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Tentative refactor of SQLite.jl #295

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Tentative refactor of SQLite.jl #295

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metab0t
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@metab0t metab0t commented Jun 5, 2022

  1. Use Clang.jl to generate API bindings (a new C module).
  2. Separate functions to different files for clarity. (I feel that monotholic code structure is not friendly for maintainers)
  3. Use WeakKeyDict to record prepared statements of a DB, so that statements can be GCed independently from DB. (Currently SQLite.Stmt does not contain the pointer to sqlite3_stmt which is cubersome)
  4. Only ONE public API change: Change SQLite.execute to SQLite.direct_execute to avoid name confusion with DBInterface.execute.

The tests are almost unchanged and all passed on my machine.

Should fix #278 and provides a better basis for #284.

I can separate it into smaller PRs if it is needed.

metab0t added 3 commits June 5, 2022 14:58
@metab0t
Tentative refactor of SQLite.jl
d199ad6 
1. Use Clang.jl to generate API bindings (a new C module).
2. Separate functions to different files for clarity.
3. Use WeakKeyDict to record prepared statements of a DB, so that statements can be GCed without influence.
4. Only public API change: Change `SQLite.execute` to `SQLite.direct_execute` to avoid name confusion with `DBInterface.execute`.
@metab0t
Small fix
f22cbc1
@metab0t
Simplify sqliteerror
2d08268
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metab0t commented Jun 5, 2022

For SQLite.execute we can add a fallback to SQLite.direct_execute so that exposed API is nearly not affected.

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codecov bot commented Jun 10, 2022 •
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Codecov Report

Merging #295 (bc222c8) into master (c1ede93) will decrease coverage by 31.20%.
The diff coverage is 51.52%.

@@             Coverage Diff             @@
##           master     #295       +/-   ##
===========================================
- Coverage   85.99%   54.78%   -31.21%     
===========================================
  Files           5       12        +7     
  Lines         707     1086      +379     
===========================================
- Hits          608      595       -13     
- Misses         99      491      +392
Impacted Files Coverage Δ
src/SQLite.jl 100.00% <ø> (+3.86%) ⬆️
src/capi.jl 15.75% <15.75%> (ø)
src/UDF.jl 85.93% <85.18%> (-0.11%) ⬇️
src/bind.jl 85.50% <85.50%> (ø)
src/base.jl 94.11% <94.11%> (ø)
src/db_and_stmt.jl 98.00% <98.00%> (ø)
src/table.jl 98.91% <98.91%> (ø)
src/db_functions.jl 100.00% <100.00%> (ø)
src/index.jl 100.00% <100.00%> (ø)
src/query.jl 100.00% <100.00%> (ø)
... and 2 more

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quinnj
quinnj reviewed Jun 10, 2022
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test/runtests.jl
@@ -42,7 +42,7 @@ Copy test sqlite file to temp directory, path `test.sqlite`,
overwrite file if necessary and set permissions.
"""
function setup_clean_test_db(f::Function, args...)
dbfile = joinpath(dirname(pathof(SQLite)), "../test/Chinook_Sqlite.sqlite")
dbfile = joinpath(@__DIR__, "Chinook_Sqlite.sqlite")
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can we revert this change? I like the pathof style since it makes it much easier for running this locally, step-wise, in the REPL.

quinnj
quinnj reviewed Jun 10, 2022
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src/SQLite.jl
using Tables

include("capi.jl")
import .C as C
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I think this can just be import .C since the as isn't renaming it at all. This is also causing test failures for Julia 1.3 (as didn't exist then). I'm also fine bumping the Julia version up to 1.6 though.

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quinnj commented Jun 10, 2022

This looks great! Thanks for doing this @metab0t! I really like the auto-generated C bindings. In the future, just as an FYI, it can make reviewing much easier to avoid reorganizing files in addition to lots of changes. I don't really mind the file reorganizing, but from a git diff perspective, it can be much easier to make all the proposed changes leaving files as-is, and then do the file reorganization in a separate PR.

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metab0t commented Jun 10, 2022 •
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Thanks for reviewing!

My current plan is to separate it into 3 PRs:

  1. C bindings and other internal changes in place without influencing API. (Requires julia 1.6 LTS)
  2. File reorganization
  3. Rename or deprecate SQLite.execute

I will close this huge PR after I finish the separation.

@metab0t metab0t mentioned this pull request Jun 10, 2022
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quinnj commented Oct 6, 2022

@metab0t , good to close this now?

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metab0t commented Oct 7, 2022

Yes, it can be closed.

@metab0t metab0t closed this Oct 7, 2022
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DBInterface.execute and SQLite.execute causes confusion
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