7.3 Generic Interface

7.3 Generic Interface🔗ℹ

value
gen:statement : any/c

A generic interface (see Generic Interfaces) that defines a statement. To supply method implementations, a struct should use the #:methods form.

value
statement/c : contract?

TBD

value
statement-constructor/c : contract?

TBD

predicate
(statement? val) → boolean?
val : any/c

TBD

The generic interface gen:statement has the following methods:

method
(get-subject stmt) → subject?
  stmt : statement?
Return the subject component of the statement structure.
method
(get-predicate stmt) → predicate?
  stmt : statement?
Return the predicate component of the statement structure.
method
(get-object stmt) → object?
  stmt : statement?
Return the object component of the statement structure.

predicate
(statement<? v1 v2) → boolean?
v1 : statement?
v2 : statement?

Returns #t if v1 and v2 are statement? values, and v1 is less than v2.

1	Introduction
2	Module name
3	Module resource
4	Module nsname
5	Module nsmap
6	Module literal
7	Module statement
8	Module triple
9	Module graph
10	Module tree
11	Module quad
12	Module dataset
13	Module query
14	Module io
15	Module schema
16	Vocabulary Modules
17	Appendix: Names Defined
	Bibliography
	Index

7.1	Blank Nodes
7.2	Component Predicates
7.3	Generic Interface
7.4	Statement Conversion