opentripplanner/OpenTripPlanner
Dec 2024 – Dec 2024
1 Month active
Languages Used
Java
Technical Skills
Backend DevelopmentCode RefinementDocumentationFare CalculationJavadocRefactoring
Daniel Heppner
PROFILE
Daniel Heppner
Daniel Heppner developed two core fare calculation features for the OpenTripPlanner repository, focusing on improving accuracy and maintainability in regional transit pricing. He standardized Washington State Ferries fare calculations by removing route-name mappings and implementing a direct switch on fare type, updating tests and aligning agency IDs for consistency. Daniel also enhanced fare rounding logic by introducing currency-aware rounding and a new method for rounding to the nearest five minor units, with comprehensive unit tests and documentation. Working primarily in Java, he applied backend development, code refactoring, and documentation skills to deliver more predictable, regionally accurate fare computations with reduced maintenance risk.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
5Total
Bugs
0
Commits
5
Features
2
Lines of code
115
Activity Months1
Your Network
38 people
Work History
December 2024
5 Commits • 2 Features
Dec 1, 2024December 2024: Delivered two core fare-calculation features in OpenTripPlanner with improved accuracy and consistency, plus broadened test coverage and documentation. Key features: 1) Washington State Ferries Fare Calculation Standardization — removes route-name mappings, uses direct switch on fare type, updated tests, and aligned WSF agency ID. 2) Fare Calculation Rounding Improvements and Currency-Aware Rounding — introduces roundDownToNearestFiveMinorUnits, adds tests/docs, and makes Money rounding currency-aware from the instance. Achievements: updated tests, improved test coverage, added documentation, and ensured regional accuracy and consistency. Impact: more accurate, predictable fares for WSF, reduced maintenance risk, and better alignment with regional pricing. Technologies/skills: Java, unit testing, code refactoring, currency handling, and documentation.
5 Commits • 2 Features
Dec 1, 2024December 2024: Delivered two core fare-calculation features in OpenTripPlanner with improved accuracy and consistency, plus broadened test coverage and documentation. Key features: 1) Washington State Ferries Fare Calculation Standardization — removes route-name mappings, uses direct switch on fare type, updated tests, and aligned WSF agency ID. 2) Fare Calculation Rounding Improvements and Currency-Aware Rounding — introduces roundDownToNearestFiveMinorUnits, adds tests/docs, and makes Money rounding currency-aware from the instance. Achievements: updated tests, improved test coverage, added documentation, and ensured regional accuracy and consistency. Impact: more accurate, predictable fares for WSF, reduced maintenance risk, and better alignment with regional pricing. Technologies/skills: Java, unit testing, code refactoring, currency handling, and documentation.
December 2024
Activity
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Quality Metrics
Correctness92.0%
Maintainability92.0%
Architecture88.0%
Performance84.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
Java
Technical Skills
Backend DevelopmentCode RefinementDocumentationFare CalculationJavadocRefactoringUnit Testing
Repositories Contributed To
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