add connection one-to-many

src/main/java/com/example/demo/speaker/controller/CompanyController.java

@@ -51,6 +51,10 @@ public class CompanyController {
     public Company deleteCompany(@PathVariable Long id) {
         return companyService.deleteCompany(id);
     }
-
+    @GetMapping("/list={id}")
+    public List<RequestForCooperation> getRequestsOfCompany(@PathVariable Long id)
+    {
+        return companyService.findCompany(id).getList();
+    }
 
 }

src/main/java/com/example/demo/speaker/model/Company.java

@@ -2,6 +2,8 @@ package com.example.demo.speaker.model;
 
 import jakarta.persistence.*;
 
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Objects;
 
 @Entity
@@ -14,6 +16,8 @@ public class Company {
     private String adressCompany;
     @Column(nullable = false)
     private String contactEmail;
+    @OneToMany(cascade = CascadeType.ALL, orphanRemoval = true)
+    private List<RequestForCooperation> requests = new ArrayList<>();
 
     @Id
     @GeneratedValue(strategy = GenerationType.AUTO)
@@ -64,6 +68,14 @@ public class Company {
     {
         this.contactEmail = contactEmail;
     }
+
+    public void setList(RequestForCooperation req) {
+        this.requests.add(req);
+    }
+    public List<RequestForCooperation> getList()
+    {
+        return requests;
+    }
     @Override
     public boolean equals(Object o) {
         if (this == o) return true;

src/main/java/com/example/demo/speaker/service/CompanyService.java

@@ -1,6 +1,8 @@
 package com.example.demo.speaker.service;
 
 import com.example.demo.speaker.model.Company;
+import com.example.demo.speaker.model.RequestForCooperation;
+import com.example.demo.speaker.model.TypeOfRequestEnum;
 import jakarta.persistence.EntityManager;
 import jakarta.persistence.EntityNotFoundException;
 import jakarta.persistence.PersistenceContext;
@@ -53,4 +55,14 @@ public class CompanyService {
     public void deleteAllCompanies() {
         em.createQuery("delete from Company").executeUpdate();
     }
+
+    @Transactional
+    public List<RequestForCooperation> getTypesRequests(Long id, TypeOfRequestEnum type)
+    {
+        final Company comp = findCompany(id);
+        var list = comp.getList();
+        List<RequestForCooperation> res = list.stream().
+                filter(r -> r.getType() == type).toList();
+        return res;
+    }
 }

src/main/java/com/example/demo/speaker/service/RequestForCooperationService.java

@@ -13,6 +13,8 @@ import org.springframework.util.StringUtils;
 
 import java.util.Date;
 import java.util.List;
+import java.util.stream.Stream;
+
 @Service
 public class RequestForCooperationService {
     @PersistenceContext
@@ -26,6 +28,7 @@ public class RequestForCooperationService {
         }
         final RequestForCooperation report = new RequestForCooperation(name, createDate, type, text);
         em.persist(report);
+        name.setList(report);
         return report;
     }
 

src/test/java/com/example/demo/JPATests.java

@@ -19,6 +19,7 @@ import java.text.ParseException;
 import java.text.SimpleDateFormat;
 import java.util.List;
 import java.util.Locale;
+import java.util.stream.Stream;
 
 @SpringBootTest
 public class JPATests {
@@ -57,7 +58,43 @@ public class JPATests {
         log.info(addCompany.toString());
         Assertions.assertEquals(comp, addCompany);
     }
+    @Test
+    void checkConnectionCompanyAndRequest() throws ParseException {
+        requestService.deleteAllRequests();
+        companyService.deleteAllCompanies();
 
+        final Company comp = companyService.addCompany("Mars", "Ульяновск, Солнечная 19",
+                "Солнечная 19", "mars@mail.ru");
+        final TypeOfRequestEnum type = TypeOfRequestEnum.TRACKING;
+        RequestForCooperation report = requestService.addRequest(comp,
+                formatter.parse("05-Jun-2018"),
+                type, "Хотим сотрудничать");
+        report = requestService.addRequest(comp,
+                formatter.parse("18-Jun-2018"),
+                type, "Хотим сотрудничать");
+        var listRequest = comp.getList();
+        Assertions.assertEquals(2, listRequest.size());
+
+    }
+    @Test
+    void checkConnectionRequestAndCompany() throws ParseException {
+        requestService.deleteAllRequests();
+        companyService.deleteAllCompanies();
+
+        final Company comp = companyService.addCompany("Mars", "Ульяновск, Солнечная 19",
+                "Солнечная 19", "mars@mail.ru");
+        final TypeOfRequestEnum type = TypeOfRequestEnum.TRACKING;
+        RequestForCooperation report = requestService.addRequest(comp,
+                formatter.parse("05-Jun-2018"),
+                type, "Хотим сотрудничать");
+        report = requestService.addRequest(comp,
+                formatter.parse("18-Jun-2018"),
+                type, "Хотим сотрудничать");
+        List<Company> listCompany = requestService.findAllRequests().
+                stream().map(p -> p.getName()).toList();
+        Assertions.assertEquals(1, listCompany.size());
+
+    }
     @Test
     void testReportCreate() throws ParseException {
         requestService.deleteAllRequests();
@@ -157,4 +194,5 @@ public class JPATests {
         log.info(reports.toString());
         Assertions.assertEquals(0, reports.size());
     }
+
 }