Am new to JPA. Building the select query with the where clause. I need to select from table Contacts all ContactName's that equals the value of the String name.
Used the code below to create DB table:
CREATE TABLE Contacts (
ContactId BIGINT UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
ContactName VARCHAR(100) NOT NULL,
ContactEmailID VARCHAR(100) NOT NULL,
UserName VARCHAR(100) NOT NULL,
INDEX Contact_Names (ContactName)
) ENGINE = InnoDB;
Following is my Entity class;
#Entity
private String UserName;
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "ContactId")
public long getContactId() {
return ContactId;
}
public void setContactId(long contactId) {
ContactId = contactId;
}
#Basic
#Column(name = "UserName")
public String getUserName() {
return UserName;
}
public void setUserName(String UserName) {
this.UserName = UserName;
}
Following is my ContactServlet class code where i am trying to write my CriteriaBuilder code.
EntityManager manager = null;
EntityTransaction transaction = null;
try{
manager = this.factory.createEntityManager();
transaction = manager.getTransaction();
transaction.begin();
CriteriaBuilder cb = manager.getCriteriaBuilder();
CriteriaQuery<Contact> q1 = cb.createQuery(Contact.class);
Root<Contact> postRoot = q1.from(Contact.class);
q1.select(postRoot).where(cb.equal(postRoot.get("UserName"), name));
TypedQuery<Contact> qry = manager.createQuery(q1);
List<Contact> result = qry.getResultList();
for (Contact contactInstance : result)
{
DBContactName = contactInstance.getContactName().trim();
DBContactEmail = contactInstance.getContactEmailID().trim();
.....
Don't know where am i going wrong??
Following is the error while executing my project:
java.lang.IllegalArgumentException: Unable to resolve attribute [UserName] against path at org.hibernate.jpa.criteria.path.AbstractPathImpl.unknownAttribute(AbstractPathImpl.java:117) at org.hibernate.jpa.criteria.path.AbstractPathImpl.locateAttribute(AbstractPathImpl.java:214) at org.hibernate.jpa.criteria.path.AbstractPathImpl.get(AbstractPathImpl.java:185) at com.ContactServlet.doPost(ContactServlet.java:110) at javax.servlet.http.HttpServlet.service(HttpServlet.java:644) at javax.servlet.http.HttpServlet.service(HttpServlet.java:725) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:534) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1081) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658) at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745)
Try with:
q1.select(postRoot).where(cb.equal(postRoot.get("userName"), name));
The u of UserName attribute in lower case.
Related
What is wrong: I'm trying to implement login using Spring Security. I'm using Spring Security's default endpoint login. I keep receiving 500s and I believe it's due to incorrect joint because when I'm printing
public Set<Role> getRoles() {
System.out.println("roles");
System.out.println(roles);
return roles;
}
roles is null. 'll show my stack trace at the end of the question.
What I want to have: correct working join.
My code
Join:
#OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
#JoinTable(
name = "userrole",
joinColumns = #JoinColumn(name = "iduser"),
inverseJoinColumns = #JoinColumn(name = "roleid"))
private Set<Role> roles;
Whole Users model:
#Entity
#Table(name = "user_1")
public class Users {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
#Column(name = "iduser")
private Integer id;
#Column(name="id_points")
private Integer idPoints;
#Column(name="username")
private String userName;
#Column(name="isblocked")
private Boolean isBlocked;
#Column(name="email")
private String email;
#Column(name="lastname")
private String lastName;
#Column(name="firstname")
private String firstName;
#Column(name="password")
private String password;
#Column(name="token")
private String token;
#OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
#JoinTable(
name = "userrole",
joinColumns = #JoinColumn(name = "iduser"),
inverseJoinColumns = #JoinColumn(name = "roleid"))
private Set<Role> roles;
public Users() {
}
public Users(Users users) {
this.id = users.getId();
this.idPoints = users.getIdPoints();
this.userName = users.getUserName();
this.isBlocked = users.getBlocked();
this.email = users.getEmail();
this.lastName = users.getLastName();
this.firstName = users.getFirstName();
this.password = users.getPassword();
this.token = users.getToken();
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Integer getIdPoints() {
return idPoints;
}
public void setIdPoints(Integer idPoints) {
this.idPoints = idPoints;
}
public String getUserName() {
System.out.println(userName);
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public Boolean getBlocked() {
return isBlocked;
}
public void setBlocked(Boolean blocked) {
isBlocked = blocked;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getToken() {
return token;
}
public void setToken(String token) {
this.token = token;
}
public Set<Role> getRoles() {
System.out.println("roles");
System.out.println(roles);
return roles;
}
public void setRoles(Set<Role> roles) {
this.roles = roles;
}
}
CustomUsersDetails:
package com.shareabook.model;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import java.util.Collection;
import java.util.stream.Collectors;
public class CustomUserDetails extends Users implements UserDetails {
public CustomUserDetails(final Users users) {
super(users);
}
#Override
public Collection<? extends GrantedAuthority> getAuthorities() {
return getRoles()
.stream()
.map(role -> new SimpleGrantedAuthority("ROLE_" + role.getRole()))
.collect(Collectors.toList());
}
#Override
public String getPassword() {
return super.getPassword();
}
#Override
public String getUsername() {
return super.getUserName();
}
#Override
public boolean isAccountNonExpired() {
return true;
}
#Override
public boolean isAccountNonLocked() {
return true;
}
#Override
public boolean isCredentialsNonExpired() {
return true;
}
#Override
public boolean isEnabled() {
return true;
}
}
Role model
#Entity
#Table(name = "role")
public class Role {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
#Column(name = "roleid")
private Integer role_id;
#Column(name = "role")
private String role;
public Role() {
}
public Integer getRole_id() {
return role_id;
}
public void setRole_id(Integer role_id) {
this.role_id = role_id;
}
public String getRole() {
System.out.println("role");
System.out.println(role);
return role;
}
public void setRole(String role) {
this.role = role;
}
}
How I create database:
CREATE TABLE Role (
roleId INTEGER NOT NULL,
role VARCHAR NOT NULL,
CONSTRAINT pkrole PRIMARY KEY (roleId)
);
CREATE SEQUENCE user_1_iduser_seq;
CREATE TABLE User_1 (
idUser INTEGER NOT NULL DEFAULT nextval('user_1_iduser_seq'),
id_points INTEGER NOT NULL,
userName VARCHAR NOT NULL,
isBlocked BOOLEAN DEFAULT False NOT NULL,
email VARCHAR NOT NULL,
lastName VARCHAR NOT NULL,
firstName VARCHAR NOT NULL,
password VARCHAR NOT NULL,
token VARCHAR,
CONSTRAINT pkuser PRIMARY KEY (idUser)
);
ALTER SEQUENCE user_1_iduser_seq OWNED BY User_1.idUser;
CREATE TABLE userRole (
idUser INTEGER NOT NULL,
roleId INTEGER NOT NULL
);
ALTER TABLE userRole ADD CONSTRAINT role_userrole_fk
FOREIGN KEY (roleId)
REFERENCES Role (roleId)
ON DELETE NO ACTION
ON UPDATE NO ACTION
NOT DEFERRABLE;
ALTER TABLE User_1 ADD CONSTRAINT points_us_fk
FOREIGN KEY (id_points)
REFERENCES Points (idPoints)
ON DELETE CASCADE
ON UPDATE CASCADE
NOT DEFERRABLE;
ALTER TABLE userRole ADD CONSTRAINT user_1_userrole_fk
FOREIGN KEY (idUser)
REFERENCES User_1 (idUser)
ON DELETE NO ACTION
ON UPDATE NO ACTION
NOT DEFERRABLE;
How I populate databse with data:
INSERT INTO Role VALUES(1, 'ADMIN');
INSERT INTO Role VALUES(2, 'USER');
INSERT INTO Publisher VALUES(1, 'Zielona Sowa');
INSERT INTO Category VALUES(1,'kryminal');
INSERT INTO Points VALUES(1,20);
INSERT INTO Author VALUES(1, 'Tolkien', 'John Ronald Reuel');
INSERT INTO User_1 VALUES(1,1,'oliwka',false,'oliwka#wp.pl','m','o','jakies');
INSERT INTO userRole VALUES(1,1);
INSERT INTO Book VALUES(1,1,1,'Hobbit',null,3,false,1937);
INSERT INTO BooksByAuthors VALUES(1,1,1);
INSERT INTO BooksByCategory VALUES(1,1,1);
Stack trace:
Hibernate: select users0_.iduser as iduser1_1_, users0_.email as email2_1_, users0_.firstname as firstnam3_1_, users0_.id_points as id_point4_1_, users0_.isblocked as isblocke5_1_, users0_.lastname as lastname6_1_, users0_.password as password7_1_, users0_.token as token8_1_, users0_.username as username9_1_ from user_1 users0_ where users0_.username=?
Hibernate: select roles0_.iduser as iduser1_2_0_, roles0_.roleid as roleid2_2_0_, role1_.roleid as roleid1_0_1_, role1_.role as role2_0_1_ from userrole roles0_ inner join role role1_ on roles0_.roleid=role1_.roleid where roles0_.iduser=?
oliwka
roles
null
2017-10-29 15:04:50.241 ERROR 11896 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception
java.lang.NullPointerException: null
at com.shareabook.model.CustomUserDetails.getAuthorities(CustomUserDetails.java:18) ~[classes/:na]
at org.springframework.security.authentication.dao.AbstractUserDetailsAuthenticationProvider.createSuccessAuthentication(AbstractUserDetailsAuthenticationProvider.java:225) ~[spring-security-core-4.2.2.RELEASE.jar:4.2.2.RELEASE]
at org.springframework.security.authentication.dao.AbstractUserDetailsAuthenticationProvider.authenticate(AbstractUserDetailsAuthenticationProvider.java:197) ~[spring-security-core-4.2.2.RELEASE.jar:4.2.2.RELEASE]
at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:174) ~[spring-security-core-4.2.2.RELEASE.jar:4.2.2.RELEASE]
at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:199) ~[spring-security-core-4.2.2.RELEASE.jar:4.2.2.RELEASE]
at org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter.attemptAuthentication(UsernamePasswordAuthenticationFilter.java:94) ~[spring-security-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:212) ~[spring-security-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) ~[spring-security-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:96) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64) ~[spring-security-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) ~[spring-security-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) ~[spring-security-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:214) ~[spring-security-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:177) ~[spring-security-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.14.jar:8.5.14]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.14.jar:8.5.14]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.14.jar:8.5.14]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.14.jar:8.5.14]
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:105) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.14.jar:8.5.14]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.14.jar:8.5.14]
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.14.jar:8.5.14]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.14.jar:8.5.14]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.14.jar:8.5.14]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.14.jar:8.5.14]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) ~[tomcat-embed-core-8.5.14.jar:8.5.14]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-8.5.14.jar:8.5.14]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478) [tomcat-embed-core-8.5.14.jar:8.5.14]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [tomcat-embed-core-8.5.14.jar:8.5.14]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80) [tomcat-embed-core-8.5.14.jar:8.5.14]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.14.jar:8.5.14]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) [tomcat-embed-core-8.5.14.jar:8.5.14]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799) [tomcat-embed-core-8.5.14.jar:8.5.14]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.14.jar:8.5.14]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-embed-core-8.5.14.jar:8.5.14]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455) [tomcat-embed-core-8.5.14.jar:8.5.14]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.14.jar:8.5.14]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_77]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_77]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.14.jar:8.5.14]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_77]
The association between User and Role is Many-to-Many and not One-to-many.
Change your mappings like so in the User entity
#ManyToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
#JoinTable(
joinColumns = #JoinColumn(name = "iduser"),
inverseJoinColumns = #JoinColumn(name = "roleid")
)
private Set<Role> roles;
I m new to hibernate and having error Unknown column in OneToMany mapping. I m trying to implement the one to many relationships using hibernate but having an error.
Here is my Code:
Department Class:
#Entity
#Table(name="department")
public class Department {
#Id
#Column(name="dept_id")
private int id;
#Column(name="dept_name")
private String name;
#OneToMany(mappedBy="department", cascade=CascadeType.ALL, fetch=FetchType.EAGER)
private Collection<Employee> employees = new ArrayList<Employee>();
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Collection<Employee> getEmployees() {
return employees;
}
public void setEmployees(Collection<Employee> employees) {
this.employees = employees;
}
}
Employee Class:
#Entity
#Table(name = "employee")
public class Employee {
#Column(name="emp_id")
#Id
private int id;
#Column(name="emp_name")
private String name;
#ManyToOne
private Department department;
public Department getDepartment() {
return department;
}
public void setDepartment(Department department) {
this.department = department;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
Employee Dao Class:
public class EmployeeDao {
public void addEmployee(Employee emp, int id){
Department department = new Department();
SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
Session session = sessionFactory.openSession();
session.beginTransaction();
department = (Department) session.get(Department.class, id);
emp.setDepartment(department);
department.getEmployees().add(emp);
session.save(emp);
session.getTransaction().commit();
session.close();
sessionFactory.close();
}
}
Here is my Database :
CREATE TABLE `department` (
`dept_id` int(11) NOT NULL,
`dept_name` varchar(255) DEFAULT NULL
)
CREATE TABLE `employee` (
`emp_id` int(11) NOT NULL,
`emp_name` varchar(255) DEFAULT NULL,
`dept_id` int(11) DEFAULT NULL
)
Stack Trace :
WARNING: #{employee.addEmployee}: org.hibernate.exception.SQLGrammarException: could not load an entity: [com.hibCollection.bean.Department#0]
javax.faces.FacesException: #{employee.addEmployee}: org.hibernate.exception.SQLGrammarException: could not load an entity: [com.hibCollection.bean.Department#0]
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118)
at javax.faces.component.UICommand.broadcast(UICommand.java:315)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:722)
Caused by: javax.faces.el.EvaluationException: org.hibernate.exception.SQLGrammarException: could not load an entity: [com.hibCollection.bean.Department#0]
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:101)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
... 27 more
Caused by: org.hibernate.exception.SQLGrammarException: could not load an entity: [com.hibCollection.bean.Department#0]
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:92)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
at org.hibernate.loader.Loader.loadEntity(Loader.java:2041)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:86)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:76)
at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3293)
at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:496)
at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:477)
at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:227)
at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:285)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:152)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:1090)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:1005)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:998)
at com.hibCollection.dao.EmployeeDao.addEmployee(EmployeeDao.java:21)
at com.hibCollection.mangedBean.EmployeeManageBean.addEmployee(EmployeeManageBean.java:29)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.el.parser.AstValue.invoke(AstValue.java:278)
at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:273)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87)
... 28 more
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'employees1_.department_dept_id' in 'field list'
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
at com.mysql.jdbc.Util.getInstance(Util.java:381)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1031)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:957)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3376)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3308)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1837)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1961)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2543)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1737)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1888)
at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:208)
at org.hibernate.loader.Loader.getResultSet(Loader.java:1953)
at org.hibernate.loader.Loader.doQuery(Loader.java:802)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:274)
at org.hibernate.loader.Loader.loadEntity(Loader.java:2037)
... 49 more
Can you please tell me what I'm doing wrong here? :)
Try make so
#ManyToOne
#JoinColumn(name = "dept_id")
private Department department;
The default column name for mapping is of type,
table_name + '_' + target_table_primary_key. This is why it is looking for department_dept_id
You can specify mapping column using annotations. #JoinColumn(name="dept_id").
Property-based access is the right way for using #OneToMany and #ManyToOne annotation
Use #OneToMany like below:
private Collection<Employee> employees;
#OneToMany(mappedBy="department", cascade=CascadeType.ALL, fetch=FetchType.EAGER)
public Collection<Employee> getEmployees() {
return employees;
}
public void setEmployees(Collection<Employee> employees) {
this.employees = employees;
}
And use #ManyToOne like below:
private Department department;
#ManyToOne
#JoinColumn(name = "dept_id")
public Department getDepartment() {
return department;
}
public void setDepartment(Department department) {
this.department = department;
}
Also you need to use an empty constructor in your model classes, as hibernate wants it.
If you use #OnetoMany and #ManyToOne with File-based access then you will get the following error
Initial SessionFactory creation failed.org.hibernate.MappingException: Could not determine type for: java.util.List, for columns: [org.hibernate.mapping.Column(relatedResources)]
I have 2 tables: Persons and Accounts(one to many relationship).
In my Person class I have:
#Entity
#Table(name="persons")
public class Person {
#Id
#Column(name="id")
#GeneratedValue(strategy=GenerationType.IDENTITY)
private int id;
private String name;
private String username;
private String password;
private String country;
private boolean admin;
#OneToMany(mappedBy="person")
#Cascade({CascadeType.ALL})
private Set<Account> accounts;
public Person(String name, String username, String password, String country, boolean admin) {
this.name = name;
this.username = username;
this.password = password;
this.country = country;
this.admin = admin;
}
public Person(){ }
//getters and setters
}
In my Account class I have:
#Entity
#Table(name="accounts")
public class Account {
#Id
#Column(name="accountId")
#GeneratedValue(strategy=GenerationType.IDENTITY)
private int accountId;
private int balance;
private String currency;
#ManyToOne
#JoinColumn(name="id")
private Person person;
public Account(int balance, String currency) {
this.balance = balance;
this.currency = currency;
}
private Account(){ }
//getters and setters
}
I'm using SQL server and the tables are created with the following code:
CREATE TABLE persons(
id int IDENTITY(1,1) PRIMARY KEY NOT NULL,
name nvarchar(30) NOT NULL,
username nvarchar(30) NOT NULL,
password nvarchar(30) NOT NULL,
country nvarchar(30) NOT NULL,
admin bit NOT NULL
);
CREATE TABLE accounts(
accountId int IDENTITY(10000,1) PRIMARY KEY NOT NULL,
balance int NOT NULL,
currency nvarchar(5) NOT NULL,
userId int NOT NULL foreign key references persons(id)
);
In my controller I'm saving a person and it works, then when trying to save 2 accounts of that person I get the following error: java.sql.SQLException: Invalid column name 'id'. The code:
Person person = new Person("Maurice","vvvvv","ccccc", "France", true);
this.personService.addPerson(person);
Account account1 = new Account(1000, "eur");
Account account2 = new Account(700, "gbp");
account1.setPerson(person);
account2.setPerson(person);
this.accountService.addAccount(account1);
this.accountService.addAccount(account2);
It's not the first time when I'm using a one-to-many relationship but I haven't encountered this error before.
The complete stacktrace:
SEVERE: Servlet.service() for servlet [appServlet] in context with
path [/BankingApp] threw exception [Request processing failed; nested
exception is org.hibernate.exception.SQLGrammarException: could not
execute statement] with root cause java.sql.SQLException: Invalid
column name 'id'. at
net.sourceforge.jtds.jdbc.SQLDiagnostic.addDiagnostic(SQLDiagnostic.java:372)
at net.sourceforge.jtds.jdbc.TdsCore.tdsErrorToken(TdsCore.java:2988)
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2421) at
net.sourceforge.jtds.jdbc.TdsCore.getMoreResults(TdsCore.java:671) at
net.sourceforge.jtds.jdbc.JtdsStatement.processResults(JtdsStatement.java:613)
at
net.sourceforge.jtds.jdbc.JtdsStatement.executeSQL(JtdsStatement.java:572)
at
net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeUpdate(JtdsPreparedStatement.java:727)
at
org.apache.commons.dbcp2.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:98)
at
org.apache.commons.dbcp2.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:98)
at
org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:208)
at
org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:96)
at
org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:58)
at
org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3032)
at
org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3558)
at
org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:98)
at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:492)
at
org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:197)
at
org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:181)
at
org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:216)
at
org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:334)
at
org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:289)
at
org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:195)
at
org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:126)
at
org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:206)
at
org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:149)
at
org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:75)
at
org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:811)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:784)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:789)
at com.haynes.dao.AccountDAOImpl.addAccount(AccountDAOImpl.java:26)
at
com.haynes.services.AccountServiceImpl.addAccount(AccountServiceImpl.java:21)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at
java.lang.reflect.Method.invoke(Unknown Source) at
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at
org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at
org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281)
at
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
at com.sun.proxy.$Proxy135.addAccount(Unknown Source) at
com.haynes.controllers.Controller.addPerson(Controller.java:47) at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at
java.lang.reflect.Method.invoke(Unknown Source) at
org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
at
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
at
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
at
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:776)
at
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:705)
at
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
at
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) at
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:528)
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1099)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:670)
at
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2508)
at
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2497)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
#JoinColumn(name="id") should be #JoinColumn(name="userId")
Because userId is used as a foreign key in Accounts Table
It appears as if id column field for Person.java or Account.java is stored as Id in your database, while in your entity you have named it as id.
Can you please share the Person.java class and a full stacktrace of the error and please also check your database to make sure the fields are correct
Thanks.
Getting java.sql.SQLException: Invalid column name even though column with same name are in table. what can be a reason?
I am trying to call sp with below code:
Session session = HibernateUtil.getSessionFactory().openSession();
Query query = session.getNamedQuery("EMPLOYEE.PRC_HB_EMP_SP1");
query.setParameter("IN_EMPID", empId);
List<Employee> empList = query.list();
System.out.println(empList);
Entity class Employee:
#Entity
#Table(name = "EMPLOYEE")
//#org.hibernate.annotations.NamedNativeQuery(name = "EMPLOYEE.PRC_HB_EMP_SP1", query = "call PRC_HB_EMP_SP1(?,:IN_EMPID)", callable = true, resultClass = Employee.class)
#org.hibernate.annotations.NamedNativeQuery(name = "EMPLOYEE.PRC_HB_EMP_SP1", query = "call PRC_HB_EMP_SP1(?,:IN_EMPID)", callable = true, resultClass = Employee.class)
public class Employee implements Serializable {
private static final long serialVersionUID = -723583058586873479L;
#Id
#Column(name = "EMPID")
private Integer empId;
#Column(name = "EMPNAME")
private String empName;
#Column(name = "ADDRESS")
private String empAddress;
#Column(name = "SALARY")
private Long salary;
#Column(name = "EMPAGE")
private Integer empAge;
............
}
here is sp:
create or replace PROCEDURE PRC_HB_EMP_SP1
(
Out_value OUT SYS_REFCURSOR,
IN_EMPID NUMBER
)
AS
BEGIN
open Out_value for
SELECT EMPID,EMPNAME
FROM EMPLOYEE
WHERE EMPID = IN_EMPID;
END PRC_HB_EMP_SP1;
Stacktrace:
SEVERE: Servlet.service() for servlet [sdnext] in context with path [/sdnext] threw exception [Request processing failed; nested exception is org.hibernate.exception.GenericJDBCException: could not execute query] with root cause
java.sql.SQLException: Invalid column name
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:269)
at oracle.jdbc.driver.OracleStatement.get_column_index(OracleStatement.java:5971)
at oracle.jdbc.driver.OracleResultSetImpl.findColumn(OracleResultSetImpl.java:1527)
at oracle.jdbc.driver.OracleResultSet.getString(OracleResultSet.java:1482)
at org.hibernate.type.StringType.get(StringType.java:18)
at org.hibernate.type.NullableType.nullSafeGet(NullableType.java:163)
at org.hibernate.type.NullableType.nullSafeGet(NullableType.java:154)
at org.hibernate.type.AbstractType.hydrate(AbstractType.java:81)
at org.hibernate.persister.entity.AbstractEntityPersister.hydrate(AbstractEntityPersister.java:2101)
at org.hibernate.loader.Loader.loadFromResultSet(Loader.java:1380)
at org.hibernate.loader.Loader.instanceNotYetLoaded(Loader.java:1308)
at org.hibernate.loader.Loader.getRow(Loader.java:1206)
at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:580)
at org.hibernate.loader.Loader.doQuery(Loader.java:701)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
at org.hibernate.loader.Loader.doList(Loader.java:2213)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
at org.hibernate.loader.Loader.list(Loader.java:2099)
at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:289)
at org.hibernate.impl.SessionImpl.listCustomQuery(SessionImpl.java:1695)
at org.hibernate.impl.AbstractSessionImpl.list(AbstractSessionImpl.java:142)
at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:152)
at com.dineshonjava.controller.EmployeeController.getEmployeeDetail(EmployeeController.java:160)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Your mappings contain columns ADDRESS,SALARY and EMPAGE but those are missing from your SP.You need to include those in your statement.
In my webapp I have some categories. The category can be nested in another category. So my class structure is:
#javax.persistence.Entity
#Table(name = "Category")
#XmlRootElement
public class CategoryEntity implements Serializable {
private static final long serialVersionUID = 3738106090716428022L;
#Id
#GeneratedValue
private Long id;
private String name;
#OneToOne(cascade = CascadeType.ALL)
#JoinColumn(name = "parent_id", nullable = true)
#Null
private CategoryEntity parent;
public CategoryEntity(String name) {
super();
this.name = name;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public CategoryEntity() {
super();
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public CategoryEntity getParent() {
return parent;
}
public void setParent(CategoryEntity parent) {
if (parent.equals(this))
this.parent = null;
else
this.parent = parent;
}
}
Solution above I found in web.
As you see, in database table I need refer to another object same type.
My sql table (I think it is correct in my case):
create table category (
id bigint not null,
name varchar(50),
parent_id bigint null default null,
constraint category_pk primary key (id),
constraint fk_parent foreign key (parent_id) references category (id)
);
In this case I always get NullPointerException:
SEVERE: Servlet.service() for servlet [Spring MVC Dispatcher Servlet] in context with path [/Shop] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause
java.lang.NullPointerException
at org.tenebris.fx.service.rest.CategoryResource.createCategory(CategoryResource.java:39)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:644)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:186)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:613)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1085)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1556)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1513)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
How fix it?
Try this :
#ManyToOne(fetch=FetchType.EAGER)
#JoinColumn(name="parent_category_id")