URL-Encoding Methodology

General methodology:

Java type	JSON equivalent	UON
Maps/beans	OBJECT	a1=(b1=x1,b2=x2) a1=(b1=(c1=x1,c2=x2))
Collections/arrays	ARRAY	a1=@(x1,x2) a1=@(@(x1,x2),@(x3,x4)) a1=@((b1=x1,b2=x2),(c1=x1,c2=x2))
Booleans	BOOLEAN	a1=true&a2=false
int/float/double/...	NUMBER	a1=123&a2=1.23e1
null	NULL	a1=null
String	STRING	a1=foobar a1='true' a1='null' a1='123' a1=' string with whitespace ' a1='string with ~'escaped~' quotes'

Refer to the UON specification for a complete set of syntax rules.