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[c++] SOMAColumn [WIP] #3329

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SOMAColumn provides an abstraction over TileDB attributes and dimensions and exposes a common interface for all columns regardless of type. Subclasses of SOMAColumn can implement complex indexing mechanism through additional dimensions and encapsulate all that logic in one place and make it modular.

Subsequent PRs will add implementation for dimension and attributes.

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codecov bot commented Nov 18, 2024

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.74%. Comparing base (ca00d5b) to head (41fe82c).

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@@            Coverage Diff             @@
##             main    #3329      +/-   ##
==========================================
+ Coverage   85.64%   85.74%   +0.09%     
==========================================
  Files          57       57              
  Lines        6201     6201              
==========================================
+ Hits         5311     5317       +6     
+ Misses        890      884       -6     
Flag Coverage Δ
python 85.74% <ø> (+0.09%) ⬆️

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Components Coverage Δ
python_api 85.74% <ø> (+0.09%) ⬆️
libtiledbsoma ∅ <ø> (∅)
---- 🚨 Try these New Features:

Comment on lines 233 to 226
* @tparam T
* @param dim
* @param ranges
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These don't match the function template parameter/parameter names.

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@johnkerl johnkerl left a comment

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This looks like interesting work but it's not clear why it's being done.

You need a GitHub issue, or Shortcut link, in the description field.

From your GitHub branch name I can discover a Shortcut story number -- since this is an open-source project, please include within a GitHub issue the context that is necessary for anyone who is not a TileDB employee to understand what changes you're making here, and why.

This PR introduces new code without any unit tests, and no callsite from existing code that would exercise existing unit tests. It could be stamped now with guarantee of unit-test cases to follow, but, I'd be happier if you could offer at least a minimal set of tests.

*
* @section DESCRIPTION
*
* This file defines the SOMAColumn class.
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Please say what this class is for, what problem it solves. This comment, as is, doesn't tell anything that class SOMAColuimn { ... } doesn't.

In particular, up until there's been a 1-1 mapping of one soma column -> one tiledb dim or one tiledb attr. Here it appears (I'm still reading but it appears so far) that you are allowing for one-to-many mappings of one soma column -> more than one tiledb dim and/or more than one tiledb attr. A top-of-file comment here would need to explain this in at least several sentences' worth of detail.


/**
* @brief Select columns names to query (dim and attr). If the
* `if_not_empty` parameter is `true`, the column will be selected iff the
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"iff" is specialist mathematical jargon that non-mathematicians are unlikely to recognize. Please don't use it.

* from changing an empty list (all columns) to a subset of columns.
*
* @param query the ManagedQuery object to modify
* @param if_not_empty Prevent changing an "empty" selection of all columns
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Suggested change
* @param if_not_empty Prevent changing an "empty" selection of all columns
* @param if_not_empty Prevent changing an empty selection of all columns

libtiledbsoma/src/soma/soma_column.h Outdated Show resolved Hide resolved
Comment on lines 60 to 63
* @param ctx TileDB context
*/
SOMAColumn(const Context& ctx)
: ctx(ctx){};
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Should we take in a tiledb::Context or SOMAContext?

@XanthosXanthopoulos XanthosXanthopoulos changed the title [c++] SOMAColumn [c++] SOMAColumn [WIP] Nov 20, 2024
@XanthosXanthopoulos XanthosXanthopoulos marked this pull request as draft November 20, 2024 20:36
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[c++] Add an abstraction layer between SOMA columns and TileDB dimensions and attributes
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