private async Task SaveResultsHelper(SaveResultsRequestParams saveParams,
RequestContext <SaveResultRequestResult> requestContext, IFileStreamFactory fileFactory)
{
// retrieve query for OwnerUri
Query query;
if (!ActiveQueries.TryGetValue(saveParams.OwnerUri, out query))
{
await requestContext.SendError(SR.QueryServiceQueryInvalidOwnerUri);
return;
}
//Setup the callback for completion of the save task
ResultSet.SaveAsAsyncEventHandler successHandler = async parameters =>
{
await requestContext.SendResult(new SaveResultRequestResult());
};
ResultSet.SaveAsFailureAsyncEventHandler errorHandler = async(parameters, reason) =>
{
string message = SR.QueryServiceSaveAsFail(Path.GetFileName(parameters.FilePath), reason);
await requestContext.SendError(message);
};
try
{
// Launch the task
query.SaveAs(saveParams, fileFactory, successHandler, errorHandler);
}
catch (Exception e)
{
await errorHandler(saveParams, e.Message);
}
}
/// <summary>
/// Saves the requested results to a file format of the user's choice
/// </summary>
/// <param name="saveParams">Parameters for the save as request</param>
/// <param name="fileFactory">
/// Factory for creating the reader/writer pair for the requested output format
/// </param>
/// <param name="successHandler">Delegate to call when the request completes successfully</param>
/// <param name="failureHandler">Delegate to call if the request fails</param>
public void SaveAs(SaveResultsRequestParams saveParams, IFileStreamFactory fileFactory,
ResultSet.SaveAsAsyncEventHandler successHandler, ResultSet.SaveAsFailureAsyncEventHandler failureHandler)
{
// Sanity check to make sure that the batch is within bounds
if (saveParams.BatchIndex < 0 || saveParams.BatchIndex >= Batches.Length)
{
throw new ArgumentOutOfRangeException(nameof(saveParams.BatchIndex), SR.QueryServiceSubsetBatchOutOfRange);
}
Batches[saveParams.BatchIndex].SaveAs(saveParams, fileFactory, successHandler, failureHandler);
}
/// <summary>
/// Saves a result to a file format selected by the user
/// </summary>
/// <param name="saveParams">Parameters for the save as request</param>
/// <param name="fileFactory">
/// Factory for creating the reader/writer pair for outputing to the selected format
/// </param>
/// <param name="successHandler">Delegate to call when request successfully completes</param>
/// <param name="failureHandler">Delegate to call if the request fails</param>
public void SaveAs(SaveResultsRequestParams saveParams, IFileStreamFactory fileFactory,
ResultSet.SaveAsAsyncEventHandler successHandler, ResultSet.SaveAsFailureAsyncEventHandler failureHandler)
{
// Get the result set to save
ResultSet resultSet;
lock (resultSets)
{
// Sanity check to make sure we have a valid result set
if (saveParams.ResultSetIndex < 0 || saveParams.ResultSetIndex >= resultSets.Count)
{
throw new ArgumentOutOfRangeException(nameof(saveParams.BatchIndex), SR.QueryServiceSubsetResultSetOutOfRange);
}
resultSet = resultSets[saveParams.ResultSetIndex];
}
resultSet.SaveAs(saveParams, fileFactory, successHandler, failureHandler);
}
