I was refering to the demo wizard not the howto wizard, although they are similar.
How would the flow code look if you implement the functionality of 2 way navigation (prev, next). Additionally when prev is pressed, validation is skipped. Ivelin ----- Original Message ----- From: "Christopher Oliver" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, December 06, 2002 9:13 PM Subject: Re: [Proposal] Implementing XMLForm with Flow > Um, I think Daniel basically answered this question a long time ago: > http://marc.theaimsgroup.com/?l=xml-cocoon-dev&m=102052662705449&w=2. > > Sorry, I don't have an actual implementation, but I think it's clear > that the corresponding flow code would be much more readable than the > action code in the XML form howto (namely something like below). That is > the whole point of the flow layer - that you don't have to write > state-machine code as in XMLForm actions. Compare the flow version to > the original XMLForm action code reproduced below, and judge for yourself. > > // display form, wait for submission, and > // apply validations; repeat until no violations > function sendView(form, view, uri) { > form.clearViolations(); > if (uri == undefined) { > uri = view + ".xml"; > } > sendPageAndWait(uri, {id: view}); > form.populate(cocoon.request); > if (form.violations != null) { > sendView(form, view, uri); > } > } > > function createForm() { > // create the Form object > // ... > } > > function howToWizard() { > // different form views > // participating in the wizard > var VIEW_START = "start"; > var VIEW_REGISTRATION = "registration"; > var VIEW_INTEREST = "interest"; > var VIEW_GARDENING = "organicGardening"; > var VIEW_COOKING = "cooking"; > var VIEW_SMALLHOLDING = "smallholdingManagement"; > var VIEW_CONFIRM = "confirm"; > var VIEW_END = "end"; > > var form = createForm(); > var jBean = form.getModel(); > sendView(form, VIEW_START); > sendView(form, VIEW_REGISTRATION); > sendView(form, VIEW_INTEREST); > if (jBean.organicGardening) { > sendView(form, VIEW_GARDENING); > } else if (jBean.cooking) { > sendView(form, VIEW_COOKING); > } else if (jBean.smallholdingManagement) { > sendView(form, VIEW_SMALLHOLDING); > } > sendView(form, VIEW_CONFIRM); > sendView(form, VIEW_END); > } > > ------------------------------------------------------------ > > From HowToWizardAction.java: > > .... > > // apply control flow rules > if ( formView.equals ( VIEW_REGISTRATION ) ) > { > if ( command.equals( CMD_NEXT ) ) > { > return page( VIEW_INTEREST ); > } > } > else if ( formView.equals ( VIEW_INTEREST ) ) > { > if ( command.equals( CMD_NEXT ) ) > { > if ( jBean.getOrganicGardening() == true ) > { > return page( VIEW_GARDENING ); > } > else if ( jBean.getCooking() == true ) > { > return page( VIEW_COOKING ); > } > else if ( jBean.getSmallholdingManagement() == true ) > { > return page( VIEW_SMALLHOLDING ); > } > //else if ( getForm().get > return page( VIEW_CONFIRM ); > } > if ( command.equals( CMD_PREV ) ) > { > return page( VIEW_REGISTRATION ); > } > } > else if ( formView.equals ( VIEW_GARDENING ) ) > { > if ( command.equals ( CMD_NEXT ) ) > { > if ( jBean.getCooking() == true ) > { > return page( VIEW_COOKING ); > } > else if ( jBean.getSmallholdingManagement() == true ) > { > return page( VIEW_SMALLHOLDING ); > } > return page( VIEW_CONFIRM ); > } > else if( command.equals( CMD_PREV ) ) > { > return page( VIEW_INTEREST ); > } > } > else if ( formView.equals ( VIEW_COOKING ) ) > { > if ( command.equals ( CMD_NEXT ) ) > { > if ( jBean.getSmallholdingManagement() == true ) > { > return page( VIEW_SMALLHOLDING ); > } > return page( VIEW_CONFIRM ); > } > else if ( command.equals( CMD_PREV ) ) > { > if ( jBean.getOrganicGardening() == true ) > { > return page( VIEW_GARDENING ); > } > return page( VIEW_INTEREST ); > } > } > else if ( formView.equals ( VIEW_SMALLHOLDING ) ) > { > if ( command.equals( CMD_NEXT ) ) > { > return page( VIEW_CONFIRM ); > } > else if ( command.equals( CMD_PREV ) ) > { > if ( jBean.getCooking() == true ) > { > return page( VIEW_COOKING ); > } > else if ( jBean.getOrganicGardening() == true ) > { > return page( VIEW_GARDENING ); > } > return page( VIEW_INTEREST ); > } > } > else if ( formView.equals ( VIEW_CONFIRM ) ) > { > if ( command.equals( CMD_NEXT ) ) > { > return page( VIEW_END ); > } > else if( command.equals( CMD_PREV ) ) > { > if ( jBean.getOrganicGardening() == true ) > { > return page( VIEW_GARDENING ); > } > return page( VIEW_INTEREST ); > } > } > } > > Ivelin Ivanov wrote: > > >Sorry I wasn't clear before. > >I know you can call Java from the flow. > >The question is how to use the flow in a way which significantly reduces > >code > >while making the maintenance easier and improving the readability. > > > >Try to beat the existing XMLForm wizard demo. > >If you succeed, it will be great ! > > > >Fingers crossed, > > > >Ivelin > > > > > >----- Original Message ----- > >From: "Ugo Cei" <[EMAIL PROTECTED]> > >To: <[EMAIL PROTECTED]> > >Sent: Thursday, December 05, 2002 2:36 AM > >Subject: Re: [Proposal] Implementing XMLForm with Flow > > > > > > > > > >>Ivelin Ivanov wrote: > >> > >> > >>>I hope you are the last hero trying to confront this monster. > >>> > >>>The discussion how to combine the two has been going on forever, but we > >>> > >>> > >have > > > > > >>>not come to an agreement. > >>> > >>> > >>I'm currently recovering the previous threads from the archive and > >>reading them. > >> > >> > >> > >>>I would gladly offer my tactical guidance for your effort. > >>> > >>> > >>Thank you. > >> > >> > >> > >>>If I was to do this with Actions, I could use well known and > >>> > >>> > >standardized > > > > > >>>Java APIs - JWSP or JDBC. > >>> > >>> > >>But, as Ovidiu pointed out, you can! > >> > >>var schemaFactory = > >> Packages.org.apache.cocoon.components.validation.SchemaFactory.lookup > >> ("http://www.ascc.net/xml/schematron";); > >>var is = new Packages.org.xml.sax.InputSource > >> ("flows/newuser-schema.xml"); > >>var schema = schemaFactory.compileSchema(is); > >>var validator = schema.newValidator(); > >>validator.setProperty("http://xml.apache.org/cocoon/validator/phase";, > >> "NewUser"); > >>violations = validator.validate(userBean); > >> > >>This is just a quick hack I put together looking at the code for the > >>AbstractXMLFormAction and Form, but it works. I just need to define some > >>symbolic constants for the namespaces and find a way to access a > >>SourceResolver from JavaScript to make it pretty. > >> > >>Anyway, if you prefer to write complex business logic in Java (and I'd > >>agree wholeheartedly with that), you can encapsulate it in a Java method > >>that returns a boolean or an index to drive the flow that will be > >>implemented by an if/then/else or a switch in JavaScript. > >> > >>What do we gain by this? We remove flow logic from the sitemap in the > >>form of actions and put it in the flowscript, where it belongs (IMHO). > >> > >>Ugo > >> > >>-- > >>Ugo Cei - http://www.beblogging.com/blog/ > >> > >> > >>--------------------------------------------------------------------- > >>To unsubscribe, e-mail: [EMAIL PROTECTED] > >>For additional commands, email: [EMAIL PROTECTED] > >> > >> > >> > > > > > >--------------------------------------------------------------------- > >To unsubscribe, e-mail: [EMAIL PROTECTED] > >For additional commands, email: [EMAIL PROTECTED] > > > > > > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, email: [EMAIL PROTECTED] > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED]
