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* Default Values struct Changes * corrected test * corrected few nits * test correction * correction of test files
* Default Value Sanitize Default Value function * corrected comments * corrected nits * Added comments * done * handled escape characters * added unit test of sanitizeDefaultValue * changes updated * removed comments * added line * added line
WalkthroughThe changes introduce a new Changes
Sequence Diagram(s)sequenceDiagram
participant MySQLInfoSchema
participant sanitizeDefaultValue
participant Column
MySQLInfoSchema->>sanitizeDefaultValue: Sanitize raw default value string
sanitizeDefaultValue-->>MySQLInfoSchema: Return cleaned default value
MySQLInfoSchema->>Column: Set DefaultValue{IsPresent, Value}
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🧰 Additional context used🧬 Code Graph Analysis (1)schema/schema.go (4)
🔇 Additional comments (20)
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WalkthroughThis PR introduces explicit support for column default values in the schema representation by adding a DefaultValue field to the Column struct. MySQL schema parsing is refactored to accurately extract and sanitize default values, improving their usability and correctness. Test coverage is expanded to validate the new default value handling and the sanitization logic, ensuring robust schema conversion and future extensibility for default value features. Changes
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PR Summary
Added support for handling default values in MySQL schema migration to Spanner, with a focus on proper representation and sanitization of default value strings.
- Added
DefaultValuestruct in/schema/schema.goto track presence and value of column defaults - Added
sanitizeDefaultValuefunction in/sources/mysql/infoschema.goto clean MySQL-specific formatting from default values - Potential bug:
ignored.Defaultis unconditionally set to false in MySQL schema processing - Added test coverage for default value handling in
/sources/mysql/infoschema_test.go - Missing documentation for the new default value functionality and edge cases
3 file(s) reviewed, 1 comment(s)
Edit PR Review Bot Settings | Greptile
| } | ||
| } | ||
| ignored.Default = colDefault.Valid | ||
| ignored.Default = false |
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logic: This appears incorrect. ignored.Default should reflect whether default values should be ignored, not always be false. Consider using !colDefault.Valid instead.
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@trag-bot didn't find any issues in the code! ✅✨ |
Pull request summary
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2 participants
Author Description
Fixes #<issue_number_goes_here>
Summary By MatterAI
🔄 What Changed
This PR introduces support for default values in database columns. Two main changes were implemented:
DefaultValuestruct to the schema package to represent default values for columnssanitizeDefaultValuefunction to clean up default values from MySQL information schema🔍 Impact of the Change
The changes enable the migration tool to properly handle and preserve default values from source databases. This is particularly important for MySQL databases where default values in the information schema contain extra characters that need to be sanitized.
📁 Total Files Changed
schema/schema.go: Added the DefaultValue structsources/mysql/infoschema.go: Modified to capture default values and implemented sanitizeDefaultValue functionsources/mysql/infoschema_test.go: Updated tests to verify default value handling🧪 Test Added
sanitizeDefaultValuefunction that verify handling of various special characters and escape sequences🔒 Security Vulnerabilities
No security vulnerabilities were introduced or addressed in this PR.
Quality Recommendations
Add more comprehensive documentation for the DefaultValue struct to explain its purpose and usage
Consider adding validation for default values to ensure they are compatible with the target database
The sanitizeDefaultValue function could benefit from more robust error handling for edge cases
Consider extracting the string replacement logic in sanitizeDefaultValue into smaller, more focused functions for better maintainability
Sequence Diagram
sequenceDiagram title Default Value Handling in Spanner Migration Tool participant Client as Migration Client participant Schema as schema.go participant InfoSchema as infoschema.go participant SanitizeFunc as sanitizeDefaultValue() participant DB as MySQL Database Client->>InfoSchema: GetColumns(conv, table) InfoSchema->>DB: Query column metadata DB-->>InfoSchema: Return column info (including default values) loop For each column InfoSchema->>InfoSchema: Process column metadata alt Column has default value InfoSchema->>SanitizeFunc: sanitizeDefaultValue(colDefault.String) SanitizeFunc-->>InfoSchema: Return cleaned default value end InfoSchema->>Schema: Create Column with DefaultValue struct end InfoSchema-->>Client: Return processed columnsEntelligenceAI PR Summary
Summary by CodeRabbit
New Features
Bug Fixes
Tests