internal Document DeleteHelper(Key key, DeleteItemOperationConfig config, bool isAsync)
{
var currentConfig = config ?? new DeleteItemOperationConfig();
var req = new DeleteItemRequest
{
TableName = TableName,
Key = key
};
req.BeforeRequestEvent += isAsync ?
new RequestEventHandler(UserAgentRequestEventHandlerAsync) :
new RequestEventHandler(UserAgentRequestEventHandlerSync);
if (currentConfig.ReturnValues == ReturnValues.AllOldAttributes)
{
req.ReturnValues = EnumToStringMapper.Convert(currentConfig.ReturnValues);
}
if (currentConfig.Expected != null)
{
req.Expected = currentConfig.Expected.ToExpectedAttributeMap();
}
var attributes = DDBClient.DeleteItem(req).DeleteItemResult.Attributes;
Document ret = null;
if (currentConfig.ReturnValues == ReturnValues.AllOldAttributes)
{
ret = Document.FromAttributeMap(attributes);
}
return ret;
}
IAsyncResult invokeDeleteItem(DeleteItemRequest deleteItemRequest, AsyncCallback callback, object state, bool synchronized)
{
IRequest irequest = new DeleteItemRequestMarshaller().Marshall(deleteItemRequest);
var unmarshaller = DeleteItemResponseUnmarshaller.GetInstance();
AsyncResult result = new AsyncResult(irequest, callback, state, synchronized, signer, unmarshaller);
Invoke(result);
return result;
}
/// <summary>
/// Initiates the asynchronous execution of the DeleteItem operation.
/// <seealso cref="Amazon.DynamoDB.AmazonDynamoDB.DeleteItem"/>
/// </summary>
///
/// <param name="deleteItemRequest">Container for the necessary parameters to execute the DeleteItem operation on AmazonDynamoDB.</param>
/// <param name="callback">An AsyncCallback delegate that is invoked when the operation completes.</param>
/// <param name="state">A user-defined state object that is passed to the callback procedure. Retrieve this object from within the callback
/// procedure using the AsyncState property.</param>
///
/// <returns>An IAsyncResult that can be used to poll or wait for results, or both; this value is also needed when invoking EndDeleteItem
/// operation.</returns>
public IAsyncResult BeginDeleteItem(DeleteItemRequest deleteItemRequest, AsyncCallback callback, object state)
{
return invokeDeleteItem(deleteItemRequest, callback, state, false);
}
/// <summary>
/// <para>Deletes a single item in a table by primary key.</para> <para>You can perform a conditional delete operation that deletes the item if
/// it exists, or if it has an expected attribute value.</para>
/// </summary>
///
/// <param name="deleteItemRequest">Container for the necessary parameters to execute the DeleteItem service method on AmazonDynamoDB.</param>
///
/// <returns>The response from the DeleteItem service method, as returned by AmazonDynamoDB.</returns>
///
/// <exception cref="ProvisionedThroughputExceededException"/>
/// <exception cref="ConditionalCheckFailedException"/>
/// <exception cref="InternalServerErrorException"/>
/// <exception cref="ResourceNotFoundException"/>
public DeleteItemResponse DeleteItem(DeleteItemRequest deleteItemRequest)
{
IAsyncResult asyncResult = invokeDeleteItem(deleteItemRequest, null, null, true);
return EndDeleteItem(asyncResult);
}
/// <summary>
/// <para> Deletes a single item in a table by primary key. You can perform a conditional delete operation that deletes the item if it exists,
/// or if it has an expected attribute value. </para>
/// </summary>
///
/// <param name="deleteItemRequest">Container for the necessary parameters to execute the DeleteItem service method on AmazonDynamoDB.</param>
///
/// <returns>The response from the DeleteItem service method, as returned by AmazonDynamoDB.</returns>
///
/// <exception cref="ProvisionedThroughputExceededException"/>
/// <exception cref="ConditionalCheckFailedException"/>
/// <exception cref="InternalServerErrorException"/>
/// <exception cref="ResourceNotFoundException"/>
public DeleteItemResponse DeleteItem(DeleteItemRequest deleteItemRequest)
{
IRequest<DeleteItemRequest> request = new DeleteItemRequestMarshaller().Marshall(deleteItemRequest);
DeleteItemResponse response = Invoke<DeleteItemRequest, DeleteItemResponse> (request, this.signer, DeleteItemResponseUnmarshaller.GetInstance());
return response;
}
