Просмотр списка не refre sh in Oracle MAF

Question

Я новичок в Oracle MAF.

Я создал код для CRUD, используя следующий код.

Вот мой POJO.

import oracle.adfmf.java.beans.PropertyChangeListener;
import oracle.adfmf.java.beans.PropertyChangeSupport;

public class Employee implements Cloneable {
    private Integer employeeId;
    private String firstName;
    private String lastName;
    private String email;
    private PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(this);

    public Employee() {
        super();
    }


    public void setEmployeeId(Integer employeeId) {
        Integer oldEmployeeId = this.employeeId;
        this.employeeId = employeeId;
        propertyChangeSupport.firePropertyChange("employeeId", oldEmployeeId, employeeId);
    }

    public Integer getEmployeeId() {
        return employeeId;
    }

    public void setFirstName(String firstName) {
        String oldFirstName = this.firstName;
        this.firstName = firstName;
        propertyChangeSupport.firePropertyChange("firstName", oldFirstName, firstName);
    }

    public String getFirstName() {
        return firstName;
    }

    public void setLastName(String lastName) {
        String oldLastName = this.lastName;
        this.lastName = lastName;
        propertyChangeSupport.firePropertyChange("lastName", oldLastName, lastName);
    }

    public String getLastName() {
        return lastName;
    }

    public void setEmail(String email) {
        String oldEmail = this.email;
        this.email = email;
        propertyChangeSupport.firePropertyChange("email", oldEmail, email);
    }

    public String getEmail() {
        return email;
    }

    protected Object clone() throws CloneNotSupportedException {
        return super.clone();
    }

    public void addPropertyChangeListener(PropertyChangeListener l) {
        propertyChangeSupport.addPropertyChangeListener(l);
    }

    public void removePropertyChangeListener(PropertyChangeListener l) {
        propertyChangeSupport.removePropertyChangeListener(l);
    }
}

Вот мой класс БД, который я использую для привязки.

EmployeeD C - это класс управления данными.

Когда я пытался выполнить CRUD, просмотр списка операций не refre sh, как ожидалось .

Я не хочу ничего писать в классе POJO.

Все методы должны вызываться из EmployeeD C

import java.sql.ResultSet;

import java.util.ArrayList;
import java.util.List;

import oracle.adfmf.java.beans.ProviderChangeListener;
import oracle.adfmf.java.beans.ProviderChangeSupport;
import oracle.adfmf.util.Utility;

public class EmployeeDC {
    private Employee employee;
    private List employees = new ArrayList();
    private DBAdapter dBAdapter = new DBAdapter();
    private int currentId=0;

    protected transient ProviderChangeSupport providerChangeSupport = new ProviderChangeSupport(this);

    public void addProviderChangeListener(ProviderChangeListener l) {
        providerChangeSupport.addProviderChangeListener(l);
    }

    public void removeProviderChangeListener(ProviderChangeListener l) {
        providerChangeSupport.removeProviderChangeListener(l);
    }

    public EmployeeDC() {
        super();
        findAll();
    }

    public void setEmployee(Employee employee) {
        this.employee = employee;
    }

    public Employee getEmployee() {
        return employee;
    }

    public Employee[] getEmployees() {

        return (Employee[]) employees.toArray(new Employee[employees.size()]);
    }

    public void findAll() {
        try {
            ResultSet result =
                dBAdapter.executeQuery("SELECT EMPLOYEE_ID, FIRST_NAME, LAST_NAME, EMAIL FROM EMPLOYEES;");

            while (result.next()) {
                Employee employee = new Employee();
                employee.setEmployeeId(new Integer(result.getInt("EMPLOYEE_ID")));
                employee.setFirstName(result.getString("FIRST_NAME"));
                employee.setLastName(result.getString("LAST_NAME"));
                employee.setEmail(result.getString("EMAIL"));
                employees.add(employee);
                Utility.ApplicationLogger.severe("Employee: " + employee.getEmployeeId() + "," +
                                                 employee.getFirstName() + "," + employee.getLastName() + "," +
                                                 employee.getEmail());
            }
       System.out.println("employees=============>"+employees.size());
        } catch (Exception ex) {
            Utility.ApplicationLogger.severe(ex.getMessage());
            ex.printStackTrace();
            throw new RuntimeException(ex);
        }

    }

    public void delete(Integer employeeId) {
        boolean success = dBAdapter.executeUpdate("DELETE FROM EMPLOYEES WHERE EMPLOYEE_ID=" + employeeId);
        if (success)
            providerChangeSupport.fireProviderDelete("employees",employeeId);
    }

    public void insert(Employee employee) {
        System.out.println("employee.getEmployeeId()   : "+employee.getEmployeeId());
        boolean success = false;
        try {
             Utility.ApplicationLogger.severe("employee.getEmployeeId(): " + employee.getEmployeeId());
                success =
                    dBAdapter.executeUpdate("INSERT INTO EMPLOYEES (EMPLOYEE_ID, FIRST_NAME, LAST_NAME, EMAIL) VALUES (" +
                                            employee.getEmployeeId() + ",'" + employee.getFirstName() + "','" +
                                            employee.getLastName() + "','" + employee.getEmail() + "')");
            if(success){
                providerChangeSupport.
                             fireProviderCreate("employees", employee.getEmployeeId(), employee);
            }
        } catch (Exception ex) {
            Utility.ApplicationLogger.severe(ex.getMessage());
            ex.printStackTrace();
            throw new RuntimeException(ex);
        }

        providerChangeSupport.
                     fireProviderCreate("employees", employee.getEmployeeId(), employee);
        //    if (success) {
        //      employees.add(employee);
        //    }
    }

    public void update(Employee employee) {
        boolean success =
            dBAdapter.executeUpdate("UPDATE EMPLOYEES SET FIRST_NAME='" + employee.getFirstName() + "', LAST_NAME='" +
                                    employee.getLastName() + "', EMAIL='" + employee.getEmail() +
                                    "' WHERE EMPLOYEE_ID=" + employee.getEmployeeId());
        if (success) {
            providerChangeSupport.fireProviderChange("employees", employee.getEmployeeId(), employee);
        }

    }
    public int getNextEmployeeId(){

        try{
            ResultSet result = dBAdapter.executeQuery("SELECT Max(EMPLOYEE_ID) as currentId FROM EMPLOYEES;");
            while (result.next()) {
                currentId = new Integer(result.getInt("currentId"))+1;
                System.out.println("currentId  :"+currentId);
            }
        } catch (Exception ex) {
            Utility.ApplicationLogger.severe(ex.getMessage());
            ex.printStackTrace();
            throw new RuntimeException(ex);
        }
        return currentId;

    }
    public void prepareEmployeeToAdd() {
        employee = new Employee();
        employee.setEmployeeId(getNextEmployeeId());
        System.out.println("prepareEmployeeToAdd=====>"+employee.getEmployeeId());
    }

    public void prepareEmployeeToEdit(Employee employee) throws CloneNotSupportedException {
        System.out.println(employee.getEmployeeId() + ":" + employee.getFirstName() + ":" + employee.getLastName() +
                           ":" + employee.getEmail());
        this.employee = (Employee) employee.clone();
    }
}