Quickstart as Library

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Currently, Cayley supports being used as a Go library for other projects. To use it in such a way, here's a quick example:
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package main
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​
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import (
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    "fmt"
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    "log"
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​
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    "github.com/cayleygraph/cayley"
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    "github.com/cayleygraph/quad"
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)
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​
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func main() {
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    // Create a brand new graph
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    store, err := cayley.NewMemoryGraph()
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    if err != nil {
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        log.Fatalln(err)
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    }
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​
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    store.AddQuad(quad.Make("phrase of the day", "is of course", "Hello World!", nil))
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​
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    // Now we create the path, to get to our data
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    p := cayley.StartPath(store, quad.String("phrase of the day")).Out(quad.String("is of course"))
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​
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    // Now we iterate over results. Arguments:
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    // 1. Optional context used for cancellation.
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    // 2. Flag to optimize query before execution.
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    // 3. Quad store, but we can omit it because we have already built path with it.
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    err = p.Iterate(nil).EachValue(nil, func(value quad.Value){
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        nativeValue := quad.NativeOf(value) // this converts RDF values to normal Go types
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        fmt.Println(nativeValue)
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    })
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    if err != nil {
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        log.Fatalln(err)
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    }
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}
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To use other backends, you can empty-import them, eg
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import _ "github.com/cayleygraph/cayley/graph/kv/bolt"
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And use them with a call like
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import "github.com/cayleygraph/cayley/graph"
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​
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func open() {
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  // Initialize the database
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  graph.InitQuadStore("bolt", path, nil)
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​
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  // Open and use the database
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  cayley.NewGraph("bolt", path, nil)
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}
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More runnable examples are available in examples folder.
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Last modified 2yr ago
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