Bug 118592 Report error
please see attached design file.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/ResultIterator.java
"getBlob",
					"An error is thrown by DataTypeUtil.",
					e1 );
			throw e1;
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.data.engine.api.IResultIterator#getBytes(org.eclipse.birt.data.engine.api.IBaseExpression)
	 */
	public byte[] getBytes( IBaseExpression dataExpr ) throws BirtException
	{
		try
		{
			return DataTypeUtil.toBytes( getValue( dataExpr ) );
		}
		catch ( BirtException e )
		{
			DataException e1 = new DataException( ResourceConstants.DATATYPEUTIL_ERROR,
					e );
			logger.logp( Level.FINE,
					ResultIterator.class.getName( ),
					"getBytes",
					"An error is thrown by DataTypeUtil.",
					e1 );
			throw e1;
		}
	}
	/**