I'm trying to model a business paying dividends and exposing a REST API to interact with such model.
I'm using spring-boot 2.2.0
Here is my Dividend entity:
#Entity
public class Dividend {
#EmbeddedId
DividendId dividendId;
#ManyToOne(fetch = FetchType.LAZY)
public Stock stock;
public Short period;
public Float amount;
#OneToOne
public Currency currency;
public static class DividendId implements Serializable
{
private DividendId() {}
public DividendId(String stockId, String payDay)
{
this.stockId = stockId;
this.payDay = payDay;
}
public String stockId;
public String payDay;
}
}
Doing a POST with the following body:
{
"amount": 0.6120,
"currency": {
"currencyId": "EUR"
},
"period": 2018,
"stock": {
"stockId": "BME:ENG"
},
"dividendId": {
"stockId": "BME:ENG",
"payDay": "2018-12-19"
}
}
dividendId is set to null and the other properties are not null
Why is dividendId set to null?
and How may I avoid repeating the stockId two times?
Related
I'm trying to create two unique fields in spring mongodb but without success I'm using:
#CompoundIndex(def = "{'product_id': 1, 'ip': 1}", unique = true)
Follow my entire class:
#Setter #Getter
#CompoundIndex(def = "{'product_id': 1, 'ip': 1}", unique = true)
#Document(collection = "star_rating")
public class Star_ratingMongo extends AuditMetadata implements Persistable<Long>{
#Id
#JsonProperty("product_id")
private Long product_id;
#JsonProperty("id_collection")
private Long emberId;
public Long getEmberId() {
return product_id;
}
#JsonProperty("ip")
private String ip;
#JsonProperty("star")
private Integer star;
#Override
#Nullable
public Long getId() {
return product_id;
}
#Override
public boolean isNew() {
return !persisted;
}
}
Does anyone know where I'm going wrong?
[SOLVED]
To solve the problem I found the following code:
#Configuration
#DependsOn("mongoTemplate")
public class CollectionsConfig {
#Autowired
private MongoTemplate mongoTemplate;
#PostConstruct
public void initIndexes() {
mongoTemplate.indexOps(Star_ratingMongo.class)
.ensureIndex(new Index().on("product_id", Sort.Direction.DESC)
.on("ip", Sort.Direction.DESC).unique());
}
}
so I have done two entities with one to many relationship,
I have one category whohas many visitors,
and this is my code:
this is the Category entity :
#Entity
public class Category implements Serializable {
private Integer id;
private String name;
private List<Visitor> visitors = new ArrayList<Visitor>();
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
#OneToMany(cascade=CascadeType.REMOVE, fetch = FetchType.LAZY, mappedBy = "category", orphanRemoval = true)
public List<Visitor> getVisitors() {
return visitors;
}
public void setVisitors(List<Visitor> visitors) {
this.visitors = visitors;
}
}
and here is the Visitor Entity :
#Entity
public class Visitor extends User {
private String passport;
private String citizenship;
private String gender;
private Company company;
private Category category;
public String getPassport() {
return passport;
}
public void setPassport(String passport) {
this.passport = passport;
}
public String getCitizenship() {
return citizenship;
}
public void setCitizenship(String citizenship) {
this.citizenship = citizenship;
}
#ManyToOne(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
public Category getCategory() {
return category;
}
public void setCategory(Category category) {
this.category = category;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
#ManyToOne(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
public Company getCompany() {
return company;
}
public void setCompany(Company company) {
this.company = company;
}
and here is the service method who list all the visitors and works fine :
public List<Visitor> findAllVisitors() {
return em.createQuery(
"SELECT v from Visitor v left join fetch v.category",
Visitor.class).getResultList();
}
with this method I can list all the visitors each with his category object associated,
now the problem is in the other side of the relationship ,
here is the method who list the categories each with their visitors list :
public List<Category> findAllCategories() {
return em.createQuery("select c from Category c",
Category.class).getResultList();
}
I want to get the list of all the categories but when I call this method in a REST call , I get this result :
I want just to get a simple list of categories (id and name).
what is wrong in my code please help me i am confused.
UPDATE:
this is how I get JSON from persistence context with RESTful method :
#Inject
private CategoryServiceLocal categoryServiceLocal;
#GET
#Produces(MediaType.APPLICATION_JSON)
public List<Category> dofindAllCategories() {
return categoryServiceLocal.findAllCategories();
}
You have a lazy association from Category to visitors. To load all visitors you need to use left join fetch too.
select c from Category c left join fetch c.visitors
Please, use additional annotations to control how to JSON generated
Infinite Recursion with Jackson JSON and Hibernate JPA issue
I have base class as
#XmlRootElement
public abstract class BaseDO {
#Id
protected ObjectId id;
/**
* We'll only provide getters for these attributes, setting is done in #PrePersist.
*/
protected Date creationDate;
protected Date lastChange;
.....and user class as:
#Entity(value = "user", noClassnameStored = true)
#XmlRootElement(name = "user")
#XmlSeeAlso({BaseDO.class})
public class AtsUser extends BaseDO {
public static enum UserStatus {
CREATED, ACTIVE, INACTIVE, DELETED, CLOSED
}
#Indexed(unique = false)
private String firstName;
#Indexed(unique = false)
private String lastName;
#Indexed(unique = false)
private String email;
private String password;
#Embedded
private List<UserRoleDO> roles = new ArrayList<UserRoleDO>();
// private String userId; //TODO add this later
private UserStatus status;
private String success;
.....
the REST API is as follows:
#Path("user/validate")
public class AtsUserValidationService {
private AtsUserDao dao;
SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-yyyy");
#GET #Path("/query")
#Produces(MediaType.APPLICATION_JSON)
public AtsUser getUserByEmailn(#QueryParam("email") String email) {
System.out.println("in getUserByEmailn");
dao = new AtsUserMongodbDao();
System.out.println("firstName " + email);
AtsUser atsUser = dao.getAtsUsersByEmail(email) ;
return atsUser ;
}
....
The morphia Dao is as follows:
#Override
public AtsUser getAtsUsersByEmail(String email) {
AtsUser atsUser = null;
if ((email == null) || email.isEmpty() ) {
return null;
}
System.out.println("getAtsUsersByEmail:" + email);
Query<AtsUser> query = mongoDatastore.find(AtsUser.class);
query.field("email").equal(email);
atsUser = query.get();
return atsUser;
}
.....
When I debug, I see the id field and creationDate fields in the java code, but the JSON does not contain that. Here is what my JSON looks like.
{
"id": null,
"code": "admin",
"desc": "admin",
"email": "admin#aa.com",
"firstName": "admin",
"lastName": "admin",
"password": "admin",
"status": "CREATED"
}
Why my id is null and how can i get elements from base class to show up in the JSON ?
I believe you need to annotate the base class with #Entity as well. It worked for me (using morphia 0.109).
I have a class hierarchy for JPA entities with the base class being a MappedSuperclass which has one ID defined. I am trying to use a composite key in a subclass however that does not seem to work
My code looks like this
#MappedSuperclass
public class BaseEntity implements Serializable {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Basic(optional = false)
#Column(name = "id")
protected Long id;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
}
#Entity
#EntityListeners(EntityBaseListener.class)
#Inheritance(strategy=InheritanceType.JOINED)
#Table(name = "catalog_entity")
public class BaseCatalogEntity extends BaseEntity {
#Column(name = "created_at", nullable = false)
#Temporal(TemporalType.TIMESTAMP)
private Date createdAt;
#Column(name = "updated_at", nullable = false)
#Temporal(TemporalType.TIMESTAMP)
private Date updatedAt;
public void setCreatedAt(Date date)
{
createdAt = date;
}
public void setUpdatedAt(Date date)
{
updatedAt = date;
}
public Date getCreatedAt() {
return createdAt;
}
public Date getUpdatedAt() {
return updatedAt;
}
}
#Entity
#Table(schema = "student_catalog")
#IdClass(value = StudentCatalog.StudentCatalogPK.class)
public class StudentCatalog extends BaseCatalogEntity {
#Id
#Column(name = "name", nullable = false, length = 100)
private String name;
#Id
#Column(name = "version", nullable = false)
private Integer version;
#Column(name = "description" , length = 255)
private String description;
#Column(name = "vendor" , length = 50)
private String vendor;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getVersion() {
return version;
}
public void setVersion(Integer version) {
this.version = version;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getVendor() {
return vendor;
}
public void setVendor(String vendor) {
this.vendor = vendor;
}
public static class StudentCatalogPK implements Serializable {
private Long id;
private String name;
private Integer version;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getVersion() {
return version;
}
public void setVersion(Integer version) {
this.version = version;
}
#Override
public boolean equals(Object obj) {
boolean result = false;
if(obj != null && (obj instanceof StudentCatalogPK)) {
StudentCatalogPK other = (StudentCatalogPK)obj;
result = (Objects.equals(this.id, other.id) && Objects.equals(this.name, other.name) &&
Objects.equals(this.version, other.version));
}
return result;
}
#Override
public int hashCode() {
return (27780 + (this.id != null ? this.id.hashCode() : 0) +
(this.version != null ? this.version.hashCode() : 0) +
(this.name != null ? this.name.hashCode() : 0));
}
}
}
I get the following exception:
Exception Description: Invalid composite primary key specification. The names of the primary key fields or properties in the primary key class [com.example.jpa.StudentCatalog$StudentCatalogPK] and those of the entity bean class [class com.example.jpa.StudentCatalog] must correspond and their types must be the same. Also, ensure that you have specified ID elements for the corresponding attributes in XML and/or an #Id on the corresponding fields or properties of the entity class.
I am using Eclipselink 2.5.1. Is there a way I can get this to work without changing the BaseEntity and BaseCatalogEntity classes?
It is not legal in JPA to redefine the id in subclasses. This would lead to ambiguities in the table mappings as well as in polymorphic queries.
The desire to extend the key defined in a superclass is a common issue when business keys are used for DB identity. I would advise to use only surrogate keys (like UUID) for DB identity and business keys for instance identity.
Under following conditions:
your base entity should use TABLE_PER_CLASS inheritance (and as I can see it is)
your base entity (composite key) key is of the same type as that one you want to have in your derived class (so there should be also composite key of String and Integer).
You can use #AttributeOverride annotation under class declaration, removing #Id fields from it:
#AttributeOverride(name = "id", column = #Column(name = "NAME"))
This - in result, can change column name in derived entity's table and that's the most you can acheive.
When using #MappedSuperClass, it would be advisable to make the BaseEntity Class as abstract and then extending the Base class from other Entity classes.
Cleaner approach keeping inheritance in mind and designing your application.
How can I write the following relationship in JPA. I have 6 tables: Products, Features, Functions, Tasks, Permissions and Users. I need to be able to create a Product object model that contains a list of Features. Each Feature object model in the list will contain a list of Functions and each Function will contain a list of Tasks. I have no issue building each one of these entities and then relating them together but the problem comes in when I need to filter each entity by its relationship to the Permission table. I'm not sure this can be done. When I map the Permissions entity to each other entity, I seem to get a many-to-many join and too many values are returned. Any insight would be great.
Products
prod_id
user_id
Features
prod_id
feature_id
Functions
prod_id
feature_id
function_id
Tasks
prod_id
feature_id
function_id
task_id
Permissions
prod_id
feature_id
function_id
task_id
user_id
User
user_id
Here is my Permission entity class:
import java.io.Serializable;
import javax.persistence.*;
import static javax.persistence.CascadeType.ALL;
import java.math.BigDecimal;
#IdClass(menu.entity.PermissionKey.class)
#Entity
#Table(name="PERMISSIONS")
#NamedQuery(name = "findPermissionsByUserId",query = "SELECT p FROM Permission p WHERE p.userId = :userId")
public class Permission implements Serializable {
private static final long serialVersionUID = 1L;
#Column(name="AUTH", length=1)
private String auth;
#Column(name="PERM_DESC", length=80)
private String permDesc;
#Id
#Column(name="COMPANY",
nullable = false,
insertable = false,
updatable = false,
length=2)
private String company;
#Id
#Column(name="USER_ID",
nullable = false,
insertable = false,
updatable = false,
length=30)
private String userId;
#Id
#Column(name="PROD_ID", precision=22)
private BigDecimal prodId;
#Id
#Column(name="FEATURE", precision=22)
private BigDecimal feature;
#Id
#Column(name="FUNC", precision=22)
private BigDecimal func;
#Id
#Column(name="TASK", precision=22)
private BigDecimal task;
//uni-directional one-to-one association to Product
#OneToOne(cascade=ALL, mappedBy="permission")
private Product productObj;
#OneToOne(cascade=ALL, mappedBy="permission")
private Feature featureObj;
#OneToOne(cascade=ALL, mappedBy="permission")
private Function functionObj;
#OneToOne(cascade=ALL, mappedBy="permission")
private Task taskObj;
#ManyToOne(optional = false, fetch = FetchType.LAZY)
#JoinColumns({
#JoinColumn(name="USER_ID", referencedColumnName="USER_ID"),
#JoinColumn(name="COMPANY", referencedColumnName="COMPANY")
})
private User user;
public Permission() {
}
public String getAuth() {
return this.auth;
}
public void setAuth(String auth) {
this.auth = auth;
}
public String getCompany() {
return this.company;
}
public void setCompany(String company) {
this.company = company;
}
public String getPermDesc() {
return this.permDesc;
}
public void setPermDesc(String permDesc) {
this.permDesc = permDesc;
}
public String getUserId() {
return this.userId;
}
public void setUserId(String userId) {
this.userId = userId;
}
public BigDecimal getProdId() {
return prodId;
}
public void setProdId(BigDecimal prodId) {
this.prodId = prodId;
}
public BigDecimal getFeature() {
return this.feature;
}
public void setFeature(BigDecimal feature) {
this.feature = feature;
}
public BigDecimal getFunc() {
return func;
}
public void setFunc(BigDecimal func) {
this.func = func;
}
public BigDecimal getTask() {
return task;
}
public void setTask(BigDecimal task) {
this.task = task;
}
public Product getProductObj() {
return this.productObj;
}
public void setProductObj(Product productObj) {
this.productObj = productObj;
}
public Feature getFeatureObj() {
return this.featureObj;
}
public void setFeatureObj(Feature featureObj) {
this.featureObj = featureObj;
}
public Function getFunctionObj() {
return this.functionObj;
}
public void setFunctionObj(Function functionObj) {
this.functionObj = functionObj;
}
public User getUser() {
return this.user;
}
public void setUser(User user) {
this.user = user;
}
public Task getTaskObj() {
return this.taskObj;
}
public void setTaskObj(Task taskObj) {
this.taskObj = taskObj;
}
}