Has anyone managed to parse and write JSON in a task in Ant?
I need to parse a json file, modify it and then write it back on disk. I managed to parse it using the rhino engine from JDK 6 but i'm stuck because I don't know how to serialize it back to disk.
It seemes I need a JSON serializer, rhino does not apparently include one.
Recent versions of Rhino should have a JSON object: see this bug that was resolved as fixed in 2010, and the actual class is called NativeJSON and has a stringify method that should let you retrieve a JSON string.
JSON.stringify is available with Rhino 1.7R3 onwards as part of the ECMAScript 5 work.
See: https://developer.mozilla.org/En/New_in_Rhino_1.7R3
Related
I need to deserialize some JSON objects. I tried to use Tiny-json library, but it's too slow. I tried to use Newtonsoft.Json, but it fails in webplayer with this error:
MissingMethodException: Method not found: 'System.Collections.ObjectModel.KeyedCollection.
What JSON parser do you recommend?
You can try one of these open source solutions:
https://github.com/jacobdufault/fullserializer
https://github.com/mtschoen/JSONObject (https://www.assetstore.unity3d.com/en/#!/content/710) I am using this one most of the times, it's versbose but does its job well, not sure about performance however
Or go with paid ones:
https://www.assetstore.unity3d.com/en/#!/content/11347
Unity 5.3 added Native support of Json Serializer. It is faster than others.
JsonUtility.ToJson to convert a class to Json.
JsonUtility.FromJson to convert Json back to class.
For complete example and information regarding json arrays, see
Serialize and Deserialize Json and Json Array in Unity
So there is a nice library for VB6 JSON parsing. HERE
but i actually used one that built on the original and optimized. HERE
Essentially I'm using the parser to deserialize the json i get from a web service. I need to update some values, and resend to the server. Using the Collection/Dictionary objects made it very easy. But now, How do i take those objects and serialize them to a JSON string? is there a library for that?
thanks you for your help.
There are quite a few JSON parser/serializer/DOM classes written in VB6. Perhaps you might want to consider one of those instead. E.g.:
JsonBag, Another JSON Parser/Generator
suppose I have this list in R
x = list(a=1:3,b=8:20)
and I write this to a json file on disk with
library(jsonlite)
cat(toJSON(x),file="f.json")
how can I use the Julia JSON package to read that? Can I?
# Julia
using JSON
JSON.parse("/Users/florianoswald/f.json")
gives a mistake - I guess it expects a json string.
Any alternatives? I would benefit from being able to pass a list (i.e. a nested structure) rather than tabular data. thanks!
If you want to do this with the current version of JSON you can use Julia's readall method to get a string from a file.
Pkg.clone("JSON") will get you the latest development version of JSON.jl (as opposed to the latest released version) – it seems parsefile is not released yet.
I am trying to achieve something like which is mentioned in this link
but i don't know whereto write the parsing code. I tried to write it in new method and added the method in "my adapter.xml" but nothing happens. I even don't know how to log in IBM WorkLight. I used WL.logger(some) but its throwing error that "Logger can not be called on an object".
Any help would be appreciated. Thanks in advance.!
In most cases you don't need to manually parse responses because WL adapter framework will do this for you. Anything you retrieve via WL.Server.invokeHttp API will be parsed to JSON automatically unless you specify returnedContentType:"plain". In case you DO need to manually parse JSON you can use JSON.parse() and JSON.stringify() APIs.
Server side logging is achieved via WL.Logger.debug/error/info etc. You can get more info about it here
You don't have to parse JSON data, there are libraries in Javascript to do that. Try JSON.parse(). You should learning how to write adapters and invoking them from clients. The Getting Started modules are a good place to start, specifically Module 4 in your case.
I am loading data from a mongodb collection to a mysql table through Kettle transformation.
First I extract them using MongodbInput and then I use json input step.
But since json input step has very low performance, I wanted to replace it with a
javacript script.
I am a beginner in Javascript and even though i tried somethings, the kettle javascript script is not recognizing any keywords.
can anyone give me sample code to convert Json data to different columns using javascript?
To solve your problem you need to see three aspects:
Reading from MongoDB
Reading from JSON
Reading from (probably) String
Reading from MongoDB Except if you changed the interface, MongoDB returns not JSON but BSON files (~binary JSON). You need to see the MongoDB documentation about reading and writing BSON: probably something like BSON.to() and BSON.from() but I don't know it by heart.
Reading from JSON Once you have your BSON in JSON format, you can read it using JSON.stringify() which returns a String.
Reading from (probably) String If you want to use the capabilities of JSON (why else would you use JSON?), you also want to use JSON.parse() which returns a JSON object.
My experience is that to send a JSON object from one step to the other, using a String is not a bad idea, i.e. at the end of a JavaScript step, you write your JSON object to a String and at the beginning of the next JavaScript step (can be further down the stream) you parse it back to JSON to work with it.
I hope this answers your question.
PS: writing JavaScript steps requires you to learn JavaScript. You don't have to be a master, but the basics are required. There is no way around it.
you could use the json input step to get the values of this json and put in common rows