Class: ActiveRecord::Materialized::IncrementalMaintainer Private

Inherits:
Object
  • Object
show all
Extended by:
T::Sig
Defined in:
lib/activerecord/materialized/incremental_maintainer.rb

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Hot-path scoped recompute: deletes and re-aggregates only the affected partitions in place.

Instance Method Summary collapse

Constructor Details

#initialize(view_class) ⇒ IncrementalMaintainer

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of IncrementalMaintainer.



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# File 'lib/activerecord/materialized/incremental_maintainer.rb', line 13

def initialize(view_class)
  @view_class = view_class
end

Instance Method Details

#maintain!(_connection, _table_name) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/activerecord/materialized/incremental_maintainer.rb', line 18

def maintain!(_connection, _table_name)
  delta = maintenance_store.consume_pending_delta!
  relation = resolve_maintenance_relation(delta)

  row_count = RelationCacheWriter.new(view_class).replace_partitions!(
    relation,
    key_tuples: delta.key_tuples,
    full_partition: delta.full_partition?
  )

  # On a cold view the maintained partitions are now fresh.
  unless delta.full_partition? || view_class.materialized?
    PartitionState.new(view_class).mark_fresh!(delta.key_tuples)
  end

  row_count
end