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grafito.art
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#!/usr/bin/env arturo
;========================================================
; Grafito
;
; SQLite-based Graph Database
; in Arturo
;--------------------------------------------------------
;; name: grafito
;; version: 0.2.12
;; author: drkameleon
;; website: « https://github.com/arturo-lang/grafito
;; category: database
;; embed: [
;; "ui" "sql"
;; ".art" ".sql" ".html" ".less" ".js"
;; ]
;========================================================
;--------------------------
; The main library
;--------------------------
Grafito: #[
; version
Version: 0.2.12
; configuration
Debug?: false
verbose?: true
caseSensitive?: true
; colors
Palette: ""
]
;
; Define custom objects
;--------------------------
define :edgeFilter [direction, content, properties]
;----------------------------------------------
graph: function [
dbpath :string :null
body :block
][
;; description: « initiate a new graph environment with given name and body
;; options: [
;; create: « recreate database from scratch, even if it exists
;; case: « queries should be case-sensitive
;; verbose: « show messages regarding database operations
;; palette: :string :literal « select color palette (current: default)
;; ]
;; returns: :any
;; example: {
;; graph "mydb" [
;; ; do sth with this graph database
;; ]
;; ..........
;; ; in memory database
;; graph ø [
;; ; do sth with this graph database
;; ]
;; }
;==========================================
; CONSTANTS
;==========================================
; Global SQL scripts
schemaSQL: split.by:";" read.file ./"sql/schema.sql"
createNodeSQL: read.file ./"sql/procs/createNode.sql"
updateNodeSQL: read.file ./"sql/procs/updateNode.sql"
updateNodePropertySQL: read.file ./"sql/procs/updateNodeProperty.sql"
updateNodePropertiesSQL: read.file ./"sql/procs/updateNodeProperties.sql"
deleteNodeSQL: read.file ./"sql/procs/deleteNode.sql"
deleteNodeEdgesSQL: read.file ./"sql/procs/deleteNodeEdges.sql"
getNodeSQL: read.file ./"sql/procs/getNode.sql"
getRelatedNodesSQL: read.file ./"sql/procs/getRelatedNodes.sql"
getMaxNodeIdSQL: read.file ./"sql/procs/getMaxNodeId.sql"
createEdgeSQL: read.file ./"sql/procs/createEdge.sql"
updateEdgeSQL: read.file ./"sql/procs/updateEdge.sql"
deleteEdgeSQL: read.file ./"sql/procs/deleteEdge.sql"
deleteEdgeByIdSQL: read.file ./"sql/procs/deleteEdgeById.sql"
fetchNodesSQL: read.file ./"sql/procs/fetchNodes.sql"
fetchNodesWithEdgesSQL: read.file ./"sql/procs/fetchNodes.withEdges.sql"
countNodesSQL: read.file ./"sql/procs/countNodes.sql"
countEdgesSQL: read.file ./"sql/procs/countEdges.sql"
; Global SQL filters
hasEdgeFilter: read.file ./"sql/filters/hasEdge.sql"
hasPropertyFilter: read.file ./"sql/filters/hasProperty.sql"
edgeWithTargetFilter: read.file ./"sql/filters/edgeWithTarget.sql"
edgeWithSourceFilter: read.file ./"sql/filters/edgeWithSource.sql"
edgeWithAnyFilter: read.file ./"sql/filters/edgeWithAny.sql"
edgeWithPropertiesFilter: read.file ./"sql/filters/edgeWithProperties.sql"
nodePropertyWithValueFilter: read.file ./"sql/filters/nodePropertyWithValue.sql"
edgePropertyWithValueFilter: read.file ./"sql/filters/edgePropertyWithValue.sql"
; Global SQL pragmas
caseInsensitiveLikePragma: read.file ./"sql/pragmas/caseInsensitiveLike.sql"
caseSensitiveLikePragma: read.file ./"sql/pragmas/caseSensitiveLike.sql"
; Global UI template
app: read.file ./"ui/index.html"
; Color palettes
; for graph nodes
colorPalettes: #.raw flatten.once map list ./"ui/palettes" 'pal [
@[extract.filename pal, as.data pal]
]
;==========================================
; HELPERS
;==========================================
;
; Perform query
;--------------------------
performQuery: function [ctx, qu, params][
if and? [Grafito\Debug?][null? attr 'noDebug] [
context: to :string ctx
prepend: " | "
print color.bold #gray ">: " ++ context
queryString: qu
if block? qu [
queryString: join.with:"\n" qu
]
print color #gray prepend ++ join.with:"\n"++prepend split.lines queryString
inspect params
print ""
]
(not? null? params)? [
query db .with: params qu
][
query db qu
]
]
;
; Print message
;--------------------------
printDebug: function [msg][
print color #cyan ":: " ++ msg
]
;
; Format size
;--------------------------
formatSize: function [sz][
if sz < 1024 -> return sz
if sz < 1024*1024 -> return sz --> 'kB
if sz < 1024*1024*1024 -> return sz --> 'MB
if sz < 1024*1024*1024*1024 -> return sz --> 'GB
return @[]
]
;
; Get db analytics
;--------------------------
analytics: function [][
nodeCount: to :integer first first performQuery 'analytics countNodesSQL ø
edgeCount: to :integer first first performQuery 'analytics countEdgesSQL ø
avgDegree: edgeCount // nodeCount
filename: dbPath
filesize: 0
if not? empty? filename [
prefilesize: formatSize volume filename
filesize: #[
number: to :string scalar prefilesize
units: to :string units prefilesize
]
]
prememory: formatSize process\memory\occupied
mem: #[
number: to :string scalar prememory
units: to :string units prememory
]
return #[
database: #[
nodes: nodeCount
edges: edgeCount
degree: to :floating to :string .format: ".2f" avgDegree
]
memory: mem
disk: #[
path: filename
size: filesize
]
]
]
;
; Get suitable fg color
; depending on node bg
; for better contrast
;--------------------------
idealForeground: function [back][
rgbs: values extract back
lrgbs: map rgbs 'rgb [
C: rgb // 255
(C =< 0.03928)? -> C: C // 12.92
-> C: ((C+0.055)//1.055) ^ 2.4
C
]
L: (lrgbs\0*0.2126) + (lrgbs\1*0.7152) + (lrgbs\2*0.0722)
if L > 0.189 [ return #black ]
return #white
]
;
; Safe SQLite-compatible
; value codification
; including Unicode strings
;--------------------------
codifySafe: function [val][
(string? val)? [
return {"} ++ (escape.json val) ++ {"}
][
return as.code val
]
]
;
; Get styled node
; ready for use in the
; graph view
;--------------------------
styleNode: function [nodeId, nodeTag, nodeProps][
if not? key? Grafito\nodeColors nodeTag [
cpal: Grafito\Palette
cpal: colorPalettes\[cpal]
nodeColor: sample cpal
existingColors: map values Grafito\nodeColors => first
while [contains? existingColors nodeColor] ->
nodeColor: sample cpal
Grafito\nodeColors\[nodeTag]: @[
nodeColor
idealForeground nodeColor
]
updateMeta 'colors Grafito\nodeColors
]
bg: to :string Grafito\nodeColors\[nodeTag]\0
fg: to :string Grafito\nodeColors\[nodeTag]\1
nodeLabel: first values nodeProps
highlightField: #[
border: as.code darken to :color bg 0.2
background: bg
]
return #[
id: to :integer nodeId
tag: nodeTag
properties: nodeProps
label: truncate nodeLabel 10
fullLabel: nodeLabel
color: #[
border: bg
background: bg
hover: bg
highlight: highlightField
]
font: #[
color: fg
]
]
]
;
; Create new edge
;--------------------------
edge: function [
src :integer :dictionary
name :literal :string
tgt :integer :dictionary
][
;; description: « create edge from source to target node with given name
;; returns: :dictionary
srcId: src
tgtId: tgt
props: (attr "") ?? #[]
unless dictionary? props -> props: # props
if dictionary? srcId -> srcId: src\id
if dictionary? tgtId -> tgtId: tgt\id
edgeId: performQuery.id 'edge createEdgeSQL @[name, write.compact.json ø props, srcId, tgtId]
#[
id: edgeId
tag: name
properties: props
source: src
target: tgt
]
]
;
; Delete existing edge
;--------------------------
unedge: function [
src :integer
name :literal :string
tgt :integer
][
;; description: « delete edge from source to target node with given name
performQuery 'unedge deleteEdgeSQL @[name, src, tgt]
]
;
; Delete existing edge
; by id
;--------------------------
unedgeById: function [
eid :integer
][
;; description: « delete edge with given id
performQuery 'unedgeById deleteEdgeByIdSQL @[eid]
]
;
; Update single property
; by id
;--------------------------
editProperty: function [
nid :integer
prop :literal :string
val :any
][
;; description: « set or update single node property
performQuery 'editProperty updateNodePropertySQL @[~"$.|prop|", write.compact.json ø val, nid]
]
;
; Update meta value
;--------------------------
updateMeta: function [
prop :literal :string
val :any
][
;; description: « update a single meta value
editProperty 1 prop val
]
;
; Re-tag existing edge
; by id
;--------------------------
retagEdge: function [
eid :integer
tag :literal :string
][
;; description: « update edge with given tag
performQuery 'retag updateEdgeSQL @[tag, eid]
]
;
; Get node with properties
; from ID
;--------------------------
nodeFromId: function [nid][
results: performQuery 'nodeFromId getNodeSQL @[nid]
if empty? results ->
return ø
return #[
id: nid
tag: first first results
properties: read.json last first results
]
]
;
; Get nodeset
; for graph visualization
;--------------------------
nodeFromIds: function [nodes][
nodeset: nodes
if not? block? nodeset ->
nodeset: @[nodeset]
nodeElements: map nodeset 'nd -> styleNode nd\id nd\tag nd\properties
edgeElements: new []
loop nodeset [nd][
rezu: performQuery 'nodeFromIds getRelatedNodesSQL @[nd\id, nd\id, nd\id]
loop rezu [rez][
'nodeElements ++ styleNode rez\0 rez\1 read.json rez\2
'edgeElements ++ #[
id: ~"|rez\3|+|rez\4|+|rez\5|"
dbId: rez\6
label: rez\5
properties: read.json rez\7
from: to :integer rez\3
to: to :integer rez\4
]
]
]
unique 'nodeElements
unique 'edgeElements
return #[
nodes: nodeElements
edges: edgeElements
]
]
;
; Generate access helper
;--------------------------
generateHelper: function [id,block][
(not? null? attr 'new)? [
put id block
][
fetch id block
]
]
;==========================================
; REPL
;==========================================
;
; Switch verbosity on/off
;--------------------------
verbose: function [] [
Grafito\verbose?: not? Grafito\verbose?
]
;==========================================
; METHODS
;==========================================
;
; Create new node
;--------------------------
put: function [
name :literal :string
attributes :string :block :dictionary
][
;; description: « insert new node(s) to graph with given name and attributes
;; options: [
;; unique: « add only if node doesn't already exist
;; many: « add multiple nodes at once
;; ]
;; returns: :dictionary :block
if attr "unique" [
found: fetch name attributes
if not? empty? found -> return found
]
result: new []
(not? null? attr 'many)? [
lastId: to :integer first first performQuery 'put getMaxNodeIdSQL ø
queries: new []
vals: new []
loop attributes 'nd [
lastId: lastId + 1
att: nd
(block? att)? -> att: # att [
(string? att)? -> att: #[
name: att
] []
]
'queries ++ createNodeSQL
'vals ++ @[name, write.compact.json ø att]
'result ++ #[
id: lastId
tag: name
properties: att
]
]
performQuery 'put queries vals
if Grafito\verbose? ->
printDebug ~{created |size attributes| nodes}
] [
att: attributes
(block? att)? -> att: # att [
(string? att)? -> att: #[
name: att
] []
]
nodeId: performQuery.id 'put createNodeSQL @[name, write.compact.json ø att]
result: #[
id: nodeId
tag: name
properties: att
]
if Grafito\verbose? ->
printDebug ~{created 1 node (@|nodeId|) with |size att| propert|(1 = size att)? -> "y" -> "ies"|}
]
return result
]
;
; Update existing node
;--------------------------
edit: function [
nd :dictionary :block
attributes :block :dictionary
][
;; description: « update given node(s) with attributes
;; options: [
;; tag: :literal :string « also set new tag
;; replace: « replace entire object properties with given ones
;; ]
;; returns: :nothing
toUpdate: ø
(dictionary? nd)? ->
toUpdate: @[nd]
->
toUpdate: new nd
doReplace?: not? null? attr 'replace
withTag: attr 'tag
additional: attributes
if block? additional ->
additional: # additional
loop toUpdate 'updateable [
newAttributes: ø
(doReplace?)? ->
newAttributes: additional
->
newAttributes: extend updateable\properties additional
updateable\properties: newAttributes
(null? withTag)? ->
performQuery 'edit updateNodePropertiesSQL @[write.compact.json ø newAttributes, updateable\id]
->
performQuery 'edit updateNodeSQL @[withTag, write.compact.json ø newAttributes, updateable\id]
]
]
;
; Delete existing node
;--------------------------
unput: function [
nd :integer :dictionary :block
][
;; description: « remove given node(s) from graph
;; returns: :nothing
toDelete: ø
(block? nd)? ->
toDelete: new nd
->
toDelete: @[nd]
loop toDelete 'deletable [
nodeId: (dictionary? deletable) ? -> deletable\id -> deletable
performQuery 'unput @[
deleteNodeSQL, deleteNodeEdgesSQL
] @[
nodeId, nodeId, nodeId
]
]
]
;
; Link nodes with edges
;--------------------------
link: function [
src :block :dictionary
name :literal :string
tgt :block :dictionary
]
[
;; description: « create a connection from source to target node with given name
;; returns: :block :dictionary
edgeId: 0
(:dictionary = type tgt)? [
edges: new []
if :dictionary = type src [
ret: edge src name tgt
return ret
]
sr: @ src
loop sr [s]->
'edges ++ edge s name tgt
if Grafito\verbose? -> printDebug ~"created |size edges| edges"
return edges
][
edges: new []
tg: @ tgt
(:dictionary = type src)? [
loop tg [t][
'edges ++ edge src name t
]
][
sr: @ src
loop sr [s] [
loop tg [t]->
'edges ++ edge s name t
]
]
if Grafito\verbose? -> printDebug ~"created |size edges| edges"
return edges
]
]
reverseLink: function [
tgt :block :dictionary
name :literal :string
src :block :dictionary
][
link src name tgt
]
reciprocalLink: function [
src :block :dictionary
name :literal :string
tgt :block :dictionary
][
link src name tgt
link tgt name src
]
;
; Delete node edges
;--------------------------
unlink: function [
src :integer :dictionary :block
name :literal :string
tgt :integer :dictionary :block
][
;; description: « remove connection from source to target node with given name
nodesFrom: new []
nodesTo: new []
;case [(type src)=]
(dictionary? src)? -> nodesFrom: @[src\id]
[
(integer? src)? -> nodesFrom: @[src]
[
nodesFrom: new map src 'n [
(dictionary? n)? -> n\id
-> n
]
]
]
; when? -> :dictionary -> nodesFrom: @[src\id]
; when? -> :integer -> nodesFrom: @[src]
; else -> nodesFrom: new map src 'n [
; if? dictionary? n -> n\id
; else -> n
; ]
(dictionary? tgt)? -> nodesFrom: @[tgt\id]
[
(integer? tgt)? -> nodesFrom: @[tgt]
[
nodesFrom: new map tgt 'n [
(dictionary? n)? -> n\id
-> n
]
]
]
; if?case [(type tgt)=]
; when? -> :dictionary -> nodesTo: @[tgt\id]
; when? -> :integer -> nodesTo: @[tgt]
; else -> nodesTo: new map tgt 'n [
; if? dictionary? n -> n\id
; else -> n
; ]
loop nodesFrom 'nf [
loop nodesTo 'nt [
unedge nf name nt
]
]
if Grafito\verbose? [
totalEdges: mul size nodesFrom size nodesTo
edgeLabel: (totalEdges = 1) ? -> "edge" -> "edges"
printDebug ~"removed |totalEdges| |edgeLabel|"
]
]
;
; Check node type
;--------------------------
isA?: function [ls,nd][
nd\tag = to :string ls
]
;
; Helpers
; for edge filters
;--------------------------
edgeFilterRight: function [cnt, props][
pp: props
if block? pp -> pp: # pp
to :edgeFilter @[1, cnt, pp]
]
edgeFilterLeft: function [cnt, props][
pp: props
if block? pp -> pp: # pp
to :edgeFilter @[2, cnt, pp]
]
edgeFilterAny: function [cnt, props][
pp: props
if block? pp -> pp: # pp
to :edgeFilter @[3, cnt, pp]
]
;
; Fetch all results for tag
; with given properties
; and edges
;--------------------------
fetch: function [
name :literal :string
attributes :null :string :block :dictionary
][
;; description: « retrieves nodes with name that match all given attributes
;; options: [
;; .any « try matching any of the attributes
;; ]
;; returns: :block
;; setup main variables
catchAny?: false
if not? null? attr "any" ->
catchAny?: true
collator: ""
if not? Grafito\caseSensitive? ->
collator: " COLLATE NOCASE"
propertyFilters: new []
edgeFilters: new []
qvals: new @[name]
qpropvals: new []
qedgevals: new []
att: new attributes
(string? att)? [
[collate,symb,val]: @[collator, "=", codifySafe att]
; add it once (to check for `name`)
'propertyFilters ++ ~nodePropertyWithValueFilter
'qpropvals ++ @[~"$.name"]
; add it once more (to check for `title`)
'propertyFilters ++ ~nodePropertyWithValueFilter
'qpropvals ++ @[~"$.title"]
; we won't it to be valid when any of the two criteria above is true
; so we'll have to forcefully set `catchAny?` to true
catchAny?: true
]
[
if and? not? dictionary? att
not? null? att ->
att: # att
; ; HACK - to solve
; remove.key 'att 'n
; remove.key 'att 'a
if not? empty? att [
loop att [k,v][
if null? v [
; it's an edge filter without criteria
'edgeFilters ++ hasEdgeFilter
'qedgevals ++ @[k]
continue
]
if dictionary? v [
; it's an edge filter
searchForProperties: ""
'edgeFilters ++ ~edgeWithTargetFilter
'qedgevals ++ @[k, v\id]
continue
]
if is? :edgeFilter v [
; it's a directed edge filter
if dictionary? v\content [
searchForProperties: ""
subfilters: []
subvals: []
if not? empty? v\properties [
collator: ""
if not? Grafito\caseSensitive? ->
collator: " COLLATE NOCASE"
subfilters: new []
loop v\properties [kk,vv][
[collate,symb,val]: @[collator, "=", codifySafe vv]
subvals: subvals ++ ~"$.|kk|"
subfilters: subfilters ++ ~edgePropertyWithValueFilter
]
subfilters: join.with:" AND " subfilters
searchForProperties: ~"AND (|subfilters|)"
]
(v\direction = 1)? [
'edgeFilters ++ ~edgeWithTargetFilter
'qedgevals ++ @[k, v\content\id] ++ subvals
][
(v\direction = 2)? [
'edgeFilters ++ ~edgeWithSourceFilter
'qedgevals ++ @[k, v\content\id] ++ subvals
][
(v\direction = 3)? [
'edgeFilters ++ ~edgeWithAnyFilter
'qedgevals ++ @[k, v\content\id, v\content\id] ++ subvals
][
print "Shouldn't have reached here!"
]
]
]
]
if all? @[
block? v\content
or?
and? [0 < size v\content]
[:dictionary = type first v\content]
not? empty? v\properties
][
searchForProperties: ""
subfilters: []
subvals: []
if not? empty? v\properties [
collator: ""
if not? Grafito\caseSensitive? ->
collator: " COLLATE NOCASE"
subfilters: new []
loop v\properties [kk,vv][
[collate,symb,val]: @[collator, "=", codifySafe vv]
subvals: subvals ++ ~"$.|kk|"
subfilters: subfilters ++ ~edgePropertyWithValueFilter
]
subfilters: join.with:" AND " subfilters
searchForProperties: ~"AND (|subfilters|)"
]
orCriteria: new []
(0 < size v\content)? [
loop v\content [edgef][
(v\direction = 1)? [
'orCriteria ++ ~edgeWithTargetFilter
'qedgevals ++ @[k, edgef\id] ++ subvals
][
(v\direction = 2)? [
'orCriteria ++ ~edgeWithSourceFilter
'qedgevals ++ @[k, edgef\id] ++ subvals
][
(v\direction = 3)? [
'orCriteria ++ ~edgeWithAnyFilter
'qedgevals ++ @[k, edgef\id, edgef\id] ++ subvals
][
print "Shouldn't have reached here!"
]
]
]
]
][
'orCriteria ++ ~edgeWithPropertiesFilter
'qedgevals ++ @[k] ++ subvals
]
'edgeFilters ++ "(" ++ (join.with:" OR " orCriteria) ++ ")"
]
continue
]
if block? v [
(and? 0 < size v
:dictionary = type first v)? [
; it's an array of edge filters
orCriteria: new []
loop v [edgef][
searchForProperties: ""
'orCriteria ++ ~edgeWithTargetFilter
'qedgevals ++ @[k, edgef\id]
]
'edgeFilters ++ "(" ++ (join.with:" OR " orCriteria) ++ ")"
]
[
; it's a complex property filter
loop # v [filt,rg][
[collate,symb,val]: @[collator, "=", v]
requiresCodification: true
(filt = "contains")? -> [collate,symb,val]: @["", "LIKE", ~"%|rg|%"]
[
(filt = "prefix")? -> [collate,symb,val]: @["", "LIKE", ~"|rg|%"]
[
(filt = "suffix")? -> [collate,symb,val]: @["", "LIKE", ~"%|rg|"]
[
(filt = "under")? -> [collate,symb,val]: @["", "<", rg]
[
(filt = "over")? -> [collate,symb,val]: @["", ">", rg]
[
(filt = "underOrEqual")? -> [collate,symb,val]: @["", "<=", rg]
[
(filt = "overOrEqual")? -> [collate,symb,val]: @["", ">=", rg]
[
(filt = "in")? [
[collate,symb,val]: @[collator, "IN", "(" ++ (join.with:", " map rg [x][codifySafe x]) ++ ")"]
requiresCodification: false
][
(filt = "not")? [
(block? rg)? [
[collate,symb,val]: @[collator, "NOT IN", "(" ++ (join.with:", " map rg [x][codifySafe x]) ++ ")"]
requiresCodification: false
]
-> [collate,symb,val]: @[collator, "!=", rg]
]
[
panic.code: 1 ~"filter: |filt| not recognized"
]
]
]
]
]
]