Getting NoClassDefFoundError: IObservableValue

[Guddu]

Hi Lars,

I am not able to get the instance of IObservableValue" when running
the below code for EMF DataBinding.

I have used these plug-ins for databinding purpose:
- "org.eclipse.core.databinding" ,"org.eclipse.emf.databinding" and
"org.eclipse.emf.databinding.edit".

IObservableValue is available in "org.eclipse.core.databinding".

CO_Person is an interface that is extending EObject interface and
there is CO_PersonImpl class that is implementing CO_Person and
extending EObjectImpl class.

I have created a EMFDataBindingView as per your example and using
CO_Person. I am getting error in "createPartControl()" method when
tring to bind values using bindingContext.bindValue().

public void createPartControl(Composite parent) {

// Lets put thing to order
Layout layout = new GridLayout(2, false);
parent.setLayout(layout);

private CO_Person coPerson;

// Initialize the model
PersonPackage.eINSTANCE.eClass();
// Retrieve the default factory singleton
PersonFactory factory = PersonFactory.eINSTANCE;
coPerson = factory.createCO_Person();

GenericName fname = new GenericNameImpl();
fname.setValue("Ajay");
coPerson.setFirstName(fname);

GenericName lname = new GenericNameImpl();
lname.setValue("Chauhan");
coPerson.setLastName(lname);

EmailAddress email = new EmailAddressImpl();
email.setValue("ajay.c...@ps.net");
coPerson.getEmailAddresses().add(email);


Label firstLabel = new Label(parent, SWT.NONE);
firstLabel.setText("FirstName: ");
// New text element
Text firstName = new Text(parent, SWT.BORDER);
firstName.setText("");

GridData gridData = new GridData();
gridData.horizontalAlignment = GridData.FILL;
gridData.horizontalSpan = 2;
firstName.setLayoutData(gridData);

DataBindingContext bindingContext = new DataBindingContext();
bindingContext.bindValue(SWTObservables.observeText(firstName,
SWT.Modify), EMFObservables.observeValue
(coPerson,PersonPackage.Literals.CO_PERSON__FIRST_NAME), null, null);

Exception details:

java.lang.NoClassDefFoundError: org/eclipse/core/databinding/
observable/value/IObservableValue
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
at java.lang.Class.getConstructor0(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at
org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension
(RegistryStrategyOSGI.java:170)
at


Please let me know the reasons why it is not being available as I have
used "org.eclipse.core.databinding" plug-in in my application



Thanks & Regards,

Ajay Chauhan

[Lars Vogel]

Hi,

does my example work?
http://www.vogella.de/articles/EclipseDataBinding/article.html

Best regars, Lars

2009/8/26 Guddu <call...@gmail.com>:

--
Lars
http://www.vogella.de - Tutorial about Java, Eclipse and Web programming
http://www.twitter.com/vogella - Lars on Twitter

[Guddu]

Hi Lars,

Data Binding is working fine with Beans, POJOs, and JFace given in
your example but not working with EMF.


On Aug 26, 7:20 pm, Lars Vogel <lars.vo...@googlemail.com> wrote:
> Hi,
>
> does my example work?http://www.vogella.de/articles/EclipseDataBinding/article.html
>
> Best regars, Lars
>
> 2009/8/26 Guddu <call2...@gmail.com>:

> > email.setValue("ajay.chau...@ps.net");

> Larshttp://www.vogella.de- Tutorial about Java, Eclipse and Web programminghttp://www.twitter.com/vogella- Lars on Twitter

[Lars Vogel]

The code your provided is not based on my EMF example. Please try my
example and let me know if you face problems there.