assignmentusebean.java

J2EE & Tomcat books published by hope

/*
 */

package com.sun.j2ee.workflow.control.web;

import java.util.Collection;

import com.sun.j2ee.workflow.util.JNDINames;
import com.sun.j2ee.workflow.assignment.model.AssignmentModel;
import com.sun.j2ee.workflow.assignment.dao.AssignmentDAOImpl;
import com.sun.j2ee.workflow.assignment.exceptions.*;
import com.sun.j2ee.workflow.control.exceptions.GeneralFailureException;
import com.sun.j2ee.workflow.control.exceptions.WorkflowAppException;

import com.sun.j2ee.workflow.util.Debug;

/** This class is the web-tier representation of the assignment.
 * @author Jian (James) Cai
 */
public class AssignmentUseBean implements java.io.Serializable {

    private AssignmentModel assignment = null;
    private boolean cached = false;
    public AssignmentUseBean() {}
    
    public AssignmentModel getAssignment(String assignment_ID) {
      if (cached==false)
       {
          try {
           AssignmentDAOImpl assignmentDa = new AssignmentDAOImpl();
           String assignment_id = assignmentDa.findByPrimaryKey(assignment_ID);
           Debug.println("found assignment id: "+assignment_id);
           assignment = assignmentDa.load(assignment_id);
           //account = cust.getDetails();
            } catch (AssignmentDAOFinderException fe) {
                throw new GeneralFailureException("Unable to find the password details for assignment " );
            } catch (AssignmentDAOSysException se) {
            Debug.println("found AssignmentDAOSysException se" + se.toString());
            }
            return assignment;
        }   
        else
        {
            assignment = loadFromCache(assignment_ID);
            return assignment;
        }
}


    public Collection getAssignmentList() {
        Collection assignments = null;  
        try {
           AssignmentDAOImpl assignmentDa = new AssignmentDAOImpl();
           assignments = assignmentDa.findAll();
            } catch (AssignmentDAOFinderException fe) {
                throw new GeneralFailureException("Unable to find all assignment by name ");
            } catch (AssignmentDAOSysException se) {
            Debug.println("found AssignmentDAOSysException se" + se.toString());
            }
            return assignments;
        } 



  public Collection getAssignmentByField(String field, String key) {
        Collection assignments = null;  
        try {
           AssignmentDAOImpl assignmentDa = new AssignmentDAOImpl();
           assignments = assignmentDa.findByField(field, key);
            } catch (AssignmentDAOFinderException fe) {
                throw new GeneralFailureException("Unable to find all assignment by name ");
            } catch (AssignmentDAOSysException se) {
            Debug.println("found AssignmentDAOSysException se" + se.toString());
            }
            return assignments;
        }         
    
    private AssignmentModel loadFromCache(String assignment_ID)
    {
        AssignmentModel assignment = null; //need to be implemented
        return assignment;
    }
}