Bug 196745 Data Engine implementation of BPS80- Result Set Sharing
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/CacheResultIterator.java
{
			createCacheInputStream( );
			resultClass = new ResultClass( this.metaInputStream );
			rowCount = IOUtil.readInt( rowInputStream );
			int columnSize = IOUtil.readInt( rowInputStream );
			columnList = new ArrayList( );
			for ( int i = 0; i < columnSize; i++ )
			{
				columnList.add( IOUtil.readObject( rowInputStream ) );
			}
			logger.exiting( CacheResultIterator.class.getName( ),
					"CacheResultIterator" );
		}
		catch ( FileNotFoundException e )
		{
			throw new DataException( ResourceConstants.OPEN_CACHE_TEMPFILE_ERROR );
		}
		catch ( IOException e )
		{
			throw new DataException( ResourceConstants.READ_CACHE_TEMPFILE_ERROR );
		}
	}
	/**
	 * 
	 * @throws FileNotFoundException
	 */
	private void createCacheInputStream( ) throws FileNotFoundException
	{
		metaInputStream = new BufferedInputStream( new FileInputStream( getMetaCacheFile( ) ),
				1024 );