Good day Dan,
I am going working on option highlighted below .i.e define the
last parameter as a simple string, and then do the parsing of the JSON
server-side within your action. But I am getting the following error.
"invalidReason":"Failed to parse representation as value of type
'String'"},"x-ro-invalidReason":"Basket Item is mandatory"}
JSON Request sent to RO Server
var basketItem= { X:x1, y:y1 };
var basketItemByStop=
{
sessionId : {
id : "sessionId",
memberType : "property",
value : '3432345ADC'
},
customerId : {
id : "customerId",
memberType: "property",
value : '123456'
},
email : {
id : "email",
memberType : "property",
value : "[email protected]"
},
basketItem : {
"id" : "basketItem",
"memberType" : "property",
"format" : "string",
"extensions" : {"x-isis-format" : "string"},
"value" : basketItem
}
};
My action method defintion
@Bookmarkable
@ActionSemantics(Of.IDEMPOTENT)
@MemberOrder(sequence = "1")
@Named("View Basket - rich client")
@PublishedAction
public final ShoppingBasket getBasket(
@Named("Session ID") final String sessionID,
@Named("Customer ID") final String customerID,
@Named("Email") final String email,
@Named("Basket Item") final String newTravelCardDetailsJSON) {
}
The main problem is the newTravelCardDetailsJSON parameter is coming across as
[object object] in the method and using toString() does not convert it to a
normal string.
I need it as a normal human readable json and pass it to my Jackson JSON parser
for further processing.
Please, how to a go about it this. Setting the format in my angular controller
script above is not working.
-----Original Message-----
From: Dan Haywood [mailto:[email protected]]
Sent: Thursday, March 27, 2014 9:45 PM
To: users
Subject: Re: Problem Persisting an entity via Isis
Hi Ola,
Thanks for providing all the info for this query.
The reason that Isis wants an href for the "basketItem" parameter is because RO
only supports the idea of passing a reference to an existing persistent object;
it isn't possible to pass an arbitrary blob of JSON (which is what you are
doing here) and have it be magically transformed server-side into an object.
I was about to say that the suggestion you dismissed - to extend the signature
of the action to include parameters for the values of the basket item - would
be reasonable; but then it occurred to me that probably you want the basket
item to be polymorphic (ie any Object), and so changing the action signature
would prevent this.
So, instead, what you'll need to do is to do two interactions; the first to
create and persist the BasketItem as a server-side object (which will give you
its href) and then secondly to call the action with the href of said BasketItem.
Another possibility, I suppose, is that you define the last parameter as a
simple string, and then do the parsing of the JSON server-side within your
action. That seems rather ugly to me, though. (Perhaps the framework/RO
spec needs better support here to allow pluggable serialization of parameters;
something for me to think about).
Hope that helps, at least a little.
Dan
On 27 March 2014 19:51, Tomoloju, Ola
<[email protected]<mailto:[email protected]>> wrote:
> Hello Dan,
>
> Could you assist with this problem please:
>
> I am having problems persisting an object as a type.
>
> I could pass the properties of the object from the client, then
> compose the object in the method getBasket(...)
>
> But, we need to do things the right way!
>
> Below is the error in my chrome debugger:
>
>
>
> "invalidReason":"Expected a link (because this object's type is not a
> value) but found no 'href'"},"x-ro-invalidReason":"Basket Item is
> mandatory"}
>
>
>
> The operation RO Json:
>
>
> {
> "rel" : "urn:org.restfulobjects:rels/invoke",
> "href" : "
> http://localhost:8080/xxx-webapp-1.0-SNAPSHOT/restful/services/Shoppin
> gBaskets/actions/getBasket/invoke
> ",
> "method" : "POST",
> "type" :
> "application/json;profile=\"urn:org.restfulobjects:repr-types/action-result\"",
> "arguments" : {
> "enterVanNumber" : {
> "value" : null
> },
> "sessionId" : {
> "value" : null
> },
> "customerId" : {
> "value" : null
> },
> "email" : {
> "value" : null
> },
> "basketItem" : {
> "value" : null
> }
> }
>
> Method signature is below:
>
> @Bookmarkable
> @MemberOrder(sequence = "1")
> @Named("View Basket - rich client")
> @PublishedAction
> public final ShoppingBasket getBasket(@Named("Enter Van Number")
> final String vanNumber,
> @Named("Session ID") final String sessionID,
> @Named("Customer ID") final String customerID,
> @Named("Email") final String email,
> @Named("Basket Item") final Object obj) { }
> NB- Object obj is the argument giving me headache!
>
> The implementation of this method casts the obj parameter to a
> specific type for the Basket Item.
>
> In my AngularJS Controller, I am obtaining all the required params to
> compose the Basket Item, but Isis does not like the JSON I am sending
> to the server for the entity.
> Below is the sample JSON sent to the RO server:
>
> var basketItem=
> {
> vanNumber : {
> id : "vanNumber",
> memberType: "property",
> value : '12344456'
> },
> startJourney : {
> id : "startJourney",
> memberType : "property",
> value : 'Watford'
> },
> endJourney : {
> id : "endJourney",
> memberType: "property",
> value : 'Coventry'
> }
> };
>
>
>
> var basketItemToPersist=
> {
> enterVanNumber : {
> id : "enterVanNumber",
> memberType: "property",
> value : $scope.vanNumber
> },
> sessionId : {
> id : "sessionId",
> memberType : "property",
> value : '343234543636hghghgh'
> },
> customerId : {
> id : "customerId",
> memberType: "property",
> value : '123456'
> },
> email : {
> id : "email",
> memberType : "property",
> value :
> "[email protected]<mailto:[email protected]>"
> },
> basketItem : {
> //href:"http://localhost:8080/xxx-1.0-SNAPSHOT/restful/objects/VanItem
> ", ????? I am not sure why Isis expects a href and how to determine
> the href for a non-existing entity
> id : "basketItem",
> memberType :
> "property",
> value : basketItem
> }
> };
>
>
>
> ShoppingBasketFactory.create(basketItemToPersist,
> function(data) {
> //Success Handler
> $scope.success =true;
> },
> function(error) {
> //Error Handler
> $scope.success =false;
> }
> );
>
> Thanks.
>
> OLA TOMOLOJU
>
>
>
