Forum OpenACS Development: Re: From database to JSON

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16: Re: From database to JSON (response to 11)
Posted by Neophytos Demetriou on 09/28/23 06:21 PM
Can you provide an example where tDOM fails to parse a valid JSON?

Please download this file: https://raw.githubusercontent.com/stripe/openapi/master/openapi/spec3.json

and then run:


package require tdom
set fp [open "spec3.json"]
set data [read $fp]
close $fp
puts [time "dom parse -json $data test" 1

I get: error "JSON syntax error" at position 15

tjson runs fine with it:


package require tjson
set fp [open "spec3.json"]
set data [read $fp]
close $fp
puts [time "::tjson::parse $data" 1]

=> 18316 microseconds for tjson

It's probably something that I am doing wrong. Please let me know if you have better luck with it.

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17: Re: From database to JSON (response to 16)
Posted by Antonio Pisano on 09/29/23 01:12 AM

Hi Neophytos,

I have tried the following on my test vanilla instance:

set fp [open "/tmp/spec3.json" r]
set data [read $fp]
close $fp
lappend results [time {dom parse -json $data test} 1] [$test asJSON]

And the result was:

{23639 microseconds per iteration} {{"components":{"schemas":... (truncated)

The problem was the double quotes in

"dom parse -json $data test"

the $data JSON is expanded into the command string and won't be valid anymore.

Ciao

Antonio