"/a/b" : get the value of "b" by traversing from root to "a" to "b"
"//h" : from root grab any decendants' value with key "h"
Query JSON array
/incomes/* : grab all objects in incomes array
/incomes/*/type : return all income types
Filtering
/incomes/*[frequency = "monthly"]: return incomes that has a frequency value of "monthly"
/expenses/*[value > -400 and value < -200 ]: return expenses that where it's value is between -400 and -200
Built in Functions
Query JSON uses JSXPath behind the scene to perform path querying. Check out the available built-in functions here.
count( /expenses/*[ type = "transport"] ): Count how many transport expenses.
ceiling( /incomes/*[ last() ]/value ): combines both ceiling and last functions to return the rounded up integer value of the last positioned income
sum( /incomes/*[frequency="monthly"]/value ) - abs( sum( /expenses/*[frequency="monthly"]/value ) ): combines both sum and abs functions to get the net income for incomes and expenses that have frequency of "monthly"
Jump to line (v0.1.0)
This feature makes use of vscode symbols to quickly jump to the line of the file that is related to the returned query result
Note:
For large JSON files, this feature may not seem to work as there is a maximum limit imposed by vscode for performance purposes.
You can override the default max value by going into Settings and change the value of json.maxItemsComputed (JSON: Max Items Computed). Reopen the queried file and perform Run Path again.
Result to new file
Once the result is returned in the Query Result view, it can also be viewed in the editor by clicking on the Output button displayed next to the Query Result title.
Known issues:
path expression that starts with functions as top level and have arguments that started with descendants axis are not producing the desired result.
// is not returning any value
path = 'count(//a)'
//workaround until a proper fix is in place
path = 'count(/*//a)'
boolean predicate expressions is not correctly picking up boolean value
// is not picking up boolean value
path = '//a[.=true]'
//workaround until a proper fix is in place
path = '//a[string(.)="true"]'
