WIP: Optimize run_sql by avoiding cloning immutable data#1110
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WIP: Optimize run_sql by avoiding cloning immutable data#1110
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- URL and POST parameters are now immutable after request initialization
- SET command creates user-defined variables in separate namespace
- Variable lookup: SET variables shadow request parameters
- Added sqlpage.variables('set') to inspect user-defined variables
- Simplified API: most functions now use &RequestInfo instead of &mut
- All tests passing (151 total)
- Warn when both URL and POST have same variable name - Warn when $var is used for POST-only variable (should use :var)
No need to branch on whether variables are provided since we clone in both cases anyway.
This reverts commit 60f5a05.
This is a draft refactoring to avoid cloning large immutable data (headers, cookies, body) when creating nested execution contexts in run_sql(). Changes: - RequestInfo now contains only immutable request data - ExecutionContext wraps Rc<RequestInfo> + mutable execution state - Avoids cloning potentially large strings in nested run_sql() calls Status: NOT COMPILING YET - this is work in progress
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STATUS: DRAFT / WORK IN PROGRESS - Does not compile yet
This PR refactors the request handling to separate immutable request data from mutable execution state, avoiding unnecessary cloning of potentially large data structures.
Problem
Currently,
run_sql()clones the entireRequestInfowhich includes:This is wasteful since only
set_variablesandclone_depthneed to be cloned.Solution
Split into two structures:
RequestInfo: immutable request data (wrapped inRc)ExecutionContext: mutable execution state + reference to RequestInfoBenefits
run_sql()callsStatus
Based on: #1109