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Posted to user@cayenne.apache.org by "Pipes, David" <dp...@AimNTLS.com> on 2011/09/01 16:00:59 UTC
What JSON library are you using with cayenne?
What are you all using for your JSON library with cayenne? I am looking for some feedback on what works well out of the box or with little work. I can't seem to find a good JSON library that works well with cayenne and db2 on an as400. My initial research pointed me to GSON (Google JSON library). This worked amazingly well right out of the box on my local server (windows). Once we added it to our production server on the 400 it didn't seem to work. Then I tried JACKSON. It looked promising but not easily configurable with parent child relationships in cayenne with circlular references.
So, I'm looking for one of two things here. What libraries are you using or has anyone had success with GSON on the as400? I would prefer to use GSON for its simplicity but am also welcoming feedback on both.
Thanks.
Re: What JSON library are you using with cayenne?
Posted by Christian Grobmeier <gr...@gmail.com>.
Hello
> private String getJsonExample(){
> Gson gson = new Gson();
> List<Webdvcr> test = Webdvcr.getDvcrByUnitNum("502");
> // returns a Webdvcr object that is extended from CayenneDataObject
> return gson.toJson(test);
> }
>
> In this example with GSON it works perfect and this is what I'm trying to get yours to do. getDvcrByUnitNum is a method in the class that extends my "_Webdvcr" class. Now what I am asking is it possible with your jjson to replicate the above code without using annotations? Or if it can't how could I replicate it using annotations. I thought I had them set correctly but it only returned "[,]" as the value.
The easiest way is using Annotations.
Did you use @JSON on class level too? Sounds like you missed that. Fore xample:
@JSON
public class Webdvcr extends _Webdvcr {
@JSON List<Webdvcr> getDvcrByUnitNum(String s) {};
}
The code would then look like:
private String getJsonExample() {
JSONAnnotationEncoder encoder = new JSONAnnotationEncoder();
List<Webdvcr> test = Webdvcr.getDvcrByUnitNum("502");
return encoder.encode(test);
}
Please let me know if that worked for you.
Cheers
Christian
>
> Thanks.
>
>
> -----Original Message-----
> From: Christian Grobmeier [mailto:grobmeier@gmail.com]
> Sent: Thursday, September 01, 2011 10:20 AM
> To: user@cayenne.apache.org
> Subject: Re: What JSON library are you using with cayenne?
>
> Hello David,
>
> On Thu, Sep 1, 2011 at 4:00 PM, Pipes, David <dp...@aimntls.com> wrote:
>> What are you all using for your JSON library with cayenne? I am looking for some feedback on what works well out of the box or with little work. I can't seem to find a good JSON library that works well with cayenne and db2 on an as400. My initial research pointed me to GSON (Google JSON library). This worked amazingly well right out of the box on my local server (windows). Once we added it to our production server on the 400 it didn't seem to work. Then I tried JACKSON. It looked promising but not easily configurable with parent child relationships in cayenne with circlular references.
>>
>> So, I'm looking for one of two things here. What libraries are you using or has anyone had success with GSON on the as400? I would prefer to use GSON for its simplicity but am also welcoming feedback on both.
>
> actually I always had problems with the other JSON libs out there, so I wrote my own:
> http://code.google.com/p/jjson/
> It uses plain Java without dependencies, so you have a good chance to make it work on AS400.
>
> You can use the @JSON annotations on the properties you want to expose as JSON. I use the classes for it which extend the _UnderScoreClases, overwrite and annotate the getters. This worked pretty well for me.
>
> Let me know if I can help more
>
> Cheers
>
--
http://www.grobmeier.de
RE: What JSON library are you using with cayenne?
Posted by "Pipes, David" <dp...@AimNTLS.com>.
Hello Christian, That's for this information. I downloaded your jjson code and was testing it a bit. I was looking for something that I didn't have to use annotations with (personal dislike or annotations). It seems to work great for the test cases from the source. But I am unable to get it to work with my current CayenneDataObject classes with or without annotations.
Here is an example of what I mean.
private String getJsonExample(){
Gson gson = new Gson();
List<Webdvcr> test = Webdvcr.getDvcrByUnitNum("502");
// returns a Webdvcr object that is extended from CayenneDataObject
return gson.toJson(test);
}
In this example with GSON it works perfect and this is what I'm trying to get yours to do. getDvcrByUnitNum is a method in the class that extends my "_Webdvcr" class. Now what I am asking is it possible with your jjson to replicate the above code without using annotations? Or if it can't how could I replicate it using annotations. I thought I had them set correctly but it only returned "[,]" as the value.
Thanks.
-----Original Message-----
From: Christian Grobmeier [mailto:grobmeier@gmail.com]
Sent: Thursday, September 01, 2011 10:20 AM
To: user@cayenne.apache.org
Subject: Re: What JSON library are you using with cayenne?
Hello David,
On Thu, Sep 1, 2011 at 4:00 PM, Pipes, David <dp...@aimntls.com> wrote:
> What are you all using for your JSON library with cayenne? I am looking for some feedback on what works well out of the box or with little work. I can't seem to find a good JSON library that works well with cayenne and db2 on an as400. My initial research pointed me to GSON (Google JSON library). This worked amazingly well right out of the box on my local server (windows). Once we added it to our production server on the 400 it didn't seem to work. Then I tried JACKSON. It looked promising but not easily configurable with parent child relationships in cayenne with circlular references.
>
> So, I'm looking for one of two things here. What libraries are you using or has anyone had success with GSON on the as400? I would prefer to use GSON for its simplicity but am also welcoming feedback on both.
actually I always had problems with the other JSON libs out there, so I wrote my own:
http://code.google.com/p/jjson/
It uses plain Java without dependencies, so you have a good chance to make it work on AS400.
You can use the @JSON annotations on the properties you want to expose as JSON. I use the classes for it which extend the _UnderScoreClases, overwrite and annotate the getters. This worked pretty well for me.
Let me know if I can help more
Cheers
Re: What JSON library are you using with cayenne?
Posted by Christian Grobmeier <gr...@gmail.com>.
Hello David,
On Thu, Sep 1, 2011 at 4:00 PM, Pipes, David <dp...@aimntls.com> wrote:
> What are you all using for your JSON library with cayenne? I am looking for some feedback on what works well out of the box or with little work. I can't seem to find a good JSON library that works well with cayenne and db2 on an as400. My initial research pointed me to GSON (Google JSON library). This worked amazingly well right out of the box on my local server (windows). Once we added it to our production server on the 400 it didn't seem to work. Then I tried JACKSON. It looked promising but not easily configurable with parent child relationships in cayenne with circlular references.
>
> So, I'm looking for one of two things here. What libraries are you using or has anyone had success with GSON on the as400? I would prefer to use GSON for its simplicity but am also welcoming feedback on both.
actually I always had problems with the other JSON libs out there, so
I wrote my own:
http://code.google.com/p/jjson/
It uses plain Java without dependencies, so you have a good chance to
make it work on AS400.
You can use the @JSON annotations on the properties you want to expose
as JSON. I use the classes for it which extend the _UnderScoreClases,
overwrite and annotate the getters. This worked pretty well for me.
Let me know if I can help more
Cheers