delete-db
test-db [
- create-node-table create-arc-table
+ node create-table arc create-table
[ 1 ] [ "first node" create-node ] unit-test
[ 2 ] [ "second node" create-node ] unit-test
[ 3 ] [ "third node" create-node ] unit-test
[ 4 ] [ f create-node ] unit-test
[ 5 ] [ 1 2 3 create-arc ] unit-test
-] with-db
-
-delete-db
+] with-db delete-db
test-db [
init-semantic-db
[ 7 ] [ "has parent" context get relation-id ] unit-test
[ "has parent" ] [ "has parent" context get relation-id node-content ] unit-test
[ "test content" ] [ context get node-content ] unit-test
- ! type-type 1array [ "type" ensure-type ] unit-test
- ! [ { 1 2 3 } ] [ type-type select-nodes-of-type ] unit-test
- ! [ 1 ] [ type-type select-node-of-type ] unit-test
- ! [ t ] [ "content" ensure-type integer? ] unit-test
- ! [ t ] [ "content" ensure-type "content" ensure-type = ] unit-test
- ! [ t ] [ "content" ensure-type "first content" create-node-of-type integer? ] unit-test
- ! [ t ] [ "content" ensure-type select-node-of-type integer? ] unit-test
- ! [ t ] [ "content" ensure-type "first content" select-node-of-type-with-content integer? ] unit-test
- ! [ t ] [ "content" ensure-type "first content" ensure-node-of-type integer? ] unit-test
- ! [ t ] [ "content" ensure-type "second content" ensure-node-of-type integer? ] unit-test
- ! [ 2 ] [ "content" ensure-type select-nodes-of-type length ] unit-test
-] with-db
-
-delete-db
+] with-db delete-db
! test hierarchy
test-db [
[ "fran" { "charlie" } ] [ "fran" get has-parent-relation get get-node-hierarchy dup tree-id node-content swap tree-children [ tree-id node-content ] map ] unit-test
[ { "adam" "eve" } ] [ "charlie" get has-parent-relation get get-root-nodes [ node-content ] map natural-sort >array ] unit-test
[ { } ] [ "fran" get "charlie" get tuck has-parent-relation get un-parent-child has-parent-relation get parents [ node-content ] map ] unit-test
-] with-db
+] with-db delete-db
+
+RELATION: test-relation
+
+test-db [
+ init-semantic-db
+ [ 5 ] [ test-relation ] unit-test
+] with-db delete-db
-delete-db
! Copyright (C) 2008 Alex Chapman
! See http://factorcode.org/license.txt for BSD license.
-USING: accessors arrays continuations db db.tuples db.types db.sqlite hashtables kernel math math.parser namespaces new-slots sequences sequences.deep sequences.lib ;
+USING: accessors arrays combinators.cleave continuations db db.tuples db.types db.sqlite hashtables kernel math math.parser namespaces new-slots parser sequences sequences.deep sequences.lib words ;
IN: semantic-db
TUPLE: node id content ;
{ "content" "content" TEXT }
} define-persistent
-: create-node-table ( -- )
- node create-table ;
-
: delete-node ( node-id -- )
<id-node> delete-tuple ;
: create-arc ( subject object relation -- arc-id )
<arc> dup insert-arc id>> ;
+: has-arc? ( subject object relation -- ? )
+ <arc> select-tuples length 0 > ;
+
+: select-arcs ( subject object relation -- arcs )
+ <arc> select-tuples ;
+
+: select-arc-ids ( subject object relation -- arc-ids )
+ select-arcs [ id>> ] map ;
+
+: select-arc-subjects ( subject object relation -- subject-ids )
+ select-arcs [ subject>> ] map ;
+
+: select-arc-objects ( subject object relation -- object-ids )
+ select-arcs [ object>> ] map ;
+
+: delete-arcs ( subject object relation -- )
+ select-arcs [ id>> delete-arc ] each ;
+
+: subject-relation ( subject relation -- subject object relation )
+ f swap ;
+
+: object-relation ( object relation -- subject object relation )
+ f -rot ;
+
arc "arc"
{
{ "id" "id" INTEGER +assigned-id+ } ! foreign key to node table?
{ "object" "object" INTEGER +not-null+ }
} define-persistent
-: create-arc-table ( -- ) arc create-table ;
-
: create-bootstrap-nodes ( -- )
"semantic-db" create-node drop
- "has context" create-node drop ;
+ "has-context" create-node drop ;
-: semantic-db-context 1 ;
+: semantic-db-context 1 ;
: has-context-relation 2 ;
: create-bootstrap-arcs ( -- )
has-context-relation semantic-db-context has-context-relation create-arc drop ;
: init-semantic-db ( -- )
- create-node-table create-arc-table create-bootstrap-nodes create-bootstrap-arcs ;
+ node create-table
+ arc create-table
+ create-bootstrap-nodes create-bootstrap-arcs ;
: param ( value key type -- param )
swapd 3array ;
f f <simple-statement> [ do-bound-query ] with-disposal
[ first string>number ] map ;
+: ensure1 ( x quot1 quot2 -- y )
+ #! quot1 ( x -- y/f ) tries to find an existing y
+ #! quot2 ( x -- y ) creates a new y if quot1 returns f
+ >r dupd call [ nip ] r> if* ;
+
: ensure2 ( x y quot1 quot2 -- z )
- #! quot1 ( x y -- z/f ) finds an existing z
+ #! quot1 ( x y -- z/f ) tries to find an existing z
#! quot2 ( x y -- z ) creates a new z if quot1 returns f
>r >r 2dup r> call [ 2nip ] r> if* ;
+! contexts:
+! - a node n is a context iff there exists a relation r such that r has context n
: create-context ( context-name -- context-id ) create-node ;
+: get-context ( context-name -- context-id/f )
+ [
+ ":name" TEXT param ,
+ has-context-relation ":has_context" INTEGER param ,
+ ] { } make
+ "select distinct n.id from node n, arc a where n.content = :name and a.relation = :has_context and a.object = n.id"
+ single-int-results ?first ;
+
+: context-id ( context-name -- context-id )
+ [ get-context ] [ create-context ] ensure1 ;
+
! relations:
! - have a context in context 'semantic-db'
: relation-id ( relation-name context-id -- relation-id )
[ get-relation ] [ create-relation ] ensure2 ;
+! RELATION: is-fooey
+! - define a word is-fooey in the current vocab (foo), that when called:
+! - finds or creates a node called "is-fooey" with context "foo", and returns its id
+: RELATION:
+ CREATE-WORD dup [ word-name ] [ word-vocabulary ] bi
+ [ context-id relation-id ] 2curry define ; parsing
+
! hierarchy
TUPLE: tree id children ;
C: <tree> tree
-: parent-child ( parent child has-parent-relation -- arc-id ) swapd create-arc ;
+: parent-child ( parent child has-parent-relation -- arc-id )
+ swapd create-arc ;
: un-parent-child ( parent child has-parent-relation -- )
- swapd <arc> select-tuples [ id>> delete-arc ] each ;
-
-: child-arcs ( parent-id has-parent-relation -- child-arcs )
- f -rot <arc> select-tuples ;
+ swapd delete-arcs ;
: children ( node-id has-parent-relation -- children )
- child-arcs [ subject>> ] map ;
-
-: parent-arcs ( node-id has-parent-relation -- parent-arcs )
- f swap <arc> select-tuples ;
+ object-relation select-arc-subjects ;
: parents ( node-id has-parent-relation -- parents )
- parent-arcs [ object>> ] map ;
+ subject-relation select-arc-objects ;
: get-node-hierarchy ( node-id has-parent-relation -- tree )
2dup children >r [ get-node-hierarchy ] curry r> swap map <tree> ;
(get-root-nodes) flatten prune ;
! sets
-
-: in-set* ( set member in-set-relation -- arc-id ) swapd create-arc ;
-
-: in-set? ( set member in-set-relation -- ? )
- swapd <arc> select-tuples length 0 > ;
-
+: in-set ( member set in-set-relation -- arc-id ) create-arc ;
+: in-set? ( member set in-set-relation -- ? ) has-arc? ;
: set-members ( set in-set-relation -- members )
- f -rot <arc> select-tuples [ id>> ] map ;
+ object-relation select-arc-subjects ;
+
+! attributes
+: has-attribute ( node value has-attribute-relation -- arc-id ) create-arc ;
+: has-attribute? ( node value has-attribute-relation -- ? ) has-arc? ;
+: nodes-with-attribute ( value has-attribute-relation -- node-ids )
+ object-relation select-arc-subjects ;