gemini-code-assist[bot] commented on PR #36986: URL: https://github.com/apache/beam/pull/36986#issuecomment-3609070058
## Summary of Changes Hello @claudevdm, I'm Gemini Code Assist[^1]! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request significantly enhances Apache Beam's integration with BigQuery by providing more granular control over how high-precision timestamp data is handled. It allows users to define the desired precision when converting BigQuery's `TIMESTAMP(12)` columns into Beam's schema types, ensuring data integrity and flexibility for applications requiring specific timestamp resolutions. The changes also refine the internal mechanisms for parsing and formatting timestamp values between BigQuery and Beam's data models. ### Highlights * **BigQuery TIMESTAMP(12) Mapping**: Adds the capability to map BigQuery `TIMESTAMP(12)` columns, which offer picosecond precision, to various Beam logical timestamp types: `Timestamp.MILLIS`, `Timestamp.MICROS`, `Timestamp.NANOS`, or as a `STRING` type to preserve full precision. * **Timestamp Conversion**: Introduces improved conversion logic for timestamps, allowing BigQuery `TableRow` timestamps (formatted as UTC strings) to be accurately mapped to Beam rows with the appropriate `Timestamp` logical type. * **Configurable Precision**: A new `TimestampPrecision` enum and a `picosecondTimestampMapping` option have been added to `BigQueryUtils.SchemaConversionOptions`, enabling users to specify the desired precision for `TIMESTAMP(12)` columns, defaulting to nanoseconds. * **Variable Precision Formatter**: A new `VAR_PRECISION_FORMATTER` is introduced to handle parsing of timestamp strings with varying numbers of decimal places for nanoseconds, ensuring robust conversion from BigQuery string representations to Java `Instant` objects. <details> <summary><b>Using Gemini Code Assist</b></summary> <br> The full guide for Gemini Code Assist can be found on our [documentation page](https://developers.google.com/gemini-code-assist/docs/review-github-code), here are some quick tips. <b>Invoking Gemini</b> You can request assistance from Gemini at any point by creating a comment using either `/gemini <command>` or `@gemini-code-assist <command>`. Below is a summary of the supported commands on the current page. Feature | Command | Description --- | --- | --- Code Review | `/gemini review` | Performs a code review for the current pull request in its current state. Pull Request Summary | `/gemini summary` | Provides a summary of the current pull request in its current state. Comment | @gemini-code-assist | Responds in comments when explicitly tagged, both in pull request comments and review comments. Help | `/gemini help` | Displays a list of available commands. <b>Customization</b> To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a `.gemini/` folder in the base of the repository. Detailed instructions can be found [here](https://developers.google.com/gemini-code-assist/docs/customize-gemini-behavior-github). <b>Limitations & Feedback</b> Gemini Code Assist may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with :thumbsup: and :thumbsdown: on @gemini-code-assist comments. If you're interested in giving your feedback about your experience with Gemini Code Assist for Github and other Google products, sign up [here](https://google.qualtrics.com/jfe/form/SV_2cyuGuTWsEw84yG). <b>You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the [Gemini Code Assist IDE Extension](https://cloud.google.com/products/gemini/code-assist).</b> </details> [^1]: Review the [Privacy Notices](https://policies.google.com/privacy), [Generative AI Prohibited Use Policy](https://policies.google.com/terms/generative-ai/use-policy), [Terms of Service](https://policies.google.com/terms), and learn how to configure Gemini Code Assist in GitHub [here](https://developers.google.com/gemini-code-assist/docs/customize-gemini-behavior-github). Gemini can make mistakes, so double check it and [use code with caution](https://support.google.com/legal/answer/13505487). -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
