be24b68923
Add validation to reject ID values <= 0 in GetTrackHasGenreByIdHandler
before calling the service layer. This prevents the protobuf default value
of 0 from being processed, which would incorrectly pass the null check in
the service but represents an invalid ID.
Changes:
- Extract ID from GetTrackHasGenreByIdRequest and validate id <= 0
- Throw IllegalArgumentException with message "ID must be greater than 0"
if validation fails
- Add specific catch block for IllegalArgumentException that returns
HTTP 400 status code with "Validation error: " prefix
- Mirrors validation pattern from CreateTrackHasGenreHandler
This aligns with validation patterns used in similar handlers throughout
the codebase (GetTrackHasArtistByIdHandler, GetTrackHasComposerByIdHandler)
and ensures consistent error handling for invalid ID inputs.
Modified:
- src/main/java/com/mediamanager/service/delegate/handler/trackhasgenre/GetTrackHasGenreByIdHandler.java
🤖 Generated with [Claude Code](https://claude.com/claude-code)
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| README.md | ||
| pom.xml | ||
README.md
MediaManager Core
A Java-based media management system that uses IPC (Inter-Process Communication) with named pipes and PostgreSQL for data persistence.
Features
- IPC communication using named pipes
- PostgreSQL database integration
- JPA/Hibernate for ORM
- Log4j 2 for logging
- HikariCP connection pooling
- Sample Media entity model
Prerequisites
- Java 17 or higher
- Maven 3.6+
- PostgreSQL 12 or higher
Project Structure
MediaManager-Core/
├── src/
│ └── main/
│ ├── java/
│ │ └── com/
│ │ └── mediamanager/
│ │ ├── config/ # Configuration classes
│ │ ├── model/ # JPA entities
│ │ ├── repository/ # Data access layer
│ │ ├── service/ # Business logic
│ │ ├── ipc/ # IPC implementation
│ │ ├── util/ # Utility classes
│ │ └── MediaManagerApplication.java
│ └── resources/
│ ├── config.properties # App configuration
│ ├── log4j2.xml # Logging configuration
│ └── META-INF/
│ └── persistence.xml # JPA configuration
└── pom.xml
Setup
1. Database Setup
Create a PostgreSQL database and user:
CREATE DATABASE mediamanager;
CREATE USER mediamanager WITH PASSWORD 'changeme';
GRANT ALL PRIVILEGES ON DATABASE mediamanager TO mediamanager;
2. Configuration
Edit src/main/resources/config.properties and update the database credentials:
db.url=jdbc:postgresql://localhost:5432/mediamanager
db.username=mediamanager
db.password=your_password_here
3. Build the Project
mvn clean install
4. Run the Application
mvn exec:java -Dexec.mainClass="com.mediamanager.MediaManagerApplication"
Or build and run the JAR:
mvn clean package
java -jar target/MediaManager-Core-0.0.1-SNAPSHOT.jar
IPC Configuration
The application creates named pipes for inter-process communication. Default configuration:
- Pipe path:
/tmp/mediamanager - Pipe name:
mediamanager-pipe - Buffer size: 8192 bytes
You can modify these settings in config.properties.
Logging
Logs are written to:
- Console (STDOUT)
logs/mediamanager.log(rotating daily, max 10MB per file)
Log configuration can be modified in src/main/resources/log4j2.xml.
Development
Adding New Entities
- Create entity class in
com.mediamanager.model - Add the entity class to
persistence.xml - Create corresponding repository and service classes
Running Tests
mvn test
Dependencies
- PostgreSQL Driver: 42.7.5
- Hibernate ORM: 7.1.7.Final
- HikariCP: 5.1.0
- Log4j 2: 2.23.1
- Jackson: 2.16.1
- JUnit 5: 5.10.2
License
TBD
TODO
- Implement IPC server with named pipes
- Implement database connection manager
- Create repository layer
- Create service layer
- Add comprehensive tests
- Add API documentation