cayley

package module

v0.7.0 Latest Latest Go to latest Published: Dec 24, 2017 License: Apache-2.0 Imports: 5 Imported by: 0

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Repository

github.com/linuxerwang/cayley

Links

Open Source Insights

README ¶

Cayley

Cayley is an open-source graph inspired by the graph database behind Freebase and Google's Knowledge Graph.

Its goal is to be a part of the developer's toolbox where Linked Data and graph-shaped data (semantic webs, social networks, etc) in general are concerned.

Features

Community driven
Written in Go
- can be used as a Go library
Easy to get running (3 or 4 commands)
RESTful API
- or a REPL if you prefer
Built-in query editor and visualizer
Multiple query languages:
- Gizmo - a JavaScript, with a Gremlin-inspired* graph object.
- GraphQL-inspired* query language.
- (simplified) MQL, for Freebase fans
Plays well with multiple backend stores:
- KVs: Bolt, LevelDB
- NoSQL: MongoDB, ElasticSearch
- SQL: PostgreSQL, CockroachDB, MySQL
- In-memory, ephemeral
Modular design; easy to extend with new languages and backends
Good test coverage
Speed, where possible.

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.

Community

Website: cayley.io
Slack: cayleygraph.slack.com -- Invite here
Discourse list: discourse.cayley.io (Also acts as mailing list, enable mailing list mode)
Twitter: @cayleygraph

Documentation

See the docs folder for v0.7 docs.

Documentation ¶

Index ¶

Variables
func Quad(subject, predicate, object, label interface{}) quad.Quad
func Triple(subject, predicate, object interface{}) quad.Quad
type Handle
- func NewGraph(name, dbpath string, opts graph.Options) (*Handle, error)
- func NewMemoryGraph() (*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 ¶ added in v0.5.0

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

func Triple ¶ added in v0.5.0

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

Types ¶

type Handle ¶ added in v0.5.0

type Handle struct {
	graph.QuadStore
	graph.QuadWriter
}

func NewGraph ¶ added in v0.5.0

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

func NewMemoryGraph ¶ added in v0.5.0

func NewMemoryGraph() (*Handle, error)

func (*Handle) Close ¶ added in v0.5.0

func (h *Handle) Close() error

type Iterator ¶ added in v0.5.0

type Iterator = graph.Iterator

type Path ¶ added in v0.5.0

type Path = path.Path

type QuadStore ¶ added in v0.5.0

type QuadStore = graph.QuadStore

type QuadWriter ¶ added in v0.5.0

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
docgen
examples
hello_bolt
hello_schema
hello_world
transaction
graph
all
bolt
bolt2 bolt2 package is moved to ./graph/kv/bolt.	bolt2 package is moved to ./graph/kv/bolt.
gaedatastore
graphmock
graphtest
graphtest/testutil
http
iterator
kv
kv/bolt
kv/btree Package b implements a B+tree.	Package b implements a B+tree.
kv/kvtest
kv/leveldb
leveldb
log
memstore Package b implements a B+tree.	Package b implements a B+tree.
mongo
nosql
nosql/elastic
nosql/mongo
nosql/nosqltest
path
path/pathtest
proto Package proto is a generated protocol buffer package.	Package proto is a generated protocol buffer package.
shape
sql
sql/cockroach
sql/mysql
sql/postgres
sql/sqltest
internal
decompressor
gephi
http
lru
repl
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
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
mql
sexp
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
voc Package voc implements an RDF namespace (vocabulary) registry.	Package voc implements an RDF namespace (vocabulary) registry.
core Package core imports all well-known RDF vocabularies.	Package core imports all well-known RDF vocabularies.
rdf Package rdf contains constants of the RDF Concepts Vocabulary (RDF)	Package rdf contains constants of the RDF Concepts Vocabulary (RDF)
rdfs Package rdfs contains constants of the RDF Schema vocabulary (RDFS)	Package rdfs contains constants of the RDF Schema vocabulary (RDFS)
schema Package schema contains constants of the Schema.org vocabulary.	Package schema contains constants of the Schema.org vocabulary.
writer

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