Hi Hessah, Thanks for resending your message. Sometimes we miss a message or two that come through the list -- its good to be persistent. See below for my comments on your questions.
Matt Hessah Al-salamah wrote: > Dear Mattew, > > > > I did send the following message to kepler?s mailing list but > unfortunately I didn?t get any reply. I am not sure if my questions > aren?t clear or it was felt that I am too far from the main usage of Kepler. > > > > I would be very thankful if you can advise me and sorry for the > inconvenience. > > > > Kind regards, > > Hessah > > > > My previous message: > > > > I am trying to investigate the ability of using kepler to build a Health > Informatics system. All what I have is the material provided in Kepler?s > web site which didn?t really answer all my questions. I would be very > thankful if I can get answers for the following questions: > > > > Does kepler support human decision? In other words, you ask the user a > question and then depending on the answer you route the workflow. Yes, components can block on user input. Some people have used the BrowserUI component to put up a web form and collect the results. Others write custom components that present a dialog box to give users choices. > > > > Can I customize the code in any of the components? If I need to change a > little bit in the java code of any component is that possible. And if it > is not possible, can I build my own component. Yes, you can add new components. This of course requires Java programming skills. It would be possible to modify the existing components but I think it would be better to clone them and modify the clone just to make it clear that the modifed component differs from the stock component shipped with Kepler. > > > > Does Kepler support different actors with different roles? Some parts > of the flow can be accessed be specific actors depending on their role > while others aren?t allowed. I'm not clear on what you are asking here. Some data and resources could have restricted access (enforced by an external system), and there is an AuthenticationManager that can help with authenticating users when an actor needs access to such resources. Is this what you mean by roles? > > > > Finally, I tried to do a simple database connection to Ms Access but it > didn?t work. What is the database path? Is it something like : > c:\\directoryname\databasename.mdb > > Or DRIVER=Microsoft Access Driver (*.mdb); DBQ=C:\\db1.mdb;PWD=mypass > > Or what? I haven't tried an MS Access connection. However, it should work if you put an appropriate JDBC driver on the classpath and configure the OpenDBConnection actor properly. Each JDBC driver uses a different syntax for its connection information. For oracle, here's an example JDBC connection string: jdbc:oracle:thin:@129.108.20.225:1521:PDB1 this gives host and port connection information, as well as the database name. The information for the MS Access driver is likely a diffeent format, but I'm not sure what it would be -- check the JDBC documentation for details. Efrat Frank at SDSC (who wrote this actor) might be able to give a more specific example for MS Access. > > > > I am struggling a little bit and really need help. Thanks in advance. I hope this helps out -- please feel free to write the list and we'll do our best to help out. > > > > Hessah, > > > > Research Student > > ------------------------------------------------------------------------ > Need a quick answer? Get one in minutes from people who know. Ask your > question on Yahoo! Answers > <http://answers.yahoo.com/;_ylc=X3oDMTFvbGNhMGE3BF9TAzM5NjU0NTEwOARfcwMzOTY1NDUxMDMEc2VjA21haWxfdGFnbGluZQRzbGsDbWFpbF90YWcx>. -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Matthew B. Jones jones at nceas.ucsb.edu Ph: 541-888-2581 ext. 287 National Center for Ecological Analysis and Synthesis (NCEAS) UC Santa Barbara http://www.nceas.ucsb.edu/ecoinformatics ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
