David Withers schrieb: > On 06/07/2010 14:41, Andreas Truszkowski wrote: > >> David Withers schrieb: >> >>> On 05/07/2010 18:33, Andreas Truszkowski wrote: >>> >>> >>>> Hi! >>>> >>>> I have to write an iterative filereader activitie. Is there any >>>> documentation about writing iterative activies or can anyone give me a >>>> short description? >>>> >>>> >>> Hi Andreas, >>> >>> There is a tutorial for writing activities here: >>> http://www.mygrid.org.uk/dev/wiki/display/developer/Tutorial+-+Service+invocation+plugin >>> >>> David. >>> >>> >>> >> Hi David, >> >> writing an activitie is not the problem. I need to develope an activitie >> which is able to read i.e. a big file iterative. However that is not >> described in the wiki documentation. >> > > Hi Andreas, > > I don't understand what you mean by iterative in this context. What type > of file do you want to read? Do you need to process the file stream as > it's being read? > > David.
The file should be read in small pieces so that every piece is processed separatly within the underlying workflow. If my file ist several GBs big or maybe a database it is not possible to load the data into the memory at once. I have read somewhere that the API of taverna is be able to do so but I can't find any longer the source. Regards Andreas ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first _______________________________________________ taverna-hackers mailing list [email protected] Web site: http://www.taverna.org.uk Mailing lists: http://www.taverna.org.uk/about/contact-us/ Developers Guide: http://www.taverna.org.uk/developers/
