Module: Moneta::CreateSupport Private

Included in:

Adapters::LRUHash, Adapters::Memory, WeakCreate

Defined in:

lib/moneta/mixins.rb

Overview

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

Implements simple create using key? and store.

This is sufficient for non-shared stores or if atomicity is not required.

Class Method Summary

• .included(base) ⇒ Object private

Instance Method Summary

• #create(key, value, options = {}) ⇒ Boolean

  Atomically sets a key to value if it’s not set.

Class Method Details

.included(base) ⇒ 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.

# File 'lib/moneta/mixins.rb', line 251

def self.included(base)
  base.supports(:create) if base.respond_to?(:supports)
end

Instance Method Details

#create(key, value, options = {}) ⇒ Boolean

Note:

Not every Moneta store implements this method, a NotImplementedError is raised if it is not supported.

Atomically sets a key to value if it’s not set.

Parameters:

• key (Object)
• value (Object)
• options (Hash) (defaults to: {})

Options Hash (options):

• :expires (Integer) —

  Update expiration time (See Expires)

• :raw (Boolean) —

  Raw access without value transformation (See Transformer)

• :prefix (String) —

  Prefix key (See Transformer)

Returns:

• (Boolean) —

  key was set

# File 'lib/moneta/mixins.rb', line 242

def create(key, value, options = {})
  if key? key
    false
  else
    store(key, value, options)
    true
  end
end