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This commit is contained in:
Jose Caban
368
CS1322/p3/Manager.java
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368
CS1322/p3/Manager.java
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/**
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* <PRE>
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* Manager.java
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*
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* Revisions: 1.0 Oct. 11, 2002
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* Created the Manager class
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* 1.1 Oct. 16, 2002
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* Compiled, Commented, Finished
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* 1.2 Oct. 17, 2002
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* Corrected Last Name only being shown on to and from for mail
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* 1.3 Oct. 17, 2002
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* Corrected infinite loop if letter entered in CcustomerHere()
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* 2.0 Oct. 17, 2002
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* Added some comments to make what I did clearer as well
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* as made certain aspects of the code "better"
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* 2.1 Oct. 18, 2002
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* Fixed a Comment in readText()
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*
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* </PRE>
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*
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* Collaboration Statement:
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* I worked on the homework assignment alone, using only
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* course materials.
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*
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* Created with JCreatorLE, some indents are off when viewed through notepad
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* or EMACS
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*
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* @author <A HREF="mailto:gtg184g@mail.gatech.edu">Jose Manuel Caban</A>
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* @version Version 2.1, Oct. 18, 2002
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*/
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import java.io.*;
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import java.util.*;
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public class Manager implements P3Type{
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public static final boolean bDebug = false;
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//declaration of globals
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private String strCustFName ;
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private String strCustLName ;
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private PostOffice objPostOffice = new PostOffice();
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private BufferedReader KB_IN;
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////////////////
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//Constructors//
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////////////////
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/*
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This constructor would have been used if readFile() wasn't run on every
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run of managerActions(). Having the constructor read the file and then
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waiting to write it after the program is done would mean any mailbox
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deleted from the PostOffice would not be removed from the file and in
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case of system failure, when the RAM is flushed the deleted mailboxes would
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never actually be deleted.
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public Manager(){
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readFile();
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}
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*/
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///////////
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//Methods//
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///////////
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/**
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*Initialize the Keyboard input
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*/
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private void initInput(){
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KB_IN = new BufferedReader(new InputStreamReader(System.in));
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}
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/**
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*Read contents of MyPO
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*/
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private void readFile(){
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FileChanger fc = new FileChanger(P3Type.POST_OFFICE);
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boolean truth = fc.initReader();
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Object temp;
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if(truth != false){
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do{
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temp = fc.nextObject();
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if(temp != null){
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objPostOffice.issue((MailBox)temp);
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}
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}while(temp != null);
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fc.closeRead();
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}
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}//end readFile()
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/**
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*Read Input
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*/
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private Object[] readText(String KB_INPUT,int KB_INPUT_PARSE){
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boolean trust = true;
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//do..while() for purposes of keeping the code running until\
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//an acceptable value is entered
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do{
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try{
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KB_INPUT = KB_IN.readLine();
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}
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catch(IOException ioe){
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System.err.println("IOException in readText()");
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}
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try{
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KB_INPUT_PARSE = Integer.parseInt(KB_INPUT);
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trust = true;
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}
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catch(NumberFormatException nfe){
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System.err.println("Please enter a number next time");
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trust = false;
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}
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}while(trust != true);
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//set-up return array
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Object[] toReturn = new Object[2];
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toReturn[0] = KB_INPUT;
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toReturn[1] = new Integer(KB_INPUT_PARSE);
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return toReturn;
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}//end readText(String,int)
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/**
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*Perform actions as the manager
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*@return false if done
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*/
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public boolean managerActions(){
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//A Note: if the readFile() function/code is run everytime
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//managerActions() is run, then the file must be rewritten everytime
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//a mailbox is deleted. This is good and bad, good for performance
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//bad in case of a crash
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//I opted for the lesser performance but better reliability
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//we don't want the mailboxes people deleted reappearing in case of
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//system failure do we?
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readFile();
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System.out.println("\n"+P3Type.INIT_ACTIONS);
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//let's keep this archane Hungarian Style Notation, shall we?
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String KB_INPUT = "";
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int KB_INPUT_PARSE = 0;
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initInput(); //I also moved this for cleanliness
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//In order to lessen the clutter of this code, I created a separate
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//function to handle the text input
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Object[] temp = readText(KB_INPUT,KB_INPUT_PARSE);
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KB_INPUT = (String)temp[0];
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Integer tucow = (Integer)temp[1];
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KB_INPUT_PARSE = tucow.intValue();
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switch(KB_INPUT_PARSE){
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case 1:
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if(bDebug == true){
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System.out.println("Case " + KB_INPUT_PARSE);
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}
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boolean trueness = true;
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do{
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System.out.println("Please enter the Customer's name");
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try{
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KB_INPUT = KB_IN.readLine();
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}
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catch(IOException ioe){
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System.err.println("IOException in managerAction()"+
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" when trying to readLine().");
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}
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trueness = customerHere(KB_INPUT);
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}while(trueness);
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break;
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//end case 1
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case 2:
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if(bDebug == true){
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System.out.println("Case " + KB_INPUT_PARSE);
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}
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System.out.print("Adding Rooms: ");
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objPostOffice.resize();
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System.out.println("Done.");
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break;
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//end case 2
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case 3:
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if(bDebug == true){
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System.out.println("Case " + KB_INPUT_PARSE);
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}
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System.out.println("The current boxes are: ");
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Enumeration e = objPostOffice.allBoxes();
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if(e != null){
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while(e.hasMoreElements()){
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System.out.println(e.nextElement());
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}
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}
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break;
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//end case 3
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case 0:
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if(bDebug == true){
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System.out.println("Case " + KB_INPUT_PARSE);
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}
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objPostOffice.leavingForTheDay();
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return false;
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//end case 0
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default:
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if(bDebug == true){
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System.out.println("Case " + KB_INPUT_PARSE);
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}
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System.out.println("You didn't input 0-3 did you?");
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return managerActions(); //restart
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//end default
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}
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return true;
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}//end managerActions()
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/**
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*Customer Actions
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*@return false when done
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*/
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public boolean customerHere(String strName){
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for(;;){
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System.out.println("\n"+P3Type.CUST_HERE);
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initInput();
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String KB_INPUT = "";
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int KB_INPUT_PARSE = 0;
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//In order to lessen the clutter of this code, I created a separate
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//function to handle the text input
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Object[] temp = readText(KB_INPUT,KB_INPUT_PARSE);
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KB_INPUT = (String)temp[0];
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Integer tucow = (Integer)temp[1];
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KB_INPUT_PARSE = tucow.intValue();
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/*get names*/
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StringTokenizer st = new StringTokenizer(strName);
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strCustFName = st.nextToken();
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while(st.hasMoreTokens()){
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strCustLName = st.nextToken();
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}
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/////////////
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switch(KB_INPUT_PARSE){
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case 1:
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if(bDebug == true){
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System.out.println("Case " + KB_INPUT_PARSE);
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}
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MailBox objNewBox = new MailBox(strCustLName,strCustFName);
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objPostOffice.issue(objNewBox);
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objPostOffice.leavingForTheDay(); //rewrites mailbox list
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break;
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//end case 1
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case 2:
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if(bDebug == true){
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System.out.println("Case " + KB_INPUT_PARSE);
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}
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int iValue = objPostOffice.remove(strCustLName);
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if(iValue == -3){
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System.out.println(P3Type.NO_MAILBOX);
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}
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else{ //if(iValue >= 0)
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System.out.println(P3Type.NUM_TELEGRAMS + iValue);
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objPostOffice.leavingForTheDay(); //rewrites mailbox list
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}
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break;
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//end case 2
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case 3:
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if(bDebug == true){
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System.out.println("Case " + KB_INPUT_PARSE);
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}
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String LName = "";
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String FName = "";
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String message ="";
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int iVal;
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System.out.println("Who do you want to send the message to?");
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try{
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KB_INPUT = KB_IN.readLine();
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}
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catch(IOException ioe){
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System.err.println("IOException READLine() in case3"+
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"@ customerHere()");
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}
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st = new StringTokenizer(KB_INPUT);
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FName = st.nextToken();
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while(st.hasMoreTokens()){
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LName = st.nextToken();
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}
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System.out.println("What is the message?");
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try{
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message = KB_IN.readLine();
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}
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catch(IOException ioe){
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System.err.println("Error in case3 readLine() message" +
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"@ customerHere()");
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}
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Mail objNewMail = new Mail(message,strCustFName+
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" "+strCustLName,FName+" "+LName);
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iVal = objPostOffice.send(objNewMail);
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if(iVal == P3Type.BAD_SENDER){
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System.out.println("You need to open a mailbox " +
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"with us first.");
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}
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else if(iVal == P3Type.NO_RECIPIENT){
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System.out.println("The person you are trying " +
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"to send to doesn't have a " +
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"mailbox here.");
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}
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else {//if(message.equals(P3Type.MAIL_SENT))
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System.out.println("Mail sent successfully, please allow" +
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" 6 to 8 weeks for delivery.");
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}
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break;
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//end case 3
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case 4:
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if(bDebug == true){
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System.out.println("Case " + KB_INPUT_PARSE);
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}
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System.out.println(objPostOffice.retrieve(strCustLName));
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break;
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case 0:
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if(bDebug == true){
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System.out.println("Case " + KB_INPUT_PARSE);
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}
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return false;
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default:
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if(bDebug == true){
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System.out.println("Case " + KB_INPUT_PARSE);
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}
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System.out.println("Didn't enter 0-4, try again");
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return customerHere(strName); //restart
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}//end switch
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}//end for(;;)
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}//end customerHere(String)
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/**
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* Debugging main for class Manager.
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* This method will rigorously test my code.
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*
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* <br><br>
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* @param args a String array of command line arguments.
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*/
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public static void main(String[] args) {
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Manager Bob = new Manager();
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Bob.managerActions();
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}// end of main(String[] args)
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}// end of class Manager
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