// Currently used by InMemoryTable.
public static TElement CopyEntity <TElement>(ITableEntity entity) where TElement : ITableEntity, new()
{
// Copy mutable data in case both entities are DynamicTableEntity.
// https://github.com/Azure/azure-storage-net/issues/154
// We could equally well do "new TElement" and use the setters directly.
return((TElement)AzureTableAccessors.GetRetrieveResolver(TableOperation.Retrieve <TElement>("1", "1"))(
entity.PartitionKey, entity.RowKey, entity.Timestamp, CopyPropertyDict(entity.WriteEntity(null)), entity.ETag));
}
// Single in terms of batch
// FIXME: IChainTable2 (following IChainTable) allows Retrieve in
// ExecuteAsync but not ExecuteBatchAsync. What do we want to do?
public virtual async Task <TableResult> ExecuteAsync(TableOperation operation,
TableRequestOptions requestOptions = null, OperationContext operationContext = null)
{
if (operation.GetOperationType() == TableOperationType.Retrieve)
{
// Retrieve supports custom entity resolvers but query doesn't.
// Work around this by querying as DynamicTableEntity and then
// running the custom resolver. XXX: Fix IChainTable2 so we can
// skip this step and avoid the cost.
var query = new TableQuery <DynamicTableEntity> {
FilterString = ChainTableUtils.GeneratePointRetrievalFilterCondition(operation.GetRetrievePrimaryKey())
};
DynamicTableEntity entity = (await ExecuteQueryAtomicAsync(query, requestOptions, operationContext)).SingleOrDefault();
if (entity == null)
{
return new TableResult {
HttpStatusCode = (int)HttpStatusCode.NotFound
}
}
;
else
{
return new TableResult
{
HttpStatusCode = (int)HttpStatusCode.OK,
Result = AzureTableAccessors.GetRetrieveResolver(operation)(
entity.PartitionKey, entity.RowKey, entity.Timestamp, entity.WriteEntity(null), entity.ETag),
Etag = entity.ETag
}
};
}
var batch = new TableBatchOperation();
batch.Add(operation);
try
{
IList <TableResult> resultList = await ExecuteBatchAsync(batch, requestOptions, operationContext);
Debug.Assert(resultList.Count == 1);
return(resultList[0]);
}
catch (ChainTableBatchException e)
{
// XXX: Does this lose the stack trace?
throw new StorageException(e.RequestInformation, e.Message, e.InnerException);
}
}