/// <summary>
/// Merges two collections of transaction records.
/// </summary>
/// <param name="remoteResults">The remote transaction collection.</param>
/// <param name="localResults">The local transaction collection.</param>
/// <returns>A merged transaction collection.</returns>
internal static IEnumerable <Transaction> MergeTransactionRecords(IEnumerable <Transaction> remoteResults, IEnumerable <Transaction> localResults)
{
IEnumerable <Transaction> mergedTransactions = MultiDataSourcesPagingHelper.MergeResults(
remoteResults,
localResults,
GetTransactionMergingKey);
return(mergedTransactions);
}
/// <summary>
/// Get transactions using the request criteria.
/// </summary>
/// <param name="request">Request containing the criteria used to retrieve transactions.</param>
/// <returns>SearchJournalTransactionsServiceResponse object.</returns>
private static SearchJournalTransactionsServiceResponse SearchJournalTransactions(SearchJournalTransactionsServiceRequest request)
{
ThrowIf.Null(request, "request");
ThrowIf.Null(request.QueryResultSettings, "request.QueryResultSettings");
NetTracer.Information("TransactionService.SearchJournalTransactions()");
if (request.QueryResultSettings.Sorting == null)
{
request.QueryResultSettings.Sorting = new SortingInfo();
}
if (!request.QueryResultSettings.Sorting.IsSpecified)
{
request.QueryResultSettings.Sorting.Add(new SortColumn(RetailTransactionTableSchema.CreatedDateTimeColumn, isDescending: true));
request.QueryResultSettings.Sorting.Add(new SortColumn(RetailTransactionTableSchema.BeginDateTimeColumn, isDescending: true));
}
if (request.Criteria.SearchLocationType == SearchLocation.Local)
{
// Search local only.
PagedResult <Transaction> results = SearchJournalTransactionsLocally(request.Criteria, request.QueryResultSettings, request.RequestContext);
return(new SearchJournalTransactionsServiceResponse(results));
}
else if (request.Criteria.SearchLocationType == SearchLocation.Remote)
{
// Search remote only.
PagedResult <Transaction> results = SearchJournalTransactionsRemotely(request.Criteria, request.QueryResultSettings, request.RequestContext);
return(new SearchJournalTransactionsServiceResponse(results));
}
else
{
// Search all.
// Adjust the paging.
QueryResultSettings settings = request.QueryResultSettings;
PagingInfo adjustedPaging = MultiDataSourcesPagingHelper.GetAdjustedPaging(settings.Paging);
QueryResultSettings adjustedQueryResultSettings = new QueryResultSettings(settings.ColumnSet, adjustedPaging, settings.Sorting, settings.ChangeTracking);
// Get local results.
IEnumerable <Transaction> localTransactions = SearchJournalTransactionsLocally(request.Criteria, adjustedQueryResultSettings, request.RequestContext).Results;
// Getremote results.
IEnumerable <Transaction> remoteTransactions = Enumerable.Empty <Transaction>();
try
{
remoteTransactions = SearchJournalTransactionsRemotely(request.Criteria, adjustedQueryResultSettings, request.RequestContext).Results;
}
catch (Exception e)
{
// Eats the exception since search remote is optional and log the error details as a warning.
RetailLogger.Log.CrtServicesStoreOperationServiceServiceRemoteTransactionSearchFailed(e);
}
// Merge results.
IEnumerable <Transaction> mergedTransactions = MultiDataSourcesPagingHelper.MergeResults(
remoteTransactions,
localTransactions,
GetTransactionMergingKey);
// Sorts merged transactions.
PagedResult <Transaction> mergedResults = MultiDataSourcesPagingHelper.GetPagedResult(mergedTransactions, settings.Paging, settings.Sorting);
return(new SearchJournalTransactionsServiceResponse(mergedResults));
}
}
