func newQuadStore(addr string, options graph.Options) (graph.QuadStore, error) {
var qs QuadStore
conn, err := mgo.Dial(addr)
if err != nil {
return nil, err
}
conn.SetSafe(&mgo.Safe{})
dbName := DefaultDBName
val, ok, err := options.StringKey("database_name")
if err != nil {
return nil, err
} else if ok {
dbName = val
}
qs.db = conn.DB(dbName)
qs.session = conn
qs.ids = newCache(1 << 16)
qs.sizes = newCache(1 << 16)
return &qs, nil
}
func createNewMongoGraph(addr string, options graph.Options) error {
conn, err := mgo.Dial(addr)
if err != nil {
return err
}
conn.SetSafe(&mgo.Safe{})
dbName := DefaultDBName
val, ok, err := options.StringKey("database_name")
if err != nil {
return err
} else if ok {
dbName = val
}
db := conn.DB(dbName)
indexOpts := mgo.Index{
Key: []string{"subject"},
Unique: false,
DropDups: false,
Background: true,
Sparse: true,
}
db.C("quads").EnsureIndex(indexOpts)
indexOpts.Key = []string{"predicate"}
db.C("quads").EnsureIndex(indexOpts)
indexOpts.Key = []string{"object"}
db.C("quads").EnsureIndex(indexOpts)
indexOpts.Key = []string{"label"}
db.C("quads").EnsureIndex(indexOpts)
logOpts := mgo.Index{
Key: []string{"LogID"},
Unique: true,
DropDups: false,
Background: true,
Sparse: true,
}
db.C("log").EnsureIndex(logOpts)
return nil
}