Re: [Simple-support] De-serialization problem -- valid reference not valid?

[Niall G. <gal...@ya...>]

Hi,

This looks strange, also have id= attributes been added manually? I've never seen this error before? Just wondering is there some other manipulation of the resulting XML. For example id="431" before id="438" looks odd. 

Is this easy to reproduce? Would it be possible to write a test case to expose this problem, at least then I could fix the issue from a known reproducable test.

Thanks,
Niall


--- On Tue, 2/17/09, Alan Deikman <Ala...@zn...> wrote:

> From: Alan Deikman <Ala...@zn...>
> Subject: [Simple-support] De-serialization problem -- valid reference not valid?
> To: sim...@li...
> Date: Tuesday, February 17, 2009, 11:29 AM
> Is the following a known bug?  This is using
> simple-xml-2.0.2 library.  
> I recently upgraded so I don't know if this was showing
> up before.
> 
> I have two instantiations of the same class, each one
> contains a map 
> declared as follows:
> 
>         @ElementMap protected TreeMap<String, Object>
> data;
> 
> Each instance has a map entry similar to a following:
> 
>     data.put("root/source",
> "original");
> 
> When serialized, the overall XML looks good, but when I
> attempt to read 
> it back in, I get an error:
> 
> org.simpleframework.xml.graph.CycleException: Invalid
> reference '439' found
>         at 
> org.simpleframework.xml.graph.ReadGraph.getReference(ReadGraph.java:158)
>         at 
> org.simpleframework.xml.graph.ReadGraph.getInstance(ReadGraph.java:126)
>         at 
> org.simpleframework.xml.graph.ReadGraph.getElement(ReadGraph.java:107)
> 
> The XML looks like this:  (I edited out other entries)
> 
>         <data id="431">
>            <entry>
>              <string
> id="438">root/source</string>
>              <object class="java.lang.String"
> id="439">original</object>
>            </entry>
>         </data>
> 
> Then later in the file:
> 
>         <data id="723">
>            <entry>
>              <string ref="438"/>
>              <object class="java.lang.String"
> ref="439"/>
>            </entry>
>         </data>
> 
> If I manually take out the ref="439" and put in
> some constant, it 
> de-serializes the way you would expect.   My guess is the
> problem has 
> something to do with the the reference is to class Object
> and not class 
> java.lang.String, but the ReadGraph code that throws the
> exception is 
> doing so because it came up with a null out of the
> reference map.  So 
> id="439" never seems to be making into the map.  
>  Is there a fix for this?
> 
> Thanks in advance for any help.
> 
> -- 
> Alan Deikman
> 
> 
> 
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