Hi all, This is an update/further query on something that was discussed waaay back in Feb (original message is appended).
In brief, I had a problem where classes containing 2D float[][] arrays were not being handled properly when I tried to define them in a mapping file. I got around the issue by *not* defining the field in the mapping file, but marking the class with (auto-complete="true") so that Castor would still serialize/deserialize the data. For better or worse, this generates xml in the following form (this is a example of one element in the array). <myArray xsi:type="java:[F"> <float>0.5</float> <float>0.5</float> </myArray> Now to the problem. Under Java 1.5 this was all working fine, despite the suspect looking "F" type. (It worked, I was happy, back to what I was doing, etc). Under recent testing with the 1.6 beta2 version of Java though, I'm getting errors along the lines of: java.lang.ClassNotFoundException: [F I can't read the old 1.5-created xml, and I've yet to successfully generate any new files under 1.6. I'm not too worried about it yet seeing as 1.6 is still in beta, and maybe it's a fault there rather than with Castor, but I thought I'd mention it none the less. Perhaps someone has more thoughts/opinions on this, or a better way of handling 2D arrays. Thanks Iain > -----Original Message----- > From: Stephen Bash [mailto:[EMAIL PROTECTED] > Sent: 13 February 2006 20:37 > To: [email protected] > Subject: Re: [castor-user] Using a mapping file with classes > containing (eg float[][]) arrays > > Iain- > > I would guess the problem is that there is no type="float[]" > or type="array" for the mapping file (since a 2D array is an > array of arrays). I'm glad to hear Castor handles the field > fine on introspection though :) > > Two things you can try. If you need the mapping file for > other fields, but not the 2D array, just specify the other > fields in the mapping, and then place auto-complete="true" in > the class element of the mapping file. Castor will then > introspect the class as normal and according to your test > case, work fine. This does require that any fields you DON'T > want marshalled must be declared as transient > (transient="true" in the field element). > > The other option is to declare that the field exists, but not > define type or collection attributes for it. This is kind of > sketchy, but there are times that Castor's introspection will > find all the necessary information and do things right. > > I think both of these options are short-term solutions (more > like work-arounds), and it would be beneficial if you could > post an issue in Jira > (http://jira.codehaus.org/browse/CASTOR) so that a long term > solution can be created. It would be great if you have a > test case you can attach. > > Stephen > > On 2/13/06, Iain Milne <[EMAIL PROTECTED]> wrote: > > I have a simple TestClass consisting of a single field that is a 2D > > array: > > public float[][] array; > > > > (and a constructor to initialize the array). > > > > Using Castor's default class inspection stuff, an instance of this > > class can be converted into xml. > > > > If I then attempt to unmarshal the object using the > following, it works: > > > > Unmarshaller u = new Unmarshaller(TestClass.class); > TestClass test = > > (TestClass) u.unmarshal(new StringReader(xml)); > > > > > > However, I need to use a mapping file. The entry for this > class looks > > as > > follows: > > > > <class name="TestClass"> > > <field name="array" type="float" collection="array" direct="true"/> > > </class> > > > > Using this mapping file, the same xml is written out by the > Marshaller. > > No problems so far. However, when attempting to unmarshal > the object > > using the mapping, it fails: > > > > Mapping mapping = new Mapping(); > > mapping.loadMapping( "mapping.xml" ); > > > > Unmarshaller u = new Unmarshaller(mapping); TestClass test = > > (TestClass) u.unmarshal(new StringReader(xml)); > > > > throwing a NullPointerException in > > > org.exolab.castor.xml.UnmarshalHandler.endElement(UnmarshalHan > dler.java: > > 757) > > > > > > This leads me to believe that Castor *can* successfully marshal and > > unmarshal objects with 2D arrays, but either: > > a) not when a mapping file is specified > > b) not when the mapping file is wrong! > > > > Hopefully it's b) and fixable? Or maybe even a c) ? > > > > I don't have any other problems using mapping files, but for some > > reason these 2D arrays are just not working. > > > > Thanks _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ DISCLAIMER: This email is from the Scottish Crop Research Institute, but the views expressed by the sender are not necessarily the views of SCRI and its subsidiaries. This email and any files transmitted with it are confidential to the intended recipient at the e-mail address to which it has been addressed. It may not be disclosed or used by any other than that addressee. If you are not the intended recipient you are requested to preserve this confidentiality and you must not use, disclose, copy, print or rely on this e-mail in any way. Please notify [EMAIL PROTECTED] quoting the name of the sender and delete the email from your system. 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