Hi, i`ve posted scattered pieces of the problem i`m having.
As i didn`t get solving answers and i didn`t post all the code, I`m trying this time (with all the code). Also i`m a little desperate (i`ve been trying to make this work for days...)
Here's is part of my session bean wich access the classes.
Code:
System.out.println("All employess of org 10...");
List emps = session.find("from Employee as e where e.org = 10");Iterator iter = emps.iterator();
while (iter.hasNext()){
Employee empOrg10 = (Employee)iter.next();
System.out.println("Employee is: " + empOrg10.getLastName());
}
// !!!! My code works fine till here
Organization organization1 = (Organization)session.load(Organization.class, new Integer(11));
// !!!! At this point, the attributes orgName, orgAddress and orgId have been loaded,
// !!!! but employees have not (even when i'm not using lazy load )!!!!
Set org10Employees = organization1.getEmployees();
Iterator it = org10Employees.iterator();
// !!!! Here i get a NullPointer Exception, as i try to iterate on something null !!!!
while (it.hasNext()){
Employee empOrg10 = (Employee)it.next();
System.out.println("Employee is: " + empOrg10.getLastName());
}
Also, here are my classes...
Organization
Code:
/**
* @author Leandro
*
* @hibernate.class
* table="Organization"
*
*/
public class Organization {
private Integer orgId;
private String orgName;
private String orgAddress;
private Set employees;
public Organization(){ }
public Organization(Integer id, String name, String add){ this.orgId = id;
this.orgName = name;
this.orgAddress = add;
}
// i also tried inserting table="Employee" under
//@hibenate.set tag
/**
*
* @hibernate.set
* lazy="false"
* inverse="true"
*
* @hibernate.collection-key
* column="fk_orgId"
* @hibernate.collection-one-to-many
* class="hibernate.Employee"
*
* @return all the employees
*
*/
public Set getEmployees() {
return employees;
}
/**
*
* @hibernate.property
* column="orgAddress"
*
* @return
*
*/
public String getOrgAddress() {
return orgAddress;
}
/**
*
* @hibernate.id
* generator-class="native"
* column="orgId"
*
* @return
*/
public Integer getOrgId() {
return orgId;
}
/**
*
* @hibernate.property
* column="orgName"
*
* @return
*/
public String getOrgName() {
return orgName;
}
/**
* @param set
*/
public void setEmployees(Set emps) {
employees = emps;
}
/**
* @param string
*/
public void setOrgAddress(String string) {
orgAddress = string;
}
/**
* @param integer
*/
public void setOrgId(Integer integer) {
orgId = integer;
}
/**
* @param string
*/
public void setOrgName(String string) {
orgName = string;
}
}
Employee
Code:
public class Employee {
private Integer empId;
private String firstName;
private String lastName;
private Organization org;
public Employee(){ }
public Employee(Integer id, String fn, String ln, Organization fk){
this.empId = id;
this.firstName = fn;
this.lastName = ln;
this.org = fk;
}
/**
*
* @hibernate.id
* generator-class="native"
* column="empId"
*
* @return the id
*
*/
public Integer getEmpId() {
return empId;
}
/**
*
* @hibernate.property
* column="firstName"
*
* @return
*
*/
public String getFirstName() {
return firstName;
}
/**
*
* @hibernate.many-to-one
* column="fk_orgId"
*
* @return the organization of the employee
*
*/
public Organization getOrg() {
return org;
}
/**
*
* @hibernate.property
* column="lastName"
*
* @return
*
*/
public String getLastName() {
return lastName;
}
/**
* @param integer
*/
public void setEmpId(Integer integer) {
empId = integer;
}
/**
* @param string
*/
public void setFirstName(String string) {
firstName = string;
}
/**
* @param organization
*/
public void setOrg(Organization fk_orgId) {
this.org = fk_orgId;
}
/**
* @param string
*/
public void setLastName(String string) {
lastName = string;
}
}
My mapping files have already been posted, but as i have made some minor modifications, I'll post them again, ok.
Organization.hbm.xml
Code:
<hibernate-mapping>
<class
name="hibernate.Organization"
table="Organization"
dynamic-update="false"
dynamic-insert="false" >
<id
name="orgId"
column="orgId"
type="java.lang.Integer" >
<generator class="native">
</generator>
</id>
<set
name="employees"
table="Employee"
lazy="false"
inverse="true"
cascade="none"
sort="unsorted" >
<key
column="fk_orgId" />
<one-to-many
class="hibernate.Employee" />
</set>
<property name="orgAddress"
type="java.lang.String" update="true"
insert="true" column="orgAddress" />
<property name="orgName"
type="java.lang.String" update="true"
insert="true" column="orgName" />
</class>
</hibernate-mapping>
Employee.hbm.xml
Code:
<hibernate-mapping>
<class
name="hibernate.Employee"
table="Employee"
dynamic-update="false"
dynamic-insert="false" >
<id
name="empId"
column="empId"
type="java.lang.Integer" >
<generator class="native">
</generator>
</id>
<property
name="firstName"
type="java.lang.String"
update="true"
insert="true"
column="firstName" />
<many-to-one
name="org"
class="hibernate.Organization"
cascade="none"
outer-join="auto"
update="true"
insert="true"
column="fk_orgId" />
<property
name="lastName"
type="java.lang.String"
update="true"
insert="true"
column="lastName" />
</class>
</hibernate-mapping>
Here's the exception.
11:30:03,468 ERROR [LogInterceptor] RuntimeException:
java.lang.NullPointerException
at session.TestBean.executaTudo1(TestBean.java:197)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:683)
at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:185)
at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:72)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:84)
at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:267)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:128)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:118)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:191)
at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122)
at org.jboss.ejb.StatelessSessionContainer.internalInvoke(StatelessSessionContainer.java:331)
at org.jboss.ejb.Container.invoke(Container.java:700)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:367)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261)
at sun.rmi.transport.Transport$1.run(Transport.java:148)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
at java.lang.Thread.run(Thread.java:534)
Thank you so much,
ltcmelo
Login
FAQ
Search
