Bug 196745 Data Engine implementation of BPS80- Result Set Sharing
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/ResultIterator.java
} 
			catch (IOException e) 
			{
				throw new DataException( ResourceConstants.CREATE_CACHE_TEMPFILE_ERROR );
			}
		}
		this.start( );
		logger.exiting( ResultIterator.class.getName( ), "ResultIterator" );
	}
	/**
	 * 
	 * @throws FileNotFoundException
	 */
	private void createCacheOutputStream() throws FileNotFoundException 
	{
		metaOutputStream = new BufferedOutputStream(new FileOutputStream(
				getMetaCacheFile()), 1024);
		rowOutputStream = new DataOutputStream(
				new BufferedOutputStream(new FileOutputStream(
						getRowCacheFile()), 1024));
		File file = getRowCacheFile( );
		file.deleteOnExit();
		file = getMetaCacheFile( );
		file.deleteOnExit();
	}
	
	/**
	 * @throws DataException 
	 * @throws IOException 
	 *