How to use apache beanutils in a NetBeans platform project? (Error with commons-logging)

Posted by I82Much on Stack Overflow See other posts from Stack Overflow or by I82Much
Published on 2010-03-29T17:41:29Z Indexed on 2010/03/29 17:43 UTC
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For starters, this question is not so much about programming in the NetBeans IDE as developing a NetBeans project (e.g. using the NetBeans Platform framework).

I am attempting to use the BeanUtils library to introspect my domain models and provide the properties to display in a property sheet. Sample code:

public class MyNode extends AbstractNode implements PropertyChangeListener {

    private static final PropertyUtilsBean bean = new PropertyUtilsBean();

    // snip

    protected Sheet createSheet() {

        Sheet sheet = Sheet.createDefault();
        Sheet.Set set = Sheet.createPropertiesSet();

        APIObject obj = getLookup().lookup (APIObject.class);

        PropertyDescriptor[] descriptors = bean.getPropertyDescriptors(obj);

        for (PropertyDescriptor d : descriptors) {


            Method readMethod = d.getReadMethod();
            Method writeMethod = d.getWriteMethod();
            Class valueType = d.getClass();
            Property p = new PropertySupport.Reflection(obj, valueType, readMethod, writeMethod);

            set.put(p);

        }
        sheet.put(set);
        return sheet;
}

I have created a wrapper module around commons-beanutils-1.8.3.jar, and added a dependency on the module in my module containing the above code. Everything compiles fine. When I attempt to run the program and open the property sheet view (i.e.. the above code actually gets run), I get the following error:

java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory
    at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:319)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:330)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:254)
    at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:259)
Caused: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory starting from ModuleCL@64e48e45[org.apache.commons.beanutils] with possible defining loaders [ModuleCL@75da931b[org.netbeans.libs.commons_logging]] and declared parents []
    at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:261)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:254)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:399)
Caused: java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
    at org.apache.commons.beanutils.PropertyUtilsBean.<init>(PropertyUtilsBean.java:132)
    at org.myorg.myeditor.MyNode.<clinit>(MyNode.java:35)
    at org.myorg.myeditor.MyEditor.<init>(MyEditor.java:33)
    at org.myorg.myeditor.OpenEditorAction.actionPerformed(OpenEditorAction.java:13)
    at org.openide.awt.AlwaysEnabledAction$1.run(AlwaysEnabledAction.java:139)
    at org.netbeans.modules.openide.util.ActionsBridge.implPerformAction(ActionsBridge.java:83)
    at org.netbeans.modules.openide.util.ActionsBridge.doPerformAction(ActionsBridge.java:67)
    at org.openide.awt.AlwaysEnabledAction.actionPerformed(AlwaysEnabledAction.java:142)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028)
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351)
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
    at javax.swing.AbstractButton.doClick(AbstractButton.java:389)
    at com.apple.laf.ScreenMenuItem.actionPerformed(ScreenMenuItem.java:95)
    at java.awt.MenuItem.processActionEvent(MenuItem.java:627)
    at java.awt.MenuItem.processEvent(MenuItem.java:586)
    at java.awt.MenuComponent.dispatchEventImpl(MenuComponent.java:317)
    at java.awt.MenuComponent.dispatchEvent(MenuComponent.java:305)
[catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:638)
    at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:125)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

I understand that beanutils is using the commons-logging component (wish it mentioned that in the javadoc, but that's OK). I have tried adding the commons-logging component in two different ways (creating a wrapper library around the commons-logging library, and putting a dependency on the Commons Logging Integration library).

Neither solves the problem.

Has anyone successfully used BeanUtils in a NetBeans Platform project?

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