storage,
   class BaseInterface = IRowsetChange,
   class RowClass = CSimpleRow,
   class MapClass = CAtlMap <RowClass::KeyType, RowClass*>>
class ATL_NO_VTABLE IRowsetChangeImpl : public BaseInterface
```

### Parameters

*T*<br/>
A class derived from `IRowsetChangeImpl`.

*Storage*<br/>
The user record.

*BaseInterface*<br/>
The base class for the interface, such as `IRowsetChange`.

*RowClass*<br/>
The storage unit for the row handle.

*MapClass*<br/>
The storage unit for all row handles held by the provider.

## Requirements

**Header:** atldb.h

## Members

### Interface Methods (Used with IRowsetChange)

| Name | Description |
|-|-|
|[DeleteRows](#deleterows)|Deletes rows from the rowset.|
|[InsertRow](#insertrow)|Inserts a row into the rowset.|
|[SetData](#setdata)|Sets data values in one or more columns.|

### Implementation Method (Callback)

| Name | Description |
|-|-|
|[FlushData](#flushdata)|Overridden by provider to commit data to its store.|

## Remarks

This interface is responsible for immediate write operations to a data store. "Immediate" means that when the end user (the person using the consumer) makes any changes, those changes are immediately transmitted to the data store (and cannot be undone).

`IRowsetChangeImpl` implements the OLE DB `IRowsetChange` interface, which enables updating of values of columns in existing rows, deleting rows, and inserting new rows.

The OLE DB Templates implementation supports all the base methods (`SetData`, `InsertRow`, and `DeleteRows`).

> [!IMPORTANT]
> It is strongly recommended that you read the following documentation BEFORE attempting to implement your provider:

- [Creating an Updatable Provider](../../data/oledb/creating-an-updatable-provider.md)

- Chapter 6 of the *OLE DB Programmer's Reference*

- Also see how the `RUpdateRowset` class is used in the [UpdatePV](https://github.com/Microsoft/VCSamples/tree/master/VC2010Samples/ATL/OLEDB/Provider/UPDATEPV) sample.

## <a name="deleterows"></a> IRowsetChangeImpl::DeleteRows

Deletes rows from the rowset.

### Syntax

```cpp
STDMETHOD (DeleteRows )(HCHAPTER /* hReserved */,
   DBCOUNTITEM cRows,
   const HROW rghRows[],
   DBROWSTATUS rgRowStatus[]);
```

#### Parameters

See [IRowsetChange::DeleteRows](/previous-versions/windows/desktop/ms724362(v=vs.85)) in the *OLE DB Programmer's Reference*.

## <a name="insertrow"></a> IRowsetChangeImpl::InsertRow

Creates and initializes a new row in the rowset.

### Syntax

```cpp
STDMETHOD (InsertRow )(HCHAPTER /* hReserved */,
   HACCESSOR hAccessor,
   void* pData,
   HROW* phRow);
```

#### Parameters

See [IRowsetChange::InsertRow](/previous-versions/windows/desktop/ms716921(v=vs.85)) in the *OLE DB Programmer's Reference*.

## <a name="setdata"></a> IRowsetChangeImpl::SetData

Sets data values in one or more columns.

### Syntax

```cpp
STDMETHOD (SetData )(HROW hRow,
   HACCESSOR hAccessor,
   void* pSrcData);
```

#### Parameters

See [IRowsetChange::SetData](/previous-versions/windows/desktop/ms721232(v=vs.85)) in the *OLE DB Programmer's Reference*.

## <a name="flushdata"></a> IRowsetChangeImpl::FlushData

Overridden by provider to commit data to its store.

### Syntax

```cpp
HRESULT FlushData(HROW hRowToFlush,
   HACCESSOR hAccessorToFlush);
```

#### Parameters

*hRowToFlush*<br/>
[in] Handle to the rows for the data. The type of this row is determined from the *RowClass* template argument of the `IRowsetImpl` class (`CSimpleRow` by default).

*hAccessorToFlush*<br/>
[in] Handle to the accessor, which contains binding information and type information in its `PROVIDER_MAP` (see [IAccessorImpl](../../data/oledb/iaccessorimpl-class.md)).

### Return Value

A standard HRESULT.

## See also

[OLE DB Provider Templates](../../data/oledb/ole-db-provider-templates-cpp.md)<br/>
[OLE DB Provider Template Architecture](../../data/oledb/ole-db-provider-template-architecture.md)