Module: RedisMemo::MemoizeQuery
- Defined in:
- lib/redis_memo/memoize_query.rb,
lib/redis_memo/memoize_query/memoize_table_column.rb
Overview
Hook into ActiveRecord to cache SQL queries and perform auto cache invalidation
Defined Under Namespace
Classes: CachedSelect, Invalidation, ModelCallback
Constant Summary
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- @@memoized_columns =
Hash.new { |h, k| h[k] = [Set.new, Set.new] }
Class Method Summary
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Instance Method Summary
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Class Method Details
.create_memo(model_class, **extra_props) ⇒ Object
extra_props are considered as AND conditions on the model class
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# File 'lib/redis_memo/memoize_query.rb', line 67
def self.create_memo(model_class, **)
using_active_record!(model_class)
keys = .keys.sort
if !keys.empty? && !memoized_columns(model_class).include?(keys)
raise(
RedisMemo::ArgumentError,
"'#{model_class.name}' has not memoized columns: #{keys}",
)
end
.each do |key, value|
column_name = key.to_s
[key] =
if model_class.defined_enums.include?(column_name)
enum_mapping = model_class.defined_enums[column_name]
(enum_mapping[value.to_s] || value).to_s
else
value.to_s
end
end
RedisMemo::Memoizable.new(
__redis_memo_memoize_query_table_name__: model_class.table_name,
**,
)
end
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.invalidate(*records) ⇒ Object
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# File 'lib/redis_memo/memoize_query.rb', line 108
def self.invalidate(*records)
RedisMemo::Memoizable.invalidate(
records.map { |record| to_memos(record) }.flatten,
)
end
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.invalidate_all(model_class) ⇒ Object
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# File 'lib/redis_memo/memoize_query.rb', line 99
def self.invalidate_all(model_class)
RedisMemo::Tracer.trace(
'redis_memo.memoizable.invalidate_all',
model_class.name,
) do
RedisMemo::Memoizable.invalidate([model_class.redis_memo_class_memoizable])
end
end
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.memoized_columns(model_or_table, editable_only: false) ⇒ Object
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# File 'lib/redis_memo/memoize_query.rb', line 61
def self.memoized_columns(model_or_table, editable_only: false)
table = model_or_table.is_a?(Class) ? model_or_table.table_name : model_or_table
@@memoized_columns[table.to_sym][editable_only ? 1 : 0]
end
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.to_memos(record) ⇒ Object
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# File 'lib/redis_memo/memoize_query.rb', line 114
def self.to_memos(record)
memos_to_invalidate = memoized_columns(record.class).map do |columns|
props = {}
columns.each do |column|
props[column] = record.send(column)
end
create_memo(record.class, **props)
end
if !record.saved_changes.empty? && !record.saved_changes.include?(record.class.primary_key)
previous_values = {}
record.saved_changes.each do |column, (previous_value, _)|
previous_values[column.to_sym] = previous_value
end
memoized_columns(record.class, editable_only: true).each do |columns|
props = previous_values.slice(*columns)
next if props.empty?
columns.each do |column|
next if props.include?(column)
props[column] = record.send(column)
end
memos_to_invalidate << create_memo(record.class, **props)
end
end
memos_to_invalidate
end
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.using_active_record!(model_class) ⇒ Object
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# File 'lib/redis_memo/memoize_query.rb', line 49
def self.using_active_record!(model_class)
unless using_active_record?(model_class)
raise RedisMemo::ArgumentError, "'#{model_class.name}' does not use ActiveRecord"
end
end
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.using_active_record?(model_class) ⇒ Boolean
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# File 'lib/redis_memo/memoize_query.rb', line 55
def self.using_active_record?(model_class)
model_class.respond_to?(:<) && model_class < ActiveRecord::Base
end
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Instance Method Details
#memoize_table_column(*raw_columns, editable: true) ⇒ Object
Only editable columns will be used to create memos that are invalidatable after each record save