Bug 150776 Binding parameters of datasources are not evaluated when datasource in a library
I used to defined a datasource with binding parameters (depending on parameters ...). It works well when datasource is defined in the report, but when i tried to put this datasource in a library, binding expressions are not evaluated or not used by the datasource. When debugging the code, two datasources appears, the initial from the library (module=Library) and the linked from the report (module=ReportDesign). The dataset used the datasource of the report, but no binding values are found on the report datasource. The datasource from the library is evaluated correctly but not used.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/DesignElementHandle.java
* element in the tree.
	 * 
	 * This path string helps user locate this element in user interface. It
	 * follows XPath syntax. Each node name indicates the name of the element
	 * definition and the 1-based element position in the slot. The position
	 * information is only available when the element is in the multicardinality
	 * slot.
	 * 
	 * <p>
	 * For example,
	 * <ul>
	 * <li>/report/Body[1]/Label[3] - The third label element in body slot
	 * <li>/report/Styles[1]/Style[1] - The first style in the styles slot
	 * <li>/report/page-setup[1]/Graphic Master Page - The master page in the
	 * page setup slot.
	 * </ul>
	 * <p>
	 * Note: the localized name is used for element type and slot name.
	 * 
	 * @return the path of this element
	 */
	public String getXPath( )
	{
		DesignElementHandle element = this;
		StringBuffer sb = new StringBuffer( );
		do
		{
			ElementDefn elementDefn = (ElementDefn) element.getDefn( );
			DesignElementHandle container = element.getContainer( );
			String slotInfo = null;