Exemple #1
0
// GetSketches return a list of sketch tuples [name, type]
func (m *Manager) GetSketches() [][2]string {
	sketches := tupleResult{}
	for _, v := range m.infos.info {
		sketches = append(sketches,
			[2]string{v.GetName(),
				datamodel.GetTypeString(v.GetType())})
	}
	sort.Sort(sketches)
	return sketches
}
Exemple #2
0
// Get ...
func (d *Dict) Get(data interface{}) (interface{}, error) {
	typ := d.Info.Sketch.GetType()
	switch datamodel.GetTypeString(typ) {
	case datamodel.Bloom:
		return d.getMemb(data)
	case datamodel.CML:
		return d.getFreq(data)
	case datamodel.HLLPP:
		return d.getCard(data)
	}
	return nil, fmt.Errorf("Unknown error: %v", d.Info.GetType().String()) // FIXME: return some error
}
Exemple #3
0
// Get ...
func (sp *SketchProxy) Get(data interface{}) (interface{}, error) {
	switch datamodel.GetTypeString(sp.GetType()) {
	case datamodel.HLLPP:
		return sp.sketch.Get(nil)
	case datamodel.CML:
		return sp.sketch.Get(data)
	case datamodel.TopK:
		return sp.sketch.Get(nil)
	case datamodel.Bloom:
		return sp.sketch.Get(data)
	default:
		return nil, fmt.Errorf("Invalid sketch type: %s", sp.GetType())
	}
}
Exemple #4
0
// CreateSketch ...
func CreateSketch(info *datamodel.Info) (*SketchProxy, error) {
	var err error
	var sketch datamodel.Sketcher
	sp := &SketchProxy{info, sketch, sync.RWMutex{}}

	switch datamodel.GetTypeString(info.GetType()) {
	case datamodel.HLLPP:
		sp.sketch, err = NewHLLPPSketch(info)
	case datamodel.CML:
		sp.sketch, err = NewCMLSketch(info)
	case datamodel.TopK:
		sp.sketch, err = NewTopKSketch(info)
	case datamodel.Bloom:
		sp.sketch, err = NewBloomSketch(info)
	default:
		return nil, fmt.Errorf("Invalid sketch type: %s", sp.GetType())
	}

	if err != nil {
		return nil, err
	}
	return sp, nil
}
Exemple #5
0
// LoadSketch ...
func LoadSketch(info *datamodel.Info, file *os.File) (*SketchProxy, error) {
	var sketch datamodel.Sketcher
	sp := &SketchProxy{info, sketch, sync.RWMutex{}}

	size, err := utils.GetFileSize(file)
	if err != nil {
		return nil, err
	}

	data := make([]byte, size, size)
	_, err = file.Read(data)
	if err != nil {
		return nil, fmt.Errorf("Error loading data for sketch: %s", info.ID())
	}

	switch datamodel.GetTypeString(info.GetType()) {
	case datamodel.HLLPP:
		sp.sketch = &HLLPPSketch{}
		err = sp.sketch.Unmarshal(info, data)
	case datamodel.CML:
		sp.sketch = &CMLSketch{}
		err = sp.sketch.Unmarshal(info, data)
	case datamodel.TopK:
		sp.sketch = &TopKSketch{}
		err = sp.sketch.Unmarshal(info, data)
	case datamodel.Bloom:
		sp.sketch = &BloomSketch{}
		err = sp.sketch.Unmarshal(info, data)
	default:
		return nil, fmt.Errorf("Invalid sketch type: %s", sp.GetType())
	}
	if err != nil {
		return nil, err
	}
	return sp, nil
}
Exemple #6
0
func isValidType(info *datamodel.Info) bool {
	if info.Type == nil {
		return false
	}
	return len(datamodel.GetTypeString(info.GetType())) != 0
}