Is this Adapter Pattern??

[Smith Jone]

My Program has Two interface(DBMain,DBClient);

public interface DBMain 
{
  public void read(int recNo) throws RecordNotFoundException;
}
 
public interface DBClient
{
  public void read(int recNo) throws IOException;
}

AdapterDB is Adapter Class

package suncertify.db
...
public class AdapterDB implements DBClient {
 
  private static Data database = null;
 
  public AdapterDB (String dbPath) {
    database = new Data(dbPath);
  }
  
  public void read(int recNo) throws IOException {
      databse.read(recNo);
  }
}

Data(Data Access) is Adaptee Class

   
package suncertify.db
public class Data implements DBMain {
   public void read(int recNo) throws RecordNotFoundException{
      //To-do
  }
}

Because I must implement Sun supplied interface(DBMain),
So Data class implement DBMain. Make sence??
I must throws IOException in interface as DBClient-interface which declare IOException.It doesn't exist in Sun supplied interface(DBMain)
Because RemoteImplement class must declare RemoteException about Data methods.

Is this Object Adapter Pattern for Sloving these problems??


[Edited topic title. Believe me, nothing is "Important" on JavaRanch, unless we say so ]
[ November 21, 2006: Message edited by: Smith Jone ]
[ November 21, 2006: Message edited by: Barry Gaunt ]

[Mark Smyth]

Yeah the adapter pattern is the best way around the interface problem and the way you are proposing to do it is correct.

[Mihai Radulescu]

Hi,

in the AdapterDB class you can do :
1.Use DbMain instead of Data
2.If you decide to make the database static you can also make it final.

Regards M