Eclipse Community Forums: Eclipse 4 » Could not find satisfiable constructor in codesnippetapp.views.SearchDialog

Home » Eclipse Projects » Eclipse 4 » Could not find satisfiable constructor in codesnippetapp.views.SearchDialog(InjectionException for example in Instant Eclipse book)

Show: Today's Messages :: Show Polls :: Message Navigator

Could not find satisfiable constructor in codesnippetapp.views.SearchDialog [message #1365933]

Mon, 19 May 2014 05:04

Forumer Forumer

Messages: 3
Registered: May 2014

Junior Member

I'd appreciate your help!

Using Eclipse Kepler: As a way to learn e4 and RCP, I am working through the exercises in the book "Instant Eclipse 4 RCP Development" by Ram Kulkarni.

In the chapter on "Creating Custom object using DI" I am getting the following exception:

org.eclipse.e4.core.di.InjectionException: org.eclipse.e4.core.di.InjectionException: Could not find satisfiable constructor in codesnippetapp.views.SearchDialog

I have the following code in handler:

	@Execute
	public void executeFind(@Named(IServiceConstants.ACTIVE_SHELL) Shell shell,
			IEclipseContext ctx) {
		
		SearchDialog dlg = ContextInjectionFactory
				.make(SearchDialog.class, ctx);

		if (dlg.open() != Dialog.OK)
			return;
	}

SearchDialog constructor is as follows:

	@Inject
	public SearchDialog(Shell parentShell, SnippetRepository repository) {
		super(parentShell);
		this.repository = repository;
	}

Little more of the exception:

Caused by: org.eclipse.e4.core.di.InjectionException: Could not find satisfiable constructor in codesnippetapp.views.SearchDialog
at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:342)
at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:254)
at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:162)
at codesnippetapp.handlers.FindHandler.executeFind(FindHandler.java:28)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56)

Report message to a moderator

Re: Could not find satisfiable constructor in codesnippetapp.views.SearchDialog [message #1371794 is a reply to message #1365933]

Wed, 21 May 2014 14:49

Eric Moffatt

Messages: 118
Registered: July 2009

Senior Member

Since your constructor needs 'SnippetRepository' there must be an instance of that class in the Context 'ctx', is there ? If not then at some point you'll need to add one to the context that you're 'make'ing from...if you only have one instance you could place it into the MApplication's context and it'll be available from anywhere...

Report message to a moderator

Re: Could not find satisfiable constructor in codesnippetapp.views.SearchDialog [message #1372835 is a reply to message #1371794]

Thu, 22 May 2014 00:53

Forumer Forumer

Messages: 3
Registered: May 2014

Junior Member

Thanks for your reply!

The Activator.java has the following. If this qualifies, what else could be wrong?

	/*
	 * (non-Javadoc)
	 * @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
	 */
	public void start(BundleContext bundleContext) throws Exception {
		Activator.context = bundleContext;
		IEclipseContext ctx = E4Workbench.getServiceContext();
		SnippetRepository repository = new SnippetRepository();
		ctx.set(SnippetRepository.class, repository);
	}

Report message to a moderator

Re: Could not find satisfiable constructor in codesnippetapp.views.SearchDialog [message #1373168 is a reply to message #1372835]

Thu, 22 May 2014 04:18

Forumer Forumer

Messages: 3
Registered: May 2014

Junior Member

Having said that, I am wondering if Activator is being invoked at all! A debug session is not stopping at a breakpoint I put on the "start" method!

Any suggestions?

Report message to a moderator