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Posted to users@activemq.apache.org by Paul Gale <pa...@gmail.com> on 2013/04/05 01:38:24 UTC
How to create a bean that implements its own custom XML?
Hi,
(I have searched this mailing list's archive looking for Xbean guidance but
none of the other cases match mine.)
I have written a bean extension to ActiveMQ that I can instantiate using
regular bean syntax and everything works just fine.
Therefore there are no classpath issues with ActiveMQ finding my bean's jar
file.
However, I want to take it to the next level and have my bean implement its
own custom XML via Xbean but getting this to work is proving elusive.
ActiveMQ vomits at startup claiming schema validation errors etc that my
bean cannot appear at said location. Like a lot of elements the schema
definition contained in activemq-core.xsd of the element inside which I
wish to instantiate my bean contains the obligatory last entry:
<xs:any namespace='##other' />
This _should_ allow me to extend the element's definition using my custom
XML (putting the X into XML).
However, according to the definition of xs:any
http://www.w3schools.com/schema/el_any.asp it states that "the default
processing of the contents of the element is strict - the XML processor
must obtain the required namespaces and validate the elements".
How should I instruct ActiveMQ's XML processor to find my schema
definition? My bean's XSD file sits at the top level of its jar. Xbean has
generated all the relevant artifacts under
/META-INF/services/org/apache/xbean/spring/... etc.
The beans tag in my activemq.xml file looks as follows:
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:m="http://example.com/activemq/schema"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://activemq.apache.org/schema/core
http://activemq.apache.org/schema/core/activemq-core.xsd
http://example.com/activemq/schema
http://example.com/activemq/schema/example.xsd">
Where the example.com domain contains my bean.
What am I missing? Do I need to create a Spring bean factory for this? I am
a bit a neophyte when it comes to Spring etc so be kind. :)
I have noticed, through experimentation, that if I change the beans tag to
read as follows then my bean IS created, however, the creation of other
ActiveMQ beans subsequently fail:
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:m="http://example.com/activemq/schema"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://activemq.apache.org/schema/core
http://activemq.apache.org/schema/core/activemq-core.xsd
http://example.com/activemq/schema
example.xsd">
Just as aside, I don't understand how the activemq-core.xsd is loaded when
the activemq-all.jar only contains a schema called activemq.xsd (not
activemq-core.xsd) located at the top-level of the jar (like mine is) and
yet is referenced as
http://activemq.apache.org/schema/core/activemq-core.xsd even though 'core'
in said path is a file not a folder as found under
/META-INF/services/org/apache/xbean/spring/... Can someone explain that to
me?
Thanks,
Paul
Re: How to create a bean that implements its own custom XML?
Posted by Christian Posta <ch...@gmail.com>.
Take a look at this blog post to understand a little more about how the
namespaces integrate with spring...
http://www.christianposta.com/blog/?p=111
On Thu, Apr 4, 2013 at 4:38 PM, Paul Gale <pa...@gmail.com> wrote:
> Hi,
>
> (I have searched this mailing list's archive looking for Xbean guidance but
> none of the other cases match mine.)
>
> I have written a bean extension to ActiveMQ that I can instantiate using
> regular bean syntax and everything works just fine.
> Therefore there are no classpath issues with ActiveMQ finding my bean's jar
> file.
>
> However, I want to take it to the next level and have my bean implement its
> own custom XML via Xbean but getting this to work is proving elusive.
>
> ActiveMQ vomits at startup claiming schema validation errors etc that my
> bean cannot appear at said location. Like a lot of elements the schema
> definition contained in activemq-core.xsd of the element inside which I
> wish to instantiate my bean contains the obligatory last entry:
>
> <xs:any namespace='##other' />
>
> This _should_ allow me to extend the element's definition using my custom
> XML (putting the X into XML).
>
> However, according to the definition of xs:any
> http://www.w3schools.com/schema/el_any.asp it states that "the default
> processing of the contents of the element is strict - the XML processor
> must obtain the required namespaces and validate the elements".
>
> How should I instruct ActiveMQ's XML processor to find my schema
> definition? My bean's XSD file sits at the top level of its jar. Xbean has
> generated all the relevant artifacts under
> /META-INF/services/org/apache/xbean/spring/... etc.
>
> The beans tag in my activemq.xml file looks as follows:
>
> <beans
> xmlns="http://www.springframework.org/schema/beans"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xmlns:m="http://example.com/activemq/schema"
> xsi:schemaLocation="http://www.springframework.org/schema/beans
>
> http://www.springframework.org/schema/beans/spring-beans.xsd
> http://activemq.apache.org/schema/core
>
> http://activemq.apache.org/schema/core/activemq-core.xsd
> http://example.com/activemq/schema
> http://example.com/activemq/schema/example.xsd">
>
> Where the example.com domain contains my bean.
>
> What am I missing? Do I need to create a Spring bean factory for this? I am
> a bit a neophyte when it comes to Spring etc so be kind. :)
>
> I have noticed, through experimentation, that if I change the beans tag to
> read as follows then my bean IS created, however, the creation of other
> ActiveMQ beans subsequently fail:
>
> <beans
> xmlns="http://www.springframework.org/schema/beans"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xmlns:m="http://example.com/activemq/schema"
> xsi:schemaLocation="http://www.springframework.org/schema/beans
>
> http://www.springframework.org/schema/beans/spring-beans.xsd
> http://activemq.apache.org/schema/core
>
> http://activemq.apache.org/schema/core/activemq-core.xsd
> http://example.com/activemq/schema
> example.xsd">
>
>
> Just as aside, I don't understand how the activemq-core.xsd is loaded when
> the activemq-all.jar only contains a schema called activemq.xsd (not
> activemq-core.xsd) located at the top-level of the jar (like mine is) and
> yet is referenced as
> http://activemq.apache.org/schema/core/activemq-core.xsd even though
> 'core'
> in said path is a file not a folder as found under
> /META-INF/services/org/apache/xbean/spring/... Can someone explain that to
> me?
>
>
> Thanks,
> Paul
>
--
*Christian Posta*
http://www.christianposta.com/blog
twitter: @christianposta