| Time |
S |
Nick |
Message |
| 00:15 |
|
pdurbin |
What are you using now? JSP? |
| 00:15 |
|
pdurbin |
I was confused by all the << >> |
| 05:46 |
|
aditsu |
maybe it's C++? :p |
| 05:58 |
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| 06:03 |
|
Kemikals |
Hi |
| 06:16 |
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| 06:17 |
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| 07:22 |
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| 07:25 |
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| 09:12 |
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| 13:23 |
|
aditsu |
so, it looks like one of the nastiest parts of working with spreadsheets is data formatting |
| 13:24 |
|
aditsu |
POI has an implementation for that, but it's somewhat tied into the library |
| 13:27 |
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| 13:32 |
|
aditsu |
apparently ODF toolkit has something too.. lemme check that |
| 13:47 |
|
aditsu |
ugh, what a terrible library |
| 14:58 |
|
aditsu |
I think I found several bugs too.. |
| 15:08 |
|
aditsu |
anyway, looks like excel and ODS have totally different concepts of dates, times and formats; it's quite amazing that LibreOffice is able to convert between them |
| 15:11 |
|
aditsu |
the ODS model is much better, but also more complicated |
| 16:18 |
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| 16:43 |
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| 17:40 |
|
pdurbin |
I bet RData is different still. |
| 17:41 |
|
aditsu |
never heard of that.. |
| 17:41 |
|
pdurbin |
is the format R uses |
| 17:41 |
|
aditsu |
is it a spreadsheet format? |
| 17:42 |
|
aditsu |
or more generally, tabular data? |
| 17:42 |
|
pdurbin |
yeah, it's for tabular data. When you upload proprietary formats into our app (Dataverse), one of the formats we liberate the data into is Rdata. Also plain text (tsv). |
| 17:44 |
|
aditsu |
a quick search suggests that it's more like a format for storing R objects, like a memory image |
| 17:44 |
|
pdurbin |
yep, but you can write it to disk |
| 17:45 |
|
aditsu |
of course you can, but the point is objects are not necessarily tabular data |
| 17:45 |
|
aditsu |
I'm guessing it's more like json? |
| 17:46 |
|
aditsu |
in terms of structure |
| 17:50 |
|
aditsu |
pdurbin: I have another question though - you use jaxb, right? |
| 17:54 |
|
aditsu |
I'm trying to generate classes for the OpenDocument schema (originally Relax NG), and I'm getting a bunch of errors.. |
| 17:57 |
|
pdurbin |
I see one case of `import javax.xml.bind.Unmarshaller` but it's commented out. That's the only line I see when I grep for `javax.xml.bind` so I guess we don't use jaxb. |
| 18:00 |
|
aditsu |
pdurbin: I think you recommended it to me at one point: http://irclog.greptilian.com/friendlyjava/2016-09-30#i_188322 |
| 18:01 |
|
pdurbin |
you're linking to something pulsar said |
| 18:02 |
|
aditsu |
oops.. starts with p, contains u and r.. what's the difference? :p |
| 18:04 |
|
aditsu |
pdurbin: do you have a preferred way of converting an xml to a structure of java objects and back? |
| 18:04 |
|
aditsu |
(not DOM nodes but more like pojo classes) |
| 18:04 |
|
pdurbin |
I would certainly start with JAXB, since it's the standard. |
| 18:05 |
|
pdurbin |
I feel like we might use DTO objects in our app. |
| 18:05 |
|
aditsu |
ok, you're just not familiar with it I guess |
| 18:05 |
|
pdurbin |
not that part of the code, no, sorry |
| 18:05 |
|
aditsu |
no worries |
| 18:18 |
|
aditsu |
this might be the problem I'm having... https://github.com/relaxng/jing-trang/issues/81 |
| 20:06 |
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| 21:12 |
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| 23:14 |
|
aditsu |
hmm, the concept of choice in an xml schema doesn't seem to map nicely to java |
| 23:16 |
|
pdurbin |
why not? |
| 23:17 |
|
aditsu |
see http://blog.bdoughan.com/2010/10/jaxb-and-xsd-choice-xmlelements.html and http://blog.bdoughan.com/2011/04/xml-schema-to-java-xsd-choice.html |
| 23:18 |
|
aditsu |
you end up with heavy annotations and incomplete type checking |
| 23:21 |
|
aditsu |
I guess a more robust option would be to have a base class/interface, with implementations for the different choices |
| 23:21 |
|
pdurbin |
"Team lead for the TopLink/EclipseLink JAXB". good find |
| 23:21 |
|
aditsu |
no idea if jaxb would support that |
| 23:23 |
|
pdurbin |
"XML Schema has the concept of a choice element. The choice element indicates that one of the elements defined within the choice may occur at this point in the XML document. In this example I will demonstrate how easily this can be mapped using JAXB." |
| 23:23 |
|
pdurbin |
And then he shows how, with annotations. But you don't like all those annotations? Is that the problem? |
| 23:25 |
|
aditsu |
that, and you actually end up with an Object in that version |
| 23:25 |
|
aditsu |
you could put anything in there |
| 23:26 |
|
aditsu |
and a reader commented that if you have different choices with the same data type, it has no way to tell which one it is |
| 23:26 |
|
pdurbin |
but he uses `type=Address.class`, not `type=Object.class` |
| 23:27 |
|
aditsu |
I'm meant Object contactInfo |
| 23:27 |
|
aditsu |
what's stopping you from setting it to 2.5 for example? |
| 23:28 |
|
pdurbin |
oh, I see |
| 23:30 |
|
aditsu |
also, those are only examples of simple (single-element) choices, I wonder what happens in more complex cases |
| 23:32 |
|
pulsar |
O.o |
| 23:33 |
|
pdurbin |
Why use XML anyway? Isn't eveyone using JSON instead these days? :) |
| 23:33 |
|
aditsu |
not for office documents |
| 23:33 |
|
pdurbin |
ah, docx or whatever |
| 23:33 |
|
pdurbin |
xlsx |
| 23:33 |
|
aditsu |
ods :) |
| 23:34 |
|
pdurbin |
yeah |
| 23:34 |
|
pdurbin |
even HTML is XML, basically. more like XML than JSON anyway :) |
| 23:38 |
|
aditsu |
I might sidestep jaxb entirely :p I'm already working on a relax ng-based code generator.. it seems like a lot of work though :/ |
