Feature/86exp4m1h oraclequant erp api

CHANGELOG.md

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+# Changelog
+
+All notable project changes are documented in this file.
+
+## 0.0.1-SNAPSHOT - 2026-05-21
+
+- Created the initial Spring Boot Maven project.
+- Added the basic application entry point.
+- Added the initial README file.
+
+## 0.0.2-SNAPSHOT - 2026-05-21
+
+- Added the package measurement conversion REST API.
+- Implemented conversion logic for `_`, `a-z`, and multi-character `z` values.
+- Added request history persistence with `id`, `timestamp`, `source_ip_address`, `input`, and `output` fields.
+- Added history REST endpoints for `GET`, `PUT`, `PATCH`, and `DELETE` requests.
+- Added Oracle XE database configuration through the `oracle` Spring profile.
+- Added local H2 database support for development and automated tests.
+- Added Logback configuration for console logging and daily rolling file logging.
+- Configured application logs to write to `logs/oraclequantapi.log` by default.
+- Configured rolling log retention for seven days.
+- Added unit and integration tests for conversion and API behavior.
+
+## 0.0.3-SNAPSHOT - 2026-05-21
+
+- Refactored the Java source structure into `controller`, `service`, `model`, and `repository` packages.
+- Renamed the main application class to `OracleQuantApiApplication`.
+- Renamed service and repository classes to match the requested project structure.
+- Updated unit and integration tests to match the new package structure.
+
+## 0.0.4-SNAPSHOT - 2026-05-22
+
+- Updated conversion behavior so invalid characters are treated as `0` instead of returning errors.
+- Updated conversion behavior so missing measured values are treated as `0`.
+- Added support for empty or missing `input` values, returning an empty list.
+- Updated history persistence to support empty request input values.
+- Updated tests for tolerant conversion behavior.
+
+## 0.0.5-SNAPSHOT - 2026-05-22
+
+- Reviewed the current project structure and database-related files.
+- Added `ConversionHistory` entity file for conversion history data modeling.
+- Added `ConversionHistoryRepository` for conversion history database access.
+- Kept the active API history flow using `HistoryRecord`, `HistoryRepository`, and `HistoryService`.
+- Updated `CHANGELOG.md` and `version.txt` to match the current project state.
+
+## 0.0.6-SNAPSHOT - 2026-05-23
+
+- Updated logging documentation in `CHANGELOG.md` and `version.txt`.
+- Documented that the application uses Logback for console and file logging.
+- Documented that logs are written to `logs/oraclequantapi.log` by default.
+- Documented that rolling log files are retained for seven days.
+
+## 0.0.7-SNAPSHOT - 2026-05-25
+
+- Updated documentation for `application-oracle.properties` and `logback-spring.xml`.
+- Documented that `application-oracle.properties` stores Oracle XE profile database settings separately from local H2 settings.
+- Documented that the Oracle profile can be activated with `SPRING_PROFILES_ACTIVE=oracle`.
+- Documented that `logback-spring.xml` controls console logging, file logging, daily log rotation, and seven-day log retention.
+- Clarified that logs are written to `logs/oraclequantapi.log` by default.