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
return false;
		boolean flag = getElement( ).canContain( getModule( ), slotId, defn );
		if ( !flag )
			return false;
		return !getModule( ).isReadOnly( );
	}
	/**
	 * Determines if the given slot can contain the <code>content</code>.
	 * 
	 * @param slotId
	 *            the slot id
	 * @param content
	 *            the design element handle to check
	 * 
	 * @return <code>true</code> if the slot with the given
	 *         <code>slotId</code> can contain the <code>content</code>,
	 *         otherwise <code>false</code>.
	 * 
	 * @see #canContain(int, String)
	 */
	public boolean canContain( int slotId, DesignElementHandle content )
	{
		if ( content == null )
			return false;
		boolean flag = getElement( ).canContain( getModule( ), slotId,
				content.getElement( ) );
		if ( !flag )
			return false;
		return !getModule( ).isReadOnly( );
	}