/* */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;    }}