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
assert libraries.contains( library );
		int posn = libraries.indexOf( library );
		libraries.remove( library );
		return posn;
	}
	/**
	 * Returns the module with the given namespace. This method checks the
	 * namespace in both directly and indirectly included libraries.
	 * 
	 * @param namespace
	 *            the module namespace
	 * @return the module with the given namespace
	 */
	public Library getVisibleLibraryWithNamespace( String namespace )
	{
		if ( libraries == null )
			return null;
		List list = getLibraries( );
		Iterator iter = list.iterator( );
		while ( iter.hasNext( ) )
		{
			Library library = (Library) iter.next( );
			if ( library.getNamespace( ).equals( namespace ) )
				return library;
		}
		return null;
	}
	/**
	 * Returns the module with the given namespace. This method checks the
	 * namespace in both directly and indirectly included libraries.