Robert, I tried to use LazyList but I couldn't just put the class in the form definitions (I'm using dynavalidatoractionform). Besides, I also have to create a Form class and overide reset method. It seems that the code below is more easy to implement, since you just have to extend arraylist and place the new class directly in Form definition.
Marcus Em Sex, 2003-12-12 Ãs 15:58, Robert Taylor escreveu: > org.apache.commons.collections.ListUtils.lazyList() does this as well > without having to extend anything. > > http://jakarta.apache.org/commons/collections/api/org/apache/commons/collect > ions/ListUtils.html#lazyList > > robert > > > -----Original Message----- > > From: Nifty Music [mailto:[EMAIL PROTECTED] > > Sent: Friday, December 12, 2003 11:59 AM > > To: [EMAIL PROTECTED] > > Subject: RE: dynamically sized form (mostly solved) > > > > > > Andy & others.... > > > > Thanks to the help of all of you on the list, I've been able to > > fully implement using an ArrayList with a DynaValidatorForm in > > request scope. Special thanks to John Steele for finding the key > > for doing this. Using his idea, I implemented a special class > > which extends ArrayList, providing an overridden get() method > > which adds a new instance of a specified class whenever the > > requested position is greater than the current size of the list. > > I haven't looked into the LazyList stuff too much, but it sounds > > like that would probably accomplish the same sort of thing. The > > code is as follows: > > > > public class DynamicItemRangesList extends ArrayList { > > private Logger log = Logger.getLogger(DynamicList.class); > > > > /** > > * This version of get will expand the list as needed to > > always return > > * an ItemRangesCDTO. Blank objects will be added to the list. > > */ > > public Object get(int pos) { > > while ( this.size() <= pos ) { > > try { > > > > this.add(ItemRangesCDTO.class.newInstance()); > > } catch ( Exception e ) { > > logger.error(e); > > } > > } > > return super.get(pos); > > } > > } > > > > Then, in my struts-config.xml file, I declared the following form-bean: > > > > <form-bean name="inventoryModifyForm" > > type="org.apache.struts.validator.DynaValidatorForm"> > > <form-property name="page" type="java.lang.Integer" /> > > <form-property name="submit" > > type="java.lang.String" /> <form-property > > name="rangeStart" type="java.lang.String" /> > > <form-property name="rangeEnd" > > type="java.lang.String" /> > > <form-property name="inventoryList" > > type="gov.dor.fastr.util.DynamicItemRangesList" /> > > <form-property name="description" type="java.lang.String" > > /> </form-bean> > > > > ..and the following action-mapping: > > > > <action path="/inventoryModifyPopulate" > > type="gov.dor.fastr.action.inventory.InventoryModifyPopulateAction" > > name="inventoryModifyForm" > > scope="request" > > validate="false"> > > <forward name="error" path="fastr.errors" /> > > <forward name="success" path="inventory.modify" /> > > </action> > > > > This solution works like a charm. Thanks again to everyone for > > helping me! I greatly appreciate it! > > > > Thanks, > > > > Brent > > > > > > >Thanks, I figured it out, but it still didn't work. I talked with the > > >lead developer, and we decided to just use session scope for this, and > > >now it works. > > > > > >-Andy > > ____________________________________________________________ > > This message sent using iMail from I-Land Internet Services. > > http://www.iland.net > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
