#3 - Update README.md for spring data jpa poc

ObrienlabsDev · Jul 13, 2024 · 66f48c5 · 66f48c5
1 parent 00a603a
commit 66f48c5
Showing 1 changed file with 120 additions and 14 deletions.
diff --git a/README.md b/README.md
@@ -156,31 +156,137 @@ public class SwaggerConfig {
 ```
 ### Spring Data JPA
 - see https://github.com/ObrienlabsDev/biometric-backend/issues/3
+- https://github.com/ObrienlabsDev/biometric-backend/commit/80b18e2077b26b30e26b1e6a8ec81dbee68ca668
+- 
 pom.xml
 ```
-		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-data-jpa</artifactId>
-		</dependency>
-		<dependency>
-			<groupId>com.h2database</groupId>
-			<artifactId>h2</artifactId>
-			<scope>runtime</scope>
-		</dependency>
+database
+ docker run --name mysql-dev0 -v mysql-data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=... -d -p 3506:3306 arm64v8/mysql:8.0.38
+
+CONTAINER ID   IMAGE                  COMMAND                  CREATED      STATUS         PORTS                               NAMES
+f4b8fc9ce4d0   arm64v8/mysql:8.0.38   "docker-entrypoint.s…"   4 days ago   Up 6 minutes   33060/tcp, 0.0.0.0:3506->3306/tcp   mysql-dev0
+
+	<dependency>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-data-jpa</artifactId>
+	</dependency>
+        <dependency>
+        	<groupId>mysql</groupId>
+        	<artifactId>mysql-connector-java</artifactId>
+        	<!-- version>5.1.42</version--><!-- for 5.7.44 - use 8.0.33 for 8.0.38 -->
+        	<scope>runtime</scope>
+    </dependency>
 ```
 
 Repositories
 ```
-package dev.obrienlabs.biometric.repository;
-import org.springframework.data.repository.CrudRepository;
-
-public interface RecordRepository extends CrudRepository<Record, Long> {
-	Record findById(long id);
+@Repository
+public class RecordRepositoryImpl {// implements RecordRepository {
+	  @PersistenceContext
+	  private EntityManager entityManager;
+	  //Record findById(long id);
+	  //@Override
+	  @Transactional
+	  public void persist(Record record) {
+		  entityManager.persist(record);
+	  }
 }
 
 ```
 JPA Entities
 
+```
+@MappedSuperclass
+public class DataObject {
+    @Version
+    private Long version;
+}
+
+@MappedSuperclass
+public class IdentifiableDataObject extends DataObject {
+    @Id
+    @Column(name="IDENT_ID")
+    @GeneratedValue(strategy = GenerationType.IDENTITY)//.AUTO)   
+    @XmlElement
+    private Long id;
+}
+
+@Entity
+@Table(name="gps_record")
+@Access(value = AccessType.FIELD)
+@XmlType
+@XmlRootElement
+@XmlAccessorType(XmlAccessType.FIELD)
+public class Record extends IdentifiableDataObject {
+    @XmlElement
+    @Column(name="userId", nullable=false)
+    private Long userId;
+    // 20240713: https://stackoverflow.com/questions/25283198/spring-boot-jpa-column-name-annotation-ignored
+    //@Column(name="ts_start")
+    @XmlElement 
+    private Long tsStart;
+}
+```
+
+For the problem where the column names were auto converting from tsStart to ts_start - gemini was no help - stackoverflow as usually was.
+https://stackoverflow.com/questions/25283198/spring-boot-jpa-column-name-annotation-ignored
+
+```
+# https://docs.spring.io/spring-boot/docs/1.1.0.M1/reference/html/howto-database-initialization.html
+#spring.jpa.hibernate.ddl-auto=create-drop
+spring.jpa.hibernate.ddl-auto=none
+#spring.jpa.properties.hibernate.globally_quoted_identifiers=true
+spring.datasource.url=jdbc:mysql://127.0.0.1:3506/biometric
+spring.datasource.username=root
+spring.datasource.password=...
+# deprecated
+#spring.datasource.driverClassName=com.mysql.jdbc.Driver
+spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver
+
+# override auto conversion of tsStart to ts_start
+# see https://stackoverflow.com/questions/25283198/spring-boot-jpa-column-name-annotation-ignored
+spring.jpa.hibernate.naming.implicit-strategy=org.hibernate.boot.model.naming.ImplicitNamingStrategyLegacyJpaImpl
+spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
+```
+The use of EntityManager.persist(entity) over CrudRepository.save(entity, Long) - required @EnableJpaRepositories("com.delivery.repository") on the application class to pick up a non interface repository
+```
+@SpringBootApplication
+@EnableJpaRepositories("dev.obrienlabs.biometric.repository")
+public class BiometricNbiApplication {
+	public static void main(String[] args) {
+		SpringApplication.run(BiometricNbiApplication.class, args);
+	}
+
+for
+@Repository
+public class RecordRepositoryImpl {// implements RecordRepository {
+	  @PersistenceContext
+	  private EntityManager entityManager;
+	  //Record findById(long id);
+	  //@Override
+	  @Transactional
+	  public void persist(Record record) {
+		  entityManager.persist(record);
+	  }
+}
+```
+
+## Working
+
+```
+http://127.0.0.1:8080/nbi/swagger-ui.html#/api-controller/getGpsUsingGET
+
+7-13 18:32:15.043 DEBUG 95337 --- [nio-8080-exec-5] o.s.web.servlet.DispatcherServlet        : GET "/nbi/api/getGps?ac=0&action=u2&al=0&arx=0&ary=0&arz=0&be=0&grx=0&gry=0&grz=0&gsx=0&gsy=0&gsz=0&hr1=0&hr2=0&hrd1=0&hrd2=0&hu=0&lax=0&lay=0&laz=0&lg=0&li=0&lt=0&mfx=0&mfy=0&mfz=0&p=0&pr=0&px=0&rvx=0&rvy=0&rvz=0&s=0&te=0&ts=0&u=202407130&up=0", parameters={masked}
+2024-07-13 18:32:15.044 DEBUG 95337 --- [nio-8080-exec-5] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to dev.obrienlabs.biometric.nbi.controller.ApiController#getGps(String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, String, HttpServletRequest)
+2024-07-13 18:32:15.079 DEBUG 95337 --- [nio-8080-exec-5] m.m.a.RequestResponseBodyMethodProcessor : Using 'text/plain', given [*/*] and supported [text/plain, */*, text/plain, */*, application/json, application/*+json, application/json, application/*+json]
+2024-07-13 18:32:15.079 DEBUG 95337 --- [nio-8080-exec-5] m.m.a.RequestResponseBodyMethodProcessor : Writing ["Record(id=15458116,uid=202407130,ssq=0,rsq=0,hr1=0,hr2=0,lat=0.0,lon=0.0,bea=0,alt=0.0,tst0,tsp=1720 (truncated)..."]
+2024-07-13 18:32:15.081 DEBUG 95337 --- [nio-8080-exec-5] o.s.web.servlet.DispatcherServlet        : Completed 200 OK
+
+select * from biometric.gps_record where userId="202407130"
+
+
+```
+
 #### References
 - https://spring.io/guides/gs/accessing-data-jpa