OData/odata.net
Nov 2024 – Jun 2026
12 Months active
Languages Used
C#XMLPowerShell
Technical Skills
.NETAPI DevelopmentBackend DevelopmentBug FixingCSDLCode Cleanup
Sam Xu
PROFILE
Sam Xu
Over the past year, contributed to the OData/odata.net repository by building and refining core backend features and addressing complex protocol issues. Focused on enhancing OData URI parsing, query expressiveness, and data aggregation, while systematically improving code quality, test reliability, and cross-platform compatibility. Leveraged C#, .NET, and PowerShell to implement robust API design, JSON serialization, and security patching. Delivered targeted bug fixes for enum handling, function binding, and navigation property counts, ensuring correctness and stability. Regularly upgraded dependencies, centralized utility logic, and expanded test coverage, resulting in a more maintainable, performant, and standards-compliant backend for enterprise data services.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
24Total
Bugs
10
Commits
24
Features
10
Lines of code
2,220,163
Activity Months12
Your Network
4946 peopleSame Organization
@microsoft.com4939
GitOpsMember
Ananta GuptaMember
Abi GicicMember
Abigail HartmanMember
Abram SandersonMember
Adam EttenbergerMember
Adam KrantzMember
Alexandre GattikerMember
Ami HollanderMember
Shared Repositories
7
Work History
June 2026
1 Commits
Jun 1, 2026June 2026 highlights for OData/odata.net: delivered a critical correctness fix in the 'in' operator handling for nullable enums. The issue caused a nullable enum value of null to be treated as an invalid enum constant due to incorrect single-quote quoting by NormalizeEnumCollectionItems. The fix skips quoting for null literals, allowing the JSON reader to interpret null as a true null. This change improves query reliability for clients using nullable enum comparisons like =Status in (null, 'Active'). Implemented in commit 546c744adb563fdf59b3f581f90e573493a40bfc, co-authored by Copilot.
1 Commits
Jun 1, 2026June 2026 highlights for OData/odata.net: delivered a critical correctness fix in the 'in' operator handling for nullable enums. The issue caused a nullable enum value of null to be treated as an invalid enum constant due to incorrect single-quote quoting by NormalizeEnumCollectionItems. The fix skips quoting for null literals, allowing the JSON reader to interpret null as a true null. This change improves query reliability for clients using nullable enum comparisons like =Status in (null, 'Active'). Implemented in commit 546c744adb563fdf59b3f581f90e573493a40bfc, co-authored by Copilot.
June 2026
May 2026
4 Commits • 2 Features
May 1, 2026May 2026 monthly summary for OData/odata.net: Delivered cross-platform packaging and compatibility fixes, centralized binary Base64Url decoding, an OData.Core 8.4.4 upgrade, and an enum-URI quoting fix, driving reliability, interoperability, and feature expansion while improving test coverage and maintainability.
May 2026
4 Commits • 2 Features
May 1, 2026May 2026 monthly summary for OData/odata.net: Delivered cross-platform packaging and compatibility fixes, centralized binary Base64Url decoding, an OData.Core 8.4.4 upgrade, and an enum-URI quoting fix, driving reliability, interoperability, and feature expansion while improving test coverage and maintainability.
October 2025
2 Commits
Oct 1, 2025Performance review month 2025-10 focused on hardening OData URI parsing for OData/odata.net. Delivered robustness improvements and fixed two edge-case parsing regressions, enhancing reliability of query handling and string comparisons for downstream clients and enterprise deployments. The changes reduce production incidents related to query parsing and provide a more stable foundation for future feature development.
2 Commits
Oct 1, 2025Performance review month 2025-10 focused on hardening OData URI parsing for OData/odata.net. Delivered robustness improvements and fixed two edge-case parsing regressions, enhancing reliability of query handling and string comparisons for downstream clients and enterprise deployments. The changes reduce production incidents related to query parsing and provide a more stable foundation for future feature development.
October 2025
September 2025
2 Commits • 1 Features
Sep 1, 2025Monthly summary for 2025-09: Delivered critical improvements in test reliability and expanded OData capabilities. The Public API test data alignment fix ensures tests reflect the shipped code, reducing drift between unshipped and shipped APIs. Implemented OData Collection Property Aggregation, extending $apply to support aggregating collection properties via custom methods, with accompanying changes to resource strings, new classes, and ApplyBinder updates. The changes improve client experience by enabling more advanced data analytics capabilities and ensuring a more robust public API surface.
September 2025
2 Commits • 1 Features
Sep 1, 2025Monthly summary for 2025-09: Delivered critical improvements in test reliability and expanded OData capabilities. The Public API test data alignment fix ensures tests reflect the shipped code, reducing drift between unshipped and shipped APIs. Implemented OData Collection Property Aggregation, extending $apply to support aggregating collection properties via custom methods, with accompanying changes to resource strings, new classes, and ApplyBinder updates. The changes improve client experience by enabling more advanced data analytics capabilities and ensuring a more robust public API surface.
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025: Delivered OData root path support, enabling $root in URI expressions across OData.Core and OData.Client. This enables referencing resources within the same service and more flexible querying. Updated parsing and binding of $root tokens; fixes issue #2794. Commit b2f76f51561879576b77b356e63711607db54ab6 (Fixes #2794: Enable $root path (#3157)).
1 Commits • 1 Features
Jun 1, 2025June 2025: Delivered OData root path support, enabling $root in URI expressions across OData.Core and OData.Client. This enables referencing resources within the same service and more flexible querying. Updated parsing and binding of $root tokens; fixes issue #2794. Commit b2f76f51561879576b77b356e63711607db54ab6 (Fixes #2794: Enable $root path (#3157)).
June 2025
May 2025
1 Commits
May 1, 2025May 2025 – OData/odata.net: Focused bug fix to navigation properties count handling, improving correctness and interoperability. Implemented support for @odata.count during JSON deserialization and serialization for navigation properties that include a count but no content, and added optional writing of counts for navigation links to accurately represent linked resources when only a count is provided. This reduces edge-case issues for client apps and aligns with the OData spec, delivering business value by improving data representation and client compatibility.
May 2025
1 Commits
May 1, 2025May 2025 – OData/odata.net: Focused bug fix to navigation properties count handling, improving correctness and interoperability. Implemented support for @odata.count during JSON deserialization and serialization for navigation properties that include a count but no content, and added optional writing of counts for navigation links to accurately represent linked resources when only a count is provided. This reduces edge-case issues for client apps and aligns with the OData spec, delivering business value by improving data representation and client compatibility.
April 2025
1 Commits
Apr 1, 2025April 2025: Focused on improving correctness and reliability of function binding for complex types in OData/odata.net. Implemented a targeted fix in FunctionCallBinder to correctly handle structured return types, added regression tests, and expanded test coverage to ensure robust handling of complex function calls. Resulted in fewer runtime binding errors and stronger API fidelity for clients consuming complex types.
1 Commits
Apr 1, 2025April 2025: Focused on improving correctness and reliability of function binding for complex types in OData/odata.net. Implemented a targeted fix in FunctionCallBinder to correctly handle structured return types, added regression tests, and expanded test coverage to ensure robust handling of complex function calls. Resulted in fewer runtime binding errors and stronger API fidelity for clients consuming complex types.
April 2025
March 2025
1 Commits
Mar 1, 2025March 2025 monthly summary focused on stabilizing path resolution in the OData .NET library. Delivered a targeted bug fix for IEdmModel.GetTargetPath to correctly handle property names that contain dots or named Geography, preventing a type-cast error and ensuring such names are treated as qualified type names rather than built-in types. Added regression unit tests to cover this scenario and prevent future regressions.
March 2025
1 Commits
Mar 1, 2025March 2025 monthly summary focused on stabilizing path resolution in the OData .NET library. Delivered a targeted bug fix for IEdmModel.GetTargetPath to correctly handle property names that contain dots or named Geography, preventing a type-cast error and ensuring such names are treated as qualified type names rather than built-in types. Added regression unit tests to cover this scenario and prevent future regressions.
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025 monthly summary for OData/odata.net focused on expanding query capabilities by delivering robust support for parsing the $select/$count segment in OData URIs. This work enables accurate selection and counting on collection properties, improving the expressiveness of client queries and the reliability of results.
1 Commits • 1 Features
Feb 1, 2025February 2025 monthly summary for OData/odata.net focused on expanding query capabilities by delivering robust support for parsing the $select/$count segment in OData URIs. This work enables accurate selection and counting on collection properties, improving the expressiveness of client queries and the reliability of results.
February 2025
January 2025
1 Commits
Jan 1, 2025January 2025 monthly summary for OData/odata.net focused on stabilizing test infrastructure and build reliability. Delivered reorganization of unit tests and addressed a build warning, enabling faster development cycles and more reliable CI feedback for future features.
January 2025
1 Commits
Jan 1, 2025January 2025 monthly summary for OData/odata.net focused on stabilizing test infrastructure and build reliability. Delivered reorganization of unit tests and addressed a build warning, enabling faster development cycles and more reliable CI feedback for future features.
December 2024
4 Commits • 3 Features
Dec 1, 2024For December 2024, OData/odata.net focused on code quality, test reliability, and release readiness. Key work delivered included integrating static analysis with Microsoft.CodeAnalysis.NetAnalyzers, cleaning up obsolete backup files and .NET Core configurations, consolidating error message generation via Error.Format, expanding test coverage around DateTimeOffset parsing, and preparing the upcoming release with a version bump to 8.2.3. These efforts reduce defect risk, improve maintainability, and accelerate confident deployments.
4 Commits • 3 Features
Dec 1, 2024For December 2024, OData/odata.net focused on code quality, test reliability, and release readiness. Key work delivered included integrating static analysis with Microsoft.CodeAnalysis.NetAnalyzers, cleaning up obsolete backup files and .NET Core configurations, consolidating error message generation via Error.Format, expanding test coverage around DateTimeOffset parsing, and preparing the upcoming release with a version bump to 8.2.3. These efforts reduce defect risk, improve maintainability, and accelerate confident deployments.
December 2024
November 2024
5 Commits • 2 Features
Nov 1, 2024Month 2024-11 – OData/.NET maintenance focusing on stability, correctness, performance, and security. Delivered critical stability fixes for large CSDL model processing, improved OData URI enum handling, boosted HTTP header parsing throughput, and upgraded the project to .NET 8 to address security vulnerabilities. These efforts reduce runtime errors, enhance parsing/validation reliability, and position the repo for scalable data processing.
November 2024
5 Commits • 2 Features
Nov 1, 2024Month 2024-11 – OData/.NET maintenance focusing on stability, correctness, performance, and security. Delivered critical stability fixes for large CSDL model processing, improved OData URI enum handling, boosted HTTP header parsing throughput, and upgraded the project to .NET 8 to address security vulnerabilities. These efforts reduce runtime errors, enhance parsing/validation reliability, and position the repo for scalable data processing.
Activity
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Quality Metrics
Correctness98.0%
Maintainability92.0%
Architecture88.4%
Performance89.6%
AI Usage25.0%
Skills & Technologies
Programming Languages
C#PowerShellXML
Technical Skills
.NET .NET Development.NETAPI DesignAPI DevelopmentBackend DevelopmentBug FixingBuild SystemC#CI/CDCSDLCode AnalysisCode CleanupCode MaintenanceCode Management
Repositories Contributed To
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