Length of array

[dgorkovets]

Is it possible to get length of array?

Source:

{
    "key": ["A", "B", "C"]
}

Target:

{
    "keyLength": 3
}

[milosimpson]

Yes, but only on latest version of Jolt (that does not yet power the demo site).

[
  {
    "operation": "modify-overwrite-beta",
    "spec": {
      "keyLength": "=size(@(1,key))"
    }
  }
]

See

jolt/jolt-core/src/main/java/com/bazaarvoice/jolt/modifier/function/Objects.java

Line 205 in 8745c4c

public static final class size extends Function.BaseFunction<Integer> {

and

jolt/jolt-core/src/main/java/com/bazaarvoice/jolt/Modifier.java

Line 63 in 8745c4c

STOCK_FUNCTIONS.put( "size", new Objects.size() );

The infrastructure that powers the Demo Site (Google App Engine) does not like Java 1.8, which I finally updated Jolt to. So will need to figure out a different hosting provider.

[dgorkovets]

Thanks!

[Dinesh-Rajput]

Thanks! Very Helpful