Bug 135474 [Smoke]Data in computed columns can't be read
Details: Data in computed columns can't be read Step: 1. New a datasource and dataset 2. Add a computed columns and input some wore in Expression. 3. Drop the table into layout and preview. Actual result: The column of computed columns only preview undefined.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/data/dte/NativeRowObject.java
{
	Scriptable prototype;
	Scriptable parent;
	LinkedList rsets;
	static final String JS_CLASS_NAME = "DataSetRow";
	public String getClassName( )
	{
		return JS_CLASS_NAME;
	}
	public NativeRowObject( )
	{
	}
	public NativeRowObject( Scriptable parent, LinkedList rsets )
	{
		setParentScope( parent );
		this.rsets = rsets;
	}
	public Object get( String name, Scriptable start )
	{
		Iterator iter = rsets.iterator( );
		while ( iter.hasNext( ) )