Hashcode calculation in Javascript Step or UDJC

[ccverak]

I got to calculate programmatically the same hashcode value as generated dimension one created by the combination lookup update step (CLU) (Use hashcode? option)
I have a doubt,
In kettle 4.1.0 hashcode of CLU calculation its done by using Arrays.hashcode or oldXORHashCode method??

I've tried this but it doesn't work
import java.util.Arrays;
public boolean processRow(StepMetaInterface smi, StepDataInterface sdi) throws KettleException
{
Object[] r = getRow();
if (r == null) {
setOutputDone();
return false;
}


if (first)
{
first = false;
}
r = createOutputRow(r, getInputRowMeta().size());

Long id = get(Fields.In, "id").getInteger(r);
String level1 = get(Fields.In, "level_1").getString(r);
String level2 = get(Fields.In, "level_2").getString(r);
String level3 = get(Fields.In, "level_3").getString(r);
String level4 = get(Fields.In, "level_4").getString(r);
get(Fields.Out, "hashcode").setValue(r,new Long(Arrays.hashCode(new Object []{id, level1, level2, level3, level4})));


// Send the row on to the next step.
putRow(data.outputRowMeta, r);
return true;
}

PS: sorry about my english