index

type AnalysisQueue struct {
	// contains filtered or unexported fields
}

type AnalysisResult struct {
	DocID string
	Rows  []IndexRow
}

type AnalysisWork struct {
	// contains filtered or unexported fields
}

type Batch struct {
	IndexOps    map[string]*document.Document
	InternalOps map[string][]byte
}

type DictEntry struct {
	Term  string
	Count uint64
}

type DocIDReader interface {
	// Next returns the next document internal identifier in the natural
	// index order, nil when the end of the sequence is reached.
	Next() (IndexInternalID, error)

	// Advance resets the iteration to the first internal identifier greater than
	// or equal to ID. If ID is smaller than the start of the range, the iteration
	// will start there instead. If ID is greater than or equal to the end of
	// the range, Next() call will return io.EOF.
	Advance(ID IndexInternalID) (IndexInternalID, error)
	Close() error
}

type DocumentFieldTermVisitor func(field string, term []byte)

type FieldCache struct {
	// contains filtered or unexported fields
}

type FieldDict interface {
	Next() (*DictEntry, error)
	Close() error
}

type FieldTerms map[string][]string

type Index interface {
	Open() error
	Close() error

	Update(doc *document.Document) error
	Delete(id string) error
	Batch(batch *Batch) error

	SetInternal(key, val []byte) error
	DeleteInternal(key []byte) error

	// Reader returns a low-level accessor on the index data. Close it to
	// release associated resources.
	Reader() (IndexReader, error)

	Stats() json.Marshaler
	StatsMap() map[string]interface{}

	Analyze(d *document.Document) *AnalysisResult

	Advanced() (store.KVStore, error)
}

type IndexInternalID []byte

type IndexReader interface {
	TermFieldReader(term []byte, field string, includeFreq, includeNorm, includeTermVectors bool) (TermFieldReader, error)

	// DocIDReader returns an iterator over all doc ids
	// The caller must close returned instance to release associated resources.
	DocIDReaderAll() (DocIDReader, error)

	DocIDReaderOnly(ids []string) (DocIDReader, error)

	FieldDict(field string) (FieldDict, error)

	// FieldDictRange is currently defined to include the start and end terms
	FieldDictRange(field string, startTerm []byte, endTerm []byte) (FieldDict, error)
	FieldDictPrefix(field string, termPrefix []byte) (FieldDict, error)

	Document(id string) (*document.Document, error)
	DocumentVisitFieldTerms(id IndexInternalID, fields []string, visitor DocumentFieldTermVisitor) error

	Fields() ([]string, error)

	GetInternal(key []byte) ([]byte, error)

	DocCount() (uint64, error)

	ExternalID(id IndexInternalID) (string, error)
	InternalID(id string) (IndexInternalID, error)

	DumpAll() chan interface{}
	DumpDoc(id string) chan interface{}
	DumpFields() chan interface{}

	Close() error
}

type IndexRow interface {
	KeySize() int
	KeyTo([]byte) (int, error)
	Key() []byte

	ValueSize() int
	ValueTo([]byte) (int, error)
	Value() []byte
}

type TermFieldDoc struct {
	Term    string
	ID      IndexInternalID
	Freq    uint64
	Norm    float64
	Vectors []*TermFieldVector
}

type TermFieldReader interface {
	// Next returns the next document containing the term in this field, or nil
	// when it reaches the end of the enumeration.  The preAlloced TermFieldDoc
	// is optional, and when non-nil, will be used instead of allocating memory.
	Next(preAlloced *TermFieldDoc) (*TermFieldDoc, error)

	// Advance resets the enumeration at specified document or its immediate
	// follower.
	Advance(ID IndexInternalID, preAlloced *TermFieldDoc) (*TermFieldDoc, error)

	// Count returns the number of documents contains the term in this field.
	Count() uint64
	Close() error
}

type TermFieldVector struct {
	Field          string
	ArrayPositions []uint64
	Pos            uint64
	Start          uint64
	End            uint64
}