Bug 137130 The cascading parameter does not work when a column name includes double quotation marks
Description: The cascading parameter does not work when a column name includes double quotation marks Steps to reproduce: 1. download the report design file 2. change the flat file path to the related position 3. save and preview. Actual result: The cascading parameter can not retrieve the data.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/QueryResults.java
*/
	public IPreparedQuery getPreparedQuery()
	{ 
		return queryService.getPreparedQuery( );
	}
	
	/*
	 * @see org.eclipse.birt.data.engine.api.IQueryResults#getResultMetaData()
	 */
	public IResultMetaData getResultMetaData( ) throws DataException
	{
		if ( queryService == null )
			throw new DataException( ResourceConstants.RESULT_CLOSED );
		
		try
		{
			return queryService.getResultMetaData( );
		}
		catch ( DataException e )
		{
			throw e;
		}
		finally
		{
			logger.logp( Level.FINE,
					QueryResults.class.getName( ),
					"getResultMetaData",
					"return the result metadata" );
		}
	}