re: https://github.com/Unidata/netcdf-c/issues/2733
When addressing the above issue, I noticed that there was a disconnect
in NCZarr between nc_set_chunk_cache and nc_set_var_chunk cache.
Specifically, setting nc_set_chunk_cache had no impact on the per-variable cache parameters when nc_set_var_chunk_cache was not used.
So, modified the NCZarr code so that the per-variable cache parameters are set in this order (#1 is first choice):
1. The values set by nc_set_var_chunk_cache
2. The values set by nc_set_chunk_cache
3. The defaults set by configure.ac
re: PR https://github.com/Unidata/netcdf-c/pull/2716).
re: Issue https://github.com/Unidata/netcdf-c/issues/2189
The basic change is to make use of the fact that HDF5 automatically suppresses optional filters when an attempt is made to apply them to variable-length typed arrays.
This means that e.g. ncdump or nccopy will properly see meaningful data.
Note that if a filter is defined as HDF5 mandatory, then the corresponding variable will be suppressed and will be invisible to ncdump and nccopy.
This functionality is also propagated to NCZarr.
This PR makes some minor changes to PR https://github.com/Unidata/netcdf-c/pull/2716 as follows:
* Move the test for filter X variable-length from dfilter.c down into the dispatch table functions.
* Make all filters for HDF5 optional rather than mandatory so that the built-in HDF5 test for filter X variable-length will be invoked.
The test case for this was expanded to verify that the filters are defined, but suppressed.
re: PR https://github.com/Unidata/netcdf-c/pull/2655
This PR modifies the transient types PR so that all created
transient types are given a created unique name (within a
group). The form of the name is "_Anonymous<Class>NN". The class
is the user-defined type class: Enum, Compound, Opaque, or
Vlen. NN is an integer identifier to ensure uniqueness.
Additionally, this was applied to DAP/4 anonymous dimensions.
This also required some test baseline data changes.
The transient test case is modified to verify that the name exists.
re: Discussion https://github.com/Unidata/netcdf-c/discussions/2554
re: PR https://github.com/Unidata/netcdf-c/pull/2231
re: Issue https://github.com/Unidata/netcdf-c/issues/2189
After some discussion, the issue of applying filters on variables
whose type is not fixed size, was resolved as follows:
1. A call to nc_def_var_filter will ignore such filters, but will issue a log warning.
2. Loading (from an existing file) a variable whose type is not fixed-size and which has filters, will cause the variable to be suppressed.
This PR enforces those rules.
### Misc. Other changes
* Add a test case to test the vlen change.
* Make some minor clean-ups in various cmake and automake files.
* Remove unused test
