Ive implemented the stockwatcher application and have adjusted it so
that it stores names and phone numbers. That all seems to be working
ok, however Ive now implemented a "get" function which looks for a
name, and returns a phone number. However, whats happening is that the
first search i do returns nothing, then if i search for the same name
again, then it returns the correct phone number, then if i search for
another name, it returns the first name's phone instead.
eg I have the following data in the datastore:
john 1111
paul 2222
i request the phone number for john and i get back ""
I request the phone number for paul and i get back "1111"
I request the phone number for john and i get back "2222"
Client side Java file contains:
private String GetOneContact(String Name) {
ContactService = GWT.create(ContactService.class);
ContactService.getoneContact(Name,new AsyncCallback<String>()
{
public void onFailure(Throwable error) {
PhoneResult="ERROR";
}
public void onSuccess(String Phone) {
PhoneResult=Phone;
}
});
return (PhoneResult);
}
Server side (ContactServiceImpl.java) contains:
public String getoneContact(String Name) throws NotLoggedInException
{
checkLoggedIn();
String Phone="x";
PersistenceManager pm = getPersistenceManager();
try {
//Query q = pm.newQuery(Contact.class, "user == u &&
Name==n");
Query q = pm.newQuery(Contact.class, "user == u");
q.declareParameters("com.google.appengine.api.users.User u");
//q.declareParameters("John n");
List<Contact> Contacts = (List<Contact>) q.execute(getUser
());
for (Contact contact : Contacts) {
if (Name.equals(contact.getName()))
{Phone=contact.getPhone
();}
}
} finally {
pm.close();
}
return (Phone);
}
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