Example #1
0
func CreateNewMongoGraph(addr string, options graph.Options) bool {
	conn, err := mgo.Dial(addr)
	if err != nil {
		glog.Fatal("Error connecting: ", err)
		return false
	}
	conn.SetSafe(&mgo.Safe{})
	dbName := DefaultDBName
	if val, ok := options.StringKey("database_name"); ok {
		dbName = val
	}
	db := conn.DB(dbName)
	indexOpts := mgo.Index{
		Key:        []string{"Sub"},
		Unique:     false,
		DropDups:   false,
		Background: true,
		Sparse:     true,
	}
	db.C("triples").EnsureIndex(indexOpts)
	indexOpts.Key = []string{"Pred"}
	db.C("triples").EnsureIndex(indexOpts)
	indexOpts.Key = []string{"Obj"}
	db.C("triples").EnsureIndex(indexOpts)
	indexOpts.Key = []string{"Provenance"}
	db.C("triples").EnsureIndex(indexOpts)
	return true
}
func _ensureDbIndexes(session *mgo.Session) {

	sessions := session.DB(_cfg.Database).C(SESSIONS_COLLECTION)
	expireSessionsIndex := mgo.Index{}
	//TODO: should read from the sessions config
	//or be invoked from the bootstrapper
	expireSessionsIndex.ExpireAfter = 1 * time.Hour
	expireSessionsIndex.Key = []string{"expiry"}
	sessions.EnsureIndex(expireSessionsIndex)
}
Example #3
0
File: mongo.go Project: pkar/pfftdb
// Index creates the default indeces for the graph.
func (m *Mongo) Index(gid string, background bool) error {
	m.Session.ResetIndexCache()

	sessionCopy := m.Session.Copy()
	defer sessionCopy.Close()
	col := sessionCopy.DB(m.DBName).C(gid)

	cInfo := &mgo.CollectionInfo{DisableIdIndex: true}
	err := col.Create(cInfo)
	if err != nil {
		log.Error(err)
	}

	/*
		// TODO figure out the magic of mongo indexes
		index := mgo.Index{
			Key:        []string{"g", "s", "p", "o"},
			Background: false,
			Sparse:     true,
			Unique:     true,
			DropDups:   true,
		}
		err := col.EnsureIndex(index)
		return err
	*/

	index := mgo.Index{
		Key:        []string{"g", "s"},
		Background: background,
		Sparse:     true,
	}
	err = col.EnsureIndex(index)
	if err != nil {
		log.Error(err)
		//return err
	}
	log.V(2).Infof("%+v", index)

	index.Key = []string{"g", "o"}
	err = col.EnsureIndex(index)
	if err != nil {
		log.Error(err)
		//return err
	}
	log.V(2).Infof("%+v", index)

	index.Key = []string{"g", "p"}
	err = col.EnsureIndex(index)
	if err != nil {
		log.Error(err)
		//return err
	}
	log.V(2).Infof("%+v", index)

	index.Key = []string{"g", "s", "p"}
	err = col.EnsureIndex(index)
	if err != nil {
		log.Error(err)
		//return err
	}
	log.V(2).Infof("%+v", index)

	index.Key = []string{"g", "s", "o"}
	err = col.EnsureIndex(index)
	if err != nil {
		log.Error(err)
		//return err
	}
	log.V(2).Infof("%+v", index)

	index.Key = []string{"g", "p", "o"}
	err = col.EnsureIndex(index)
	if err != nil {
		log.Error(err)
		//return err
	}
	log.V(2).Infof("%+v", index)

	index.Key = []string{"g", "s", "p", "o"}
	index.Unique = true
	index.DropDups = true
	err = col.EnsureIndex(index)
	if err != nil {
		log.Error(err)
		//return err
	}
	log.V(2).Infof("%+v", index)

	return nil
}