Class: Juno::Base

Inherits:

Object

• Object
• Juno::Base

Defined in:

lib/juno/base.rb

Overview

Simple interface to key/value stores with Hash-like interface.

Direct Known Subclasses

Adapters::ActiveRecord, Adapters::Cassandra, Adapters::Couch, Adapters::DataMapper, Adapters::File, Adapters::Fog, Adapters::MemcachedDalli, Adapters::MemcachedNative, Adapters::Memory, Adapters::Mongo, Adapters::Null, Adapters::PStore, Adapters::Redis, Adapters::Riak, Adapters::Sequel, Adapters::Sqlite, Cache, Proxy, Stack

Instance Method Summary

• #[](key) ⇒ Object

  Fetch value with key.

• #[]=(key, value) ⇒ Object

  Store value with key.

• #close ⇒ Object

  Explicitly close the store.

• #fetch(key, default = nil, options = nil) ⇒ Object

  Fetch value with key.

Instance Method Details

#[](key) ⇒ Object

Fetch value with key. Return nil if the key doesn’t exist

Parameters:

• key (Object)

Returns:

• (Object) —

  value

# File 'lib/juno/base.rb', line 38

def [](key)
  load(key)
end

#[]=(key, value) ⇒ Object

Store value with key

Parameters:

• key (Object)
• value (Object)

Returns:

• value

# File 'lib/juno/base.rb', line 48

def []=(key, value)
  store(key, value)
end

#close ⇒ Object

Explicitly close the store

# File 'lib/juno/base.rb', line 7

def close
end

#fetch(key, default = nil, options = nil) ⇒ Object

Fetch value with key

This is a overloaded method:

• fetch(key, options = {}, &block) retrieve a key. if the key is not available, execute the block and return its return value.

• fetch(key, value, options = {}) retrieve a key. if the key is not available, return the value.

Parameters:

• key (Object)
• default (Object) (defaults to: nil) —

  Default value

• options (Hash) (defaults to: nil)

Returns:

• (Object) —

  value from store

# File 'lib/juno/base.rb', line 24

def fetch(key, default = nil, options = nil)
  if block_given?
    raise ArgumentError, 'Only one argument accepted if block is given' if options
    load(key, default || {}) || yield(key)
  else
    load(key, options || {}) || default
  end
end