DVBackfill class final

Copies source into target for every row of table, chunked by key.

Constructors

DVBackfill({required DVDatabaseAdapter database, required String id, required String table, required String key, required String source, required String target, required Object? convert(Object? source), int chunkSize = 1000, DateTime clock()?})

Properties

chunkSize → int

final

convert → Object? Function(Object? source)

What the new shape should hold for a value of the old one.

final

database → DVDatabaseAdapter

final

hashCode → int

The hash code for this object.

no setter, inherited

id → String

Names the backfill in its records; stable across restarts.

final

key → String

final

paused → Future<bool>

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

source → String

final

table → String

final

target → String

final

Methods

backfillNext() → Future<DVBackfillChunk?>

Copies the next chunk, or returns null when no rows remain.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

pause() → Future<void>

Stops the backfill at its next chunk boundary, across restarts.

progress() → Future<DVBackfillProgress>

Every recorded chunk and whether the backfill is complete.

resume() → Future<void>

run({int? maxChunks, DVBackfillThrottle? throttle, DVBackfillLoad load()?, Future<void> sleep(Duration)?}) → Future<DVBackfillRun>

Copies chunks until none remain, the backfill is paused, or maxChunks have been copied, paced by throttle when there is one.

toString() → String

A string representation of this object.

inherited

verify({int? chunk}) → Future<List<DVSchemaFinding>>

Hashes every recorded chunk -- or only chunk -- on both shapes.

Operators

operator ==(Object other) → bool

The equality operator.

inherited