Fix PostgreSQL driver conflicts and environment variable loading

- Force PostgreSQL driver in Spring Boot (exclude MySQL driver)
- Set Hibernate ddl-auto to 'none' in Docker profile (Flyway manages schema)
- Quote 'user' table name in User entity (PostgreSQL reserved keyword)
- Add globally_quoted_identifiers to Hibernate config
- Update Makefile to explicitly load .env from parent directory
- Add comments to docker-compose.yml about .env file location
- Add .env.bak and temp-elo-data/ to .gitignore

Author: Alexander-Rees

.gitignore

@@ -71,3 +71,7 @@ model-files copy/
 # Maven (keep wrapper, ignore cache)
 .mvn/wrapper/maven-wrapper.jar
 backend/.mvn/
+
+# Temporary files
+.env.bak
+temp-elo-data/

Makefile

@@ -1,4 +1,4 @@
-COMPOSE=cd infra && docker compose
+COMPOSE=cd infra && docker compose --env-file ../.env
 
 .PHONY: up down logs ps build
 

backend/src/main/java/com/example/demo/model/User.java

@@ -7,7 +7,7 @@
 import jakarta.persistence.Table;
 
 @Entity
-@Table(name = "user")
+@Table(name = "\"user\"")
 public class User {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)

backend/src/main/resources/application-docker.properties

@@ -13,7 +13,7 @@ flask.api.url=${FLASK_API_URL:http://flask-ml:5001}
 internal.api.token=${INTERNAL_API_TOKEN}
 
 # Disable ddl-auto in production (use Flyway)
-spring.jpa.hibernate.ddl-auto=validate
+spring.jpa.hibernate.ddl-auto=none
 spring.jpa.show-sql=false
 
 # Reduce logging in production

backend/src/main/resources/application.properties

@@ -6,6 +6,8 @@ spring.datasource.url=${SPRING_DATASOURCE_URL:jdbc:postgresql://localhost:5432/f
 spring.datasource.username=${SPRING_DATASOURCE_USERNAME:postgres}
 spring.datasource.password=${SPRING_DATASOURCE_PASSWORD:password}
 spring.datasource.driver-class-name=org.postgresql.Driver
+# Force PostgreSQL driver - prevent auto-detection of other drivers
+spring.datasource.hikari.driver-class-name=org.postgresql.Driver
 
 # HikariCP Configuration (Connection Pool)
 spring.datasource.hikari.maximum-pool-size=5
@@ -19,6 +21,8 @@ spring.datasource.hikari.initialization-fail-timeout=60000
 spring.jpa.hibernate.ddl-auto=update
 spring.jpa.show-sql=true
 spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQLDialect
+spring.jpa.properties.hibernate.globally_quoted_identifiers=true
+spring.jpa.properties.hibernate.globally_quoted_identifiers_skip_column_definitions=false
 
 # PostgreSQL Configuration
 spring.datasource.hikari.data-source-properties.preparedStatementCacheQueries=250

infra/docker-compose.yml

@@ -1,4 +1,7 @@
 # Docker Compose file - version field is obsolete in newer versions
+# Note: .env file should be in parent directory (../.env)
+# Use: docker compose --env-file ../.env up
+# Or run from root: make up
 
 networks:
   app-net: