I've been reading the threads:
http://www.mail-archive.com/[email protected]/msg03894.html and
http://www.mail-archive.com/[email protected]/msg02858.html trying to
find a solution to the my cache problem. I am still having troubles.
Here's my
problem. I have an Employee object that holds a collection of Tasks. The
Task object holds a reference back to the Employee. The mapping holds for
both the Java classes and database/mapping. When I start my application,
the relationships are loaded fine. But, when I create a new Task and
re-display the Employee, the task list is not updated with the new task. The
classes and the mapping actually duplicate the JDO example where the Product
holds a collection of ProductDetail and the ProductDetail holds a reference
back to the Product. Here's my code and mapping.
package sample.app.businessmodel;
import java.util.Vector;
import org.exolab.castor.jdo.TimeStampable;
/**
* Employee
*/
public class Employee extends Person implements TimeStampable {
private Position position;
private Vector tasks = new Vector();
private long timeStamp;
/**
* Employee constructor
*/
public Employee() {}
/**
* @return Position
*/
public Position getPosition() {
return position;
}
/**
* @return java.util.Vector
*/
public Vector getTasks() {
return tasks;
}
/**
* @param Position newPosition
*/
public void setPosition(Position newPosition) {
position = newPosition;
}
/**
* @param newTasks java.util.Vector
*/
public void setTasks(Vector newTasks) {
tasks = newTasks;
}
/**
* @return long
*/
public long jdoGetTimeStamp() { return timeStamp; }
/**
* @param long timeStamp
*/
public void jdoSetTimeStamp(long timeStamp) {
this.timeStamp = timeStamp;
}
/**
* @return String
*/
public String toString() {
return "Employee: [" + super.toString() + "," + position + "," + tasks +
"]";
}
}
package sample.app.businessmodel;
import org.exolab.castor.jdo.TimeStampable;
/**
* Task
*/
public class Task implements TimeStampable {
private String name = "";
private Employee employee = null;
private Integer id = null;
private long timeStamp;
/**
* Task constructor
*/
public Task() {}
public Integer getId() { return id; }
public void setId(Integer id) { this.id = id; }
/**
* @return Employee
*/
public Employee getEmployee() {
return employee;
}
/**
* @param Employee
*/
public void setEmployee(Employee newEmployee) {
employee = newEmployee;
}
/**
* @return java.lang.String
*/
public String getName() {
return name;
}
/**
* @param newName java.lang.String
*/
public void setName(String newName) {
name = newName;
}
/**
* @return long
*/
public long jdoGetTimeStamp() { return timeStamp; }
/**
* @param long timeStamp
*/
public void jdoSetTimeStamp(long timeStamp) {
this.timeStamp = timeStamp;
}
/**
* @return String
*/
public String toString() {
return "Task: [" + id + "," + name + "," + employee.getId() + "]";
}
}
<!-- MXpping for Employee -->
<class name="sample.Xpp.businessmodel.Employee"
extends="sample.Xpp.businessmodel.Person" identity="id"
key-generator="HIGH/LOW">
<deXcription>Employee</deXcription>
<map-to table="employee" />
<field name="position" type="sample.Xpp.businessmodel.Position">
<sql name="position_id" />
</field>
<field name="tasks" type="sample.Xpp.businessmodel.Task"
collection="vector">
<sql many-key="employee_id" />
</field>
</class>
<!-- MXpping for Task -->
<class name="sample.Xpp.businessmodel.Task" identity="id"
key-generator="HIGH/LOW">
<deXcription>Employee Task</deXcription>
<map-to table="task" />
<field name="id" type="integer">
<sql name="id" type="integer"/>
</field>
<field name="name" type="string">
<sql name="name" type="varchar"/>
</field>
<field name="employee" type="sample.Xpp.businessmodel.Employee">
<sql name="employee_id" />
</field>
</class>
Any ideas/help would be greatly appreciated.
Thanks,
Chris
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