Class: ActiveRecord::Materialized::CacheTableSchema::IndexDefinition Private

Inherits:
Data
  • Object
show all
Defined in:
lib/activerecord/materialized/cache_table_schema.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.

The partition-key index a cache table is built with: the GROUP BY / maintenance-key columns (unqualified to their cache-column names), unique when the key is the whole partition identity (a plain GROUP BY, one row per group). Incremental maintenance filters/deletes/re-selects by exactly these columns, so without this index every partition operation is a full cache scan.

Instance Attribute Summary collapse

Instance Attribute Details

#columns ⇒ Object (readonly)

Returns the value of attribute columns

Returns:

  • (Object) —

    the current value of columns



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# File 'lib/activerecord/materialized/cache_table_schema.rb', line 34

def columns
  @columns
end

#unique ⇒ Object (readonly)

Returns the value of attribute unique

Returns:

  • (Object) —

    the current value of unique



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# File 'lib/activerecord/materialized/cache_table_schema.rb', line 34

def unique
  @unique
end