Hey all,
I'm trying to add a SystemAccount class to my project by using the
emailAddress of the loginInfo as an ID for my SystemAccount class.
I've added a SystemAccountService and SystemAccountServiceAsync
interfaces that contains the method to addAccount() and getAccount()
which would be stored as persistent JDO objects. Then on the server
side i have the code for these methods.
The solution GWT compiles no problem, but when i run the application
and go to the entry page it pops up a javascript alert saying 'The
response could not be deserialized" and i can't find out why.
Ill list what i have in my classes
SystemAccount:
import java.io.Serializable;
import javax.jdo.annotations.IdGeneratorStrategy;
import javax.jdo.annotations.IdentityType;
import javax.jdo.annotations.PersistenceCapable;
import javax.jdo.annotations.Persistent;
import javax.jdo.annotations.PrimaryKey;
@PersistenceCapable(identityType = IdentityType.APPLICATION)
public class SystemAccount implements Serializable {
private static final long serialVersionUID = 1L;
@PrimaryKey
@Persistent
private String emailAddress;
public static final int SYSTEMADMIN = 0;
public static final int POOLADMIN = 1;
public static final int POOLUSER = 2;
@Persistent
private String nickname;
@Persistent
private int accountType;
public SystemAccount() {
accountType = POOLUSER;
nickname = "";
}
public String getEmailAddress() {
return emailAddress;
}
public void setEmailAddress(String emailAddress) {
this.emailAddress = emailAddress;
}
public String getNickname() {
return nickname;
}
public void setNickname(String nickname) {
this.nickname = nickname;
}
public int getAccountType() {
return accountType;
}
public void setAccountType(int type) {
this.accountType = type;
}
}
SystemAccountService :
import com.google.gwt.user.client.rpc.RemoteService;
import com.google.gwt.user.client.rpc.RemoteServiceRelativePath;
@RemoteServiceRelativePath("systemaccount")
public interface SystemAccountService extends RemoteService {
public SystemAccount getAccount(String emailAddress);
public void addAccount(SystemAccount Account);
}
SystemAccountServiceAsync:
import com.google.gwt.user.client.rpc.AsyncCallback;
public interface SystemAccountServiceAsync {
public void getAccount(String emailAddress,
AsyncCallback<SystemAccount> async);
public void addAccount(SystemAccount Account, AsyncCallback<Void>
async);
}
SystemAccountServiceImpl:
import com.google.gwt.user.server.rpc.RemoteServiceServlet;
import javax.jdo.JDOHelper;
import javax.jdo.PersistenceManager;
import javax.jdo.PersistenceManagerFactory;
import cs.ubc.ca.cs310.HockeyPool.client.SystemAccount;
import cs.ubc.ca.cs310.HockeyPool.client.SystemAccountService;
public class SystemAccountServiceImpl extends RemoteServiceServlet
implements
SystemAccountService {
/**
*
*/
private static final long serialVersionUID = 1L;
private static final PersistenceManagerFactory pmFactory =
JDOHelper.getPersistenceManagerFactory("transactions-optional");
public static PersistenceManagerFactory getPersistenceManagerFactory()
{
return pmFactory;
}
public void addAccount(SystemAccount Account) {
PersistenceManager pm =
getPersistenceManagerFactory().getPersistenceManager();
try {
pm.currentTransaction().begin();
pm.makePersistent(Account);
pm.flush();
pm.currentTransaction().commit();
} finally {
pm.close();
}
}
public SystemAccount getAccount(String emailAddress) {
PersistenceManager pm =
getPersistenceManagerFactory().getPersistenceManager();
SystemAccount account = null;
try {
pm.currentTransaction().begin();
account = pm.getObjectById(SystemAccount.class, emailAddress);
} catch (Exception e) {
pm.currentTransaction().rollback();
e.printStackTrace();
} finally {
pm.close();
}
return account;
}
}
For getAccount i didn't know how to check if the account actually
exists as a persistent object so i tried to retrieve it and if that
failed then i would just assume that the account doesn't exist yet.
So if somebody could also tell me a better way to do that that would
be great.
But my main issue is getting past the 'the response could not be
deserialized' error
Thanks
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