PMT-4: Create Allocation Model and repository

Co-authored-by: Rajbir Singh <rajbir.singh@hmmh.de>
Signed-off-by: Dominik Säume <Dominik.Saeume@hmmh.de>

src/main/java/de/hmmh/pmt/ApiController.java

@@ -1,6 +1,8 @@
 package de.hmmh.pmt;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
+import de.hmmh.pmt.db.AllocationRepository;
+import de.hmmh.pmt.employee.ApiClientFactory;
 import de.hmmh.pmt.db.Project;
 import de.hmmh.pmt.db.ProjectRepository;
 import de.hmmh.pmt.dtos.CreateProjectDTO;
@@ -30,6 +32,8 @@ public class ApiController implements DefaultApi {
     private ApiClientFactory apiClientFactory;
     @Autowired
     private ProjectRepository projectRepository;
+    @Autowired
+    AllocationRepository allocationRepository;
 
     @Override
     public Optional<ObjectMapper> getObjectMapper() {

src/main/java/de/hmmh/pmt/db/Allocation.java

@@ -0,0 +1,29 @@
+package de.hmmh.pmt.db;
+
+import jakarta.persistence.*;
+import jakarta.validation.constraints.NotNull;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@NoArgsConstructor
+@AllArgsConstructor
+@Getter
+@Setter
+@Entity
+@IdClass(AllocationId.class)
+@Table(name = "allocation")
+public class Allocation {
+    @Id
+    private Long projectId;
+    @ManyToOne
+    @JoinColumn(name = "projectId", insertable = false, updatable = false)
+    private Project project;
+
+    @Id
+    private Long employeeId;
+    
+    @NotNull
+    private Long role; // This is a QualificationId
+}

src/main/java/de/hmmh/pmt/db/AllocationId.java

@@ -0,0 +1,17 @@
+package de.hmmh.pmt.db;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+import java.io.Serializable;
+
+@Getter
+@Setter
+@NoArgsConstructor
+@AllArgsConstructor
+public class AllocationId implements Serializable {
+    private Long projectId;
+    private Long employeeId;
+}

src/main/java/de/hmmh/pmt/db/AllocationRepository.java

@@ -0,0 +1,7 @@
+package de.hmmh.pmt.db;
+
+import org.springframework.data.repository.CrudRepository;
+
+public interface AllocationRepository extends CrudRepository<Allocation, AllocationId> {
+    
+}