nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

As we transition to the new Hyland Community, some post links may be temporarily disrupted as we finalize redirects. We apologize for the inconvenience and are working to resolve this as quickly as possible. Details.

4.2.c regression on custom constraint

scouil

I've developped a custom constraint extending the ListOfValuesConstraint.
It was running fine in 4.2.b and before but ends up giving me trouble in 4.2.c

The error happens when looking at the "Workflow Details" of a workflow containing a field based on that constraint.
I get a simple "Failure" popup and a log message including:

Caused by: java.lang.NullPointerException
        at org.alfresco.web.scripts.forms.FormUIGet.processFieldConstraintControl(FormUIGet.java:1956)
‍‍‍‍

The problem seems to be that fieldConfig is null.
Previous version of the file didn't include this check using fieldConfig hence didn't trigger the bug.
The following changed the 7th of december in commit 44483 in the file org.alfresco.web.scripts.forms.FormUIGet.java by replacing

Collections.sort(optionsList, new OptionsComparator());
‍‍‍

with

if (fieldConfig.isSorted())
{
    Collections.sort(optionsList, new OptionsComparator());
}
‍‍‍‍‍‍

I don't really know what this fieldConfig corresponds to and if the spec marks it as mandatory (I tend to believe it's not since a check on it is made a few lines before) so I didn't report it on jira just yet.

PS: Removing the check altogether isn't an option since it would bring back this bug: https://issues.alfresco.com/jira/browse/ALF-16157

Find more posts tagged with

Comments

armino

Same problem here: https://forums.alfresco.com/forum/end-user-discussions/alfresco-share/redering-custom-model-broken-42c-01282013-1702.

It appears that 4.2.c cannot handle any reference to a custom constraint. My exception chain looks the same. Going back to 4.2.b instantly resolved the issue.

It is frustrating and immensely time consuming that such basic things dont work!!!

-Armin

nmcminn

The fieldConfig object referenced in line 1956 of FormUIGet.java appears to be populated by the form config in share-config-custom.xml. I was running into the same NullPointerException at that line when rendering a custom action form. What I did was add a very simple form section to share-config-custom.xml for that form, like so:

    <config evaluator="string-compare" condition="your_condition">
       <forms>
           <form>
                <appearance>
                    <field id="the_field_using_the_constraint"></field>
                </appearance>
            </form>
        </forms>
    </config>
‍‍‍‍‍‍‍‍‍‍‍

It seems that just having the field defined in the form config is enough to make sure that the FormField object is not null, and the NPE goes away.

Hope it works for you

scouil

Hello Nathan,

Yes I came up with the same workaround,

I signaled it on another forum thred that was created on the same issue short after this one (http://forums.alfresco.com/comment/129477#comment-129477) but forgot to report it here as well.
Thanks for your input.

monocromo

Hi, i have the same problem with alfresco 4.2.c and ubuntu 12.04.2 LTS, when i want to edit the property (using share) of a file that use a custom-content with constraint list alfresco share show this error:

An error has occured in the Share component: /share/service/components/form.
It responded with a status of 500 - Internal Error.
Error Code Information: 500 - An error inside the HTTP server which prevented it from fulfilling the request.
Error Message: 03100006 Wrapped Exception (with status template): null
Server: Alfresco Spring WebScripts - v1.2.0 (Release 1207) schema 1.000
Time: 10-apr-2013 15.51.46
Click here to view full technical information on the error.
Exception: org.springframework.extensions.webscripts.WebScriptException - 03100006 Wrapped Exception (with status template): null
org.springframework.extensions.webscripts.AbstractWebScript.createStatusException(AbstractWebScript.java:1067)
‍‍‍‍‍‍‍‍‍‍‍

it's possible solve the problem?
The solution of nmcminn not work!

zorglub

Tried your workaround, and still have the NPE. I can't figure out what "your_condition" should be.

scouil

Hi,

The idea behind this workaround is that if you redefine the form fields explicitly, the NPE will disappear.
Please refer to http://wiki.alfresco.com/wiki/Forms to configure forms in share.

zorglub

Hi, thanks for your reply.
You mean that I should not rely on the automatic form generation and explicitly define a creation/modification form for custom type(s) relying on LIST constraint ?
I added
<code lang="xml">
   <config evaluator="string-compare" condition="your_condition">
      <forms>
         <form>
            <appearance>
               <field id="ag:documentNature"></field>
            </appearance>
         </form>
      </forms>
   </config>
</code>
in share-config-custom.xml and it doesn't correct the NPE.