How to use

PortableObjectParameterDefinition

in

org.drools.guvnor.models.commons.shared.workitems

@Override
public String asString() {
  if ( isBound() ) {
    return this.getBinding();
  }
  return "null";
}

@UiHandler("lstAvailableBindings")
void lstAvailableBindingsOnChange( ChangeEvent event ) {
  int index = lstAvailableBindings.getSelectedIndex();
  if ( index > 0 ) {
    ( (PortableObjectParameterDefinition) ppd ).setBinding( lstAvailableBindings.getItemText( index ) );
  } else {
    ( (PortableObjectParameterDefinition) ppd ).setBinding( "" );
  }
}

  return clone;
} else if ( ppd instanceof PortableObjectParameterDefinition ) {
  clone = new PortableObjectParameterDefinition();
  clone.setName( ppd.getName() );
  ( (PortableObjectParameterDefinition) clone ).setClassName( ppd.getClassName() );
  ( (PortableObjectParameterDefinition) clone ).setBinding( ( (PortableObjectParameterDefinition) ppd ).getBinding() );
  return clone;
} else if ( ppd instanceof PortableStringParameterDefinition ) {

public WorkItemObjectParameterWidget( PortableObjectParameterDefinition ppd,
                   IBindingProvider bindingProvider,
                   boolean isReadOnly ) {
  super( ppd,
      bindingProvider );
  //Setup widget to use bindings
  this.parameterName.setText( ppd.getName() );
  Set<String> bindings = bindingProvider.getBindings( ppd.getClassName() );
  if ( bindings.size() > 0 ) {
    lstAvailableBindings.clear();
    lstAvailableBindings.addItem( CommonConstants.INSTANCE.Choose() );
    lstAvailableBindings.setEnabled( true && !isReadOnly );
    lstAvailableBindings.setVisible( true );
    int selectedIndex = 0;
    for ( String binding : bindings ) {
      lstAvailableBindings.addItem( binding );
      if ( binding.equals( ppd.getBinding() ) ) {
        selectedIndex = lstAvailableBindings.getItemCount() - 1;
      }
    }
    lstAvailableBindings.setSelectedIndex( selectedIndex );
  }
}

private Set<PortableParameterDefinition> convertWorkItemParameters( final Set<ParameterDefinition> parameters ) {
  final Set<PortableParameterDefinition> pps = new HashSet<PortableParameterDefinition>();
  for ( ParameterDefinition pd : parameters ) {
    final DataType pdt = pd.getType();
    PortableParameterDefinition ppd = null;
    if ( pdt instanceof BooleanDataType ) {
      ppd = new PortableBooleanParameterDefinition();
    } else if ( pdt instanceof FloatDataType ) {
      ppd = new PortableFloatParameterDefinition();
    } else if ( pdt instanceof IntegerDataType ) {
      ppd = new PortableIntegerParameterDefinition();
    } else if ( pdt instanceof ObjectDataType ) {
      ppd = new PortableObjectParameterDefinition();
      final PortableObjectParameterDefinition oppd = (PortableObjectParameterDefinition) ppd;
      final ObjectDataType odt = (ObjectDataType) pdt;
      oppd.setClassName( odt.getClassName() );
    } else if ( pd.getType() instanceof StringDataType ) {
      ppd = new PortableStringParameterDefinition();
    }
    if ( ppd != null ) {
      ppd.setName( pd.getName() );
      pps.add( ppd );
    }
  }
  return pps;
}

public boolean isBound() {
  return ( this.getBinding() != null && !"".equals( this.getBinding() ) );
}

  paramDef = new PortableIntegerParameterDefinition();
} else {
  paramDef = new PortableObjectParameterDefinition();