We can refer to the method annotation of spring MVC. The parameter
HttpServletRequest is optional

@RequestMapping(xxxx)
public void doXXXX(HttpServletRequest request){

}

Best regards,
Lei Zhang

On November 14, 2019 at 10:06:57 AM, Zheng Feng (zh.f...@gmail.com) wrote:

But how can we reference this parameter in the method ? I don't think the
Java support this kind of syntax.

Willem Jiang <willem.ji...@gmail.com> 于2019年11月14日周四 上午9:43写道:

> Can I invoke the booking method like this ?
> booking().
>
> Then, the OmegaContext would be inject as a parameter?
>
> Willem Jiang
>
> Twitter: willemjiang
> Weibo: 姜宁willem
>
> On Thu, Nov 14, 2019 at 9:34 AM Zheng Feng <zh.f...@gmail.com> wrote:
> >
> > So it could introduce an annotation or use the @Resource just like
> > @SagaStart
> > public void booking(@Resource OmegaContext context) {
> > ...
> > }
> >
> > and we also can inject the OmegaContext during invoking the method.
> >
> > Zhang Lei <coolbee...@gmail.com> 于2019年11月13日周三 下午11:42写道:
> >
> > > Hi, Zheng Feng
> > >
> > > Both are ok.
> > >
> > > I saw in [1] that the TransactionContext is passed using parameters.
I
> just
> > > recommend passing some parameters in a consistent way.
> > >
> > > [1]
> > >
> > >
>
https://issues.apache.org/jira/browse/SCB-785?focusedCommentId=16561332&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16561332
> > >
> > > Best regards,
> > > Lei Zhang
> > >
> > > On November 13, 2019 at 9:45:58 PM, Zheng Feng (zh.f...@gmail.com)
> wrote:
> > >
> > > I'm not very clear what could be benefited from these changes ? with
> > > declaring the OmegaContext explicitly ?
> > >
> > > Willem Jiang <willem.ji...@gmail.com> 于2019年11月13日周三 下午3:47写道:
> > >
> > > > If it is optional, we need to inject the OmegaContext dynamically
and
> > > > provide a wrap method for it.
> > > >
> > > > Willem Jiang
> > > >
> > > > Twitter: willemjiang
> > > > Weibo: 姜宁willem
> > > >
> > > > On Wed, Nov 13, 2019 at 3:42 PM Zhang Lei <coolbee...@gmail.com>
> wrote:
> > > > >
> > > > > Hi, Willem Jiang
> > > > >
> > > > > I think OmegaContext is an optional parameter in the method
> > > > >
> > > > >
> > > > > Best regards,
> > > > > Lei Zhang
> > > > >
> > > > > On November 13, 2019 at 2:48:08 PM, Willem Jiang (
> > > willem.ji...@gmail.com
> > > > )
> > > > > wrote:
> > > > >
> > > > > Just a quick question, if user call the booking() method, he need
> to
> > > > > pass the OmegaContext as a parameter.
> > > > > What if the invoker doesn't know anything about the OmegaContext.
> > > > >
> > > > >
> > > > > Willem Jiang
> > > > >
> > > > > Twitter: willemjiang
> > > > > Weibo: 姜宁willem
> > > > >
> > > > > On Tue, Nov 12, 2019 at 11:34 PM Zhang Lei <coolbee...@gmail.com>
> > > wrote:
> > > > > >
> > > > > > Hi, Pack Team
> > > > > >
> > > > > > Currently, the @Autowired annotation is required to get the
> > > > OmegaContext
> > > > > on
> > > > > > the Omega side, but most of the early use does not know the
> existence
> > > > of
> > > > > > the OmegaContext object.
> > > > > >
> > > > > > @Autowired
> > > > > > OmegaContext omegaContext;
> > > > > >
> > > > > > @SagaStart
> > > > > > public void booking() {
> > > > > > omegaContext.globalTxId()
> > > > > > ...
> > > > > > }
> > > > > >
> > > > > > @Compensable(compensationMethod="cancel")
> > > > > > public void car(String from, int amount) {
> > > > > > omegaContext.globalTxId()
> > > > > > ...
> > > > > > }
> > > > > >
> > > > > >
> > > > > > Maybe we should allow the user to get the OmegaContext via
method
> > > > > > parameters. Use the method below to define the OmegaContext
> > > parameter.
> > > > > >
> > > > > > @SagaStart
> > > > > > public void booking(OmegaContext omegaContext) {
> > > > > > omegaContext.globalTxId()
> > > > > > ...
> > > > > > }
> > > > > >
> > > > > > @Compensable(compensationMethod="cancel")
> > > > > > public void car(OmegaContext omegaContext, String from, int
> amount) {
> > > > > > omegaContext.globalTxId()
> > > > > > ...
> > > > > > }
> > > > > >
> > > > > > Any suggestion?
> > > > > >
> > > > > > Best regards,
> > > > > > Lei Zhang
> > > >
> > >
>

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