public void AppendStatistics(StoreStatistics statistics)
{
using (
var headerWriter =
new BinaryWriter(_persistenceManager.GetOutputStream(GetStatisticsHeaderFile(), FileMode.Append)))
{
using (
var recordWriter =
new StreamWriter(_persistenceManager.GetOutputStream(GetStatisticsLogFile(),
FileMode.Append)))
{
var recordStart = recordWriter.BaseStream.Position;
var record = new StoreStatisticsRecord(statistics.CommitNumber, statistics.TripleCount,
statistics.PredicateTripleCounts);
var header = new StoreStatisticsHeaderRecord(statistics.CommitNumber, statistics.CommitTime,
recordStart);
record.Save(recordWriter);
header.Save(headerWriter);
recordWriter.Flush();
headerWriter.Flush();
recordWriter.Close();
headerWriter.Close();
}
}
}
public void AppendStatistics(StoreStatistics statistics)
{
using (
var headerWriter =
new BinaryWriter(_persistenceManager.GetOutputStream(GetStatisticsHeaderFile(), FileMode.Append)))
{
using (
var recordWriter =
new StreamWriter(_persistenceManager.GetOutputStream(GetStatisticsLogFile(),
FileMode.Append)))
{
var recordStart = recordWriter.BaseStream.Position;
var record = new StoreStatisticsRecord(statistics.CommitNumber, statistics.TripleCount,
statistics.PredicateTripleCounts);
var header = new StoreStatisticsHeaderRecord(statistics.CommitNumber, statistics.CommitTime,
recordStart);
record.Save(recordWriter);
header.Save(headerWriter);
recordWriter.Flush();
headerWriter.Flush();
recordWriter.Close();
headerWriter.Close();
}
}
}
public static StoreStatisticsHeaderRecord Load(BinaryReader dataStream)
{
var ret = new StoreStatisticsHeaderRecord();
ret.Read(dataStream);
return(ret);
}
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;
}
}
}
}
}
public static StoreStatisticsHeaderRecord Load(BinaryReader dataStream)
{
var ret = new StoreStatisticsHeaderRecord();
ret.Read(dataStream);
return ret;
}
