No default constructor for entity
hello all,
i am trying to get acquainted with EJB3.. i developed a simple SLSB which acts as a facade to my entity ejb
my entity ejb is as follows:
@Entity
@Table (name="jobApplication")
public class JobApplication
implements java.io.Serializable {
private String jobName;
private String jobStatus;
private String jobAgency;
private String jobApplicationDate;
private String jobSalary =;
private String jobLocation =;
private int id;
public JobApplication() {}
public JobApplication(String jobName, String jobStatus,
String jobAgency, String jobApplicationDate,
String jobSalary, String jobLocation) {
this.jobName = jobName;
this.jobStatus = jobStatus;
this.jobAgency = jobAgency;
this.jobApplicationDate = jobApplicationDate;
this.jobSalary = jobSalary;
this.jobLocation = jobLocation;
}
@Id(generate = GeneratorType.AUTO)
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
/**
* @return the job name
*/
public String getJobName() {
return jobName;
}
/**
* @return the status of the job
*/
public String getJobStatus() {
return jobStatus;
}
/**
* @return the job agency
*/
public String getJobAgency() {
return jobAgency;
}
/**
* @return the job name
*/
public String getJobApplicationDate() {
return jobApplicationDate;
}
/**
* @return the job salary
*/
public String getJobSalary() {
return jobSalary;
}
/**
* @return the job location
*/
public String getJobLocation() {
return jobLocation;
}
/**
* set the job name
*/
public void setJobName(String name) {
this.jobName = name;
}
/**
* set the job agency
*/
public void setJobAgency(String agency){
this.jobAgency = agency;
}
/**
* set the job applicationDate
*/
public void setJobApplicationDate(String date) {
this.jobApplicationDate = date;
}
/**
* set the job salary
*/
public void setJobSalary(String salary) {
this.jobSalary = salary;
}
/**
* set the job location
*/
public void setJobLocation(String location) {
this.jobLocation = location;
}
/**
* Set the job status
*/
public void setJobStatus(String status) {
this.jobStatus = status;
}
}
my session is as follows:
@Stateless
@Remote ( {Calculator.class})
public class CalculatorBean implements Calculator,java.io.Serializable{
@PersistenceContext EntityManager em;
public double calculate(int start, int end, double growthrate, double saving) {
double tmp = Math.pow(1. + growthrate / 12.,
12. * (end - start) + 1);
return saving * 12. * (tmp - 1) / growthrate;
}
// @PostConstruct
@TransactionAttribute(TransactionAttributeType.REQUIRED)
public void addJobApplication(String name,String status,
String agency, String appDate,
String salary, String location) {
System.err.println("..CalculatorBean.persisting JobApplication..");
JobApplication job = new JobApplication(name, status, agency,
appDate, salary, location);
em.persist(job);
}
public Collection getJobApplications() {
return em.createQuery("from JobApplication ja").getResultList();
}
}
it looks like em is not persisting anything...
actually, when i try to use a query to find what i have just inserted, i got back following excepiton
Exception in looking up calculator..
2005-12-13 19:58:33,093 INFO [STDOUT] javax.ejb.EJBException: null; CausedByException is:
No default constructor for entity: com.myapp.ejb3.agencies.JobApplication
2005-12-13 19:58:33,109 INFO [STDOUT] at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:46)
2005-12-13 19:58:33,109 INFO [STDOUT] at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:70)
2005-12-13 19:58:33,109 INFO [STDOUT] at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:134)
2005-12-13 19:58:33,109 INFO [STDOUT] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
2005-12-13 19:58:33,109 INFO [STDOUT] at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:61)
2005-12-13 19:58:33,109 INFO [STDOUT] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
2005-12-13 19:58:33,109 INFO [STDOUT] at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:39)
2005-12-13 19:58:33,109 INFO [STDOUT] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
2005-12-13 19:58:33,109 INFO [STDOUT]
anyone can help me out?
thanks and regards
marco
