internal Document PutItemHelper(Document doc, PutItemOperationConfig config, bool isAsync)
{
var currentConfig = config ?? new PutItemOperationConfig();
PutItemRequest req = new PutItemRequest
{
TableName = TableName,
Item = doc.ToAttributeMap()
};
req.BeforeRequestEvent += isAsync ?
new RequestEventHandler(UserAgentRequestEventHandlerAsync) :
new RequestEventHandler(UserAgentRequestEventHandlerSync);
if (currentConfig.Expected != null)
req.Expected = currentConfig.Expected.ToExpectedAttributeMap();
if (currentConfig.ReturnValues == ReturnValues.AllOldAttributes)
{
req.ReturnValues = EnumToStringMapper.Convert(currentConfig.ReturnValues);
}
var resp = DDBClient.PutItem(req);
doc.CommitChanges();
Document ret = null;
if (currentConfig.ReturnValues == ReturnValues.AllOldAttributes)
{
ret = Document.FromAttributeMap(resp.PutItemResult.Attributes);
}
return ret;
}
/// <summary>
/// Initiates the asynchronous execution of the PutItem operation.
/// <seealso cref="Amazon.DynamoDB.DocumentModel.Table.PutItem"/>
/// </summary>
/// <param name="doc">Document to save.</param>
/// <param name="config">Configuration to use.</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 EndPutItem
/// operation.</returns>
public IAsyncResult BeginPutItem(Document doc, PutItemOperationConfig config, AsyncCallback callback, object state)
{
return DynamoDBAsyncExecutor.BeginOperation(() => PutItemHelper(doc, config, true), callback, state);
}
/// <summary>
/// Puts a document into DynamoDB, using specified configs.
/// </summary>
/// <param name="doc">Document to save.</param>
/// <param name="config">Configuration to use.</param>
/// <returns>Null or updated attributes, depending on config.</returns>
public Document PutItem(Document doc, PutItemOperationConfig config)
{
return PutItemHelper(doc, config, false);
}
// Creates a PutItemOperationConfig for the keys-only Put operation
private PutItemOperationConfig CreateKeysOnlyPutConfig(Key key, UpdateItemOperationConfig config)
{
// configure the expected document
Document expected = new Document();
expected[this.HashKeyName] = null;
if (this.RangeKeyIsDefined)
{
expected[this.RangeKeyName] = null;
}
// create the PutItemOperationConfig
var putConfig = new PutItemOperationConfig
{
Expected = expected,
ReturnValues = ReturnValues.None
};
return putConfig;
}
