Hi All,
I am facing a peculiar problem while saving the data. Below is the detailed
explanation what I am doing. I always get the problem as "a different object
with the same identifier value was already associated with the session"
But the above error does not come when I try to save the same object from java.
Below is the Parent Class in java
[code]
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
/**
* Employee entity. @author MyEclipse Persistence Tools
*/
public class Employee implements java.io.Serializable {
private Integer employeeId;
private String name;
private List communicationTypes = new ArrayList();
// getters and setters follows
[/code]
Below is the Parent class in Flex
[code]
package manageCustomList.employee
{
import mx.collections.ArrayCollection;
[Bindable]
[RemoteClass(alias="com.config.Employee")]
public class Employee
{
public function Employee()
{
}
public var employeeId:int;
public var name:String;
public var communicationTypes:Array;
}
}
[/code]
Below is the Child Class in java
[code]
public class CommunicationType extends Employee implements java.io.Serializable
{
private Integer comTypeId;
private Integer typeId;
private String typeName;
// getters and setters follows
}
[/code]
Below is the child Class in Flex
[code]
package manageCustomList.employee
{
import mx.controls.List;
[Bindable]
[RemoteClass(alias="com.config.CommunicationType")]
public class CommunicationType extends Employee
{
public function CommunicationType()
{
}
public var comTypeId:int;
public var typeId:int;
public var typeName:String;
}
}
[/code]
Below is the method to save the object in the database
[code]
public static Employee create(Employee employee) throws DAOException
{
Session session = HibernateSessionFactory.getSession();
try
{
session.beginTransaction();
session.save(employee);
session.getTransaction().commit();
session.flush();
session.evict(employee);
}
catch (HibernateException exp) {
exp.printStackTrace();
} finally {
session.close();
}
return employee;
}
[/code]
Below is my mxml
[code]
private function save():void {
employee = new Employee();
employee.listId = Number(listId.text);
employee.name = empName.text;
var childList:Array = new Array();
for(var i:int=0;i<checkList.selectedIndices.length;i++){
comType = new CommunicationType();
comType.typeId = checkList.selectedIndices[i];
comType.typeName =
checkList.dataProvider[checkList.selectedIndices[i]].label;
childList.push(comType);
}
employee.communicationTypes = childList;
emp.create(employee);
}
[/code]
when I do the above i get the error as "a different object with the same
identifier value was already associated with the session"
But when I try to save the employee from java as below. It gets saved without
any problem.
[code]
public static void main(String[] args) {
Employee emp = new Employee();
emp.setName("fresh from java only 2");
CommunicationType comType = new CommunicationType();
comType.setTypeId(1);
comType.setTypeName("typeName");
List comSet = new ArrayList();
comSet.add(comType);
emp.setCommunicationTypes(comSet);
create(emp);
}[/code]
below are my hbm files
Employee.hbm.xml
[code]
<hibernate-mapping>
<class name="com.config.Employee" table="EMPLOYEE" schema="DISLIST">
<id name="employeeId" type="java.lang.Integer" unsaved-value="-1">
<column name="EMPLOYEE_ID" />
<generator class="identity" />
</id>
<property name="listId" type="java.lang.Integer">
<column name="LIST_ID" length="4" />
</property>
<property name="name" type="java.lang.String">
<column name="EMP_NAME" length="50" not-null="true" />
</property>
<bag name="communicationTypes" cascade="all" lazy="false">
<key column="EMPLOYEE_ID"/>
<one-to-many class="com.ibm.dlm.config.CommunicationType"/>
</bag>
</class>
</hibernate-mapping>
[/code]
CommunicationType.hbm.xml
[code]
<hibernate-mapping>
<class name="com.config.CommunicationType" table="COMMUNICATION_TYPE"
schema="DISLIST">
<id name="comTypeId" type="java.lang.Integer" unsaved-value="-1" >
<column name="COM_TYPE_ID" />
<generator class="identity" />
</id>
<property name="typeId" type="java.lang.Integer">
<column name="TYPE_ID" not-null="true" />
</property>
<property name="typeName" type="java.lang.String">
<column name="TYPE_NAME" length="40" not-null="true" />
</property>
</class>
</hibernate-mapping>
[/code]
Let me know if you any refernce of other things.
Any help would be really helpful
Thanks in advance
