I was pretty sure it was something I was doing. Yes, I just did a copy and
paste.
Thanks again.
Sent from my iPhone
On Dec 4, 2011, at 2:48 AM, Paul D Yu <p...@mac.com> wrote:
> Kevin
>
> This is a java or may be even programming issue, NOT a WebObjects one.
>
> Because of the || or operator, the runtime has to evaluate the second portion
> of the condition. Since errorMessage is null, length() of errorMessage will
> throw the exception...
>
> Paul
>
> Sent from my iPad
>
> On Dec 4, 2011, at 3:22 AM, Philippe Rabier <prab...@me.com> wrote:
>
>> Hi Kevin
>>
>> You have to use a && operator when you test if your string is not null and
>> length > 0. ;-)
>>
>> Bad copy/paste I guess.
>>
>> Your code is clean.
>>
>> Philippe
>>
>> Sent from my iPhone
>>
>> On 4 déc. 2011, at 09:01, Kevin Spake <sparky0...@yahoo.com> wrote:
>>
>>> Still working on the WebObjects, WOlips and Wonder tutorial, part 2...
>>>
>>> Getting a null pointer exception. I've spent hours trying to figure out the
>>> issue, but I just don't have the experience to properly trouble shoot it.
>>> The stack trace is below, and below that is the code for my DirectAction.
>>> The console says the error occurs on line 55, which is "if (errorMessage !=
>>> null || errorMessage.length() != 0) { "
>>>
>>> The thing is, errorMessage is null at this point. I've entered in valid
>>> user credentials, the session object has been created. The currentUser and
>>> nextPage objects are not null. nextPage is set to "AdminPage". As soon
>>> as I try to step into the "if (errorMessage != null ||
>>> errorMessage.length() != 0) {" line the exception occurs. Is this a
>>> scope issue?
>>>
>>> Thanks.
>>>
>>>
>>> Application: SooperSeekrit Error: java.lang.NullPointerException Reason:
>>> Stack trace:
>>> File Line# Method Package
>>> DirectAction.java 55 loginAction com.sooperseekrit.app
>>> NativeMethodAccessorImpl.java NA invoke0 sun.reflect
>>> NativeMethodAccessorImpl.java 39 invoke sun.reflect
>>> DelegatingMethodAccessorImpl.java 25 invoke sun.reflect
>>> Method.java 597 invoke java.lang.reflect
>>> WODirectAction.java 144 performActionNamed com.webobjects.appserver
>>> ERXDirectAction.java 401 performActionNamed
>>> er.extensions.appserver
>>> WOActionRequestHandler.java 259 _handleRequest
>>> com.webobjects.appserver._private
>>> WOActionRequestHandler.java 158 handleRequest
>>> com.webobjects.appserver._private
>>> ERXDirectActionRequestHandler.java 126 handleRequest
>>> er.extensions.appserver
>>> WOApplication.java 1687 dispatchRequest com.webobjects.appserver
>>> ERXApplication.java 2021 dispatchRequestImmediately
>>> er.extensions.appserver
>>> ERXApplication.java 1986 dispatchRequest er.extensions.appserver
>>> WOWorkerThread.java 144 runOnce com.webobjects.appserver._private
>>> WOWorkerThread.java 226 run com.webobjects.appserver._private
>>> Thread.java 680 run java.lang
>>>
>>>
>>>
>>>
>>>
>>> package com.sooperseekrit.app;
>>>
>>> import java.util.NoSuchElementException;
>>>
>>> import com.webobjects.appserver.WOActionResults;
>>> import com.webobjects.appserver.WOComponent;
>>> import com.webobjects.appserver.WORequest;
>>> import com.webobjects.eocontrol.EOQualifier;
>>>
>>> import er.extensions.appserver.ERXDirectAction;
>>> import er.extensions.eof.ERXEC;
>>>
>>> import com.sooperseekrit.components.AdminPage;
>>> import com.sooperseekrit.components.Main;
>>> import com.sooperseekrit.components.UserPage;
>>> import com.sooperseekrit.model.User;
>>>
>>> public class DirectAction extends ERXDirectAction {
>>> public DirectAction(WORequest request) {
>>> super(request);
>>> }
>>>
>>>
>>> @Override
>>> public WOActionResults defaultAction() {
>>> return pageWithName(Main.class.getName());
>>> }
>>>
>>> public WOActionResults loginAction() {
>>>
>>> WOComponent nextPage = null;
>>> String username = request().stringFormValueForKey("username");
>>> String password = request().stringFormValueForKey("password");
>>> String errorMessage = null;
>>> if (username == null || username.length() == 0 ||
>>> password == null || password.length() == 0) {
>>> errorMessage = "Please enter a username and password";
>>> } else {
>>> try {
>>> EOQualifier qual =
>>> User.USERNAME.eq(username).and(User.PASSWORD.eq(password));
>>> User user =
>>> User.fetchRequiredUser(ERXEC.newEditingContext(), qual);
>>> ((Session)session()).set_currentUser(user);
>>> if (user.group().name().equals("Admin")) {
>>> nextPage =
>>> pageWithName(AdminPage.class.getName());
>>> } else if (user.group().name().equals("User")) {
>>> nextPage =
>>> pageWithName(UserPage.class.getName());
>>> }
>>> } catch (NoSuchElementException e) {
>>> errorMessage = "No user found for those
>>> credentials";
>>> } catch (Exception e) {
>>> // something bad happened
>>> }
>>> }
>>>
>>> if (errorMessage != null || errorMessage.length() != 0) {
>>> nextPage = pageWithName(Main.class.getName());
>>> nextPage.takeValueForKey(errorMessage, "errorMessage");
>>> nextPage.takeValueForKey(username, "username");
>>> nextPage.takeValueForKey(password, "password");
>>> }
>>>
>>> return nextPage;
>>> }
>>> }
>>>
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