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 whether the namespace to check is duplicate in target module.
	 * This method helps to judge whether the library to check can be included
	 * in target module.
	 * 
	 * @param namespaceToCheck
	 *            the namespace to check
	 * @return true if the namespace to check is duplicate.
	 */
	public boolean isDuplicateNamespace( String namespaceToCheck )
	{
		Module rootHost = this;
		while ( rootHost instanceof Library
				&& ( (Library) rootHost ).getHost( ) != null )
			rootHost = ( (Library) rootHost ).getHost( );
		List libraries = rootHost.getAllLibraries( );
		Iterator iter = libraries.iterator( );
		while ( iter.hasNext( ) )
		{
			Library library = (Library) iter.next( );
			if ( library.getNamespace( ).equals( namespaceToCheck ) )
				return true;
		}
		return false;
	}
	/**
	 * Finds the property binding defined in this module, which has the same
	 * property name with the given property name and has the same element id of
	 * the given element.
	 * 
	 * @param element