Awesome
Fabric
Fabric is a triple-store written in Go
. Fabric provides simple functions
and store options to deal with "Subject->Predicate->Object" relations or so called
triples.
Usage
Get fabric by using go get -u github.com/spy16/fabric
(Fabric as a library has no
external dependencies)
// See next snippet for using persistent SQL backend
fab := fabric.New(&fabric.InMemoryStore{})
fab.Insert(context.Background(), fabric.Triple{
Source: "Bob",
Predicate: "Knows",
Target: "John",
})
fab.Query(context.Background(), fabric.Query{
Source: fabric.Clause{
Type: "equal",
Value: "Bob",
},
})
To use a SQL database for storing the triples, use the following snippet:
db, err := sql.Open("sqlite3", "fabric.db")
if err != nil {
panic(err)
}
store := &fabric.SQLStore{DB: db}
store.Setup(context.Background()) // to create required tables
fab := fabric.New(store)
Fabric
SQLStore
uses Go's standarddatabase/sql
package. So any SQL database supported through this interface (includes most major SQL databases) should work.
Additional store support can be added by implementing the Store
interface.
type Store interface {
Insert(ctx context.Context, tri Triple) error
Query(ctx context.Context, q Query) ([]Triple, error)
Delete(ctx context.Context, q Query) (int, error)
}
Optional Counter
and ReWeighter
can be implemented by the store implementations
to support extended query options.
REST API
The server
package exposes REST APIs (/triples
endpoint) which can be used to query,
insert/delete or reweight triples using any HTTP client.