JpaRepository findById method returning Optional.empty when id is matching to the correct database row? - spring-boot

Question

For some reason my PluginRepository interface doesn't want to return the object saved in my database in this test here.
#RunWith(SpringRunner.class)
#SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
public class PluginServiceIntegrationTest {
#Autowired
private PluginRepository pluginRepository;
#Autowired
private PluginService pluginService;
#Autowired
private PluginController pluginController;
#LocalServerPort
private int port;
private String resourceUrl;
#Before
public void setUp() {
resourceUrl = "http://localhost:" + port + "/plugin/";
}
#Test
public void notNullTest() {
assertNotNull(pluginRepository);
assertNotNull(pluginService);
assertNotNull(pluginController);
}
#Test
public void postPluginTest() {
RestTemplate restTemplate = new RestTemplate();
PluginDTO requestDto = new PluginDTO();
HttpEntity<PluginDTO> request = new HttpEntity<>(requestDto);
ResponseEntity<PluginDTO> response = restTemplate.exchange(resourceUrl + "create", HttpMethod.POST, request, PluginDTO.class);
assertEquals(response.getStatusCode(), HttpStatus.OK);
PluginDTO pluginDTO = response.getBody();
assertNotNull(pluginDTO);
}
#Test
public void getPluginTest() throws Exception {
PluginDTO createdDto = new PluginDTO(UUID.fromString("20a246e8-7b74-4081-bb62-6911b8ef43ef"),"Foo", "0.1", "TestAuthor");
Plugin created = new Plugin(createdDto.getUuid(), createdDto.getName(), createdDto.getVersion(), createdDto.getAuthor());
pluginRepository.saveAndFlush(created);
pluginRepository.findAll().forEach(plugin -> System.out.print(plugin.toString()));
try {
Plugin plugin = pluginRepository.findById(createdDto.getUuid());
} catch (Exception ex) {
ex.printStackTrace();
}
System.out.println(pluginService.fetchPlugin(createdDto.getUuid()).toString());
assertEquals(pluginService.fetchPlugin(createdDto.getUuid()), created);
RestTemplate restTemplate = new RestTemplate();
ResponseEntity<PluginDTO> response = restTemplate.getForEntity(resourceUrl + createdDto.getUuid(), PluginDTO.class);
assertEquals(response.getStatusCode(), HttpStatus.OK);
}
#After
public void tearDown() {
pluginRepository.deleteAllInBatch();
}
}
System.out.println(pluginRepository.findById(createdDto.getUuid()).get().toString()); // this line
assertEquals(pluginService.fetchPlugin(createdDto.getUuid()), created);
RestTemplate restTemplate = new RestTemplate();
ResponseEntity<PluginDTO> response = restTemplate.getForEntity(resourceUrl + createdDto.getUuid(), PluginDTO.class);
assertEquals(response.getStatusCode(), HttpStatus.OK);
}
Even though the fixed values are set by the createdDto object it doesn't return it and I can see the values are in the database as well. This is what it returns...
20a246e8-7b74-4081-bb62-6911b8ef43ef:Foo:0.1:TestAuthor
java.util.NoSuchElementException: No value present
at java.util.Optional.get(Optional.java:135)
at net.ihq.plugin.controller.PluginServiceIntegrationTest.getPluginTest(PluginServiceIntegrationTest.java:79)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)
at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
I am very stumped as I don't understand why it can save the object but can't get it back with the same fixed values I set it with, but it is actually there from me print the list of objects in the database on the line before the error occurs.
Repository
#Repository
public interface PluginRepository extends JpaRepository<Plugin, UUID> {
#Query(value = "SELECT * FROM plugins WHERE name=?", nativeQuery = true)
Plugin findByName(String name);
}
Entity
#Data
#Entity
#Table(name = "plugins")
#NoArgsConstructor
public class Plugin {
#Id
#Convert(converter = UUIDConverter.class)
#Column(unique = true, updatable = false, length = 36)
private UUID uuid;
private String name;
private String version;
private String author;
public Plugin(UUID uuid, String name, String version, String author) {
this.uuid = uuid;
this.name = name;
this.version = version;
if (author == null) author = "JoeTAMatthews";
this.author = author;
}
public Plugin(String name, String version, String author) {
this(UUID.randomUUID(), name, version, author);
}
public void update(PluginDTO updated) {
this.name = updated.getName();
this.version = updated.getVersion();
this.author = updated.getAuthor();
}
#Override
public String toString() {
return uuid.toString() + ":" + name + ":" + version + ":" + author;
}
}

Answer 1

Sorry for the inconvenience but the reason it doesn't work is because the UUID type is not supported in the database, so all I had to do was get the string type of the uuid to actually get a result because of my UUIDConverter, thanks for all your help.