My project is in the form:
Class Persistant :
#Entity
public class Produit implements Serializable {
private static final long serialVersionUID = -3352484919001942398L;
#Id
#GeneratedValue
private Long id;
private String module;
private String produit;
//getter&&setter
Class Dao
public List<Entry<Integer, List<Produit>>> parProduit(String cat) {
.......
HashMap<Integer, List<Produit>> legaux = new HashMap<Integer, List<Produit>>();
........
List<Map.Entry<Integer, List<Produit>>> entries = new ArrayList<Entry<Integer, List<Produit>>>(legaux.entrySet());
return entries;
}
when i execute this code i get this error :
java.io.NotSerializableException: java.util.HashMap$Node
java.util.HashMap.EntrySet<K, V>
is not serializable.
legaux.entrySet()
probably returns set of type java.util.HashMap.EntrySet, you may want to check that.
Related
#AerospikeEntity(nameSpace = Constants.NAMESPACE, setName = Constants.ABC_SET)
public class ABCModel implements Serializable {
private static final long serialVersionUID = 1L;
#AerospikeKey
private String cycle;
private long debitAmount;
private long creditAmount;
private Map<String, AtomicDouble> map;
}
suppose atomically i want to update some key inside this given map ,how can i achieve this in Aerospike java client ?
Please see code examples here: https://github.com/aerospike/aerospike-client-java/blob/master/examples/src/com/aerospike/examples/OperateMap.java
I would like to design a booking system using optaplanner, bellow my business model:
Customers (id, name) //Customer table
Services(id, name, description, duration) //services that a customer can book, duration can be 15min, 30min, ..., N x 15min
Employees(id, name) //Employee tables
Appointment(id, customerId, employeeId, serviceId, startTime, endTime)
To book an appointment, the customer will select:
The day of the appointment (mandatory)
A list of services (mandatory)
A list of employees (optional)
I would like to know I can design the model to return the list of availability for a given day, given list of services.
Bellow a basic pseudo-code model :
#Entity
public class Service extends PanacheEntityBase {
#Id
#GeneratedValue
#NotNull
private Long id;
#NotBlank
private String name;
private int durationInGrains;
}
public class TimeGrain {
public static final int GRAIN_LENGTH_IN_MINUTES = 15;
private int grainIndex; // unique
private int startingMinuteOfDay;
}
#Entity
public class Employee extends PanacheEntityBase {
#PlanningId
#Id
#GeneratedValue
#NotNull
private Long id;
#NotBlank
private String name;
}
#Entity
public class Appointment extends PanacheEntityBase {
#Id
#GeneratedValue
#NotNull
private Long id;
private Employee employee;
private Service service;
private LocalDateTime startTime;
private LocalDateTime endTime;
}
#PlanningEntity
public class Availability {
#PlanningVariable(valueRangeProviderRefs = { "timeGrainRange" })
private TimeGrain startingTimeGrain;
#PlanningVariable(valueRangeProviderRefs = "providerRange")
private Provider provider;
private Service service;
}
#PlanningSolution
public class AppointmentAvailability {
#ValueRangeProvider(id = "timeGrainRange")
#ProblemFactCollectionProperty
private List<TimeGrain> timeGrainList;
#ProblemFactCollectionProperty
#ValueRangeProvider(id = "providerRange")
private List<Provider> providerList;
#ProblemFactCollectionProperty
#ValueRangeProvider(id = "appointmentsRange")
private List<Appointment> appointmentList;
#PlanningEntityCollectionProperty
private List<Availability> availabilityList;
#PlanningScore
private HardMediumSoftScore score;
}
As I am new to optaplanner, could you please advise if this is the way to go?
UPDATE 1: I have simplified the problem to the minimum for design purposes.
Take a look at the meeting scheduling example in optaplanner-examples, to get inspired on how to model it. Also see the Time Grain pattern in the docs in the section Design Patterns. The school timetabling quickstart follows the Timeslot pattern instead.
i have a question,one order have many crafts, one of the crafts need two or many people to finish,so in the planning entity i usee a list object for planning variables,but when i start the application,it have a error,please give me some idea,thanks!
#PlanningSolution
public class ScheduleSolution extends AbstractPersistable {
#ProblemFactCollectionProperty
private List<Order> orderList;
#ProblemFactCollectionProperty
private List<ProductBom> productBomList;
#PlanningEntityCollectionProperty
private List<JobAssignment> jobAssignmentList;
#ProblemFactCollectionProperty
#ValueRangeProvider(id = "resourceRange")
List<Resource> resourceList;
#PlanningScore
private HardSoftScore score;
}
#PlanningEntity
public class JobAssignment extends AbstractPersistable {
private ProductBom productBom;
#PlanningVariable(valueRangeProviderRefs = { "resourceRange" })
private List<Resource> resourceList;
}
Caused by: java.lang.IllegalArgumentException: The entityClass (class com.demo.domain.reassign.JobAssignment) has a PlanningVariable annotated property (resourceList) that refers to a ValueRangeProvider annotated member (field java.util.List com.demo.domain.reassign.ScheduleSolution.resourceList) that returns a Collection with elements of type (class com.demo.domain.reassign.Resource) which cannot be assigned to the PlanningVariable's type (interface java.util.List). at org.optaplanner.core.impl.domain.valuerange.descriptor.AbstractFromPropertyValueRangeDescriptor.processValueRangeProviderAnnotation(AbstractFromPropertyValueRangeDescriptor.java:136)
A #PlanningVariable cannot be a List, not until we support #PlanningVariableCollection some day. Possible fix:
#PlanningEntity
public class JobAssignment extends AbstractPersistable {
private ProductBom productBom;
#PlanningVariable(valueRangeProviderRefs = { "resourceRange" })
private Resource resource;
}
I have a simple web controller to return an User entity.
This entity has a property nonEditableProperty that cannot be updated.
It's works fine on the web controller, the nonEditableProperty value is listed but on the UserControllerTest it doesn't work and the returned value is always null.
The annotation #JsonProperty(access = JsonProperty.Access.READ_ONLY) seems to be ignored during the test serialization.
Does anyone have any clue for this issue?
Should I load some Jackson configuration for the tests?
#Getter
#Entity
class User implements Serializable {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;
private String name;
#JsonProperty(access = JsonProperty.Access.READ_ONLY)
private String nonEditableProperty;
User() {
}
public User(String name, String nonEditableProperty) {
this.name = name;
this.nonEditableProperty = nonEditableProperty;
}
}
#RestController
#AllArgsConstructor
#RequestMapping("users")
public class UserController {
private final UserRepository userRepository;
#GetMapping
public Collection<User> getAllUsers() {
return (Collection<User>) userRepository.findAll();
}
#GetMapping(path = "/{id}")
public User getUser(#PathVariable Integer id) {
return userRepository.findOne(id);
}
}
#RunWith(SpringRunner.class)
#SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
public class UserControllerTest {
#Autowired
TestRestTemplate testRestTemplate;
#Test
public void getUserShouldReturnData() {
ResponseEntity<User> response = testRestTemplate.getForEntity("/users/{id}", User.class, 1);
assertThat(response.getStatusCode()).isEqualTo(HttpStatus.OK);
assertThat(response.getBody().getName()).isEqualTo("Muhammed Suiçmez");
assertThat(response.getBody().getNonEditableProperty()).isEqualTo("Non editable property");
}
}
testRestTemplate.getForEntity(URI url, Class<T> responseType) Fetches the api response by hitting url and then converts response to the type given by responseType
Though the API response fetched by hitting URL received the nonEditableProperty value (parse inputMessage.getBody here), While deserializing it to responseType the value was lost, because of READ_ONLY Jackson property.
How would you annotate this bean to be mapped in hibernate ?
#Entity
public class PerformanceValues implements Serializable{
private static final long serialVersionUID = 1234850675335166109L;
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
//key is mass, value is distance needed
private Map<Integer, Integer> massToDist;
}
Each performanceValues entity has a unique map, and each map can be related to only one PerformanceValues (I guess this is a oneToOne relationship)
Thanks