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
>> >>>>>
>> >>>>>
>> >>>>>
>> >>>>>
>> >>>>> --
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>> >>>>
>> >>>>
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>> >>>
>> >>>
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