I am using Hibernate3 and i have an entity with the following collection:
#ManyToMany
#JoinTable(name = "buys_publishers", joinColumns=#JoinColumn(name="buy_id", referencedColumnName = "buy_id"), inverseJoinColumns=#JoinColumn(name = "publisher_id", referencedColumnName = "publisher_id"))
#OrderBy("name")
private List<Publisher> publishers;
(fetch and cascade decelerations omitted)
The target entity (Publisher) inherits from an entity that holds the "name" attribute on which the #orderby is activated.
here is the target entity:
#Entity
#Table(name="publishers")
#PrimaryKeyJoinColumn(name="account_id")
public class Publisher extends Account{
/**
*
*/
private static final long serialVersionUID = 1L;
#Column(name = "publisher_id")
private Long publisherId;
public Long getPublisherId() {
return publisherId;
}
public void setPublisherId(Long publisherId) {
this.publisherId = publisherId;
}
}
and the super class:
#Entity
#Table(name="accounts")
#Inheritance(strategy=InheritanceType.JOINED)
public abstract class Account implements Serializable{
/**
*
*/
private static final long serialVersionUID = 1L;
#Id
#Column(name="id",unique=true, nullable=false )
#GeneratedValue( strategy = IDENTITY )
private long id;
#Column(name = "name")
private String name;
#Column(name = "account_type")
#Enumerated(EnumType.ORDINAL)
private AccountType accountType;
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 AccountType getAccountType() {
return accountType;
}
public void setAccountType(AccountType accountType) {
this.accountType = accountType;
}
}
the query that Hibernate generates is:
select publishers0_.buy_id as buy1_1_, publishers0_.publisher_id as publisher2_1_, publisher1_.account_id as id6_0_, publisher1_1_.account_type as account2_6_0_, publisher1_1_.name as name6_0_, publisher1_.publisher_id as publisher1_18_0_ from buys_publishers publishers0_ left outer join publishers publisher1_ on publishers0_.publisher_id=publisher1_.publisher_id left outer join accounts publisher1_1_ on publisher1_.account_id=publisher1_1_.id where publishers0_.buy_id=? order by accounts.name asc
it is clear from the query that the order by should be on publisher1_1_, am i doing something wrong or is this a bug?
Thank you.
This looks like HHH-4260 - #OrderBy does not work with inherited properties (and I wouldn't expect a short term resolution).
Related
I have used spring boot with hibernate. And swagger to generate the dtos and the api interface.
There are two entities. The project entity is the parent and application entity is the child. Have create a onetomany relationship. But when i try to persist. I see not applications getting added for a project.
Project Entity:
#Entity
#Table(name="ProjectEntity")
public class ProjectEntity {
#Id
#Column(name = "ProjectGuid", length = 36, nullable = false, unique = true)
#GeneratedValue(strategy=GenerationType.IDENTITY)
private Long id;
#Column(name = "Name")
private String name;
#OneToMany(mappedBy="projectApp", cascade = CascadeType.ALL)
private List<ApplicationEntity> apps=new ArrayList<>();
public ProjectEntity() {
}
public ProjectEntity(Long id, String name) {
this.id = id;
this.name = name;
}
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 List<ApplicationEntity> getApps() {
return apps;
}
public void setApps(List<ApplicationEntity> apps) {
this.apps = apps;
}
}
Application Entity:
#Entity
#Table(name="ApplicationEntity")
public class ApplicationEntity {
#Id
#Column(name = "Name", length = 36, nullable = false, unique = true)
private String name;
private String repositoryUrl;
#ManyToOne
#Cascade(org.hibernate.annotations.CascadeType.SAVE_UPDATE)
#JoinColumn(name = "ProjectGuid")
private ProjectEntity projectApp;
public ApplicationEntity() {
}
public ApplicationEntity(String name, String repositoryUrl) {
this.name = name;
this.repositoryUrl = repositoryUrl;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getRepositoryUrl() {
return repositoryUrl;
}
public void setRepositoryUrl(String repositoryUrl) {
this.repositoryUrl = repositoryUrl;
}
public ProjectEntity getProjectApp() {
return projectApp;
}
public void setProjectApp(ProjectEntity projectApp) {
this.projectApp = projectApp;
}
}
Controller operation:
ProjectEntity project = projectService.getProject(projectName);
List<ApplicationEntity> appList = new ArrayList<>();
ApplicationEntity appEntity = new ApplicationEntity(app.getName(), app.getRepositoryUrl());
applicationRepository.save(appEntity);
appList.add(appEntity);
project.setApps(appList);
projectRepository.save(project);
You need to set the id of the ProjectEntity on the owning side (which is the ApplicationEntity)
appEntity.setProjectApp(project);
Otherwise hibernate (and your database) does not know to which parent a ApplicationEntity belongs.
Here is an example many to one relation with spring data jpa :
#Data
#MappedSuperclass
public class BaseEntity {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;
}
#Data
#Entity
public class Question extends BaseEntity{
private String questionText;
private int anketId;
private int subjectId;
#OneToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL, orphanRemoval = true, mappedBy = "question")
List<Answer> answers;
}
#Data
#Entity
public class Answer extends BaseEntity{
private String answerText;
private String code;
private int score;
private int priority;
private boolean isValidAnswer;
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name = "question_id", referencedColumnName = "id", insertable = false, updatable = false)
private Question question;
}
#DataJpaTest
public class QuestionRepositoryTest {
#Autowired
TestEntityManager entityManager;
#Autowired
QuestionRepository sut;
#Test
public void it_should_create_question_wiht_answers() {
Question question = new Question();
question.setSubjectId(1);
question.setAnketId(1);
question.setQuestionText("test question");
Answer answer = new Answer();
answer.setAnswerText("answer");
answer.setCode("1a");
answer.setPriority(0);
answer.setValidAnswer(true);
question.setAnswers(Arrays.asList(answer));
entityManager.persistAndFlush(question);
List<Question> questionList = sut.findAll();
assertThat(questionList).containsExactly(question);
assertThat(questionList.get(0).getAnswers().size()).isGreaterThan(0);
}
}
I am new in Hibernate association mapping. When I tried to implement a small mapping logic all the previous foreign key is automatically update to Null
File Employee.java
#Entity
public class Employee extends CommonFields implements Serializable {
private static final long serialVersionUID = -723583058586873479L;
#Id
#Column(name = "id", insertable = false, updatable = false)
#GeneratedValue
private Long id;
private String employeeName;
#OneToMany(cascade = {CascadeType.ALL}, fetch = FetchType.LAZY)
#JoinColumn(name = "emp_id", referencedColumnName = "id")
private List<Education> education;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getEmployeeName() {
return employeeName;
}
public void setEmployeeName(String employeeName) {
this.employeeName = employeeName;
}
public List<Education> getEducation() {
return education;
}
public void setEducation(List<Education> education) {
this.education = education;
}
}
File Education.java
#Entity
public class Education extends CommonFields implements Serializable {
public Education() {
}
private static final long serialVersionUID = -723583058586873479L;
#Id
#Column(name = "id", insertable = false, updatable = false)
#GeneratedValue
private Long id;
private String course;
#ManyToOne
#JoinColumn(name = "emp_id")
private Employee employee;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getCourse() {
return course;
}
public void setCourse(String course) {
this.course = course;
}
public Employee getEmployee() {
return employee;
}
public void setEmployee(Employee employee) {
this.employee = employee;
}
}
Please anyone suggest a solution. I really stuck on this part last two days.
I would like to have a One-to-many relationship between 2 Entities, Consumer and Policy. One consumer should have several policies.
This is an example of a Consumer JSON object I would like to have:
{
id : 1,
name : "Peter",
endpoint: "123.456.778",
policies: [
{
id : 1,
name: "policy 01"
},
{
id : 2,
name: "policy 02"
}
]
}
This is what I have so far:
Policy Entity
#Entity
public class Policy {
#Id
#GeneratedValue
#Column(name = "id")
private Integer id;
#Column(name = "name")
private String name;
//getters and setters
}
Consumer Entity
#Entity
public class Consumer {
#Id
#GeneratedValue
#Column(name = "consumer_id")
private Integer id;
#Column(name = "name")
private String name;
#Column(name = "endpoint")
private String endpoint;
#OneToMany
#JoinColumn(??)
private List<Policy> policies;
//getters and setters
}
It's not that hard I think, but im trying now for several hours and can't get it done. I'm new to Spring, so if someone is able to help me, I would be very thankfull!
#Entity
public class Consumer {
#OneToMany(mappedBy = "consumer")
private List<Policy> policies;
}
#Entity
public class Policy {
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn("consumer_id")
private Consumer consumer;
}
fetch = FetchType.LAZY is not necessary, but desirable.
I have provided some basics here
what is #JoinColumn and how it is used in Hibernate
If you want to a Policy don't have a Consumer:
You can use a join table
#Entity
public class Consumer {
#OneToMany
private List<Policy> policies;
}
#Entity
public class Policy {
}
A unidirectional relation (a Policy table will have consumer_id column, but a Policy class doesn't have a Consumer)
#Entity
public class Consumer {
#OneToMany
#JoinColumn("consumer_id")
private List<Policy> policies;
}
#Entity
public class Policy {
}
Also, keep in mind, that if you want to use a Policy as tabular data (from a dictionary) you will need #ManyToMany.
Try this code :)
Your Consumer Class
#Entity
public class Consumer {
#Id
#GeneratedValue
#Column(name = "consumer_id")
private Integer id;
#Column(name = "name")
private String name;
#Column(name = "endpoint")
private String endpoint;
#OneToMany(cascade = CascadeType.ALL, mappedBy = "idPolicy")
private List<Policy> policies;
public Consumer() {
}
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;
}
public String getEndpoint() {
return endpoint;
}
public void setEndpoint(String endpoint) {
this.endpoint = endpoint;
}
public List<Policy> getPolicies() {
return policies;
}
public void setPolicies(List<Policy> policies) {
this.policies = policies;
}
}
Be aware that in the mapped by, you should use the name of the column that references Policy in your database, so if it's no policyId, use the name you gave to it
Your Policy Class
#Entity
public class Policy {
#Id
#GeneratedValue
#Column(name = "id")
private Integer id;
#Column(name = "name")
private String name;
#ManyToOne(optional = false)
private Consumer consumer;
public Policy() {
}
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;
}
}
I'm trying to access JPA Data with REST using spring-boot-starter-data-rest.
I want to use a different method than the CrudRepository has. But the framework responds with the following exception:
exception is org.springframework.data.repository.support.QueryMethodParameterConversionException: Failed to convert Brazil into hello.Country!] with root cause
org.springframework.core.convert.ConverterNotFoundException: No converter found capable of converting from type [java.lang.String] to type [#org.springframework.data.repository.query.Param hello.Country]
Endpoint
http://localhost:8080/rest/cities/search/findByCountry?name=Brazil
CityRepository.java
#RepositoryRestResource(collectionResourceRel = "cities", path = "cities")
public interface CityRepository extends CrudRepository<City, Long> {
List<City> findByCountry(#Param("name") Country country);
}
City.java
#JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
#Entity
#Table(name = "City")
public class City implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
#JsonInclude(value=Include.ALWAYS)
private long id;
#NotNull
#Column(name="name")
private String name;
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name = "country_id")
#Embedded
private Country country;
protected City() {}
public City(long id, String nome) {
this.id = id;
this.name = nome;
}
public Country getCountry() {
return country;
}
Country.java
#JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
#Entity
public class Country implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private long id;
#NotNull
#Column(name = "name")
private String name;
#OneToMany(fetch = FetchType.LAZY, mappedBy="country")
private Set<City> cities;
protected Country() {}
public Country(long id, String nome) {
this.id = id;
this.name = nome;
}
When I call http://localhost:8080/rest/cities/ , I get the list of cities normally. I setted the configureRepositoryRestConfiguration to config.setBasePath("/rest");
java.lang.String != hello.Country
In accordance with the documentation, we need to:
Use ResponseBody with consumes
Or create object from String like in REST hello world example
I did the following to resolve this issue, using a nativeQuery:
#Query(value = "SELECT * FROM City c JOIN Country co
ON c.country_id = co.id WHERE co.name
LIKE (CONCAT_WS('%',:name, '%'))", nativeQuery = true)
List<City> country(#Param("name") String name);
I followed this tutorial to implement in my domain model a many-to-many relationship with an extra column. It works great but I'm unable to create a criteria to query a field within the left side of my relation.
Taking this code
#Entity
#Table( name = "projects")
public class Project implements Cloneable, Serializable{
private Long id;
private String name;
private Set<ProjectOrganization> projectOrganizations = new HashSet<ProjectOrganization>(0);
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
#Column(nullable = false)
public Long getId() {
return this.id;
}
public void setId(Long id) {
this.id = id;
}
#Column(name = "name", length = 255, nullable = false)
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
}
#OneToMany(fetch = FetchType.EAGER, mappedBy = "pk.project")
#Cascade(value = { CascadeType.ALL })
public Set<ProjectOrganization> getProjectOrganizations() {
return this.projectOrganizations;
}
public void setProjectOrganizations(Set<ProjectOrganization> organizationProjects) {
this.projectOrganizations = organizationProjects;
}
}
#Entity
#Table(name = "projects_has_organizations")
#AssociationOverrides({ #AssociationOverride(name = "pk.project", joinColumns = #JoinColumn(name = "projects_id")),
#AssociationOverride(name = "pk.organization", joinColumns = #JoinColumn(name = "organizations_id"))
})
public class ProjectOrganization implements Cloneable, Serializable {
private ProjectOrganizationPK pk = new ProjectOrganizationPK();
private OrganizationRolesEnum role;
public ProjectOrganization() {
}
#Transient
public Organization getOrganization() {
return getPk().getOrganization();
}
public void setOrganization(Organization organization) {
getPk().setOrganization(organization);
}
#EmbeddedId
public ProjectOrganizationPK getPk() {
return pk;
}
public void setPk(ProjectOrganizationPK pk) {
this.pk = pk;
}
#Transient
public Project getProject() {
return getPk().getProject();
}
public void setProject(Project project) {
getPk().setProject(project);
}
#Enumerated(EnumType.STRING)
#Column(nullable = false, length = 50)
public OrganizationRolesEnum getRole() {
return role;
}
public void setRole(OrganizationRolesEnum role) {
this.role = role;
}
}
#Embeddable
public class ProjectOrganizationPK implements Cloneable, Serializable {
/** Generated serial version UID */
private static final long serialVersionUID = -4534322563105003365L;
private Organization organization;
private Project project;
#ManyToOne
public Organization getOrganization() {
return organization;
}
public void setOrganization(Organization organization) {
this.organization = organization;
}
#ManyToOne
public Project getProject() {
return project;
}
public void setProject(Project project) {
this.project = project;
}
}
#Entity
#Table(name = "organizations")
public class Organization implements Cloneable, Serializable {
private Long id;
private String name;
private Set<ProjectOrganization> projectOrganizations = new HashSet<ProjectOrganization>(0);
public Organization() {
}
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
#Column(nullable = false)
#Override
public Long getId() {
return this.id;
}
public void setId(Long id) {
this.id = id;
}
#Column(name = "name", nullable = false, length = 255)
#NotNull(message = "A name is required!")
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
}
#OneToMany(fetch = FetchType.EAGER, mappedBy = "pk.organization")
public Set<ProjectOrganization> getProjectOrganization() {
return this.projectOrganizations;
}
public void setProjectOrganization(Set<ProjectOrganization> projectOrganizations) {
this.projectOrganizations = projectOrganizations;
}
}
I want is to create a criteria to select a Project which has an organization with a requested name.
final Criteria crit = getSession().createCriteria(Project.class);
crit.createCriteria("projectOrganizations", "projectOrganization").
createAlias("pk.organization", "organization").
add( Restrictions.like("organization.name", "TEST"));
But when i run this code i have this error
2012-10-19 10:38:43,095 ERROR [org.hibernate.util.JDBCExceptionReporter] Unknown column 'organizati2_.name' in 'where clause'
and the sql query generated by hibernate is incomplete, doesn't join projects_has_organizations.organization with organization.id.. So it can't find column organization.name
SELECT
....
FROM
projects this_
INNER JOIN projects_has_organizations projectorg1_ ON this_.id = projectorg1_.projects_id
WHERE
projectorg1_.role =?
AND organizati2_. NAME LIKE ?
ORDER BY
this_.publish_date DESC
What's wrong with this code? How can i build query using criteria ?
I suspect that the problem is due to lazy fetching, try explicitly telling hibernate to eagerly fetch the property you need. This is done with the method
.setFetchMode("propertyName", FetchMode.EAGER)
So, in otherwords, try eagerly fetch the organisation property :)