Bug 196745 Data Engine implementation of BPS80- Result Set Sharing
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/CacheResultIterator.java
rowInputStream = new DataInputStream( new BufferedInputStream( new FileInputStream( getRowCacheFile( ) ),
				1024 ) );
	}
	/**
	 * 
	 * @return
	 */
	private File getMetaCacheFile( )
	{
		File file = new File( context.getTmpdir( )
				+ CACHED_FILE_PREFIX + queryResultID + "meta" );
		return file;
	}
	/**
	 * 
	 * @return
	 */
	private File getRowCacheFile( )
	{
		File file = new File( context.getTmpdir( )
				+ CACHED_FILE_PREFIX + queryResultID + "row" );
		return file;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.data.engine.api.IResultIterator#close()
	 */
	public void close( ) throws BirtException
	{