how to reference an outside object in IoC

[hejrcc]

//MockView.java

public class MockView extends ViewPart {

    public void createPartControl(Composite parent) {		       
		Button btn = new Button(parent, SWT.PUSH);
    }

}

I want to config the btn Button as below:

//beans.xml

<bean id="btn" class="org.eclipse.swt.widgets.Button">
    <constructor-arg>
        <!-- How to config the parent object created out of this file -->
    </constructor-arg>

    <constructor-arg>
        <!-- How to config the static variable of org.eclipse.swt.SWT.PUSH -->
    </constructor-arg>
</bean>

How to config the parent object which not exists in beans.xml and the static vairable of SWT.PUSH ?

Thanks in advance!

[Maurício Linhares]

If it's a static variable you can't get it using the bean factory. Wrap it using a factory bean and then return the static object.

You can find more about factory beans here: FactoryBean

[hejrcc]

Thank you for your advice, but is it advisable of creating a new object in order to ref a static variable?

and the other problem is difficult for, and no any information in the document,

[Maurício Linhares]

If the static variable is just a "singleton" it shoudn't even exist, 'cos Spring can handle singletons natively.

Do you really need a static variable? Why can't you just declare it as a singleton bean in Spring?

A simple factory bean implementation for your problem:

public class Factory implements FactoryBean {

    public boolean isSingleton() {
        return true;
    }

    public Class getObjectType() {
       return SWT.PUSH.getClass();
    }

    public Object getObject() {
        return SWT.PUSH;
    }

}

Now you just need to use this bean as a reference to the static variable in your bean factory config.