Re(2): Getting mad with NSNumber data type...
Re(2): Getting mad with NSNumber data type...
- Subject: Re(2): Getting mad with NSNumber data type...
- From: "Mike Bobkiewicz" <email@hidden>
- Date: Mon, 14 Aug 2006 19:55:51 +0200
Hi Chuck,
>Take a look at Value Type on this page: http://developer.apple.com/
>documentation/WebObjects/UsingEOModeler/4WorkingWithAttributes/
>chapter_4_section_3.html
>
>You are probably missing
>d--java.lang.Double
>
>Though I STRONGLY recommend
>B--java.math.BigDecimal
>
>Doubles are not accurate enough and prone to "off by a bit" errors
>going Java <-> JDBC <-> Database
>
>
Thanks for the fast reply, works out of the box. Funny how a simple
additional column in EOModeler changes the world. Maybe WO 4 + OS X
Server 1.0 were more different than I thought after the first look at
XCode. I?m missing the old help center more than ever...
Greetings,
Mike Bobkiewicz
>Chuck
>
>
>On Aug 14, 2006, at 8:56 AM, Mike Bobkiewicz wrote:
>
>> Hi,
>> after some years away from WO development a project brings me back to
>> it. I?m working on a OS X Tiger, XCode 2.4 and MySQL 5 environment.
>> Mastering the first normal problems I?m now at a point of no go: I?ve
>> some fields in my database of type double. After setting the typ for
>> both internal and external data type to "double" in the info window
>> EOModeler sets the Value Class to "NSNumber". Trying to store any
>> value
>> in the variable of a class containing this type of field I get an
>> error
>> message "value type ' ' on attribute 'x' of entity 'y' is invalid. You
>> should fix your EOModel". Trying to insert any calculated values gives
>> compiler error "incompatible types" when I try to assign a double
>> variable. On the other hand Integer works without a problem. What?s
>> wrong? Must I change the class file and change "Number" to "double".
>> Please help.
>>
>> Best regards,
>>
>> Mike Bobkiewicz
>>
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>
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