datamodel.java

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/*
 * Copyright (c) 2003 Sun Microsystems, Inc.  All rights reserved.  U.S. 
 * Government Rights - Commercial software.  Government users are subject 
 * to the Sun Microsystems, Inc. standard license agreement and 
 * applicable provisions of the FAR and its supplements.  Use is subject 
 * to license terms.  
 * 
 * This distribution may include materials developed by third parties. 
 * Sun, Sun Microsystems, the Sun logo, Java and J2EE are trademarks 
 * or registered trademarks of Sun Microsystems, Inc. in the U.S. and 
 * other countries.  
 * 
 * Copyright (c) 2003 Sun Microsystems, Inc. Tous droits reserves.
 * 
 * Droits du gouvernement americain, utilisateurs gouvernementaux - logiciel
 * commercial. Les utilisateurs gouvernementaux sont soumis au contrat de 
 * licence standard de Sun Microsystems, Inc., ainsi qu'aux dispositions 
 * en vigueur de la FAR (Federal Acquisition Regulations) et des 
 * supplements a celles-ci.  Distribue par des licences qui en 
 * restreignent l'utilisation.
 * 
 * Cette distribution peut comprendre des composants developpes par des 
 * tierces parties. Sun, Sun Microsystems, le logo Sun, Java et J2EE 
 * sont des marques de fabrique ou des marques deposees de Sun 
 * Microsystems, Inc. aux Etats-Unis et dans d'autres pays.
 */
package com.sun.ebank.appclient;

import java.util.ResourceBundle;
import java.util.Date;
import java.util.ArrayList;
import java.math.BigDecimal;
import com.sun.ebank.util.EJBGetter;
import javax.naming.InitialContext;
import javax.swing.JTextField;
import javax.swing.JOptionPane;
import java.rmi.RemoteException;
import com.sun.ebank.ejb.customer.CustomerController;
import com.sun.ebank.ejb.customer.CustomerControllerHome;
import com.sun.ebank.ejb.exception.CustomerNotFoundException;
import com.sun.ebank.ejb.account.AccountController;
import com.sun.ebank.ejb.account.AccountControllerHome;
import com.sun.ebank.ejb.exception.AccountNotFoundException;
import com.sun.ebank.ejb.exception.IllegalAccountTypeException;
import com.sun.ebank.ejb.exception.CustomerInAccountException;
import com.sun.ebank.ejb.exception.InvalidParameterException;
import com.sun.ebank.util.CustomerDetails;
import com.sun.ebank.util.AccountDetails;

public class DataModel {
//Private instance variables
  private BankAdmin frame;
  private ResourceBundle messages;
  private int currentFunction; 
  private String returned;
  private Date timestamp;
//Private EJB variables
  private static CustomerController customer;
  private static AccountController account;
//Protected instance variables
  protected String first, last, mid, str, cty, st, zp, 
      tel, mail, descrip, credit, type, bal, begbal, 
      custID, actID;
  protected BigDecimal balance, creditline, beginbalance;
  protected BigDecimal bigzero = new BigDecimal("0.00");
  protected boolean checkbal, checkbegbal;

//Constructor 
  public DataModel(BankAdmin frame, ResourceBundle messages) {
   this.frame = frame;
   this.messages = messages;

//Look up and create CustomerController bean
    try {
      CustomerControllerHome customerControllerHome = 
      EJBGetter.getCustomerControllerHome();
      customer = customerControllerHome.create();
    } catch (Exception NamingException) {
      NamingException.printStackTrace();
    }

//Look up and create AccountController bean
    try {
      AccountControllerHome accountControllerHome = 
      EJBGetter.getAccountControllerHome();
      account = accountControllerHome.create();
    } catch (Exception NamingException) {
      NamingException.printStackTrace();
    }
  }

  private String getData(JTextField component) {
    String text, trimmed;
    if(component.getText().length() > 0) {
      text = component.getText();
      trimmed = text.trim();
      return trimmed;
    } else {
      text = null;
      return text;
    }
  }

  protected int checkActData(String returned, int currentFunction) {
    this.currentFunction = currentFunction;
    this.returned = returned;

    if(currentFunction == 6) { //remove account
      this.actID = getData(frame.account);
      this.custID = getData(frame.customer);
      frame.clearMessages(1);
      if((this.custID != null) && (this.actID != null)) {
        int success = writeData();
        return success;
      } else {
        frame.messlab5.setText(messages.getString("MissingRequiredException"));
        return 1;
      }
    } else { // create account
//Retrieve data from UI
      this.descrip = getData(frame.descrip);
      this.bal = getData(frame.bal);
      this.credit = getData(frame.credit);
      this.begbal = getData(frame.begbal);
      this.custID = getData(frame.cust);

      //Get type
      if(frame.savingsact.isSelected()) {
        this.type="Savings";
      } else if(frame.checkingact.isSelected()) {
        this.type="Checking";
      } else if(frame.creditact.isSelected()) {
        this.type="Credit";
      } else if(frame.mnymktact.isSelected()) {
        this.type="Money Market";
      } else {
        this.type=null;
      } 

      frame.clearMessages(1);

      if(this.begbal != null) {
        checkbegbal = begbal.equals("0");
      }
 
      //See if user pressed Return after entering
      //beginning balance
      if(this.bal != null) {
        checkbal = bal.equals("0");
      }

      if(checkbal == true) {
        String begbalstring = frame.begbal.getText();
        //Assign beginning balance to balance
        this.bal = begbalstring;
      }

      //Convert balance, begin balance, and credit line
      //String values to BigDecimal types for
      //writing to the database
      balance = new BigDecimal(bal);
      creditline = new BigDecimal(credit);
      beginbalance = new BigDecimal(begbal);

      if((this.custID != null) && (this.begbal != null)
        && (this.type != null) && (checkbegbal == false)) {
        int success = writeData();
        return success;
      } else {
        frame.messlab5.setText(messages.getString("MissingRequiredException"));
        return 1;
      }
    }
  }

  protected int checkCustData(String returned, int currentFunction) {
    this.currentFunction = currentFunction;
    this.returned=returned;
    int i, j, k;

    this.last = getData(frame.lname);
    this.first = getData(frame.fname);
    this.mid = getData(frame.mi);
    this.str = getData(frame.street);
    this.cty = getData(frame.city);
    this.st = getData(frame.state);
    this.zp = getData(frame.zip);
    this.tel = getData(frame.phone);
    this.mail = getData(frame.e);

    frame.clearMessages(1);

    if((last != null) && (first != null) && (str != null)
                      && (cty != null) && (st != null)) {
      i = 0;
    } else {
      frame.messlab5.setText(messages.getString("MissingRequiredException"));
      i = 1;
    }
    if(frame.mi.getText().length() > 1) {
      frame.messlab4.setText(messages.getString("MILimitException"));
      j = 1;
    } else {
      j = 0;
    }
    if(frame.state.getText().length() > 2) {
      frame.messlab3.setText(messages.getString("StateLimitException"));
      k = 1;
    } else {
      k = 0;
    }
    if((i == 0) && (j == 0) && (k == 0)) {
      int success = writeData();
      return success; 
    } else {