Business Interface Pattern

[Prannav Santhosh]

Can some one explain me what is the advantage of using this "Business Interface" pattern ?.. Thanks for your help

[David Newton]

It abstracts away implementation details of business logic, allowing both easier testing of things that use the interfaces, and reuse of business logic in arbitrary ways.

[Prannav Santhosh]

Hi,
I have the following code.

//My remote component interface.
public interface Test extends ILibrary,javax.ejb.EJBObject {
//no method definition here.
}



//my business interface
public interface ILibrary {

public String getName()throws RemoteException;
}


public class LibraryDelegate implements ILibrary {
ILibrary ilib=null;
LibraryDelegate(){
//lookup the ejb and get the reference to the ILibrary Interface.
}

public String getName() throws DesignException {
String s=null;
try {
s= ilib.getName();
} catch (RemoteException e) {
throw new DesignException(e.getMessage());
}

return s;
}

}

The getName() method in the above delegate class give me compilation error saying "Exception DesignExcpetion is not compatible with the throws clause in ILibrary.getName() method". Am i doing something thing wrong ? Thanks for your help.

[David Newton]

Please UseCodeTags when posting code or configuration. Unformatted code and configuration is unnecessarily difficult to read.

[David Newton]

Yes--you're trying to change the signature of an interface's methods.

Please start new topics for new questions.