public static (long DatasetId, bool IsNew) OpenOrCreateDataset(long locationId, string datasetPath, long datasetTypeId, Func <long> createDatasetCallback)
{
Contract.Requires(createDatasetCallback != null);
long datasetId = -1;
long datasetTypeId_actual = -1;
bool isNew;
try
{
if (IOHelper.CheckLinkExists(locationId, datasetPath))
{
datasetId = H5D.open(locationId, datasetPath);
datasetTypeId_actual = H5D.get_type(datasetId);
if (H5T.equal(datasetTypeId_actual, datasetTypeId) <= 0)
{
throw new Exception($"{ ErrorMessage.IOHelper_DataTypeMismatch } Dataset: '{ datasetPath }'.");
}
isNew = false;
}
else
{
datasetId = createDatasetCallback.Invoke();
isNew = true;
}
if (H5I.is_valid(datasetId) <= 0)
{
throw new Exception($"{ ErrorMessage.IOHelper_CouldNotOpenOrCreateDataset } Dataset: '{ datasetPath }'.");
}
}
finally
{
if (H5I.is_valid(datasetTypeId_actual) > 0)
{
H5T.close(datasetTypeId_actual);
}
}
return(datasetId, isNew);
}
public static (long GroupId, bool IsNew) OpenOrCreateGroup(long locationId, string groupPath)
{
long groupId = -1;
long propertyId = -1;
bool isNew;
try
{
if (IOHelper.CheckLinkExists(locationId, groupPath))
{
groupId = H5G.open(locationId, groupPath);
isNew = false;
}
else
{
propertyId = H5P.create(H5P.LINK_CREATE);
H5P.set_create_intermediate_group(propertyId, 1);
groupId = H5G.create(locationId, groupPath, propertyId);
isNew = true;
}
if (H5I.is_valid(groupId) <= 0)
{
throw new Exception($"{ ErrorMessage.IOHelper_CouldNotOpenOrCreateGroup } Group name: '{ groupPath }'.");
}
}
finally
{
if (H5I.is_valid(propertyId) > 0)
{
H5P.close(propertyId);
}
}
return(groupId, isNew);
}
