1 files changed, 288 insertions, 0 deletions
diff --git a/src/interfaces/jdbc/example/corba/StockClient.java b/src/interfaces/jdbc/example/corba/StockClient.java
new file mode 100644
index 00000000000..7613f886fc1
--- /dev/null
+++ b/src/interfaces/jdbc/example/corba/StockClient.java
@@ -0,0 +1,288 @@
+package example.corba;
+
+import java.io.*;
+import java.sql.*;
+import org.omg.CosNaming.*;
+
+/**
+ * This class is the frontend to our mini CORBA application.
+ *
+ * It has no GUI, just a text frontend to keep it simple.
+ *
+ * $Id: StockClient.java,v 1.1 1999/01/25 21:22:03 scrappy Exp $
+ */
+public class StockClient
+{
+    org.omg.CosNaming.NamingContext nameService;
+    
+    stock.StockDispenser dispenser;
+    stock.StockItem	 item;
+    
+    BufferedReader	 in;
+    
+    public StockClient(String[] args) {
+	try {
+	    // We need this for our IO
+	    in = new BufferedReader(new InputStreamReader(System.in));
+	    
+	    // Initialize the orb
+	    org.omg.CORBA.ORB orb = org.omg.CORBA.ORB.init(args,null);
+	    
+	    // Get a reference to the Naming Service
+	    org.omg.CORBA.Object nameServiceObj = orb.resolve_initial_references("NameService");
+	    if(nameServiceObj==null) {
+		System.err.println("nameServiceObj == null");
+		return;
+	    }
+	    
+	    nameService = org.omg.CosNaming.NamingContextHelper.narrow(nameServiceObj);
+	    if(nameService==null) {
+		System.err.println("nameService == null");
+		return;
+	    }
+	    
+	    // Resolve the dispenser
+	    NameComponent[] dispName = {
+		new NameComponent("StockDispenser","Stock")
+	    };
+	    dispenser = stock.StockDispenserHelper.narrow(nameService.resolve(dispName));
+	    if(dispenser==null) {
+		System.err.println("dispenser == null");
+		return;
+	    }
+	    
+	    // Now run the front end.
+	    run();
+	} catch(Exception e) {
+	    System.out.println(e.toString());
+	    e.printStackTrace();
+	    System.exit(1);
+	}
+    }
+    
+    public static void main(String[] args) {
+	new StockClient(args);
+    }
+    
+    public void run() {
+	// First reserve a StockItem
+	try {
+	    item = dispenser.reserveItem();
+	} catch(Exception e) {
+	    System.out.println(e.toString());
+	    e.printStackTrace();
+	    System.exit(1);
+	}
+	
+	mainMenu();
+	
+	// finally free the StockItem
+	try {
+	    dispenser.releaseItem(item);
+	} catch(Exception e) {
+	    System.out.println(e.toString());
+	    e.printStackTrace();
+	    System.exit(1);
+	}
+    }
+    
+    private void mainMenu() {
+	boolean run=true;
+	while(run) {
+	    System.out.println("\nCORBA Stock System\n");
+	    System.out.println("  1 Display stock item");
+	    System.out.println("  2 Remove item from stock");
+	    System.out.println("  3 Put item into stock");
+	    System.out.println("  4 Order item");
+	    System.out.println("  5 Display all items");
+	    System.out.println("  0 Exit");
+	    int i = getMenu("Main",5);
+	    switch(i)
+		{
+		case 0:
+		    run=false;
+		    break;
+		    
+		case 1:
+		    displayItem();
+		    break;
+		    
+		case 2:
+		    bookOut();
+		    break;
+		    
+		case 3:
+		    bookIn();
+		    break;
+		    
+		case 4:
+		    order(0);
+		    break;
+		    
+		case 5:
+		    displayAll();
+		    break;
+		}
+	}
+    }
+    
+    private void displayItem() {
+	try {
+	    int id = getMenu("\nStockID to display",item.getLastID());
+	    if(id>0) {
+		item.fetchItem(id);
+		System.out.println("========================================");
+		
+		String status = "";
+		if(!item.isItemValid())
+		    status=" ** Superceded **";
+		
+		int av = item.getAvailable();
+		
+		System.out.println("      Stock ID: "+id+status+
+				   "\nItems Available: "+av+
+				   "\nItems on order: "+item.getOrdered()+
+				   "\n   Description: "+item.getDescription());
+		System.out.println("========================================");
+		
+		if(av>0)
+		    if(yn("Take this item out of stock?")) {
+			int rem=1;
+			if(av>1)
+			    rem=getMenu("How many?",av);
+			if(rem>0)
+			    item.removeStock(rem);
+		    }
+		
+	    }
+	} catch(Exception e) {
+	    System.out.println(e.toString());
+	    e.printStackTrace();
+	}
+    }
+    
+    private void bookOut() {
+	try {
+	    int id = getMenu("\nStockID to take out",item.getLastID());
+	    if(id>0) {
+		item.fetchItem(id);
+		int av = item.getAvailable();
+		if(av>0)
+		    if(yn("Take this item out of stock?")) {
+			int rem=1;
+			if(av>1)
+			    rem=getMenu("How many?",av);
+			if(rem>0)
+			    item.removeStock(rem);
+		    }
+		    else {
+			System.out.println("This item is not in stock.");
+			int order = item.getOrdered();
+			if(order>0)
+			    System.out.println("There are "+item.getOrdered()+" items on order.");
+			else {
+			    if(item.isItemValid()) {
+				System.out.println("You will need to order some more "+item.getDescription());
+				order(id);
+			    } else
+				System.out.println("This item is now obsolete");
+			}
+		    }
+	    } else
+		System.out.println(item.getDescription()+"\nThis item is out of stock");
+	} catch(Exception e) {
+	    System.out.println(e.toString());
+	    e.printStackTrace();
+	}
+    }
+    
+    // book an item into stock
+    private void bookIn() {
+	try {
+	    int id = getMenu("\nStockID to book in",item.getLastID());
+	    item.fetchItem(id);
+	    System.out.println(item.getDescription());
+	    
+	    if(item.getOrdered()>0) {
+		int am = getMenu("How many do you want to book in",item.getOrdered());
+		if(am>0)
+		    item.addNewStock(am);
+	    } else
+		System.out.println("You don't have any of this item on ordered");
+	    
+	} catch(Exception e) {
+	    System.out.println(e.toString());
+	    e.printStackTrace();
+	}
+    }
+    
+    // Order an item
+    private void order(int id) {
+	try {
+	    if(id==0)
+		id = getMenu("\nStockID to order",item.getLastID());
+	    item.fetchItem(id);
+	    System.out.println(item.getDescription());
+	    int am = getMenu("How many do you want to order",999);
+	    if(am>0)
+		item.orderStock(am);
+	} catch(Exception e) {
+	    System.out.println(e.toString());
+	    e.printStackTrace();
+	}
+    }
+    
+    private void displayAll() {
+	try {
+	    boolean cont=true;
+	    int nr=item.getLastID();
+	    String header = "\nId\tAvail\tOrdered\tDescription";
+	    System.out.println(header);
+	    for(int i=1;i<=nr && cont;i++) {
+		item.fetchItem(i);
+		System.out.println(""+i+"\t"+item.getAvailable()+"\t"+item.getOrdered()+"\t"+item.getDescription());
+		if((i%20)==0) {
+		    if((cont=yn("Continue?")))
+			System.out.println(header);
+		}
+	    }
+	} catch(Exception e) {
+	    System.out.println(e.toString());
+	    e.printStackTrace();
+	}
+    }
+    
+    private int getMenu(String title,int max) {
+	int v=-1;
+	while(v<0 || v>max) {
+	    System.out.print(title);
+	    System.out.print(" [0-"+max+"]: ");
+	    System.out.flush();
+	    try {
+		v = Integer.parseInt(in.readLine());
+	    } catch(Exception nfe) {
+		v=-1;
+	    }
+	}
+	return v;
+    }
+    
+    private boolean yn(String title) {
+	try {
+	    while(true) {
+		System.out.print(title);
+		System.out.flush();
+		String s = in.readLine();
+		if(s.startsWith("y") || s.startsWith("Y"))
+		    return true;
+		if(s.startsWith("n") || s.startsWith("N"))
+		    return false;
+	    }
+	} catch(Exception nfe) {
+	    System.out.println(nfe.toString());
+	    nfe.printStackTrace();
+	    System.exit(1);
+	}
+	return false;
+    }
+}