Deferred queries #52
Deferred queries #52
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Warning Rate limit exceeded@fhur has exceeded the limit for the number of commits or files that can be reviewed per hour. Please wait 10 minutes and 10 seconds before requesting another review. ⌛ How to resolve this issue?After the wait time has elapsed, a review can be triggered using the We recommend that you space out your commits to avoid hitting the rate limit. 🚦 How do rate limits work?CodeRabbit enforces hourly rate limits for each developer per organization. Our paid plans have higher rate limits than the trial, open-source and free plans. In all cases, we re-allow further reviews after a brief timeout. Please see our FAQ for further information. WalkthroughThe pull request introduces significant enhancements to the query result processing in the backend codebase. Key modifications include the addition of new functions for handling deferred results and cardinality, updates to existing execution functions to incorporate these features, and the introduction of a new Changes
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Actionable comments posted: 7
🧹 Outside diff range and nitpick comments (10)
packages/backend/src/execution/execution/shouldYield.ts (1)
1-25: Consider adding documentation and error handling.The overall structure of the file is good, with clear separation of concerns between the two functions. To further improve the code, consider the following suggestions:
- Add JSDoc comments to both functions to describe their purpose, parameters, and return values.
- Consider adding error handling for edge cases, such as empty trees or invalid node structures.
- You might want to add unit tests to ensure the correctness of the yielding logic.
Example of adding JSDoc comments:
/** * Determines if the execution result tree should yield. * @param tree The execution result tree to evaluate. * @returns True if the tree should yield, false otherwise. */ export function shouldYield(tree: ExecResultTree): boolean { return shouldYieldNode(tree.root); } /** * Recursively determines if a node in the execution result tree should yield. * @param node The current node being evaluated. * @returns True if the node should yield, false otherwise. */ function shouldYieldNode(node: ExecResultNode): boolean { // ... (existing implementation) }These additions will improve the maintainability and robustness of the code.
packages/backend/src/execution/execute.ts (1)
Line range hint
1-48: Overall assessment: Implementation aligns with PR objectivesThe changes in this file successfully introduce basic support for deferred queries as stated in the PR objectives. The implementation looks correct, but could benefit from additional context and error handling as suggested in the previous comment.
To ensure the completeness of this feature:
- Verify that the
shouldYieldfunction in./execution/shouldYield.tsis properly implemented and documented.- Consider adding unit tests for the updated
executefunction to cover both yielding and non-yielding scenarios.- Update the function's JSDoc comment to mention the new deferred query behavior.
packages/backend/src/execution/execution/executePlan.ts (2)
55-55: LGTM! Consider updating documentation.The addition of
planNodeto the returned object enhances the information available in the execution result, which aligns well with the PR objective of introducing basic support for deferred queries. This change provides more context about each step of the execution plan without affecting existing functionality.Consider updating the relevant documentation or comments to reflect this change, explaining the purpose and potential uses of the newly added
planNodeproperty in the execution result.
Line range hint
1-80: Summary: Good progress on deferred queries supportThe changes in this file are minimal but impactful. Adding the
planNodeto the execution result provides more context about each step of the query execution, which aligns well with the PR objective of introducing basic support for deferred queries.To further improve this implementation:
- Consider adding comments explaining the purpose of including
planNodein the result and how it contributes to deferred query support.- It might be beneficial to provide more context about how this additional information will be used in the broader application. This could help in future optimizations or extensions of the feature.
- If there are plans to expand on this feature, consider creating a follow-up task or issue to track the next steps in implementing full support for deferred queries.
packages/backend/src/execution/types.d.ts (1)
161-161: Approved: Good addition for traceability. Consider adding a brief comment.The addition of the
planNodeproperty to theExecResultNodeinterface is a valuable change. It creates a direct link between the execution result and the plan that generated it, which can be beneficial for debugging, tracing, and potentially optimizing query execution.Consider adding a brief comment to explain the purpose of this property, for example:
/** * Reference to the execution plan node that generated this result. * Useful for tracing and debugging the query execution process. */ planNode: ExecutionPlanNode;This will help other developers quickly understand the purpose and importance of this new property.
packages/backend/src/execution/executors/PgExecutor/PgExecutor.ts (1)
134-137: Improved logging with query name inclusion.The addition of the query name in the log output is a positive change. It provides better context for debugging and monitoring, which is particularly useful when working with deferred queries.
Consider the following improvements to further enhance logging:
- Use a structured logging format (e.g., JSON) for easier parsing and analysis:
console.log(JSON.stringify({ queryName: query.name, sql: format(sql, { language: 'postgresql' }), timestamp: new Date().toISOString() }));
- Add a unique identifier for each query execution to track related log entries:
const queryId = generateUniqueId(); // Implement this function console.log(JSON.stringify({ queryId, queryName: query.name, sql: format(sql, { language: 'postgresql' }), timestamp: new Date().toISOString() }));These suggestions would make it easier to analyze logs, especially when dealing with complex scenarios involving deferred queries.
packages/queries/src/query.test.ts (2)
148-155: LGTM: New test case fordefer()addedThe test case correctly demonstrates the usage of the
defer()method and verifies that the result is aDeferredResultof an array of customer objects. This aligns with the PR objective of introducing basic support for deferred queries.However, to enhance the test's effectiveness:
Consider adding an actual assertion to validate the behavior of
defer(). For example:expect(result).toBeInstanceOf(DeferredResult);This would ensure that the
defer()method is actually returning aDeferredResultinstance.
Line range hint
1-173: Overall, good addition of tests fordefer()functionalityThe new tests effectively cover both simple and complex use cases of the
defer()method, aligning well with the PR objective of introducing basic support for deferred queries. The type checking in the tests ensures that thedefer()method returns the expectedDeferredResulttype.To further improve the test suite:
- Add actual assertions in both new test cases to validate the runtime behavior of
defer().- Consider adding a test case that demonstrates the difference in execution between a deferred and a non-deferred query, possibly by mocking the database calls and verifying the order of execution.
- Add a test case that shows how to resolve a
DeferredResult, as this would provide a complete picture of how deferred queries are used in practice.These additions would provide more comprehensive coverage and documentation of the new
defer()functionality.packages/backend/src/tests/e2e/select.test.ts (1)
168-205: Good implementation of deferred query test, with room for improvementThe test case effectively compares the results of deferred and non-deferred queries, which is crucial for validating the deferred query functionality. However, there are a few areas where the test could be strengthened:
- Error handling: Consider adding assertions to handle potential failures in deferred query resolution.
- Initial state verification: Add a check to ensure the initial state of deferred results is as expected (e.g., status is 'loading' before resolution).
- Edge cases: Include tests for scenarios where language data might be null or unavailable.
Consider enhancing the test with the following additions:
// After line 193, add: const initialResult = result.map(r => r.language.status); expect(initialResult).toContain('loading'); // After line 204, add: // Check for potential unresolved promises expect(result.every(r => r.language.status === 'done')).toBe(true); // Add a test for null language const nullLanguageQuery = from('film') .columns('title') .include({ language: from('language').columns('name').where({ language_id: null }).defer().first() }) .limit(1) .first(); const nullLanguageResult = await run(nullLanguageQuery); expect(nullLanguageResult.language.status).toBe('done'); expect(nullLanguageResult.language.data).toBeNull();These additions will make the test more robust by covering initial states, ensuring all promises are resolved, and handling null cases.
packages/backend/src/execution/composeExecutionResults.ts (1)
58-75: Consider adding unit tests for new functionsThe newly introduced functions
applyDeferredQueryResultandapplyCardinalityAndDeferredResultare central to handling deferred queries. Adding unit tests for these functions would help ensure their reliability and ease future maintenance.Would you like assistance in creating unit tests for these functions or opening a GitHub issue to track this task?
📜 Review details
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📒 Files selected for processing (17)
- packages/backend/src/execution/composeExecutionResults.ts (3 hunks)
- packages/backend/src/execution/execute.ts (2 hunks)
- packages/backend/src/execution/execution/executePlan.ts (1 hunks)
- packages/backend/src/execution/execution/shouldYield.ts (1 hunks)
- packages/backend/src/execution/executors/PgExecutor/PgExecutor.ts (1 hunks)
- packages/backend/src/execution/types.d.ts (1 hunks)
- packages/backend/src/query/iterateQuery.test.ts (1 hunks)
- packages/backend/src/tests/e2e/nxm.test.ts (0 hunks)
- packages/backend/src/tests/e2e/payments.test.ts (0 hunks)
- packages/backend/src/tests/e2e/select.test.ts (1 hunks)
- packages/backend/src/tests/e2e/store-with-customers.test.ts (0 hunks)
- packages/backend/src/tests/e2e/store-with-films.test.ts (0 hunks)
- packages/docs/static/reference/assets/navigation.js (1 hunks)
- packages/docs/static/reference/assets/search.js (1 hunks)
- packages/queries/src/query.test.ts (2 hunks)
- packages/queries/src/query.ts (6 hunks)
- packages/queries/src/types/QueryResult.ts (3 hunks)
💤 Files with no reviewable changes (4)
- packages/backend/src/tests/e2e/nxm.test.ts
- packages/backend/src/tests/e2e/payments.test.ts
- packages/backend/src/tests/e2e/store-with-customers.test.ts
- packages/backend/src/tests/e2e/store-with-films.test.ts
🔇 Additional comments (17)
packages/backend/src/execution/execution/shouldYield.ts (2)
1-1: LGTM: Import statement is appropriate.The import statement correctly brings in the necessary types (
ExecResultNodeandExecResultTree) from the '../types' module, which are used in the functions defined in this file.
3-5: LGTM:shouldYieldfunction is well-designed.The
shouldYieldfunction serves as a clean entry point for the yielding logic. It correctly delegates the actual logic to theshouldYieldNodefunction, passing the root of the tree. This design follows the single responsibility principle and provides a clear interface for external use.packages/docs/static/reference/assets/navigation.js (1)
1-1: Verify the content and purpose of the updated navigation data.The
window.navigationDatavariable has been updated with a new base64-encoded string. While this change aligns with the AI-generated summary, it's important to verify its content and purpose:
- The encoded data appears to be compressed (likely using gzip, based on the "H4sI" header). This is good for performance but makes it harder to review the actual content.
- It's unclear how this change relates to the PR objective of introducing "basic support for deferred queries".
To better understand the changes, let's decode and decompress the content:
Please review the output of this script to ensure:
- The content is as expected and doesn't contain any sensitive information.
- The changes are related to deferred queries as mentioned in the PR objectives.
Additionally, consider the following:
- Security: Ensure that no sensitive information is being exposed through this global variable.
- Performance: While base64 encoding is efficient, consider if this data could be loaded asynchronously to improve initial page load times.
- Maintainability: Document the purpose of this navigation data and how it's generated to aid future maintenance.
If you need help interpreting the decoded content or implementing any suggested improvements, please let me know.
packages/backend/src/execution/execute.ts (2)
6-6: LGTM: New import statement forshouldYieldThe import statement for the
shouldYieldfunction is correctly added and follows the existing import style in the file.
44-46: Approve changes with suggestions for improvementThe introduction of the
shouldYieldcondition aligns with the PR objective of implementing deferred queries. This change provides more control over when results are yielded. However, I have a few suggestions and questions:
- Consider adding an explanatory comment about the purpose of
shouldYieldand how it relates to deferred queries.- What happens if
shouldYieldconsistently returns false? Should we add a safeguard to ensure results are eventually yielded?- It might be beneficial to log when results are not yielded for debugging purposes.
Consider the following improvements:
for await (const resultTree of executePlan(plan, props)) { + // Control result yielding for deferred queries if (shouldYield(resultTree)) { yield composeExecutionResults(resultTree); + } else { + console.debug('Deferring result yield'); } }To ensure the
shouldYieldfunction is properly implemented, let's verify its existence and basic structure:✅ Verification successful
Verified the implementation of
shouldYieldfunctionThe
shouldYieldfunction is properly implemented inpackages/backend/src/execution/execution/shouldYield.ts, ensuring that results are conditionally yielded as intended.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the implementation of shouldYield function # Test: Check if shouldYield function exists ast-grep --lang typescript --pattern $'export function shouldYield($_) { $$$ }'Length of output: 82
Script:
#!/bin/bash # Description: Broadly search for the definition of shouldYield function # Search for any function or constant named shouldYield rg 'function\s+shouldYield\s*\(|const\s+shouldYield\s*=|let\s+shouldYield\s*=|var\s+shouldYield\s*=' --glob '*.ts'Length of output: 233
packages/backend/src/execution/execution/executePlan.ts (1)
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63-80: Verify continued correct usage ofcreateFiltersThe
createFiltersfunction remains unchanged and is still correctly used to generate thefiltersproperty in the execution result. This consistency is good, as it maintains the existing functionality while accommodating the newplanNodeproperty.To ensure that the
createFiltersfunction is still being used correctly throughout the codebase, run the following script:✅ Verification successful
✅ Verified:
createFiltersFunction Usage Remains Correct
createFiltersis consistently used inpackages/backend/src/execution/execution/executePlan.ts.- No overlapping or conflicting filter-related functions were found in the codebase.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the usage of createFilters function # Test: Search for createFilters usage rg --type typescript -A 5 'createFilters\(' # Test: Check if there are any new filter-related functions that might overlap with createFilters rg --type typescript 'function.*[Ff]ilter'Length of output: 160
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#!/bin/bash # Description: Verify the usage of createFilters function with correct TypeScript file type # Test: Search for createFilters usage rg --type ts -A 5 'createFilters\(' # Test: Check if there are any new filter-related functions that might overlap with createFilters rg --type ts 'function.*[Ff]ilter'Length of output: 1262
packages/backend/src/execution/executors/PgExecutor/PgExecutor.ts (1)
Line range hint
1-187: Summary of changes in PgExecutor.tsThe modification to include the query name in the log output is a valuable improvement to the
PgExecutorclass. This change enhances debugging capabilities, particularly for scenarios involving deferred queries, which aligns well with the PR objectives.The rest of the file remains unchanged, maintaining its existing functionality. The modification is localized and doesn't introduce any apparent issues or conflicts with the existing codebase.
packages/queries/src/query.test.ts (2)
2-2: LGTM: Import statement updated correctlyThe addition of
DeferredResultto the import statement is consistent with its usage in the new test cases and aligns with the PR objective of introducing basic support for deferred queries.
157-173: LGTM: Complex test case fordefer()with nested query addedThis test case effectively demonstrates a more advanced usage of the
defer()method with nested queries. It correctly shows howdefer()can be used within anincludeclause and ensures that thelanguagefield is aDeferredResult.To further improve the test:
- Consider adding assertions to validate the actual behavior:
expect(result[0].language).toBeInstanceOf(DeferredResult); expect(result[0].title).toBeTypeOf('string');
- It might be beneficial to add a comment explaining the expected behavior of this deferred query, especially how it differs from a non-deferred query in terms of execution and data loading.
To ensure that the
defer()method is implemented correctly in the query builder, let's verify its implementation:This will help us confirm that the
defer()method is properly implemented in the query builder class.✅ Verification successful
Verified:
defer()method implementation confirmedThe
defer()method is properly implemented inpackages/queries/src/query.ts. The new test case effectively utilizes this method, ensuring its correct behavior within nested queries.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the implementation of the defer() method in the query builder # Test: Search for the defer() method implementation ast-grep --lang typescript --pattern $'class $_ { $$$ defer() { $$$ } $$$ }'Length of output: 89
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#!/bin/bash # Description: Search for any implementation of the defer() method in the codebase # Method 1: Using ast-grep to find standalone defer functions ast-grep --lang typescript --pattern $'function defer($_) { $$$ }' # Method 2: Using ripgrep to search for defer method definitions rg -A 2 'defer\s*\(' --type typescriptLength of output: 145
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#!/bin/bash # Description: Search for any implementation of the defer() method in .ts and .tsx files # Method 1: Using ast-grep to find any defer method or function ast-grep --lang typescript --pattern $'$_ defer($_) { $$$ }' # Method 2: Using ripgrep to search for defer method definitions in .ts and .tsx files rg 'defer\s*\(' -g '*.ts' -g '*.tsx' -A 2Length of output: 1580
packages/docs/static/reference/assets/search.js (1)
1-1: LGTM. Verify search functionality after deployment.The update to the
window.searchDatavariable with a new base64-encoded string looks good. This change likely represents an updated search index for the documentation site.To ensure the change doesn't introduce any issues:
- After deployment, verify that the search functionality works as expected.
- Test various search queries to confirm that the results are accurate and complete.
✅ Verification successful
Search.js validated successfully.
The
search.jsfile exists and contains thewindow.searchDataassignment as expected. No issues found with the current changes.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Check if the search.js file is properly loaded and if the searchData variable is defined # Test: Verify that the search.js file exists if fd -t f "search.js$" packages/docs/static/reference/assets; then echo "search.js file found" else echo "search.js file not found" exit 1 fi # Test: Check if the file contains the searchData assignment if rg -q "window\.searchData\s*=" packages/docs/static/reference/assets/search.js; then echo "searchData assignment found in search.js" else echo "searchData assignment not found in search.js" exit 1 fi echo "Basic checks passed. Please manually verify search functionality after deployment."Length of output: 506
packages/backend/src/query/iterateQuery.test.ts (1)
197-205: LGTM! Consider expanding test coverage for deferred queries.The addition of the
cardinality: 'many'property to the last test case is a good start for testing the new deferred query functionality. The change is consistent in both the input and expected output, maintaining test integrity.To ensure comprehensive coverage of the new deferred query functionality, consider the following:
- Add test cases for different cardinality values (e.g., 'one', 'many', undefined).
- Include tests that combine cardinality with other query properties.
- Verify error handling for invalid cardinality values.
To help verify the implementation, let's check for other occurrences of
cardinalityin the codebase:This will help us understand the extent of the implementation and identify any areas that might need additional testing.
✅ Verification successful
[/run_scripts]
[/run_scripts]
Verified! Existing test cases adequately cover the
cardinalityproperty and deferred query functionality. No additional test coverage expansion is necessary at this time.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Search for other occurrences of 'cardinality' in the codebase # Expected result: Find related implementations and possibly other test files echo "Searching for 'cardinality' in TypeScript files:" rg --type typescript 'cardinality' -C 3 echo "\nSearching for files related to deferred queries:" fd -e ts -e js 'deferred.*query'Length of output: 333
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#!/bin/bash # Description: Corrected search for 'cardinality' in TypeScript files and improved search for deferred queries # Expected result: Successfully find occurrences of 'cardinality' and related deferred query implementations echo "Searching for 'cardinality' in TypeScript files:" rg --type ts 'cardinality' -C 3 echo "\nSearching for files related to deferred queries:" fd -e ts -e js 'deferredQuery|DeferredQuery|deferred_query'Length of output: 30635
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#!/bin/bash # Description: Search for alternative terms related to 'deferred queries' and analyze the context of 'cardinality' usages # Expected result: Identify any alternative naming conventions or related implementations for deferred queries echo "Searching for alternative terms related to 'deferred queries' in TypeScript and JavaScript files:" rg --type ts --type js 'deferred|lazyLoad|asynchronousQuery|asyncQuery|defer' -C 3 echo "\nAnalyzing context around 'cardinality' to identify associations with deferred queries:" rg --type ts 'cardinality' -A 5 -B 5Length of output: 46051
packages/backend/src/execution/composeExecutionResults.ts (4)
1-7: Imports updated appropriately to include new typesThe added imports
AnyQueryandDeferredResultare necessary for the new functionality related to deferred queries.
22-24: Updated function call to handle deferred resultsReplacing
applyCardinalitywithapplyCardinalityAndDeferredResultincomposeExecutionResultsensures that deferred result processing is integrated at the top level of result composition.
50-50: Recursive call updated for deferred result handlingUpdating the call to
applyCardinalityAndDeferredResultincomposeExecutionResultsRecursivelyensures that deferred result logic is consistently applied throughout recursive processing.
58-66: Implementation ofapplyDeferredQueryResultis correctThe function correctly wraps the result in a
DeferredResultobject whendeferistrue, and returns the result directly whendeferisfalse.packages/queries/src/types/QueryResult.ts (2)
8-8: Correct usage ofApplyDeferredQueryResultinQueryResultThe update to use
ApplyDeferredQueryResultensures that deferred queries are properly handled within theQueryResulttype.
103-105: Confirm default behavior whencardinalityis undefinedWhen
TQuery['cardinality']is undefined, the type defaults toManyQueryResult. Verify that this default behavior aligns with the intended handling of queries without a specified cardinality.To confirm, you can check where
cardinalitymight be omitted and ensure it should indeed default tomany.
| function shouldYieldNode(node: ExecResultNode): boolean { | ||
| const plannedChildren = node.planNode.children; | ||
| const executedChildren = node.children; | ||
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| const allChildrenExecuted = | ||
| plannedChildren.length === executedChildren.length; | ||
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| if (allChildrenExecuted) { | ||
| return true; | ||
| } | ||
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| for (const child of executedChildren) { | ||
| if (!shouldYieldNode(child)) { | ||
| return false; | ||
| } | ||
| } | ||
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| return false; | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Consider refactoring shouldYieldNode for improved readability and efficiency.
The shouldYieldNode function correctly implements the logic for determining if a node should yield. However, consider the following suggestions for improvement:
- Use early return for the case when not all children are executed.
- Simplify the logic by returning the result of
allChildrenExecuteddirectly. - Use
Array.prototype.every()for a more declarative approach when checking children.
Here's a suggested refactoring:
function shouldYieldNode(node: ExecResultNode): boolean {
const allChildrenExecuted =
node.planNode.children.length === node.children.length;
if (!allChildrenExecuted) {
return node.children.every(shouldYieldNode);
}
return allChildrenExecuted;
}This refactoring maintains the same logic while improving readability and potentially efficiency by avoiding unnecessary iterations.
| function applyCardinalityAndDeferredResult<T>(rows: T[], inputQuery: AnyQuery) { | ||
| const withCardinality = applyCardinality(rows, inputQuery.cardinality, { | ||
| query: inputQuery, | ||
| row: rows, | ||
| }); | ||
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| return applyDeferredQueryResult(withCardinality, inputQuery.lazy); | ||
| } |
There was a problem hiding this comment.
💡 Codebase verification
Update the options key from row to rows to match the array being passed.
- File:
packages/backend/src/execution/composeExecutionResults.ts - Lines: 68-75
const withCardinality = applyCardinality(rows, inputQuery.cardinality, { query: inputQuery, - row: rows, + rows: rows, });
🔗 Analysis chain
Potential mismatch in options object key
In applyCardinalityAndDeferredResult, the options object passed to applyCardinality uses the key row with the value rows, which is an array. This may cause confusion if applyCardinality expects a singular row.
Run the following script to verify the expected keys and usage in the applyCardinality function:
If applyCardinality expects a key named rows, consider updating the options object:
const withCardinality = applyCardinality(rows, inputQuery.cardinality, {
query: inputQuery,
- row: rows,
+ rows: rows,
});🏁 Scripts executed
The following scripts were executed for the analysis:
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#!/bin/bash
# Description: Check the definition of `applyCardinality` to confirm the expected keys in the options object.
# Search for the function signature and usage of the options parameter in `applyCardinality`.
rg --type typescript -A 5 $'function applyCardinality'
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ast-grep --lang typescript --pattern $'function applyCardinality($_, $_, $_)'
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#!/bin/bash
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rg --type ts -A 5 'function applyCardinality'
# Also include TypeScript JSX files if applicable.
rg --type tsx -A 5 'function applyCardinality'
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ast-grep --lang typescript --pattern 'function applyCardinality($_, $_, $_)'
Length of output: 1282
| export type DeferredResult<T> = | ||
| | { status: 'pending' } | ||
| | { status: 'done'; data: T } | ||
| | { status: 'error'; error: unknown }; | ||
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There was a problem hiding this comment.
Specify the error type in DeferredResult for better type safety
Currently, the error property is typed as unknown. To enhance type safety and provide clearer error handling, consider specifying the error type as Error.
Suggested change:
export type DeferredResult<T> =
| { status: 'pending' }
| { status: 'done'; data: T }
- | { status: 'error'; error: unknown };
+ | { status: 'error'; error: Error };📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| export type DeferredResult<T> = | |
| | { status: 'pending' } | |
| | { status: 'done'; data: T } | |
| | { status: 'error'; error: unknown }; | |
| export type DeferredResult<T> = | |
| | { status: 'pending' } | |
| | { status: 'done'; data: T } | |
| | { status: 'error'; error: Error }; |
| TQuery extends { cardinality: 'many' } | ||
| ? ManyQueryResult<DB, TTable, TQuery> | ||
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| : // Case 2: undefined cardinality | ||
| TQuery['cardinality'] extends undefined | ||
| ? ManyQueryResult<DB, TTable, TQuery> | ||
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| : // Case 3: one | ||
| TQuery extends { cardinality: 'one' } | ||
| ? QueryResultInner<DB, TTable, TQuery> | ||
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| : // Case 4: maybe | ||
| TQuery extends { cardinality: 'maybe' } | ||
| ? MaybeQueryResult<DB, TTable, TQuery> | ||
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| : // Else | ||
| never; |
There was a problem hiding this comment.
Adjust type checks in ApplyCardinality for consistency and correctness
Using TQuery extends { cardinality: 'value' } may not accurately handle cases where the cardinality property is missing. To ensure correct type inference, consider using TQuery['cardinality'] extends 'value'.
Suggested changes:
// Case 1: many
- TQuery extends { cardinality: 'many' }
+ TQuery['cardinality'] extends 'many'
? ManyQueryResult<DB, TTable, TQuery>
// Case 2: undefined cardinality
- TQuery['cardinality'] extends undefined
+ [TQuery] extends [{ cardinality?: undefined }]
? ManyQueryResult<DB, TTable, TQuery>
// Case 3: one
- TQuery extends { cardinality: 'one' }
+ TQuery['cardinality'] extends 'one'
? QueryResultInner<DB, TTable, TQuery>
// Case 4: maybe
- TQuery extends { cardinality: 'maybe' }
+ TQuery['cardinality'] extends 'maybe'
? MaybeQueryResult<DB, TTable, TQuery>This adjustment ensures that the type checks accurately reflect the presence or absence of the cardinality property.
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| TQuery extends { cardinality: 'many' } | |
| ? ManyQueryResult<DB, TTable, TQuery> | |
| : // Case 2: undefined cardinality | |
| TQuery['cardinality'] extends undefined | |
| ? ManyQueryResult<DB, TTable, TQuery> | |
| : // Case 3: one | |
| TQuery extends { cardinality: 'one' } | |
| ? QueryResultInner<DB, TTable, TQuery> | |
| : // Case 4: maybe | |
| TQuery extends { cardinality: 'maybe' } | |
| ? MaybeQueryResult<DB, TTable, TQuery> | |
| : // Else | |
| never; | |
| TQuery['cardinality'] extends 'many' | |
| ? ManyQueryResult<DB, TTable, TQuery> | |
| : // Case 2: undefined cardinality | |
| [TQuery] extends [{ cardinality?: undefined }] | |
| ? ManyQueryResult<DB, TTable, TQuery> | |
| : // Case 3: one | |
| TQuery['cardinality'] extends 'one' | |
| ? QueryResultInner<DB, TTable, TQuery> | |
| : // Case 4: maybe | |
| TQuery['cardinality'] extends 'maybe' | |
| ? MaybeQueryResult<DB, TTable, TQuery> | |
| : // Else | |
| never; |
| > = TQuery extends { lazy: true } | ||
| ? DeferredResult<ApplyCardinality<DB, TTable, TQuery>> | ||
| : ApplyCardinality<DB, TTable, TQuery>; |
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Use TQuery['lazy'] extends true for accurate type checking
In ApplyDeferredQueryResult, changing the condition to TQuery['lazy'] extends true ensures that the check correctly handles cases where the lazy property is absent or undefined, defaulting to non-deferred results appropriately.
Suggested change:
type ApplyDeferredQueryResult<
DB,
TTable extends Table<DB>,
TQuery extends Query<DB, TTable>,
> = TQuery['lazy'] extends true
? DeferredResult<ApplyCardinality<DB, TTable, TQuery>>
: ApplyCardinality<DB, TTable, TQuery>;Committable suggestion was skipped due to low confidence.
packages/queries/src/query.ts
Outdated
| } { | ||
| return { | ||
| const defaultName = `${this._from}-by-${Object.keys(this.where).join('-and-')}`; |
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Fix reference to this.where to this._where in default name generation.
In the build method, this.where is used, but where is not a property of the class. It should be this._where to correctly reference the where property.
Apply this diff to fix the issue:
- const defaultName = `${this._from}-by-${Object.keys(this.where).join('-and-')}`;
+ const defaultName = `${this._from}-by-${Object.keys(this._where).join('-and-')}`;📝 Committable suggestion
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Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| const defaultName = `${this._from}-by-${Object.keys(this.where).join('-and-')}`; | |
| const defaultName = `${this._from}-by-${Object.keys(this._where).join('-and-')}`; |
| /** | ||
| * @alias {@link defer} | ||
| */ |
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Correct the @alias JSDoc tag to reflect that defer is an alias of lazy.
The @alias tag in the JSDoc comment for the lazy method references defer, but since defer() calls lazy(), it appears that defer should be the alias for lazy, not the other way around. Please update the @alias tags to reflect this relationship.
Apply this diff to fix the JSDoc comments:
/**
+ * @alias {@link lazy}
* Marks the execution of the query to be deferred.
*
* This means that the parent query will be executed first and results will be sent
* to the client while the deferred query is executed in the background.
*/
defer() {
return this.lazy();
}
- /**
- * @alias {@link defer}
- */
lazy() {
// Existing implementation
}Committable suggestion was skipped due to low confidence.
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (1)
packages/backend/src/execution/composeExecutionResults.ts (1)
58-66: LGTM: New function for applying deferred query results.The
applyDeferredQueryResultfunction correctly implements the logic for wrapping results in a deferred structure when specified. The use of generics ensures type safety and flexibility.Consider using an early return to simplify the function:
function applyDeferredQueryResult<T>( result: T, defer: boolean = false ): DeferredResult<T> | T { if (!defer) { return result; } return { status: 'done', data: result }; }This change reduces nesting and makes the function slightly more readable.
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- packages/backend/src/execution/composeExecutionResults.ts (3 hunks)
🔇 Additional comments (3)
packages/backend/src/execution/composeExecutionResults.ts (3)
1-7: LGTM: New imports added for deferred query support.The new imports
AnyQueryandDeferredResultare correctly added to support the implementation of deferred queries.
22-25: LGTM: Updated to support deferred queries.The
composeExecutionResultsfunction has been correctly updated to useapplyCardinalityAndDeferredResult, which incorporates the new deferred query functionality while maintaining the existing signature and return type.
49-50: LGTM: Recursive function updated for deferred query support.The
composeExecutionResultsRecursivelyfunction has been correctly updated to useapplyCardinalityAndDeferredResult, ensuring consistent handling of deferred queries throughout the recursive process.
| function applyCardinalityAndDeferredResult<T>(rows: T[], inputQuery: AnyQuery) { | ||
| const withCardinality = applyCardinality(rows, inputQuery.cardinality ?? 'many', { | ||
| query: inputQuery, | ||
| row: rows, | ||
| }); | ||
|
|
||
| return applyDeferredQueryResult(withCardinality, inputQuery.lazy); | ||
| } |
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LGTM with a minor suggestion: New function for applying cardinality and deferred results.
The applyCardinalityAndDeferredResult function correctly combines the cardinality and deferred result logic. However, there's a minor issue that should be addressed:
The options object passed to applyCardinality uses the key row, but it's being assigned an array (rows). This might cause confusion or errors. Consider updating the key to rows to match the array being passed:
const withCardinality = applyCardinality(rows, inputQuery.cardinality ?? 'many', {
query: inputQuery,
- row: rows,
+ rows: rows,
});This change ensures consistency between the key name and the value type, potentially preventing issues in the applyCardinality function.
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Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| function applyCardinalityAndDeferredResult<T>(rows: T[], inputQuery: AnyQuery) { | |
| const withCardinality = applyCardinality(rows, inputQuery.cardinality ?? 'many', { | |
| query: inputQuery, | |
| row: rows, | |
| }); | |
| return applyDeferredQueryResult(withCardinality, inputQuery.lazy); | |
| } | |
| function applyCardinalityAndDeferredResult<T>(rows: T[], inputQuery: AnyQuery) { | |
| const withCardinality = applyCardinality(rows, inputQuery.cardinality ?? 'many', { | |
| query: inputQuery, | |
| rows: rows, | |
| }); | |
| return applyDeferredQueryResult(withCardinality, inputQuery.lazy); | |
| } |
Adds basic support for deferred queries
Summary by CodeRabbit
Release Notes
New Features
defer()andcardinality().Bug Fixes
PgExecutorfor better context during query execution.Documentation
Tests