types

type BlobItem ¶ added in v0.19.0

type BlobItem interface {
	Key() []byte
	ValueCopy(dst []byte) ([]byte, error)
}

BlobItem represents a value returned by an iterator

type BlobIterator ¶ added in v0.19.0

type BlobIterator interface {
	Rewind()
	Seek(prefix []byte)
	Valid() bool
	ValidForPrefix(prefix []byte) bool
	Next()
	Item() BlobItem
	Close()
	Err() error
}

BlobIterator provides key iteration over the blob store.

Important lifecycle constraint: items returned by `Item()` must only be accessed while the underlying transaction used to create the iterator is still active. Implementations may validate transaction state at access time (for example `ValueCopy` may fail if the transaction has been committed or rolled back). Typical usage iterates and accesses item values within the same transaction scope.

type BlobIteratorOptions ¶ added in v0.19.0

type BlobIteratorOptions struct {
	Prefix  []byte
	Reverse bool
}

BlobIteratorOptions configures blob iterator creation

type BlockMetadata ¶ added in v0.20.0

type BlockMetadata struct {
	cbor.StructAsArray
	ID       uint64
	Type     uint
	Height   uint64
	PrevHash []byte
}

BlockMetadata contains metadata for a block stored in blob

type Rat ¶

type Rat struct {
	*big.Rat
}

func (r *Rat) Scan(val any) error

func (r Rat) Value() (driver.Value, error)

type Txn ¶ added in v0.19.0

type Txn interface {
	Commit() error
	Rollback() error
}

Txn is a simple transaction handle for commit/rollback only. Database layer (Txn) coordinates metadata and blob operations separately.

type Uint64 ¶

type Uint64 uint64

func (u *Uint64) Scan(val any) error

func (u Uint64) Value() (driver.Value, error)