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From: Cesar Lugo <cesar.lugo@sisorg.com.mx>
To: <users@isis.apache.org>
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In-Reply-To: 
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Subject: RE: Restful objects list action result with domain object
 representation instead of links
Date: Thu, 19 Nov 2015 18:17:12 -0600
Message-ID: <005e01d12328$d02191e0$7064b5a0$@lugo@sisorg.com.mx>
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Hello,

Just wondering, is this feature available in apache Isis 1.10.0? I tried to=
 follow a link, but it issues an error "not a string". It would help a lot =
with my client application if I can eagerly load links (parent - child ) ju=
st like in the video.

This link works ok and shows value.href values with its link:
http://localhost:8080/restful/objects/simple.BusinessLocation/1/collections=
/itemBusinessLocations

The this one:
http://localhost:8080/restful/objects/simple.BusinessLocation/1/collections=
/itemBusinessLocations?x-ro-follow-links=3Dvalue.href

issues:

{
className: "java.lang.IllegalArgumentException",
message: "is not a string",
stackTrace: [
"org.apache.isis.viewer.restfulobjects.applib.JsonRepresentation.checkValue=
(JsonRepresentation.java:1712)",
"org.apache.isis.viewer.restfulobjects.applib.JsonRepresentation.getString(=
JsonRepresentation.java:964)",
"org.apache.isis.viewer.restfulobjects.applib.JsonRepresentation.asString(J=
sonRepresentation.java:957)",
"org.apache.isis.viewer.restfulobjects.applib.util.Parser.valueOf(Parser.ja=
va:64)",
"org.apache.isis.viewer.restfulobjects.applib.client.RestfulRequest$Request=
Parameter.valueOf(RestfulRequest.java:93)",
"org.apache.isis.viewer.restfulobjects.server.ResourceContext.getArg(Resour=
ceContext.java:240)",
"org.apache.isis.viewer.restfulobjects.server.ResourceContext.init(Resource=
Context.java:135)",
"org.apache.isis.viewer.restfulobjects.server.ResourceContext.<init>(Resour=
ceContext.java:125)",
"org.apache.isis.viewer.restfulobjects.server.resources.ResourceAbstract.in=
it(ResourceAbstract.java:120)",
"org.apache.isis.viewer.restfulobjects.server.resources.ResourceAbstract.in=
it(ResourceAbstract.java:87)",
"org.apache.isis.viewer.restfulobjects.server.resources.DomainObjectResourc=
eServerside.accessCollection(DomainObjectResourceServerside.java:286)",
"sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)",
"sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:=
62)",
"sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorIm=
pl.java:43)",
"java.lang.reflect.Method.invoke(Method.java:497)",
"org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:=
137)",
"org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMetho=
dInvoker.java:296)",
"org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker=
=2Ejava:250)",
"org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker=
=2Ejava:237)",
"org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher=
=2Ejava:356)",
"org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher=
=2Ejava:179)",
"org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.servi=
ce(ServletContainerDispatcher.java:220)",
"org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(Ht=
tpServletDispatcher.java:56)",
"org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(Ht=
tpServletDispatcher.java:51)",
"javax.servlet.http.HttpServlet.service(HttpServlet.java:790)",
"org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:816)",
"org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandl=
er.java:1684)",
"org.apache.isis.viewer.restfulobjects.server.webapp.IsisTransactionFilterF=
orRestfulObjects.doFilter(IsisTransactionFilterForRestfulObjects.java:41)",=

"org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandl=
er.java:1667)",
"org.apache.isis.core.webapp.IsisSessionFilter.doFilter(IsisSessionFilter.j=
ava:307)",
"org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandl=
er.java:1667)",
"org.apache.isis.core.webapp.diagnostics.IsisLogOnExceptionFilter.doFilter(=
IsisLogOnExceptionFilter.java:52)",
"org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandl=
er.java:1667)",
"org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShir=
oFilter.java:449)",
"org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilte=
r.java:365)",
"org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.ja=
va:90)",
"org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java=
:83)",
"org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubje=
ct.java:383)",
"org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(Abstract=
ShiroFilter.java:362)",
"org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestF=
ilter.java:125)",
"org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandl=
er.java:1667)",
"org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:581)=
",
"org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:1=
43)",
"org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548=
)",
"org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.ja=
va:226)",
"org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.ja=
va:1114)",
"org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:511)"=
,
"org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.jav=
a:185)",
"org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.jav=
a:1048)",
"org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:1=
41)",
"org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHa=
ndlerCollection.java:213)",
"org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollectio=
n.java:109)",
"org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java=
:119)",
"org.eclipse.jetty.server.Server.handle(Server.java:517)",
"org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:302)",
"org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:242=
)",
"org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractCon=
nection.java:245)",
"org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)",
"org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.jav=
a:75)",
"org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun=
(ExecuteProduceConsume.java:213)",
"org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecutePr=
oduceConsume.java:147)",
"org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.jav=
a:654)",
"org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java=
:572)",
"java.lang.Thread.run(Thread.java:745)"
],
causedBy: null
}

Cesar.

-----Original Message-----
From: Dan Haywood [mailto:dan@haywood-associates.co.uk] 
Sent: Wednesday, November 11, 2015 8:45 AM
To: users
Subject: Re: Restful objects list action result with domain object represen=
tation instead of links

It would.  I'll look into it.

Thx
Dan


On 11 November 2015 at 14:43, Willie Loyd Tandingan <tandingan.wlb@gmail.co=
m
> wrote:

> Hey Dan,
>
> I just tried it and works great for domain object, properties, collection=
s!
>
> Is it possible to extend it also for action results? Our use case 
> involves search actions (with keywords, or all) returning lists that 
> need to be displayed in a grid.
>
>
> Many thanks,
> Willie
>
> On Tue, Nov 10, 2015 at 2:26 AM, Dan Haywood 
> <dan@haywood-associates.co.uk
> >
> wrote:
>
> > Hi Willie,
> >
> > Edit:this was in my drafts, forgot to send! Don't think it says 
> > anything you didn't work out already...
> >
> > just following up, I've got the x-ro-follow-links stuff working to
> support
> > the eager loading of either collections, or of parent references; ie
> > ISIS-1232 and ISIS-1233.  My original plan for x-ro-follow-links was 
> > to make it fully generic, but that's a lot of testing without 
> > necessarily
> any
> > real use case.  So I think I'm going to descope it just to support 
> > your
> use
> > cases.
> >
> > To explain how to use this feature I've recorded a screencast [1] 
> > which uses the kitchensink app [2]
> >
> > If you want to try this out, you'll need to checkout the ISIS-1232 
> > branch and build locally.
> >
> > Feedback welcome!
> >
> > Thx
> > Dan
> >
> > [1] https://youtu.be/hSKnqqBQ7Zo
> > [2] https://github.com/isisaddons/isis-app-kitchensink
> > Hi Willie,
> >
> > I admit I haven't thought about any of this too much over and above
> what's
> > in the spec (that I wrote a *long* time ago).  I just wanted to 
> > commit myself mentally to doing this stuff soon.
> >
> > I know that some of this stuff has been implemented on Naked 
> > Objects.NET, so I will check with those guys (Richard and Stef) to 
> > see how they did
> it.
> >
> > But if you have ideas, please feel free to comment on the tickets raise=
d.
> >
> > Thx
> > Dan
> >
> >
> >
> > On 4 November 2015 at 16:57, Willie Loyd Tandingan < 
> > tandingan.wlb@gmail.com>
> > wrote:
> >
> > > That's great to hear!
> > >
> > > I'm pretty curious on how x-ro-sort-by, x-ro-page, and 
> > > x-ro-page-size
> > will
> > > be implemented. Will these parameters be acquired from a request 
> > > scoped service or something like an action invocation context? How 
> > > about the properties for the paged collection e.g. total number of 
> > > records, page number, size, etc.?
> > >
> > > On Tue, Nov 3, 2015 at 8:31 AM, Dan Haywood <
> > dan@haywood-associates.co.uk>
> > > wrote:
> > >
> > > > I've raised ISIS-1232, ISIS-1233, ISIS-1234 and ISIS-1235 for these=
=2E
> > > I'll
> > > > aim to implement the first two (x-ro-follow-links, table grids) 
> > > > in
> > > 1.11.0.
> > > >
> > > > Thx
> > > > Dan
> > > >
> > > > https://issues.apache.org/jira/browse/ISIS-1232
> > > > https://issues.apache.org/jira/browse/ISIS-1233
> > > > https://issues.apache.org/jira/browse/ISIS-1234
> > > > https://issues.apache.org/jira/browse/ISIS-1235
> > > >
> > > >
> > > > On 15 October 2015 at 22:26, Dan Haywood <
> dan@haywood-associates.co.uk
> > >
> > > > wrote:
> > > >
> > > > > OK, I can focus on those sections, as and when I get the chance.
> > > > >
> > > > > IIRC, I did implement some of the x-ro-follow-links stuff, but 
> > > > > it
> > must
> > > > > have been over 2 years ago, so I forget the details as to how 
> > > > > to
> make
> > > it
> > > > > work exactly.  Some slightly odd xpath-like syntax, I think.
> > > > >
> > > > > Thx
> > > > > Dan
> > > > >
> > > > > On 14 October 2015 at 19:29, Willie Loyd Tandingan < 
> > > > > tandingan.wlb@gmail.com> wrote:
> > > > >
> > > > >> Hello Dan,
> > > > >>
> > > > >> The short answer is no.  I'm not averse to enhancing this 
> > > > >> with
> > > > extensions
> > > > >> > as they make sense.
> > > > >> >
> > > > >> > But the longer answer is that there a couple of SPI 
> > > > >> > services
> that
> > > > allow
> > > > >> you
> > > > >> > to customize the representations, [1], [2].  The default RO
> > > > >> representations
> > > > >> > are performed by an implementation of [1].
> > > > >> >
> > > > >> > Eventually I'm thinking that Isis might provide 
> > > > >> > out-of-the-box implementations for HAL, Collection+JSON, 
> > > > >> > Siren etc... but you
> > might
> > > > >> find
> > > > >> > that your client-side (Javascript?) widget UI libraries 
> > > > >> > work
> best
> > > with
> > > > >> some
> > > > >> > other more "adhoc" representations.
> > > > >> >
> > > > >> > What these SPI services *don't* allow is for the resources
> defined
> > > by
> > > > RO
> > > > >> > (or their input JSON) to change.  I don't see any 
> > > > >> > particular
> need
> > to
> > > > >> > customize this, though.
> > > > >> >
> > > > >>
> > > > >> I think I saw ContentMappingService being used in ToDoApp. 
> > > > >> Using
> > those
> > > > >> SPIs
> > > > >> would work, however while going through the Spiro framework 
> > > > >> as
> > > discussed
> > > > >> in
> > > > >> the other thread, I saw interesting additional sections in 
> > > > >> the RO
> > spec
> > > > >> v1.1.0 about:
> > > > >>
> > > > >> 34.4 Minimizing Round-trips (x-ro-follow-links)
> > > > >> 34.9 Minimizing Round-trips by supporting table grids
> > > > >>
> > > > >> I had skimmed through RO v1.0.0 before and afaik, those 
> > > > >> weren't
> > there
> > > > yet.
> > > > >> Those sections, especially 34.9, addresses our need.
> > > > >>
> > > > >> 34.2 Sorting (x-ro-sort-by) and 34.3 Pagination (x-ro-page,
> > > > >> x-ro-page-size)
> > > > >> are also nice to haves.
> > > > >>
> > > > >
> > > > >
> > > >
> > >
> >
>


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