Re: Using Groovy 4.0.1 and want to use Groovys JsonSlurper or whatever it might be called in version 4.

Hi Tommy,

I agree: We have often found that using well established Java libraries 
together with the power of the Groovy language works well & makes great 
sense (e.g. Ebean ORM & Vaadin web-GUI in our case).
Groovy's integrated support (for e.g. XML/JSON) is often very dynamic in 
nature, something which we often neither need nor want, and the small 
overhead of writing a thin, type/schema-safe wrapper around e.g. a 
generic Java XML SAX/DOM lib for a specific application case has always 
turned out to be well invested & makes the code better readable and 
easier to refactor.

In addition these Java libs have often been debugged and performance 
optimized over the years in a way that Groovy finds hard to match, since 
it would spread its development manpower very thin.
The command-line parsing library coming with Groovy nowadays is a good 
example of an imho better suited hybrid approach: It supplies Groovy 
goodness over an excellent existing Java library (picocli) G-)

Cheers,
mg



On 10/07/2022 18:03, Tommy Svensson wrote:
> Hi Paul,
>
> Thanks, but after the warning that JSONSlurper can loose order in 
> lists, a known bug, I decided to go with Jackson Jr, which also allows 
> me to parse JSON into a Map structure. But since I'm coding entirely 
> in Groovy using Groovys JSON support would make sense, but the pointed 
> out bug scared me away :-). I have used Jackson Jr before, it works well.
>
> /Tommy
>
>
> Från: Paul King <[email protected]> <mailto:[email protected]>
> Svara: users-GSC0n/0aZo1d/SJB6HiN2Ni2O/[email protected] <users-GSC0n/0aZo1d/SJB6HiN2Ni2O/[email protected]> 
> <mailto:users-GSC0n/0aZo1d/SJB6HiN2Ni2O/[email protected]>, [email protected] 
> <[email protected]> <mailto:[email protected]>
> Datum: 10 juli 2022 at 16:20:43
> Till: users-GSC0n/0aZo1d/SJB6HiN2Ni2O/[email protected] <users-GSC0n/0aZo1d/SJB6HiN2Ni2O/[email protected]> 
> <mailto:users-GSC0n/0aZo1d/SJB6HiN2Ni2O/[email protected]>
> Ämne: Re: Using Groovy 4.0.1 and want to use Groovys JsonSlurper or 
> whatever it might be called in version 4.
>
>> Hi Tommy,
>>
>> I wrote a little blog post that might have some of the information you
>> were missing:
>>
>> https://blogs.apache.org/groovy/entry/parsing-json-with-groovy
>>
>> Perhaps some more of that info belongs in the official documentation.
>>
>> Cheers, Paul.
>>
>> On Fri, Jul 8, 2022 at 9:10 PM Tommy Svensson <[email protected]> wrote:
>> >
>> > Hello Groovy people,
>> >
>> > I have code using org.apache.groovy:groovy:4.0.1 and it builds 
>> without any problems.
>> >
>> > But now I want to use the JSONSlurper and it looks like there is a 
>> new JSONParser also. That however requires groovy-all from googling. 
>> The problem is that there seem to be not groovy-all for version 
>> 4.0.1. Maven completely fails when I add "-all" to "groovy" in my 
>> poms. It will not download the groovy-all file. I deleted 
>> ~/.m2/repository and built again and it downloaded all but groovy-all.
>> >
>> > The JSON stuff is not available in the "groovy" artifact.
>> >
>> > So my question really is, I want to use Groovys JSON features, what 
>> do I need to do to accomplish that ?
>> >
>> > I've completely failed top find any Groovy 4.0 related page other 
>> than the release notes. Since there are big diffs between versions 
>> there must be some page for each version I assume ?
>> >
>> > I found this: https://groovy-lang.org/processing-json.html but it 
>> is not version specific and provides no information on how to get 
>> access to it.
>> >
>> > I'm frustrated. Something seemingly simple turned out to be the 
>> opposite!
>> >
>> > Any help is appreciated.
>> >
>> > Thanks,
>> > Tommy Svensson
>> >
>> >
>> >