Cayley
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Cayley Documentation
Getting Started
Install Cayley
Configuration
Usage
Quickstart as Library
Advanced Use
HTTP Methods
3rd-Party-APIs
UI Overview
Migration
Query Languages
Gizmo API
GraphQL Guide
MQL Guide
Gephi GraphStream
Getting Involved
Glossary of Terms
Contributing
TODOs
Locations of parts of Cayley
Deployment
Running in Docker
Running in Kubernetes
Tools
Convert Linked Data files
Powered By
GitBook
Getting Started
This guide will take you through starting a graph based on provided data.
Prerequisites
This tutorial requires you to be connected to
local Cayley installation
. For more information on installing Cayley locally, see
Install Cayley
.
Start Cayley
cayley http
You should see:
Cayley version: 0.7.7 (dev snapshot)
using backend "memstore"
listening on 127.0.0.1:64210, web interface at http://127.0.0.1:64210
You can now open the web-interface on:
localhost:64210
.
Cayley is configured by default to run in memory (That's what
backend memstore
means). To change the configuration see the documentation for
Configuration File
or run
cayley http --help
.
For more information about the UI see:
UI Overview
Run with sample data
Download sample data
Sample Data
Run Cayley
cayley http --load 30kmoviedata.nq.gz
Query Data
Using the 30kmoviedata.nq dataset from above, let's walk through some simple queries:
Query all vertices in the graph
To select all vertices in the graph call, limit to 5 first results.
g
and
V
are synonyms for
graph
and
Vertex
respectively, as they are quite common.
g
.
V
().
getLimit
(
5
);
Match a property of a vertex
Find vertex with property "Humphrey Bogart"
g
.
V
()
.
has
(
"<name>"
,
"Humphrey Bogart"
)
.
all
();
You may start to notice a pattern here: with Gizmo, the query lines tend to:
Start somewhere in the graph | Follow a path | Run the query with "all" or "getLimit"
Match a complex path
Get the list of actors in the film
g
.
V
()
.
has
(
"<name>"
,
"Casablanca"
)
.
out
(
"</film/film/starring>"
)
.
out
(
"</film/performance/actor>"
)
.
out
(
"<name>"
)
.
all
();
Match
This is starting to get long. Let's use a Morphism, a pre-defined path stored in a variable, as our linkage
var
filmToActor
=
g
.
Morphism
()
.
out
(
"</film/film/starring>"
)
.
out
(
"</film/performance/actor>"
);
g
.
V
()
.
has
(
"<name>"
,
"Casablanca"
)
.
follow
(
filmToActor
)
.
out
(
"<name>"
)
.
all
();
To learn more about querying see
Gizmo Documentation
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Install Cayley
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Outline
Prerequisites
Start Cayley
Run with sample data
Download sample data
Run Cayley
Query Data
Query all vertices in the graph
Match a property of a vertex
Match a complex path
Match