add Quarkus configuration and implement Student entity with repository and resource

pom.xml

@@ -21,8 +21,8 @@
     <dependencyManagement>
         <dependencies>
             <dependency>
-                <groupId>${quarkus.platform.group-id}</groupId>
-                <artifactId>${quarkus.platform.artifact-id}</artifactId>
+                <groupId>io.quarkus.platform</groupId>
+                <artifactId>quarkus-bom</artifactId>
                 <version>${quarkus.platform.version}</version>
                 <type>pom</type>
                 <scope>import</scope>
@@ -30,6 +30,19 @@
         </dependencies>
     </dependencyManagement>
 
+    <repositories>
+        <repository>
+            <id>central</id>
+            <name>Maven Central</name>
+            <url>https://repo.maven.apache.org/maven2</url>
+        </repository>
+        <repository>
+            <id>quarkus</id>
+            <name>Quarkus</name>
+            <url>https://maven.quarkus.io</url>
+        </repository>
+    </repositories>
+
     <dependencies>
         <dependency>
             <groupId>io.quarkus</groupId>
@@ -39,6 +52,10 @@
             <groupId>io.quarkus</groupId>
             <artifactId>quarkus-arc</artifactId>
         </dependency>
+        <dependency>
+            <groupId>io.quarkus</groupId>
+            <artifactId>quarkus-jdbc-postgresql</artifactId>
+        </dependency>
         <dependency>
             <groupId>io.quarkus</groupId>
             <artifactId>quarkus-junit5</artifactId>
@@ -55,12 +72,16 @@
             <version>${lombok.version}</version>
             <scope>provided</scope>
         </dependency>
+        <dependency>
+            <groupId>io.quarkus</groupId>
+            <artifactId>quarkus-hibernate-orm</artifactId>
+        </dependency>
     </dependencies>
 
     <build>
         <plugins>
             <plugin>
-                <groupId>${quarkus.platform.group-id}</groupId>
+                <groupId>io.quarkus.platform</groupId>
                 <artifactId>quarkus-maven-plugin</artifactId>
                 <version>${quarkus.platform.version}</version>
                 <extensions>true</extensions>
@@ -135,4 +156,4 @@
             </properties>
         </profile>
     </profiles>
-</project>
+</project>

src/main/java/org/acme/StudentEntity.java

@@ -0,0 +1,22 @@
+package org.acme;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import lombok.*;
+
+import java.util.UUID;
+
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+@NoArgsConstructor
+@Getter
+@Setter
+@ToString
+@EqualsAndHashCode
+@Builder
+@Entity
+public class StudentEntity {
+    @Id
+    private UUID id;
+    private String firstName;
+    private String lastName;
+}

src/main/java/org/acme/StudentRepository.java

@@ -0,0 +1,41 @@
+package org.acme;
+
+import jakarta.enterprise.context.ApplicationScoped;
+import jakarta.inject.Inject;
+import jakarta.persistence.EntityManager;
+import jakarta.transaction.Transactional;
+
+import java.util.Collection;
+import java.util.UUID;
+
+@ApplicationScoped
+public class StudentRepository {
+    @Inject
+    EntityManager entityManager;
+
+    @Transactional
+    public UUID create (final StudentEntity student){
+        entityManager.persist(student);
+        return student.getId();
+    }
+
+    @Transactional
+    public void update( final StudentEntity student){
+        entityManager.merge(student);
+    }
+
+    public Collection<StudentEntity> findAll(){
+        return entityManager.createQuery("from StudentEntity s", StudentEntity.class).getResultList();
+    }
+
+    public StudentEntity findById(final UUID id){
+        return entityManager.find(StudentEntity.class, id);
+    }
+
+    @Transactional
+    public void delete (final StudentEntity student){
+        entityManager.remove(student);
+    }
+
+
+}

src/main/java/org/acme/StudentResource.java

@@ -1,46 +1,68 @@
 package org.acme;
 
-import jakarta.ws.rs.GET;
-import jakarta.ws.rs.POST;
-import jakarta.ws.rs.Path;
+import jakarta.inject.Inject;
+import jakarta.ws.rs.*;
+import jakarta.ws.rs.core.MediaType;
 import jakarta.ws.rs.core.Response;
+import lombok.extern.slf4j.Slf4j;
 
 import java.net.URI;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.UUID;
+import java.util.Optional;
 
-@Path("api/v1/students")
+@Path("api/v1/students/")
+@Produces(MediaType.APPLICATION_JSON)
+@Slf4j
 public class StudentResource {
-
-    private final Map<String, Student> students = new HashMap<>(Map.of(
-            "0854bc12-842a-47c1-b3fe-10d08949fcc8", Student.builder().id("0854bc12-842a-47c1-b3fe-10d08949fcc8").firstName("John").lastName("Doe").build()));
+    @Inject
+    StudentService studentService;
 
     @GET
     public Response find() {
-        return Response.ok(students.values()).build();
+        log.info(studentService.toString());
+        return Response.ok(studentService.findAll()).build();
     }
 
     @GET
-    @Path("{id}")
-    public Response findById(String id) {
-        final Student student = students.get(id);
-        if (student != null) {
-            return Response.ok(student).build();
-        } else {
+    @Path("{uuid}")
+    public Response findById(@PathParam("uuid") final String id){
+        final Optional<Student> student = studentService.findById(id);
+
+        if (student.isEmpty()) {
             return Response.status(Response.Status.NOT_FOUND).build();
         }
+
+        return Response.ok(student.get()).build();
     }
 
     @POST
-    public Response create(final Student student) {
-        try {
-            student.setId(UUID.randomUUID().toString());
-            students.put(student.getId(), student);
-            return Response.created(new URI("/api/v1/students/" + student.getId())).build();
+    public Response create(final Student student){
+        if (student == null) {
+            return Response.status(Response.Status.BAD_REQUEST).entity("Student cannot be null").build();
         }
-        catch (Exception e) {
-            return Response.status(Response.Status.INTERNAL_SERVER_ERROR).build();
+        try{
+            final String id = studentService.create(student);
+            return Response.created(new URI("/api/v1/students/" + id)).build();
+        } catch (final Exception e) {
+            log.error("Error creating student", e);
+            return Response.serverError().entity(e.getMessage()).build();
         }
     }
+
+    @PUT
+    @Path("{uuid}")
+    public Response update(@PathParam("uuid") final String id, final Student student) {
+        if (student == null) {
+            return Response.status(Response.Status.BAD_REQUEST).entity("Student cannot be null").build();
+        }
+        student.setId(id);
+        studentService.update(student);
+        return Response.ok().build();
+    }
+
+    @DELETE
+    @Path("{uuid}")
+    public Response delete(@PathParam("uuid") final String id){
+        studentService.delete(id);
+        return Response.noContent().build();
+    }
 }

src/main/resources/application.properties

@@ -0,0 +1,15 @@
+# Quarkus datasource configuration for PostgreSQL
+quarkus.datasource.db-kind=postgresql
+quarkus.datasource.username=schul-user-jonas
+quarkus.datasource.password=Qsczjm123
+quarkus.datasource.jdbc.url=jdbc:postgresql://ionas999.at:9234/schul-user-jonas
+quarkus.hibernate-orm.schema-management.strategy=update
+quarkus.datasource.jdbc.max-size=8
+quarkus.datasource.jdbc.min-size=2
+# Optional: show SQL statements in logs
+quarkus.hibernate-orm.log.sql=true
+# Optional: configure default schema if needed
+# quarkus.datasource.schema=public
+
+# Example custom property used in StudentService
+service2.apiKey=your-api-key-here