Eclipse IDE - Open Call Hierarchy is empty/broken

Question

What should I do, if the "Open Call Hierarchy" is broken (empty for every method in a project)? It only shows the name of the method I wanted to see the call hierarchy for. This happens for all methods I try, even though they are all called by other methods.

It is very useful for code navigation. I do not know how to work without it!

I've tried:

1. Opening eclipse.exe -clean -refresh
2. Restarting Eclipse
3. Closing and reopening the project
4. Updating the project
5. Renaming the .metadata file

I've checked that it searches the whole workspace, and there are no filters on.

Answer 1

I have the same behavior with eclipse Kepler (4.3.2).

I found out, that there is a bug with methods with signature of:

void get(Object o)
Object get(Object o)

In the eclipse Error Log view I find the following exception:

java.lang.NullPointerException
    at org.eclipse.jdt.internal.core.search.matching.ClasspathSourceDirectory.directoryTable(ClasspathSourceDirectory.java:52)
    at org.eclipse.jdt.internal.core.search.matching.ClasspathSourceDirectory.findClass(ClasspathSourceDirectory.java:109)
    at org.eclipse.jdt.internal.core.search.matching.JavaSearchNameEnvironment.findClass(JavaSearchNameEnvironment.java:146)
    at org.eclipse.jdt.internal.core.search.matching.JavaSearchNameEnvironment.findType(JavaSearchNameEnvironment.java:185)
    at org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.askForType(LookupEnvironment.java:145)
    at org.eclipse.jdt.internal.compiler.lookup.PackageBinding.getTypeOrPackage(PackageBinding.java:197)
    at org.eclipse.jdt.internal.compiler.lookup.Scope.getTypeOrPackage(Scope.java:2799)
    at org.eclipse.jdt.internal.compiler.lookup.Scope.getType(Scope.java:2556)
    at org.eclipse.jdt.internal.core.search.matching.MatchLocator.getType(MatchLocator.java:899)
    at org.eclipse.jdt.internal.core.search.matching.MatchLocator.getMethodBinding0(MatchLocator.java:955)
    at org.eclipse.jdt.internal.core.search.matching.MatchLocator.getMethodBinding(MatchLocator.java:907)
    at org.eclipse.jdt.internal.core.search.matching.MethodLocator.matchMethod(MethodLocator.java:327)
    at org.eclipse.jdt.internal.core.search.matching.MethodLocator.resolveLevel(MethodLocator.java:664)
    at org.eclipse.jdt.internal.core.search.matching.ClassFileMatchLocator.locateMatches(ClassFileMatchLocator.java:209)
    at org.eclipse.jdt.internal.core.search.matching.MatchLocator.process(MatchLocator.java:1699)
    at org.eclipse.jdt.internal.core.search.matching.MatchLocator.locateMatches(MatchLocator.java:1143)
    at org.eclipse.jdt.internal.core.search.matching.MatchLocator.locateMatches(MatchLocator.java:1184)
    at org.eclipse.jdt.internal.core.search.matching.MatchLocator.locateMatches(MatchLocator.java:1301)
    at org.eclipse.jdt.internal.core.search.JavaSearchParticipant.locateMatches(JavaSearchParticipant.java:95)
    at org.eclipse.jdt.internal.core.search.BasicSearchEngine.findMatches(BasicSearchEngine.java:231)
    at org.eclipse.jdt.internal.core.search.BasicSearchEngine.search(BasicSearchEngine.java:515)
    at org.eclipse.jdt.core.search.SearchEngine.search(SearchEngine.java:584)
    at org.eclipse.jdt.internal.corext.callhierarchy.CallerMethodWrapper.findChildren(CallerMethodWrapper.java:155)
    at org.eclipse.jdt.internal.corext.callhierarchy.MethodWrapper.performSearch(MethodWrapper.java:301)
    at org.eclipse.jdt.internal.corext.callhierarchy.MethodWrapper.doFindChildren(MethodWrapper.java:232)
    at org.eclipse.jdt.internal.corext.callhierarchy.MethodWrapper.getCalls(MethodWrapper.java:84)
    at org.eclipse.jdt.internal.ui.callhierarchy.DeferredMethodWrapper.getCalls(DeferredMethodWrapper.java:65)
    at org.eclipse.jdt.internal.ui.callhierarchy.DeferredMethodWrapper.fetchDeferredChildren(DeferredMethodWrapper.java:79)
    at org.eclipse.ui.progress.DeferredTreeContentManager$1.run(DeferredTreeContentManager.java:235)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)

In the end, it looks like a bug in this version:

https://bugs.eclipse.org/bugs/show_bug.cgi?id=401272

I assume, that upgrading at least to version 4.4 (Luna) will solve this problem.

Answer 2

When you go to the eclipse bug report for this issue, somebody says, you should install over the Market place the Java 12 support.
When I installed it, it was working properly again

Answer 3

In my case I was trying to get the call hierarchy of a method in the derived class of an abstract class. The requested method was declared abstract in the base class. When I opened the call hierarchy directly on the abstract method instead of the implemented one, everything worked well. (Eclipse Neon).

Answer 4

My problem was that Open Call Hierarchy was searching only the project not the entire Workspace. So I had to click on the small down arrow (in the Call Hierarchy view window on the right; it is the "View Menu" arrow -- a triangle pointing down) in Call Hierarchy view, set the Search Scope > Workspace.

Answer 5

Tried everything in all the answers here, but none of them worked for me. Later I figured out that this was a bug in Eclipse 2019-03 (https://bugs.eclipse.org/bugs/show_bug.cgi?id=545293). Try to upgrade your eclipse or install a newer version. For me installing a newer version(latest version Eclipse 2019-09) solved the problem.

Answer 6

I also tried the suggestions above, as well as the hint given here: http://mschrag.blogspot.co.at/2009/01/open-type-cant-find-your-class.html

Nothing worked until today when I found out that I am a donkey... I once configured a filter in the "Call Hierarchy" view and so no entries were shown because filtered out. Once I removed / disabled the filter everything worked fine again.