[news.eclipse.tools.jdt] Re: NullPointerException in search

[Frederic Fusier <frederic_fusier@xxxxxxxxxx>]

Chris Senior wrote:

> I am running a search in a workspace containing 1 java project. And I 
> get the an NPE (see trace at foot of post) when I run the following 
> search for all classes declared in a project:
>
> SearchPattern pattern = SearchPattern.createPattern(
>                "*", IJavaSearchConstants.CLASS,
>                IJavaSearchConstants.DECLARATIONS,
>                SearchPattern.R_PATTERN_MATCH | 
> SearchPattern.R_CASE_SENSITIVE | SearchPattern.R_ERASURE_MATCH);
> SearchParticipant[] participants = new SearchParticipant[] { SearchEngine
>                    .getDefaultSearchParticipant() };
> IJavaSearchScope scope = SearchEngine
>        .createJavaSearchScope(new IJavaElement[] { selectedProject });
> searchEngine.search(pattern, participants,
>                    scope, requestor, monitor);
>
> Any ideas what is wrong? Interestingly, I can get jdt.ui Java search 
> page to do the same search with no problems and I can't work out what it 
> does differently?
>
> - Chris

It's really interesting that it works using UI but not using directly JDT/Core API...
It should help me to understand what happen here more rapidly.

May you retry these 2 searches with trace activated:
  - programmatic:
    change following Search trace static field value:
        org.eclipse.jdt.internal.core.search.BasicSearchEngine.VERBOSE=true
  - jdt.ui:
    add following line in .options file in <eclipse install dir>/eclipse directory:
        # Reports java search activity
        org.eclipse.jdt.core/debug/search=true
    shutdown/restart eclipse
    perform search

Then attach traces you get in console to bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=130241

Thanks in advance