Try debugging this method:
public static String invokeAndEncodeResponse(Object target,
Method serviceMethod, Object[] args,
In RPC class.
Juan
2011/3/5 GrahamH <[email protected]>
> 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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