Re: [jibx-users] abstract mapping with value style attribute

[Dennis Sosnoski]

The current structure doesn't allow for an abstract mapping to extend 
another abstract mapping. Here's what the binding tutorial says 
(http://jibx.sourceforge.net/tutorial/binding-advanced.html#abstract): 
"Another feature of JiBX is the ability to define abstract base mappings 
that can be extended by other mappings. This feature has a significant 
limitation in that it currently allows only a single layer of abstract 
mapping, but is nonetheless very useful in working with class 
hierarchies." It looks like that information is missing from the 
<mapping> element detailed description, though. Sorry, it's sometimes 
hard to keep everything up to date. If I do a beta 3c release (hopefully 
I won't have to) I'll correct this; for beta 4 I'm hoping to remove the 
limitation.

It's also not in the <mapping> details, but you should use the 
extends="" attribute for any abstract mapping to say what the base class 
is, at least if you want it to work properly when unmarshalling. Take a 
look at the tutorial description of abstract mappings and follow the 
examples there for best results at present.

 - Dennis

Rego-Dacal, Anibal wrote:

I want to use an abstract mapping with a value element with the 
attribute style,
which I extend in another mapping,
but when I marshal the class I get many attributes in the xml.

This is my mapping :

        <mapping name="hawbs" class="States" ordered="false">
                <value field="agent" name="agent" usage="optional"/>
                <collection field="statusList" usage="optional">
                        <structure name="hawb_status" type="TbScan">
                                <value field="unique_id" 
name="unique_id" style="attribute"
                                        usage="optional"/>
                                <structure map-as="BaseTbScan"/>
                        </structure>
                </collection>
        </mapping>
       <mapping class="BaseTbScanPK" abstract="true">
                <value style="attribute" field="_dfPod" name="id" 
get-method="getDfPod"/>
                <value field="_dfPacknr" name="piece_no" 
usage="optional"/>
                <value field="_dfScandat" name="date" usage="optional"/>
                <value field="_dfScantime" name="time" usage="optional"/>
        </mapping>
        <mapping class="BaseTbScan" abstract="true">
                <structure field="_comp_id" type="TbScanPK" >
                        <structure map-as="BaseTbScanPK"/>
                </structure>
                <structure name="status" usage="optional">
                        <value field="_dfScananlass" name="code" 
style="attribute"
                                usage="optional"/>
                </structure>
        </mapping>

And this is the result:

<?xml version="1.0"?>
<hawbs>
    <agent>XXX</agent>
    <hawb_status unique_id="24083" id="724604" id="724604" id="724604" 
id="724604">
        <piece_no>1</piece_no>
        <date>2004-04-10</date>
        <time>12:30:00</time>
        <status code="42"/>
    </hawb_status>
</hawbs>

Where is the error or is it a bug?

Thanks

Anibal



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