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
}
	/**
	 * Resolves element with the given element name and name space.
	 * <code>propDefn</code> gives the information that how to resolve the
	 * <code>elementName</code>.
	 * 
	 * @param elementName
	 *            name of the element
	 * @param nameSpace
	 *            name space
	 * @param propDefn
	 *            the property definition
	 * @return the resolved element if the name can be resolved, otherwise,
	 *         return null.
	 * 
	 * @see IModuleNameSpace#resolve(String, PropertyDefn)
	 */
	public DesignElement resolveElement( String elementName, int nameSpace,
			PropertyDefn propDefn )
	{
		ElementRefValue refValue = moduleNameSpaces[nameSpace].resolve(
				elementName, propDefn );
		return refValue.getElement( );
	}
	/**
	 * Resolves element with the given element name and name space.
	 * <code>propDefn</code> gives the information that how to resolve the
	 * <code>elementName</code>.
	 * 
	 * @param element