Class: Blendris::RedisReference

Inherits:
RedisReferenceBase show all
Includes:
RedisNode
Defined in:
lib/blendris/reference.rb

Overview

RedisReference is a wrapper to a Redis string value and serves as a pointer to another blendris object.

Instance Attribute Summary

Attributes included from RedisNode

#key

Instance Method Summary collapse

Methods included from RedisNode

#clear, #exists?, #initialize, #notify_changed, #rename, #type

Methods included from RedisAccessor

database=, flushdb, #generate_key, #in_temporary_set, redis, #redis

Methods included from Utils

#blank, #camelize, #constantize, #sanitize_key

Methods inherited from RedisReferenceBase

#apply_reverse_add, #apply_reverse_delete, cast_from_redis, cast_to_redis, #initialize

Instance Method Details

#assign_ref(value) ⇒ Object 



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# File 'lib/blendris/reference.rb', line 40

def assign_ref(value)
  self.set value
end

#get ⇒ Object 



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# File 'lib/blendris/reference.rb', line 36

def get
  self.class.cast_from_redis ref.get
end

#ref ⇒ Object 



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# File 'lib/blendris/reference.rb', line 10

def ref
  @ref ||= RedisString.new(@key)
end

#references(value) ⇒ Object 



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# File 'lib/blendris/reference.rb', line 48

def references(value)
  refval = ref.get

  return true if refval.nil? && value.nil?
  return refval == value.key
end

#remove_ref(value) ⇒ Object 



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# File 'lib/blendris/reference.rb', line 44

def remove_ref(value)
  self.set nil
end

#set(obj) ⇒ Object 



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# File 'lib/blendris/reference.rb', line 14

def set(obj)
  old_obj = self.get if @reverse
  modified = false
  refkey = self.class.cast_to_redis(obj, @options)

  if refkey == nil
    ref.set nil
    modified = true
  elsif refkey != ref.get
    ref.set refkey
    apply_reverse_add obj
    modified = true
  end

  if modified
    apply_reverse_delete(old_obj)
    notify_changed
  end

  obj
end