public static void WriteDataset <T>(long locationId, string datasetName, T[] valueSet)
{
Contract.Requires(valueSet != null, nameof(valueSet));
long datasetId = -1;
try
{
datasetId = H5D.open(locationId, datasetName);
IOHelper.Write <T>(datasetId, valueSet, DataContainerType.Dataset);
}
finally
{
if (H5I.is_valid(datasetId) > 0)
{
H5D.close(datasetId);
}
}
}
private void OpenFile(string filePath, DateTime startDateTime, IList <ChannelContext> channelContextSet)
{
long propertyId = -1;
long datasetId = -1;
long groupId = -1;
bool isNew;
try
{
_fileId = -1;
// open file
if (File.Exists(filePath))
{
_fileId = H5F.open(filePath, H5F.ACC_RDWR, H5P.DEFAULT);
if (_fileId < 0)
{
try
{
File.Copy(filePath, filePath + ".backup");
}
catch
{
//
}
}
}
// create file
if (_fileId < 0)
{
propertyId = H5P.create(H5P.FILE_CREATE);
H5P.set_userblock(propertyId, USERBLOCK_SIZE);
_fileId = H5F.create(filePath, H5F.ACC_TRUNC, propertyId);
}
if (_fileId < 0)
{
throw new Exception($"{ ErrorMessage.Mat73Writer_CouldNotOpenOrCreateFile } File: { filePath }.");
}
// prepare channels
foreach (ChannelContext channelContext in channelContextSet)
{
var periodInSeconds = (ulong)Math.Round(_settings.FilePeriod.TotalSeconds, MidpointRounding.AwayFromZero);
var samplesPerSecond = channelContext.ChannelDescription.SampleRate.SamplesPerSecond;
(var chunkLength, var chunkCount) = GeneralHelper.CalculateChunkParameters(periodInSeconds, samplesPerSecond);
this.PrepareChannel(_fileId, channelContext.ChannelDescription, chunkLength, chunkCount);
}
// info
groupId = this.OpenOrCreateStruct(_fileId, "/info").GroupId;
(datasetId, isNew) = this.OpenOrCreateChannel(groupId, "last_completed_chunk", 1, 1);
if (isNew)
{
IOHelper.Write(datasetId, new double[] { -1 }, DataContainerType.Dataset);
}
// text entries
_textEntrySet[2].Content = startDateTime.ToString("yyyy-MM-ddTHH-mm-ss");
this.PrepareAllTextEntries(_textEntrySet);
}
finally
{
if (H5I.is_valid(datasetId) > 0)
{
H5D.close(datasetId);
}
if (H5I.is_valid(propertyId) > 0)
{
H5P.close(propertyId);
}
if (H5I.is_valid(groupId) > 0)
{
H5G.close(groupId);
}
H5F.flush(_fileId, H5F.scope_t.GLOBAL);
// write preamble
if (H5I.is_valid(_fileId) > 0)
{
H5F.close(_fileId);
this.WritePreamble(filePath);
}
}
_fileId = H5F.open(filePath, H5F.ACC_RDWR);
}
public static void PrepareAttribute <T>(long locationId, string name, T[] valueSet, ulong[] dimensionLimitSet, bool initializeAttribute, [CallerMemberName()] string callerMemberName = "")
{
Contract.Requires(valueSet != null, nameof(valueSet));
long fileId = -1;
long typeId = -1;
long attributeId = -1;
ulong[] dimensionSet;
bool isNew;
Type elementType;
dimensionSet = new ulong[] { 0 };
elementType = typeof(T);
try
{
fileId = H5I.get_file_id(locationId);
// create attribute
typeId = TypeConversionHelper.GetHdfTypeIdFromType(fileId, elementType);
(attributeId, isNew) = IOHelper.OpenOrCreateAttribute(locationId, name, typeId, (ulong)valueSet.LongLength, dimensionLimitSet);
// write attribute data (regenerate attribute if necessary)
if (initializeAttribute)
{
ulong[] oldValueSetCount;
if (!isNew && callerMemberName != nameof(IOHelper.PrepareAttribute))
{
oldValueSetCount = IOHelper.PrepareAttributeValueSet(attributeId, ref valueSet, false);
}
else
{
oldValueSetCount = new ulong[1] {
(ulong)valueSet.Count()
}
};
if (valueSet.Count() == (int)oldValueSetCount[0])
{
IOHelper.Write(attributeId, valueSet, DataContainerType.Attribute);
}
else
{
H5A.close(attributeId);
H5A.delete(locationId, name);
IOHelper.PrepareAttribute(locationId, name, valueSet, dimensionLimitSet, true);
}
}
}
finally
{
if (H5I.is_valid(attributeId) > 0)
{
H5A.close(attributeId);
}
if (H5I.is_valid(typeId) > 0)
{
H5T.close(typeId);
}
if (H5I.is_valid(fileId) > 0)
{
H5F.close(fileId);
}
}
}