Error No Label Provider For Org Eclipse
CommunityMarketplaceEventsPlanet EclipseNewsletterVideosParticipateReport a BugForumsMailing ListsWikiIRCHow to ContributeWorking GroupsAutomotiveInternet of ThingsLocationTechLong-Term SupportPolarSysScienceOpenMDM Toggle navigation Bugzilla – Bug231905 Synchronize view shows labels like 'Error: no label provider' for change sets Last modified: 2012-06-20 07:57:46 EDT Home | New | Browse | Search | [?] | Reports | Requests | Help | Log In [x] | Forgot Password Login: [x] | Terms of Use | Copyright Agent First Last Prev Next This bug is not in your last search results. Bug231905 - Synchronize view shows labels like 'Error: no label provider' for change sets Summary: Synchronize view shows labels like 'Error: no label provider' for change sets Status: ASSIGNED Product: Platform Classification: Eclipse Component: CVS Version: 3.3 Hardware: PC Windows XP Importance: P3 major (vote) TargetMilestone: --- Assigned To: platform-cvs-inbox QA Contact: URL: Whiteboard: Keywords: helpwanted, investigate Depends on: 295817 Blocks: Show dependency tree Reported: 2008-05-13 14:55 EDT by Benno Baumgartner Modified: 2012-06-20 07:57 EDT (History) CC List: 6 users (show) benjamin.muskalla dariusz.luksza matthias.sohn steffen.pingel szymon.ptaszkiewicz tomasz.zarna See Also: Attachments screen shot (47.38 KB, image/png) 2008-05-13 14:55 EDT, Benno Baumgartner no flags Details screen shot 2 (13.61 KB, image/png) 2008-05-14 10:25 EDT, Benno Baumgartner no flags Details screenshot gtk (146.54 KB, image/jpeg) 2008-05-20 17:59 EDT, Benjamin Muskalla no flags Details no label provider in egit (61.60 KB, image/jpeg) 2011-07-17 17:40 EDT, Dariusz Luksza no flags Details View All Add an attachment (proposed patch, testcase, etc.) Note You need to log in before you can comment on or make changes to this bug. Description Benno Baumgartner 2008-05-13 14:55:07 EDT Created attachment 100011 [details] screen shot I20080510-2000 1. Show synchronize view 2. Incoming mode 3. Show change sets 4. Synchronize workspace 5. Wait Is: After a while you get a couple of "change sets" called something like 'Error: no label provider blablabla'. See screen shot. Should: I don't know, certainly not that. Comment 1 Tomasz Zarna 2008-05-14 09:43:30 EDT Wow, I've never seen anything like that before. Is it reproducible? Does the error log say anyt
CommunityMarketplaceEventsPlanet EclipseNewsletterVideosParticipateReport a BugForumsMailing ListsWikiIRCHow to ContributeWorking GroupsAutomotiveInternet of ThingsLocationTechLong-Term SupportPolarSysScienceOpenMDM Toggle navigation Bugzilla – Bug243055 No Label Provider Error in Project Explorer for EJB 3 Beans with no Class Last modified: 2008-09-08 03:42:17 EDT Home | New | Browse | Search | [?] | Reports | Requests | Help | Log In [x] | Forgot Password Login: [x] | Terms of Use | Copyright Agent First Last Prev Next This bug is not in your last search results. Bug243055 https://bugs.eclipse.org/bugs/show_bug.cgi?id=231905 - No Label Provider Error in Project Explorer for EJB 3 Beans with no Class Summary: No Label Provider Error in Project Explorer for EJB 3 Beans with no Class Status: CLOSED FIXED Product: WTP Java EE Tools Classification: WebTools Component: jst.j2ee Version: 3.0 Hardware: PC Windows XP https://bugs.eclipse.org/bugs/show_bug.cgi?id=243055 Importance: P3 normal (vote) TargetMilestone: 3.0.2 Assigned To: Kaloyan Raev QA Contact: Chuck Bridgham URL: Whiteboard: Keywords: Depends on: Blocks: Show dependency tree Reported: 2008-08-04 09:14 EDT by Ian Tewksbury Modified: 2008-09-08 03:42 EDT (History) CC List: 1 user (show) kaloyan.r See Also: Flags: cbridgha: review+ Attachments Screen Shot (40.57 KB, image/jpeg) 2008-08-04 09:14 EDT, Ian Tewksbury no flags Details patch (1.71 KB, patch) 2008-09-02 10:43 EDT, Kaloyan Raev no flags Details | Diff View All Add an attachment (proposed patch, testcase, etc.) Note You need to log in before you can comment on or make changes to this bug. Description Ian Tewksbury 2008-08-04 09:14:49 EDT Created attachment 109064 [details] Screen Shot BUILD: WTP-M-3.0.1-20080731174940 STEPS: 1. Create EJB 3.0 project with DD 2. Add the following XML to the DD to add a session bean without a defined class:
I haven't solved it yet you will have to settle for a bug fix.] Random bug: when the cursor hovers over the custom navigator title bar a tooltip opens letting us know https://cvalcarcel.wordpress.com/tag/labelprovider/ that the navigator can't find a label for the root node. The full error message is Error: no label provider for R/. Tells you everything you need to know. Except what the problem is. http://www.vogella.com/tutorials/EclipseDataBinding/article.html Or how to fix it. Or, for Eclipse novices, what R/ means. Luckily this is something that we are not afflicted with here at Hidden Clause. The message did tell us everything we needed error no to know. The Custom Navigator label provider is ignoring the root node used by the navigator (the R/ referred to in the error) and returning an empty string. The code for LabelProvider.getText() is: public String getText(Object element) { String text = ""; //$NON-NLS-1$ if (ICustomProjectElement.class.isInstance(element)) { text = ((ICustomProjectElement)element).getText(); } // else ignore the element return text; } (Notice how it so brilliantly ignores everything except elements of type error no label ICustomProjectElement.) What the message also tells us, by not telling us, is that our zero-length string appears to be causing consternation in the navigator. It is causing so much consternation that the navigator thinks no label provider is available to supply it with a default label for the root node. That something is easily fixed in the LabelProvider. I'm not sure why Eclipse does not default to no string for the root (damn, those double negatives!), but it does not so we have to assign something to it. Since the standard behavior for other navigator views is to use the name of the view, in this case Custom Plug-in Navigator, that is what we will do. Open LabelProvider.java Change getText() to include an else if: public String getText(Object element) { String text = ""; //$NON-NLS-1$ if (ICustomProjectElement.class.isInstance(element)) { text = ((ICustomProjectElement)element).getText(); } else if (IWorkspaceRoot.class.isInstance(element)) { text = "Custom Plug-in Navigator"; } // else ignore the element return text; } Start the runtime workbench and behold the beauty of our new string. For Those of You Who Care I discovered the solution to the above by putting a breakpoint in LabelProvider.getText() and walking the call tree. NavigatorContentServiceLabelProvider.findStyledText() quite explicitly changed the original e
a Java bean implementation 1.4. Using JFaces WritableValue class to track changes 1.5. Data binding and Java objects without change notification 2. Create bindings 2.1. Using the ISideEffect API 2.2. Connecting properties with the DataBindingContext 2.3. Observing map properties 3. Update strategy, converters and validators 3.1. UpdateValueStrategy 3.2. Converter 3.3. Validator 4. More on bindings 4.1. ControlDecorators 4.2. Binding values of a radio button group 4.3. Listening to all changes in the binding 4.4. Placeholder binding with WritableValue 4.5. ComputedValue and observable trackers 5. Data Binding for JFace Viewers 5.1. Binding Viewers 5.2. Observing list details 5.3. ViewerSupport 5.4. Master Detail binding 5.5. Chaining properties 6. Extending data binding with custom observables 6.1. Developing custom observables 6.2. Directly implement IObservable 6.3. Implement an IProperty rather than IObservable directly 6.4. Delegates for common properties of different objects 7. Example: DateTime Widget and Java 8 time API 8. Prerequisites for this tutorial 9. Data Binding with SWT controls 9.1. First example 9.2. More Customer Validations and ControlDecoration 10. Tutorial: WritableValue 11. Exercise: Data binding for a JFace Viewer 12. Using ObservableListContentProvider and ObservableMapLabelProvider 13. About this website 14. Eclipse Data Binding resources 14.1. vogella GmbH training and consulting support Appendix A: Copyright and License JFace Data binding. This tutorial explains Eclipse JFace Data Binding which can be used to synchronize data between different objects. This tutorial is based on Eclipse 4.6. 1. Data binding with JFace 1.1. Using JFace data binding The JFace data binding framework allows to synchronize changes in properties of objects. Validation and conversion during the synchronization process is supported. For example you could bind the String property called firstName of a Java object to a text property of the SWT Text widget. If the user changes the text in the user interface, the corresponding property in the Java object is updated. To observe changes in an attribute of a Java object, a data binding framework needs to be able to register itself as a listener to this attribut