BatchUpdates class abstract

BatchUpdates holds a collection of updates to apply atomically to a DB.

The updates are applied in the order in which they are added to the BatchUpdates. For example, the value of key will be "v3" after the following batch is written:

batch.Put("key", "v1"); batch.Delete("key"); batch.Put("key", "v2"); batch.Put("key", "v3");

Multiple threads can invoke const methods on a BatchUpdates without external synchronization, but if any of the threads may call a non-const method, all threads accessing the same BatchUpdates must use external synchronization.

Constructors

BatchUpdates()

factory

Properties

hashCode → int

The hash code for this object.

no setter, inherited

ptr → Pointer<NativeType>

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

append(BatchUpdates updates) → void

Copies the operations in "source" to this batch. throws StateError if method was called after BatchUpdates.dispose

clear() → void

Clear all updates buffered in this batch.

delete(RawData key) → void

If the database contains a mapping for key, erase it. Else do nothing. throws StateError if method was called after BatchUpdates.dispose

dispose() → void

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

put(RawData key, RawData value) → void

Store the mapping "key->value" in the database. throws StateError if method was called after BatchUpdates.dispose

toString() → String

A string representation of this object.

inherited

Operators

operator +(BatchUpdates obj) → void

operator ==(Object other) → bool

The equality operator.

inherited