Bug 205400 error displaying parameter in a table
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/validators/DataColumnNameValidator.java
{
	private static DataColumnNameValidator instance = new DataColumnNameValidator( );
	/**
	 * Returns the singleton validator instance.
	 * 
	 * @return the validator instance
	 */
	public static DataColumnNameValidator getInstance( )
	{
		return instance;
	}
	/**
	 * Validates whether the page size is invalid.
	 * 
	 * @param module
	 *            the module
	 * @param element
	 *            the master page to validate
	 * 
	 * @return error list, each of which is the instance of
	 *         <code>SemanticException</code>.
	 */
	public List validate( Module module, DesignElement element )
	{
		if ( !( element instanceof DataItem ) )
			return Collections.EMPTY_LIST;
		return doValidate( module, (DataItem) element );