1	// SimpleWISE.java
     2	//
     3	// Exercise collections, inheritance, error handling
     4	// Ethan Bolker, for cs110 exam 2, Spring 2004
     5	//
     6	// Fewer comments than would be appropriate for production code.
     7	
     8	import java.util.*;
     9	
    10	public class SimpleWISE
    11	{
    12	    private TreeMap allLists;
    13	
    14	    // Constructor creates lists for SimpleWISE instance.
    15	    public SimpleWISE()
    16	    {
    17		allLists = new TreeMap();
    18		allLists.put("courses",  new CourseList());
    19		allLists.put("students", new StudentList());
    20	    }
    21	
    22	    // What lists are there?
    23	    public String getStatus() 
    24	    {
    25		return "SimpleWISE: created lists for " + allLists.keySet();
    26	    }
    27	
    28	    // Get a String representation of one of the lists.
    29	    public String getPrintableList( String listName ) 
    30		throws WISEException
    31	    {
    32		return get(listName).getPrintableList();
    33	    }
    34	
    35	    // Add an Object to one of the lists.
    36	    public void add( String listName, Object item ) 
    37		throws WISEException
    38	    {
    39		get(listName).add(item);
    40	    }
    41	
    42	    // Retrieve one of the lists, given its name.
    43	    private WISEList get( String listName )
    44		throws WISEException
    45	    {
    46		if ( !allLists.containsKey(listName)) {
    47		    throw new WISEException("No such list: " + listName);
    48		}
    49		return (WISEList)allLists.get(listName);
    50	    }
    51	
    52	    // For unit testing.
    53	    public static void main( String[] args )
    54	    {
    55		Terminal t = new Terminal();
    56		SimpleWISE system = new SimpleWISE();
    57	
    58		t.println(system.getStatus());
    59		try {
    60		    for (int i = 0; i < args.length; i++) {
    61			system.add("courses", args[i]);
    62		    }
    63		    system.add("professors", "Ricardo Menard");
    64		    system.add("students",   "Solomon");
    65		    system.add("students",   "Eleanor");
    66		}
    67		catch( WISEException e ) {
    68		    t.errPrintln(e.getMessage());
    69		}
    70		try {
    71		    t.println( system.getPrintableList("courses") );
    72		    t.println( system.getPrintableList("students") );
    73		}
    74		catch( WISEException e ) {
    75		    t.errPrintln(e.getMessage());
    76		}	
    77	    }
    78	}