Java Reference
In-Depth Information
class StockItemFactoryServant
extends _StockItemFactoryImplBase
{
//Code as shown in step 3 above.
}
5. Compile the server and the idl-generated fi les.
From the directory above directory Sales , execute the following command within a
command window:
javac StockItemServer.java Sales\*.java
(Correct errors and recompile, as necessary.)
6. Create a client.
Our client program will be called StockItemClient.java and, like the server program,
will import package Sales . As with the client program in the previous example, it
should also import org.omg.CosNaming and org.omg.CORBA . In addition to the
steps executed by the client in the previous example, the steps listed below will be
carried out.
￿ Several method calls will be made on the (pre-existing) StockItem object, rather
than just the one made on the Hello object.
￿ A reference to the StockItemFactory object created and registered by the server
will be obtained.
￿ The above reference will be used to create a new StockItem object by invoking
method createStockItem (supplying the arguments required by the constructor).
￿
Methods of the new StockItem object will be invoked, to demonstrate once again
that the object may be treated in just the same way as a local object.
The full code is shown below, with comments indicating the purpose of each
operation.
import Sales.*;
import org.omg.CosNaming.*;
import org.omg.CORBA.*;
public class StockItemClient
{
public static void main(String[] args)
{
try
{
//Create and initialise the ORB…
ORB orb = ORB.init(args,null);
//Get a reference to the root naming context…
org.omg.CORBA.Object objectRef =
orb.resolve_initial_references("NameService");
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