users@jaxb.java.net

Re: Too many target nodes (Xpath)

From: Pavel Bucek <pavel.bucek_at_oracle.com>
Date: Wed, 20 Apr 2011 09:32:01 +0200

hello,

btw, you can try something like this:

<jxb:bindings node="..." multiple="true" required="false">
         ...
</jxb:bindings>


multiple allows you to select more than one target and required disables
the need to match at least one element.

fyi these properties are non-documented (and experimental), but it could
work for you :)

Pavel


On 4/19/11 10:55 AM, Roger Parkinson wrote:
> Thanks, Lexi.
>
> I'll go for the plugin approach. I'm going to need a plugin for this
> thing anyway so it's just a bit more to add to it.
> I've done a couple of them before
> (http://code.google.com/p/madura-objects/) and they're a nice
> combination of powerful and easy.
>
> Roger
>
> On 19/04/11 19:20, Aleksei Valikov wrote:
>> Hi,
>>
>>> I was trying to do this:
>>> <schema ....
>>> <xsd:annotation>
>>> <xsd:appinfo>
>>> ��� .....
>>> ���<jaxb:bindings node="//xsd:complexType">
>>> ��� ���<annox:annotate>
>>> ��� ��� ���<annox:annotate
>>> annox:class="org.hibernate.search.annotations.Field" annox:name="item" />
>>> ��� ���</annox:annotate>
>>> ���</jaxb:bindings>
>>>
>>> ...
>>>
>>> The intention was to add an annotation onto every generated class.
>>> It looks promising but I get this:
>>>
>>> ����� [xjc] [ERROR] XPath evaluation of "//xsd:complexType" results in too
>>> many (105) target nodes
>>> ����� [xjc]�� line 26 of
>>> file:/home/roger/workspace/madura-objects.google/new.xsd
>>>
>>> I gather this is a problem with XPath (well there's the error message). Is
>>> there a way around it?
>>> Eg specify the syntax differently etc?
>>> Probably a long shot but I figure you guys would have worked around it if
>>> anyone has.
>> XJC does not allow you to customize several nodes at once. So it's not
>> the XPath problem, it's XJC problem. XJC simply disallows this.
>>
>> Options:
>> * File an RFE for JAXB RI, so that this feature is added to XJC.
>> * Write a JAXB plugin which allows adding customization elements to
>> several items at once.
>>
>> The first one is the "official" way. With the second one you can
>> achieve much more flexibility. I find it quite cumbersome defining
>> customizations in schema or binding files. I always wanted something
>> like extra XML files which are just named accordingly.
>>
>> I'm reposting to theusers_at_jaxb.java.net ML.
>>
>> Bye,
>> /lexi
>>
>
> --
> /Roger Parkinson
> Mob +64 21 508 792
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