Bug 121352 The data set binding property cannot be retrieved in report preview layout
In report preview page, the datasource/dataset property binding lists cannot be retrieved. The dataset binding can not work correctly in layout preview because it's value cannot get from the binding list. But in the data set edit page, the binding value can be got. You can refer to the attachment.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/Module.java
/**
	 * Returns the module handle.
	 * 
	 * @return module handle
	 */
	public ModuleHandle getModuleHandle( )
	{
		return (ModuleHandle) getHandle( this );
	}
	/**
	 * Returns the fatal exception, which means some unrecoverable error is
	 * found in the included libraries.
	 * 
	 * @return the fatal exception
	 */
	public Exception getFatalException( )
	{
		return fatalException;
	}
	/**
	 * Sets the fatal exception.
	 * 
	 * @param fatalException
	 *            the fatal exception to set
	 */
	protected void setFatalException( Exception fatalException )
	{
		this.fatalException = fatalException;
	}
	/**