I'm traveling right now but will look into this further when I get back
later in the week. I should be able to fix this to work properly.
- Dennis
Original Message:
-----------------
From: Anibal Rego-Dacal [EMAIL PROTECTED]
Date: Sat, 8 May 2004 23:38:08 +0200 (CEST)
To: [EMAIL PROTECTED]
Subject: Re: [jibx-users] abstract mapping with value style attribute
I get the same error as before.
If I go back to using a mapping for TbScan that extends an abstract base
for
BaseTbScan, I still have the problem with the repeated attribute.
It is not enough, to change the TbScanPK class.
If I have only the TbScan and the TbScanPK class without the two base
classes, it works.
But if I have a TbScan which extends the BaseTbscan class, and a TbScanPK
without the base class, I have the attibute two times in the xml.
If the TbScanPK also extends a base class, I have the attribute four times
in the xml.
I would be grateful for a solution, because I can not change the class
hierarchy.
Thanks
Anibal
>I see. There's one simple change you can try for this, which is to add a
><structure> element corresponding to the base class with no name and no
>property, and to use the type attribute on the access to the PK to again
>access the base class:
>
> <structure name="hawb_status" type="TbScan">
> <value field="unique_id" name="unique_id"
> style="attribute" usage="optional"/>
> <structure type="BaseTbScan">
> <structure field="_comp_id" type="BaseTbScanPK">
> <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"/>
> </structure>
> </structure>
> ...
>
>In theory, this should let you access the parent class information as
>part of the binding definition for the child class. I don't know that
>this has ever been tested, though, so no guarantees. If the current JiBX
>code doesn't let you do the <structure type="BaseTbScan">... you can
>enter it as a bug and I'll look into getting it fixed (probably for beta
4).
>
>If this doesn't work, your other approach for now is to go back to using
>a <mapping> for TbScan that extends an abstract base <mapping> for
>BaseTbScan. You're going to have to make some change to the PK classes
>to get this to work, though, since you don't have a separate element for
>the PK and therefore can't define it using a <mapping>.
>
> - Dennis
>
>[EMAIL PROTECTED] wrote:
>
>>I got this exception when I tested your suggestion:
>>
>> [bind] org.jibx.runtime.JiBXException: Field _comp_id not found in class
TbScan at tag "structure"(line 9, col 44, in binding-hawb-status.xml)
>>
>>It only works if the fields are defined in the TbScan and not in the
base class.
>>
>>Thanks
>>
>>Anibal
>>
>>
>>
>>
>>>Okay, I was confused on what you were trying to do in the original
>>>mapping. Abstract mappings are intended to be extended by other mappings
>>>and not used directly, and non-abstract mappings need to have an
>>>associated element name - you were trying to use abstract mappings as
>>>though they were regular mappings, just without an element name. I don't
>>>think you need to use mappings in your case, though - you can just put
>>>everything inline. Here's a cut-and-pasted version of your binding that
>>>should do what you want (untested, so there may be cut-and-paste errors,
>>>but it should at least show you the approach):
>>>
>>> <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 field="_comp_id"
>>>type="TbScanPK" >
>>> <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"/>
>>> </structure>
>>> <structure name="status" usage="optional">
>>> <value field="_dfScananlass"
>>>name="code" style="attribute"
>>> usage="optional"/>
>>> </structure>
>>> </structure>
>>> </collection>
>>> </mapping>
>>>
>>>I wouldn't think you actually want the <mapping> to be unordered, but
>>>left this in since you had it as part of the original version.
>>>
>>> - Dennis
>>>
>>>
>>>
>>
>>
>>[EMAIL PROTECTED] wrote:
>>
>>
>>
>>>I do not want an abstract mapping to extend another abstract mapping.
>>>There is a structure within the element with another mapping extending
an abstract mapping.
>>>These are my classes:
>>>
>>>public class TbScan extends BaseTbScan {
>>> private String unique_id;
>>> ...
>>>}
>>>
>>>public abstract class BaseTbScan implements Serializable {
>>> private TbScanPK _comp_id;
>>> // fields
>>> private java.lang.Integer _dfScananlass;
>>> ...
>>>}
>>>
>>>
>>>public class TbScanPK extends BaseTbScanPK {
>>> ...
>>>}
>>>
>>>public class BaseTbScanPK implements Serializable {
>>> private java.lang.String _dfPod;
>>> private java.lang.Integer _dfPacknr;
>>> private java.sql.Date _dfScandat;
>>> private java.sql.Time _dfScantime;
>>> ...
>>>}
>>>
>>>How can I map this or is not possible?
>>>
>>>Thanks
>>>
>>>Anibal
>>>
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