Comments (4)
This would help allot, since currently setUpdatedAt()
is not invoked in some places and therefor update times are sometimes wrong.
There is only one problem: If we want to preserve the creation time, when one entity is copied from one fine to another, we must find a way to overwrite the ctime inside the hdf5 file.
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not sure if I understand the issue: why & when to copy an entity from one file to another?
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I had a look into[1] this and it is quite disappointing. Apparently support for everything but ctime for datasets is lacking:
% ./playground [master|◯]
--- group
atime: 0 Thu Jan 1 01:00:00 1970
mtime: 0 Thu Jan 1 01:00:00 1970
ctime: 0 Thu Jan 1 01:00:00 1970
btime: 0 Thu Jan 1 01:00:00 1970
---
--- dataset
atime: 0 Thu Jan 1 01:00:00 1970
mtime: 0 Thu Jan 1 01:00:00 1970
ctime: 1393954764 Tue Mar 4 18:39:24 2014
btime: 0 Thu Jan 1 01:00:00 1970
---
--- file
atime: 0 Thu Jan 1 01:00:00 1970
mtime: 0 Thu Jan 1 01:00:00 1970
ctime: 0 Thu Jan 1 01:00:00 1970
btime: 0 Thu Jan 1 01:00:00 1970
---
See also this conversation from June, 2012: [2]
This is basically a showstopper for this bug -> not a target for Milestone First Alpha.
[1] Compete hack as a test: https://gist.github.com/gicmo/9351530
[2] http://permalink.gmane.org/gmane.comp.programming.hdf/3580
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Indeed a bit disappointing and I would not like to implement created_at in a different way than the updated_at time-stamp...
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Related Issues (20)
- Port to C++17
- Optimize reading of old style values
- Add UUIDs to File objects HOT 1
- UTF-8 for strings
- DataView should check the dimensionality of offset and count HOT 3
- Bump file format version HOT 1
- MultiTag: Convenience constructor that doesn't require DataArray HOT 1
- Reorganise documentation HOT 2
- Wildcard tagging
- Build fails with Boost 1.71 HOT 2
- Tagging DataArrays with different dimenisionalities HOT 3
- Tag extent behaviour [discussion] HOT 1
- Functions for Column Dimensions HOT 3
- DataFrame: need API to query number of colums without fetching the column
- DataFrame: need API to get a single column
- Update Appveyor configuration
- Tag data retrieval specification HOT 2
- Dimensions with linking for ticks and labels
- outdated wiki information HOT 2
- new h5py version doesn't support numerical event labels HOT 2
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