cayley

package module

v0.9.0 Latest Latest Go to latest Published: May 4, 2024 License: Apache-2.0 Imports: 7 Imported by: 0

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Repository

github.com/aperturerobotics/cayley

Links

Open Source Insights

README ¶

Cayley

Cayley is an open-source database for Linked Data. It is inspired by the graph database behind Google's Knowledge Graph (formerly Freebase).

This is a fork of the upstream project.

Documentation

Features

Built-in query editor, visualizer and REPL
Multiple query languages:
- Gizmo: query language inspired by Gremlin
- GraphQL-inspired query language
- MQL: simplified version for Freebase fans
Modular: easy to connect to your favorite programming languages and back-end stores
Production ready: well tested and used by various companies for their production workloads
Fast: optimized specifically for usage in applications

Performance

Rough performance testing shows that, on 2014 consumer hardware and an average disk, 134m quads in LevelDB is no problem and a multi-hop intersection query -- films starring X and Y -- takes ~150ms.

License

Apache-2.0

Documentation ¶

Index ¶

Variables
func Quad(subject, predicate, object, label interface{}) quad.Quad
func Triple(subject, predicate, object interface{}) quad.Quad
type Handle
- func NewGraph(ctx context.Context, name, dbpath string, opts graph.Options) (*Handle, error)
- func NewMemoryGraph(ctx context.Context) (*Handle, error)
- func (h *Handle) Close() error
type Iterator
type Path
type QuadStore
type QuadWriter

Constants ¶

This section is empty.

Variables ¶

View Source

var (
	StartMorphism = path.StartMorphism
	StartPath     = path.StartPath

	NewTransaction = graph.NewTransaction
)

Functions ¶

func Quad ¶

func Quad(subject, predicate, object, label interface{}) quad.Quad

func Triple ¶

func Triple(subject, predicate, object interface{}) quad.Quad

Types ¶

type Handle ¶

type Handle struct {
	graph.QuadStore
	graph.QuadWriter
}

func NewGraph ¶

func NewGraph(ctx context.Context, name, dbpath string, opts graph.Options) (*Handle, error)

func NewMemoryGraph ¶

func NewMemoryGraph(ctx context.Context) (*Handle, error)

func (*Handle) Close ¶

func (h *Handle) Close() error

type Iterator ¶

type Iterator = iterator.Shape

type Path ¶

type Path = path.Path

type QuadStore ¶

type QuadStore = graph.QuadStore

type QuadWriter ¶

type QuadWriter = graph.QuadWriter

Source Files ¶

View all Source files

Directories ¶

Path	Synopsis
client
clog Package clog provides a logging interface for cayley packages.	Package clog provides a logging interface for cayley packages.
glog
cmd
cayley
cayley/command
cayleyexport
cayleyimport
docgen
download_ui
examples
hello_bolt
hello_schema
hello_world
transaction
graph
all
graphmock
graphtest
graphtest/testutil
http
iterator
kv
kv/all
kv/badger
kv/bolt
kv/btree
kv/kvtest
kv/leveldb
log
memstore Package b implements a B+tree.	Package b implements a B+tree.
proto
refs
sql
sql/cockroach
sql/mysql
sql/postgres
sql/sqlite
sql/sqltest
inference Package inference implements an in-memory store for inference.	Package inference implements an in-memory store for inference.
internal
decompressor
gephi
http
linkedql/schema
lru
repl
kv Package kv provides an abstraction over hierarchical key-value stores.	Package kv provides an abstraction over hierarchical key-value stores.
all
base
bbolt
bolt
flat Package flat provides an abstraction over flat key-value stores.	Package flat provides an abstraction over flat key-value stores.
flat/all
flat/badger
flat/btree Package b implements a B+tree.	Package b implements a B+tree.
flat/leveldb
flat/pebble
kvdebug
kvtest
options
quad Package quad defines quad and triple handling.	Package quad defines quad and triple handling.
dot Package dot provides an encoder for DOT format (graphviz).	Package dot provides an encoder for DOT format (graphviz).
gml Package gml provides an encoder for Graph Modeling Format	Package gml provides an encoder for Graph Modeling Format
graphml Package graphml provides an encoder for GraphML format	Package graphml provides an encoder for GraphML format
json Package json provides an encoder/decoder for JSON quad formats	Package json provides an encoder/decoder for JSON quad formats
jsonld Package jsonld provides an encoder/decoder for JSON-LD quad format	Package jsonld provides an encoder/decoder for JSON-LD quad format
nquads Package nquads implements parsing the RDF 1.1 N-Quads like line-based syntax for RDF datasets.	Package nquads implements parsing the RDF 1.1 N-Quads like line-based syntax for RDF datasets.
pquads Package pquads implements Cayley-specific protobuf-based quads format.	Package pquads implements Cayley-specific protobuf-based quads format.
pquads/pio
pquads/pio/test
voc Package voc implements an RDF namespace (vocabulary) registry.	Package voc implements an RDF namespace (vocabulary) registry.
voc/core Package core imports all well-known RDF vocabularies.	Package core imports all well-known RDF vocabularies.
voc/owl Package owl contains constants of the Web Ontology Language (OWL)	Package owl contains constants of the Web Ontology Language (OWL)
voc/rdf Package rdf contains constants of the RDF Concepts Vocabulary (RDF)	Package rdf contains constants of the RDF Concepts Vocabulary (RDF)
voc/rdfs Package rdfs contains constants of the RDF Schema vocabulary (RDFS)	Package rdfs contains constants of the RDF Schema vocabulary (RDFS)
voc/schema Package schema contains constants of the Schema.org vocabulary.	Package schema contains constants of the Schema.org vocabulary.
voc/xsd Package xsd contains constants of the W3C XML Schema Definition Language https://www.w3.org/TR/xmlschema11-1/	Package xsd contains constants of the W3C XML Schema Definition Language https://www.w3.org/TR/xmlschema11-1/
query Package query defines the graph session interface general to all query languages.	Package query defines the graph session interface general to all query languages.
gizmo
graphql
linkedql
linkedql/steps
mql
path
path/pathtest
sexp
shape
schema Package schema contains helpers to map Go objects to quads and vise-versa.	Package schema contains helpers to map Go objects to quads and vise-versa.
server
http
version
writer

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