Yes, that is exactly what happened. Thanks all. michael
> It would have compiled, but it would have thrown a null pointer > exception during runtime. > -T > > Shashidhar Bhattaram wrote: > >>how did this code even compile? where have you initialized Vector B?? >> >>-----Original Message----- >>From: Eigen Technology Pty Ltd [mailto:[EMAIL PROTECTED]] >> Sent: Tuesday, December 31, 2002 1:49 PM >>To: [EMAIL PROTECTED] >>Subject: RE: Howto create a VECTOR for Velocity >> >> >>Is this Legal? >> >>Vector A = (some Vector from the Database); >>Vector B = null; >> >>for (i=0; i < A.size(); ++i) { >>B.add(A.elementAt(i)); >>} >> >>I am expecting the contents in A will be the same as B after the for >> loop. But: >> >>context.put("entries", B); >> >>returns nothing and this time there is no error log. Anything wrong >> there? >> >>thanks >>michael >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >>>I dont see why that should be an issue as the context uses a Hashmap >>> to store the values... It ideally should have just replaced the entry, >>> unless the wrapper (VelocityContext) is performing some checks... have >>> you taken a look at the code? >>> >>>-----Original Message----- >>>From: Colin Chalmers [mailto:[EMAIL PROTECTED]] >>>Sent: Tuesday, December 31, 2002 12:26 PM >>>To: Turbine Users List; [EMAIL PROTECTED] >>>Subject: Re: Howto create a VECTOR for Velocity >>> >>> >>>The only thing that I can see, and that's probably more to do with >>> your example, is that you use "entry" twice. >>> >>>Do you have logs/stacktraces we could look at? >>> >>>/c >>> >>>----- Original Message ----- >>>From: "Eigen Technology Pty Ltd" <[EMAIL PROTECTED]> >>>To: <[EMAIL PROTECTED]> >>>Sent: Tuesday, December 31, 2002 7:30 AM >>>Subject: Re: Howto create a VECTOR for Velocity >>> >>> >>> >>> >>>>Well, the reason I raised the question was because I tried and failed >>>> using arrays, lists etc when passon to Velocity, i.e. >>>> >>>>context.put("entry", some_list/some_array); >>>>have FAILED. >>>> >>>>This is what I did: >>>> >>>>1. I have a Vector A; <------ context.put("entry", A) is OK with >>>> >>>> >>>Velocity. >>> >>> >>>>2. But I need to do some work on the data in A. So: >>>>3. Extract Object a = A.elementAt(some_position); Do what I have to >>>> do >>>> >>>> >>>AND: >>> >>> >>>>4. Put it back into another Vector B. >>>> B.add(modified_a); >>>> context.put("entry", B); >>>> >>>>BUT velocity does not like it. >>>> >>>>I tried to vary Vector B with Array B, List B, nothing worked, anyone >>>> know where I have done wrong? >>>> >>>>cheers >>>>michael >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>>>or you could probably use an array of an array directly. >>>>> >>>>>On Monday, December 30, 2002, at 04:24 PM, Scott Eade wrote: >>>>> >>>>> >>>>> >>>>>>Michael, >>>>>> >>>>>>Most people on this list will argue strongly that your velocity >>>>>> >>>>>> >>>>templates >>>> >>>> >>>>>>should contain only formatting code and never processing code - put >>>>>> >>>>>> >>>>this >>>> >>>> >>>>>>instead in a pull tool or the screen classes. >>>>>> >>>>>>Provide a method in your pull tool that provides the data you need >>>>>> >>>>>> >>>>- this >>>> >>>> >>>>>>might instantiate and populate a Vector or whatever else you want >>>>>> >>>>>> >>>>to do. >>>> >>>> >>>>>>I don't really understand the specific example you are attempting >>>>>> >>>>>> >>>>to describe below, but an object is an object, whether it is >>>>created by Turbine, Torque, your pull tool or screen class - and >>>> Velocity should >>>> >>>> >>>>>> be >>>>>>able to access it and work with it provided that you have somehow >>>>>> >>>>>> >>>>made >>>> >>>> >>>>>> it >>>>>>available to the context. >>>>>> >>>>>>One thing you can't do in velocity (and shouldn't be able to do) is >>>>>> >>>>>> >>>>instantiate non-primitives (other than String). You can create >>>> references >>>> >>>> >>>>>>to objects, arrays, Strings and ints using #set. >>>>>> >>>>>>BTW: You may like to use ArrayList in preference to Vector. >>>>>> >>>>>>HTH, >>>>>> >>>>>>Scott >>>>>>-- >>>>>>Scott Eade >>>>>>Backstage Technologies Pty. Ltd. >>>>>>http://www.backstagetech.com.au >>>>>>.Mac Chat/AIM: seade at mac dot com >>>>>> >>>>>> >>>>>>On 31/12/2002 10:56 AM, "Eigen Technology Pty Ltd" >>>>>><[EMAIL PROTECTED]> wrote: >>>>>> >>>>>> >>>>>> >>>>>>>Thanks for the advice, >>>>>>> >>>>>>>I knew the Pull Tool part. But my question was on how to create a >>>>>>> >>>>>>> >>>>Vector >>>> >>>> >>>>>>>in this PullTool. >>>>>>> >>>>>>>Say you have 100 rows of data each with 6 cols in your >>>>>>> >>>>>>>$DateTool.TodaysDate() >>>>>>> >>>>>>>function. Before you pass it to Velocity, you have to package them >>>>>>> >>>>>>> >>>>in >>>> >>>> >>>>>>> a >>>>>>>Vector first, right (correct me if I am wrong)? If this vector is >>>>>>> >>>>>>> >>>>not >>>> >>>> >>>>>>> from >>>>>>>Turbine, how do you create it? >>>>>>> >>>>>>>cheers >>>>>>>michael >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>>>you have to configure your TR.properties file. Configure the pull >>>>>>>> >>>>>>>> >>>>service by adding a line like >>>> >>>> >>>>>>>>services.PullService.tool.<scope>.<id> = <classname> >>>>>>>> >>>>>>>>for example: >>>>>>>> >>>>>>>>services.PullService.tool.request.date=com.clavie.myEvents.tool.DateT >>>>>>>> ool >>>>>>>> >>>>>>>>then, you should be able to access it in Velocity with sth like: >>>>>>>> >>>>>>>> >>>>$DateTool.TodaysDate() >>>> >>>> >>>>>>>>David >>>>>>>> >>>>>>>>On Monday, December 30, 2002, at 03:37 PM, Eigen Technology Pty >>>>>>>> >>>>>>>> >>>>Ltd wrote: >>>> >>>> >>>>>>>>>When Turbine extract data from a database, it creates a Vector >>>>>>>>> >>>>>>>>> >>>>and returns >>>> >>>> >>>>>>>>>for Velocity to display. >>>>>>>>> >>>>>>>>>If I want to write a Java Utility, some tabulated calculated >>>>>>>>> >>>>>>>>> >>>>results are >>>> >>>> >>>>>>>>>to be passed on to Velocity, i.e. Vectors not created by >>>>>>>>> >>>>>>>>> >>>>Turbine, how >>>> >>>> >>>>>>>>>should I do it. >>>>>>>>> >>>>>>>>>I tried: >>>>>>>>> >>>>>>>>>Vector TEST=null; >>>>>>>>> >>>>>>>>>etc.... >>>>>>>>> >>>>>>>>>for(i=0; i < somelimit; ++i) { >>>>>>>>>TEST.add(someobject(i)); >>>>>>>>>} >>>>>>>>>etc.... >>>>>>>>> >>>>>>>>>return TEST; >>>>>>>>> >>>>>>>>>Velocity displays nothing, help is much appreciated. >>>>>>>>> >>>>>>>>>michael >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>>-- >>>>>>>>>To unsubscribe, e-mail: >>>>>>>>><mailto:[EMAIL PROTECTED]> >>>>>>>>>For additional commands, e-mail: >>>>>>>>><mailto:[EMAIL PROTECTED]> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>-- >>>>>>>>To unsubscribe, e-mail: >>>>>>>><mailto:[EMAIL PROTECTED]> For >>>>>>>> >>>>>>>> >>>>additional commands, e-mail: >>>><mailto:[EMAIL PROTECTED]> >>>> >>>> >>>>>>> >>>>>>> >>>>>>>-- >>>>>>>To unsubscribe, e-mail: >>>>>>><mailto:[EMAIL PROTECTED]> >>>>>>>For additional commands, e-mail: >>>>>>><mailto:[EMAIL PROTECTED]> >>>>>>> >>>>>>> >>>>>>> >>>>>>-- >>>>>>To unsubscribe, e-mail: >>>>>><mailto:[EMAIL PROTECTED]> >>>>>>For additional commands, e-mail: >>>>>><mailto:[EMAIL PROTECTED]> >>>>>> >>>>>> >>>>>> >>>>>-- >>>>>To unsubscribe, e-mail: >>>>><mailto:[EMAIL PROTECTED]> For additional >>>>> >>>>> >>>>commands, e-mail: <mailto:[EMAIL PROTECTED]> >>>> >>>> >>>> >>>> >>>>-- >>>>To unsubscribe, e-mail: >>>> >>>> >>><mailto:[EMAIL PROTECTED]> >>> >>> >>>>For additional commands, e-mail: >>>> >>>> >>><mailto:[EMAIL PROTECTED]> >>> >>> >>>> >>>> >>>-- >>>To unsubscribe, e-mail: >>><mailto:[EMAIL PROTECTED]> For additional >>> commands, e-mail: <mailto:[EMAIL PROTECTED]> >>> >>> >>>-- >>>To unsubscribe, e-mail: >>><mailto:[EMAIL PROTECTED]> For additional >>> commands, e-mail: <mailto:[EMAIL PROTECTED]> >>> >>> >> >> >> >> >>-- >>To unsubscribe, e-mail: >> <mailto:[EMAIL PROTECTED]> For additional >> commands, e-mail: <mailto:[EMAIL PROTECTED]> >> >> >>-- >>To unsubscribe, e-mail: >> <mailto:[EMAIL PROTECTED]> For additional >> commands, e-mail: <mailto:[EMAIL PROTECTED]> >> >> >> -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
