public IEnumerable <StoreStatistics> GetStatistics()
{
if (!_persistenceManager.FileExists(GetStatisticsHeaderFile()))
{
yield break;
}
using (var headerStream = _persistenceManager.GetInputStream(GetStatisticsHeaderFile()))
{
using (var headerReader = new BinaryReader(headerStream))
{
using (
var recordStream =
_persistenceManager.GetInputStream(GetStatisticsLogFile()))
{
long offset = headerStream.Length - StoreStatisticsHeaderRecord.RecordSize;
while (offset >= 0)
{
headerReader.BaseStream.Seek(offset, SeekOrigin.Begin);
var header = StoreStatisticsHeaderRecord.Load(headerReader);
recordStream.Seek(header.StartOffset, SeekOrigin.Begin);
var recordReader = new StreamReader(recordStream);
var record = StoreStatisticsRecord.Load(recordReader);
yield return
(new StoreStatistics(header.CommitNumber, header.Timestamp, record.TotalTripleCount,
record.PredicateTripleCounts));
offset -= StoreStatisticsHeaderRecord.RecordSize;
}
}
}
}
}
