dao

Contains some traits for writing data.

It's not intended to be a full-fledged ACID database or support SQL queries - just a means to put some basic functionality on top of the file system.

# IDs

The T allows data to be written and retrieved against a key

# Timestamps

The agora.io.dao.TimestampDao can write timestamps against a value, or retrieve a timestamp for a value

# Tags

The agora.io.dao.TagDao can write tags against a value, or retrieve a tags for a value

Linear Supertypes

AnyRef, Any

trait FromBytes[T] extends AnyRef

Typeclass to serialize a type from a byte array
Typeclass to serialize a type from a byte array
TODO - replace this with a better FP typeclass
trait HasId[T] extends AnyRef

T
the type for which there's an ID
trait IdDao[ID, T] extends AnyRef

An interface representing a key/value store
An interface representing a key/value store
ID
the id type
T
the value type
trait Persist[T] extends AnyRef
trait TagDao[T] extends AnyRef

Represents the ability to tag data with key/values
case class TimeRange(from: Timestamp, to: Timestamp) extends Product with Serializable

A time range, inclusive
type Timestamp = LocalDateTime
trait TimestampDao[T] extends TimestampWriter[T] with TimestampReader[T]
trait TimestampReader[T] extends AnyRef

Provides a means of finding values based on a time range, as well as determining the minimum/maximum time.
trait TimestampWriter[T] extends AnyRef
trait ToBytes[T] extends AnyRef

Typeclass to serialize a type to bytes
Typeclass to serialize a type to bytes
T
the value to convert