cayley

package module
v0.9.1 Latest Latest
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 Go to latest Published: Jun 28, 2024 License: Apache-2.0 Imports: 7 Imported by: 0

README

Cayley

GoDoc Widget Go Report Card Widget

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.

Features

  • Built-in query editor, visualizer and REPL
  • Multiple query languages:
  • 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

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
Package clog provides a logging interface for cayley packages.
 Package clog provides a logging interface for cayley packages.
glog
cmd
cayley command
cayley/command
cayleyexport command
cayleyimport command
docgen command
download_ui command
examples
hello_bolt command
hello_schema command
hello_world command
transaction command
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
Package inference implements an in-memory store for inference.
 Package inference implements an in-memory store for inference.
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
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/
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
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

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