Re: [Pharo-dev] Add JSONSchemas to NeoJSON
Henry, You wrote directly to me: > I wish to use JSON for type encoding between different language environments, > currently Squeak and Java. Unfortunately I cannot load the software in Pharo, > at this time. I brought NeoJSON over into my package to work locally, and I > made some changes. As you can see below, I want to use ASN1 Module style > mapping registrations as well as formal schema consumption. I also wish to > use Fuel style substitutions. However, I realize NeoJSON may already have a > substitution mechanism. > > The issue with substitutions while walking a graph of objects, and this is > what Fuel solves (though I looked at an earlier version and do not know how > it does so now) is that the graph needs to connect with proxies, then > resolved into substitutions, so it is three steps: proxy-connect, > substitutions, real-graph-connect. > > The reason I am reaching out, and seeing that this is August you may be on > vacation, is to feel your thoughts out about using JSON Schemas. One issue I > not is that the types get hardcoded and applied to data that has no $ref in > the data. This makes creation of a #anyOf, #allOf, #oneOf difficult as I am > unclear how discrimination occurs. > > I would love to hear your thoughts - I am 95% decided on using JSON. As you probably know, JSON is rather special in its simplicity. The original author refused to add certain elements to its specification, because he knew they would complicate matters too much. Nor does he support any of the large number of extensions that others propose(d). NeoJSON is in the first place a clean/modern implementation of a JSON parser/generator for this specification, specific for Pharo. NeoJSON tries to be as resource (time/space) efficient as possible. Because converting between domain objects and JSON is a frequent requirement, a simple mapping mechanism was added. It avoids intermediate representations. Since JSON is inherently untyped, it is not a very elegant mechanism. Especially in the area of collection/relations, the options are rather limited. Still, I think it has proven useful for many people. Refer to the documentation and unit tests to see what is available. I known very well that many schemes exist, none of these are supported as such. My answer to these feature requests is STON: it has a clean/general/elegant typing mechanism and support for cycles and structure sharing. I prefer to keep JSON very simple. It would certainly be interesting if others would write extensions to NeoJSON, similar to the ideas that you have. As long as it is a clean extension I would be totally OK with that, if necessary I will support small, compatible changes to NeoJSON itself to help you in your implementation efforts. Regards, Sven > On 13 Aug 2017, at 21:04, henry wrote: > > Thank you, Stef. I sent to him email, conditioned on his enjoying his > vacations. > > - HH > > >> Original Message >> Subject: Re: [Pharo-dev] Add JSONSchemas to NeoJSON >> Local Time: August 13, 2017 2:53 PM >> UTC Time: August 13, 2017 6:53 PM >> From: stepharo.s...@gmail.com >> To: henry , Pharo Development List >> >> >> Hi henry >> >> Here is the email of sven Van Caekenberghe >> >> He is probably on vacation else he would have replied. >> This is great if you can extend neoJSON it is a nice and important >> piece of software. >> >> Stef >> >> On Sat, Aug 12, 2017 at 10:04 PM, henry wrote: >> > Is Sven still working on NeoJSON? I want to help expand it to use >> > JSONSchemas. >> > >> > https://spacetelescope.github.io/understanding-json-schema/ >> > >> > I was looking at ASN1Module in Cryptography... >> > >> > - HH >
Re: [Pharo-dev] Add JSONSchemas to NeoJSON
Thank you, Stef. I sent to him email, conditioned on his enjoying his vacations. - HH > Original Message > Subject: Re: [Pharo-dev] Add JSONSchemas to NeoJSON > Local Time: August 13, 2017 2:53 PM > UTC Time: August 13, 2017 6:53 PM > From: stepharo.s...@gmail.com > To: henry , Pharo Development List > > > Hi henry > > Here is the email of sven Van Caekenberghe > > He is probably on vacation else he would have replied. > This is great if you can extend neoJSON it is a nice and important > piece of software. > > Stef > > On Sat, Aug 12, 2017 at 10:04 PM, henry wrote: >> Is Sven still working on NeoJSON? I want to help expand it to use >> JSONSchemas. >> >> https://spacetelescope.github.io/understanding-json-schema/ >> >> I was looking at ASN1Module in Cryptography... >> >> - HH
Re: [Pharo-dev] Add JSONSchemas to NeoJSON
+1 Doru > On Aug 13, 2017, at 8:53 PM, Stephane Ducasse wrote: > > Hi henry > > Here is the email of sven Van Caekenberghe > > He is probably on vacation else he would have replied. > This is great if you can extend neoJSON it is a nice and important > piece of software. > > Stef > > On Sat, Aug 12, 2017 at 10:04 PM, henry wrote: >> Is Sven still working on NeoJSON? I want to help expand it to use >> JSONSchemas. >> >> https://spacetelescope.github.io/understanding-json-schema/ >> >> I was looking at ASN1Module in Cryptography... >> >> - HH > -- www.tudorgirba.com www.feenk.com “The smaller and more pervasive the hardware becomes, the more physical the software gets."
Re: [Pharo-dev] Add JSONSchemas to NeoJSON
Hi henry Here is the email of sven Van Caekenberghe He is probably on vacation else he would have replied. This is great if you can extend neoJSON it is a nice and important piece of software. Stef On Sat, Aug 12, 2017 at 10:04 PM, henry wrote: > Is Sven still working on NeoJSON? I want to help expand it to use > JSONSchemas. > > https://spacetelescope.github.io/understanding-json-schema/ > > I was looking at ASN1Module in Cryptography... > > - HH
Re: [Pharo-dev] Add JSONSchemas to NeoJSON
Hello Esteban, Do you have Sven's email? I would like to discuss with him. I am currently considering combining ASN1 Modules, Fuel substitution and NeoJSON encoding. It is some work. Regards, - HH > Original Message > Subject: Re: [Pharo-dev] Add JSONSchemas to NeoJSON > Local Time: August 12, 2017 6:13 PM > UTC Time: August 12, 2017 10:13 PM > From: emaring...@gmail.com > To: henry , Pharo Development List > > > Sven is still the developer and maintaner of NeoJSON. > > It would be nice to have JSON Schemas in NeoJSON. You could abort the > read of a stream if the schema is invalid, without > having to build the whole object tree or to parse the whole stream. > > Regards! > > Esteban A. Maringolo > > 2017-08-12 17:04 GMT-03:00 henry : >> Is Sven still working on NeoJSON? I want to help expand it to use >> JSONSchemas. >> >> https://spacetelescope.github.io/understanding-json-schema/ >> >> I was looking at ASN1Module in Cryptography... >> >> - HH
Re: [Pharo-dev] Add JSONSchemas to NeoJSON
To be honest, I looked at Fuel, but it has changed: I can't find the FLDecoder. I had hoped such a framework could switch to JSon encoding, as the substitution framework is robust. I do not know if it's feasible. - HH On Sat, Aug 12, 2017 at 19:09, henry wrote: > I also need callbacks for substituation during encoding, SAX-like. I think > custom mapping of NeoJSON does this, with clusters. But I am unsure. > > - HH > > On Sat, Aug 12, 2017 at 19:07, henry wrote: > >> I would like to help bring JSON Schemas to NeoJSON. I need that ability. >> >> - HH >> >> On Sat, Aug 12, 2017 at 18:13, Esteban A. Maringolo >> wrote: >> >>> Sven is still the developer and maintaner of NeoJSON. It would be nice to >>> have JSON Schemas in NeoJSON. You could abort the read of a stream if the >>> schema is invalid, without having to build the whole object tree or to >>> parse the whole stream. Regards! Esteban A. Maringolo 2017-08-12 17:04 >>> GMT-03:00 henry : > Is Sven still working on NeoJSON? I want to help expand >>> it to use > JSONSchemas. > > >>> https://spacetelescope.github.io/understanding-json-schema/ > > I was >>> looking at ASN1Module in Cryptography... > > - HH @callistohouse.club>
Re: [Pharo-dev] Add JSONSchemas to NeoJSON
I also need callbacks for substituation during encoding, SAX-like. I think custom mapping of NeoJSON does this, with clusters. But I am unsure. - HH On Sat, Aug 12, 2017 at 19:07, henry wrote: > I would like to help bring JSON Schemas to NeoJSON. I need that ability. > > - HH > > On Sat, Aug 12, 2017 at 18:13, Esteban A. Maringolo > wrote: > >> Sven is still the developer and maintaner of NeoJSON. It would be nice to >> have JSON Schemas in NeoJSON. You could abort the read of a stream if the >> schema is invalid, without having to build the whole object tree or to parse >> the whole stream. Regards! Esteban A. Maringolo 2017-08-12 17:04 GMT-03:00 >> henry : > Is Sven still working on NeoJSON? I want to help expand it to use >> > JSONSchemas. > > >> https://spacetelescope.github.io/understanding-json-schema/ > > I was >> looking at ASN1Module in Cryptography... > > - HH @callistohouse.club>
Re: [Pharo-dev] Add JSONSchemas to NeoJSON
I would like to help bring JSON Schemas to NeoJSON. I need that ability. - HH On Sat, Aug 12, 2017 at 18:13, Esteban A. Maringolo wrote: > Sven is still the developer and maintaner of NeoJSON. It would be nice to > have JSON Schemas in NeoJSON. You could abort the read of a stream if the > schema is invalid, without having to build the whole object tree or to parse > the whole stream. Regards! Esteban A. Maringolo 2017-08-12 17:04 GMT-03:00 > henry : > Is Sven still working on NeoJSON? I want to help expand it to use > > JSONSchemas. > > https://spacetelescope.github.io/understanding-json-schema/ > > > I was looking at ASN1Module in Cryptography... > > - HH > @callistohouse.club>
Re: [Pharo-dev] Add JSONSchemas to NeoJSON
Sven is still the developer and maintaner of NeoJSON. It would be nice to have JSON Schemas in NeoJSON. You could abort the read of a stream if the schema is invalid, without having to build the whole object tree or to parse the whole stream. Regards! Esteban A. Maringolo 2017-08-12 17:04 GMT-03:00 henry : > Is Sven still working on NeoJSON? I want to help expand it to use > JSONSchemas. > > https://spacetelescope.github.io/understanding-json-schema/ > > I was looking at ASN1Module in Cryptography... > > - HH
[Pharo-dev] Add JSONSchemas to NeoJSON
Is Sven still working on NeoJSON? I want to help expand it to use JSONSchemas. https://spacetelescope.github.io/understanding-json-schema/ I was looking at ASN1Module in Cryptography... - HH
