// NOTE: we don't have a need (yet?) to query commands, as we don't use them to
// recreate read models, nor we are using it for BI, so we just
// expose events.
public IEnumerable <IEvent> Query(QueryCriteria criteria)
{
var context = this.tableClient;
var query = new TableQuery <MessageLogEntity>()
.Where(x => x.Kind == StandardMetadata.EventKind);
var where = criteria.ToExpression();
if (where != null)
{
query = query.Where(where);
}
var table = context.GetTableReference(this.tableName);
return(table.ExecuteQuery(query.AsTableQuery())
.ToList()
.Select(e => this.serializer.Deserialize <IEvent>(e.Payload)));
}
/// <summary>
/// Gets the list of all partitions that have pending unpublished events.
/// </summary>
/// <returns>The list of all partitions.</returns>
public IEnumerable <string> GetPartitionsWithPendingEvents()
{
var query = new TableQuery <EventTableServiceEntity>()
.Where(
x =>
String.Compare(x.RowKey, UnpublishedRowKeyPrefix, StringComparison.Ordinal) >= 0 &&
String.Compare(x.RowKey, UnpublishedRowKeyPrefixUpperLimit, StringComparison.Ordinal) <= 0)
.Select(x => new { x.PartitionKey })
.AsTableQuery();
var result = new BlockingCollection <string>();
var continuationToken = new TableContinuationToken();
var queryResult = query.AsTableQuery().ExecuteSegmented(continuationToken);
foreach (var key in queryResult.Results.Select(x => x.PartitionKey).Distinct())
{
result.Add(key);
}
return(result.ToList());
}
