Interface Selector

All Known Implementing Classes:

Selector.Filter, Selector.Index, Selector.Name, Selector.Slice, Selector.Wildcard

public sealed interface Selector
permits Selector.Name, Selector.Wildcard, Selector.Index, Selector.Slice, Selector.Filter

A selector in a segment (RFC 9535, Section 2.3). A selector selects zero or more children of a node.

Selector	Query text	Selects from {"a": [10, 20, 30]}, at $.a
Selector.Name	$['a'], $.a	the array (from the root)
Selector.Wildcard	$.a[*], $.a.*	10, 20, 30
Selector.Index	$.a[1], $.a[-1]	20; 30
Selector.Slice	$.a[0:2], $.a[::-1]	10, 20; 30, 20, 10
Selector.Filter	$.a[?@ > 15]	20, 30

A selector that does not apply to a node selects nothing. It is not an error. For example, an index selector selects nothing from an object, or from an array that is too short.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static final record	Selector.Filter	A filter selector: ?<logical-expr> (Section 2.3.5).
static final record	Selector.Index	An index selector (Section 2.3.3).
static final record	Selector.Name	A name selector: 'name' or "name" (Section 2.3.1).
static final record	Selector.Slice	An array slice selector: start:end:step (Section 2.3.4).
static final record	Selector.Wildcard	The wildcard selector: * (Section 2.3.2).