Re: JasperReport LocalDate question
Re: JasperReport LocalDate question
- Subject: Re: JasperReport LocalDate question
- From: Theodore Petrosky <email@hidden>
- Date: Mon, 31 Jan 2011 11:41:21 -0800 (PST)
> On Jan 31, 2011, at 1:58 PM, Theodore Petrosky wrote:
>
> > Kieran,
> >
> > Thank you for all your hard work on JasperReports. I
> am sure the process is time consuming.
> >
> > So if I understand the sequence from the video, I put
> both javafoundation.jar and joda-time-1.6.2.jar in the
> folder with iReport and link to them with the
> preference/class path preference.
>
> No. The video links javafoundation as an example to show
> how to make NSTimestamp class available in iReport designer.
> You just need to follow the same procedure and link
> joda-time into iReport classpath to make your LocalDate
> class available in iReport.
>
>
> >
> > Will the appropriate class types show up in the
> Property => Field Class? I am able to type in the field
> name manually however no classes show in the list (other
> than the defaults).
>
>
> IIRC, only the built-in class types show up in the list.
> Just type in the fully qualified class name ....
> org.jodatime.Whatever into the Field class or Expression
> class. When you compile the template in iReport, you will
> get a compilation error if it cannot find the class in the
> classpath.
>
>
> >
> > and what about the Text Field? I can not change the
> Expression Class to match the Field's class.
so far so good, but I can only select the built-in classes for the Expression Class of the TextField. so yes I get a compile time error.
I am doing something wrong.
Ted
> >
> > I hope you have time to help me with this.
> >
> > Ted
> >
> >
> >
> > --- On Mon, 1/31/11, Kieran Kelleher <email@hidden>
> wrote:
> >
> >> From: Kieran Kelleher <email@hidden>
> >> Subject: Re: JasperReport LocalDate question
> >> To: "Theodore Petrosky" <email@hidden>
> >> Cc: "Paul Hoadley" <email@hidden>,
> "WebObjects-Dev Mailing List List" <email@hidden>
> >> Date: Monday, January 31, 2011, 8:13 AM
> >> JR is looking for a java.util.Date
> >> because in the iReport template you have defined a
> field as
> >> a java.util.Date.
> >>
> >> First, sorry, but the API compatible example is
> not yet
> >> committed to Wonder. Long story short, I have been
> too busy
> >> with my work, but it is still on my TO DO list and
> I
> >> am feeling anxious (aka., motivated) to get it
> done as soon
> >> as I get a chance which may be sooner rather than
> later.
> >> Meanwhile the original pre-Wonder framework and
> working
> >> example are still available in the http://montreal2010.googlecode.com/svn/trunk/ SVN
> >> repository and can be checked out into a separate
> workspace
> >> for playing with and learning.
> >>
> >>
> >> OK, now back to your problem. Your problem is
> easily
> >> solvable by using the Joda class for your field
> definition
> >> inside your iReport template.
> >>
> >> To find out how, just go to the JasperReports
> video at
> >> about 39 minutes in and listen to the discussion
> about
> >> NSTimestamp, which iReport knows nothing about
> either. In
> >> the video, it shows you how to add apple
> Foundation classes
> >> to iReports classpath so that you can use
> NSTimestamp in
> >> your report template as a field class definition.
> Use the
> >> same procedure to add the JodaTime jar to the
> iReport
> >> classpath and thenuse the LocalDate class for the
> 'Field
> >> Class' in the field Properties settings in
> iReport.
> >>
> >> To help you get concepts, note also the discussion
> about
> >> BigDecimal and class cast exception around 42:15
> on the
> >> video timeline.
> >>
> >> HTH, Kieran
> >>
> >> PS. The fact that we *don't have to* use
> NSTimestamp and
> >> that we can use java.util.Date as a field class
> type insdie
> >> iReport is because NSTimestamp EXTENDS
> java.util.Date.
> >>
> >>
> >> On Jan 31, 2011, at 6:57 AM, Theodore Petrosky
> wrote:
> >>
> >>> Paul,
> >>>
> >>> Thank you for looking at my attempts.
> >>>
> >>> I am using the JasperReports example that
> Kieran
> >> Kelleher created for WOWODC 2010 as my starting
> point. It is
> >> helpful not only for the beginning steps for
> integrating JR
> >> but figuring out iReport to create the report
> templates.
> >>>
> >>> He mentions in the presentation that there
> will be a
> >> fuller example committed to Wonder and perhaps
> this issue is
> >> already addressed. However, in the meantime, I
> will continue
> >> reading the limited documentation on JasperReports
> and
> >> follow the code to see if I can figure out why I
> get this
> >> error.
> >>>
> >>> Of course if I just forget about the date
> resolution
> >> issue and use timestamps the issue goes away, but
> I have to
> >> deal with my app refusing to work when I switch
> platforms.
> >> So I could spend the time learning the methods of
> getting
> >> around the Java dateTime issues.
> >>>
> >>> Thanks again.
> >>>
> >>> Ted
> >>>
> >>>
> >>> --- On Mon, 1/31/11, Paul Hoadley <email@hidden>
> >> wrote:
> >>>
> >>>> From: Paul Hoadley <email@hidden>
> >>>> Subject: Re: JasperReport LocalDate
> question
> >>>> To: "Theodore Petrosky" <email@hidden>
> >>>> Cc: "WebObjects-Dev Mailing List List"
> <email@hidden>
> >>>> Date: Monday, January 31, 2011, 3:52 AM
> >>>> On 31/01/2011, at 12:01 AM, Theodore
> >>>> Petrosky wrote:
> >>>>
> >>>>> So my attempt is to add into LocalDate
> the
> >> extends
> >>>> like this:
> >>>>>
> >>>>> public class LocalDate extends
> >> java.util.Date
> >>>> implements ReadablePartial,
> >> Comparable<Object>
> >>>>> {
> >>>>>
> >>>>> }
> >>>>
> >>>> I don't think you need or want to do
> this. I
> >> don't
> >>>> think your LocalDate wrapper (which, for
> those who
> >> haven't
> >>>> looked at Henrique's example, just
> extends
> >> java.lang.Object,
> >>>> implements ReadablePartial,
> >> Comparable<Object>, and
> >>>> contains a private field of type
> >> org.joda.time.LocalDate)
> >>>> should be a subclass of Date, which is a
> >> full-resolution
> >>>> timestamp type.
> >>>>
> >>>>> but then there is an error:
> >>>>>
> >>>>> - The interface Comparable cannot be
> >> implemented more
> >>>> than once with different arguments:
> >> Comparable<Date>
> >>>> and
> >>>>>
> >>>>
> Comparable<Object>
> >>>>>
> >>>>> so I checked the docs on
> java.util.Date:
> >>>>>
> >>>>> public class Date
> >>>>> extends Object
> >>>>> implements Serializable, Cloneable,
> >>>> Comparable<Date>
> >>>>>
> >>>>> so he implements
> Comparable<Date> but
> >> LocalDate
> >>>> had Comparable<Object>.
> >>>>>
> >>>>> I hate this stuff. So I deleted
> Comparable
> >> from
> >>>> LocalDate and now there is an error with
> a
> >> method:
> >>>>>
> >>>>> Name clash: The method
> compareTo(Object) of
> >> type
> >>>> LocalDate has the same erasure as
> compareTo(T) of
> >> type
> >>>> Comparable<T> but does
> >>>>> not override it
> >>>>>
> >>>>> I made the executive decision to
> comment out
> >> the
> >>>> compareTo() method in LocalDate.
> >>>>>
> >>>>> And to my complete surprise, it
> works.
> >>>>
> >>>> Unfortunately, that's likely to be just
> some good
> >>>> luck. It may well work in this case,
> but it
> >> doesn't
> >>>> seem right to me (or necessary). I
> would go
> >> back and
> >>>> ask why JasperReports is _expecting_ to be
> able to
> >> cast some
> >>>> value to a Date.
> >>>>
> >>>>
> >>>> --
> >>>> Paul.
> >>>>
> >>>> http://logicsquad.net/
> >>>>
> >>>>
> >>>>
> >>>
> >>>
> >>>
> >>>
> _______________________________________________
> >>> Do not post admin requests to the list. They
> will be
> >> ignored.
> >>> Webobjects-dev mailing list
> (email@hidden)
> >>> Help/Unsubscribe/Update your Subscription:
> >>>
> >>> This email sent to email@hidden
> >>
> >>
> >
> >
> >
>
>
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden