Datastore class abstract

abstract class for a datastore

Implementers

• MapDataStore
• MemoryDatastore

Constructors

Datastore()

const

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

lateOpen() → Future<void>

Open file descriptors

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

readLabels(Tile upperLeft, Tile lowerRight) → Future<DatastoreReadResult?>

Reads data for an area defined by the tile in the upper left and the tile in the lower right corner. The default implementation combines the results from all tiles, a possibly inefficient solution. Precondition: upperLeft.tileX <= lowerRight.tileX && upperLeft.tileY <= lowerRight.tileY

readLabelsSingle(Tile tile) → Future<DatastoreReadResult?>

Reads only labels for tile. Labels are pois as well as ways that carry a name tag. It is permissible for the MapDataStore to return more data. This default implementation returns all map data, which is inefficient, but works.

readMapData(Tile upperLeft, Tile lowerRight) → Future<DatastoreReadResult?>

Reads data for an area defined by the tile in the upper left and the tile in the lower right corner. The default implementation combines the results from all tiles, a possibly inefficient solution. Precondition: upperLeft.tileX <= lowerRight.tileX && upperLeft.tileY <= lowerRight.tileY

readMapDataSingle(Tile tile) → Future<DatastoreReadResult?>

Reads data for tile.

readPoiData(Tile upperLeft, Tile lowerRight) → Future<DatastoreReadResult?>

Reads POI data for an area defined by the tile in the upper left and the tile in the lower right corner. The default implementation combines the results from all tiles, a possibly inefficient solution. Precondition: upperLeft.tileX <= lowerRight.tileX && upperLeft.tileY <= lowerRight.tileY

readPoiDataSingle(Tile tile) → Future<DatastoreReadResult?>

Reads only POI data for tile.

supportsTile(Tile tile, Projection projection) → bool

Returns true if MapDatabase contains the given tile.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited