Class: Teton::Db

Inherits:
Object
  • Object
show all
Defined in:
lib/teton/db.rb

Overview

The main interface for any store backend.

Constant Summary collapse

DEFAULT_SEPARATOR = 
'/'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(separator: DEFAULT_SEPARATOR, store: Stores::Memory.new) ⇒ Db

Returns a new instance of Db.

Raises:

  • (ArgumentError) 


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# File 'lib/teton/db.rb', line 14

def initialize(separator: DEFAULT_SEPARATOR, store: Stores::Memory.new)
  raise ArgumentError, 'separator is required' if separator.to_s.empty?

  @separator = separator.to_s
  @store     = store

  freeze
end

Instance Attribute Details

#separator ⇒ Object (readonly)

Returns the value of attribute separator.



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# File 'lib/teton/db.rb', line 12

def separator
  @separator
end

#store ⇒ Object (readonly)

Returns the value of attribute store.



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# File 'lib/teton/db.rb', line 12

def store
  @store
end

Instance Method Details

#count(key) ⇒ Object 



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# File 'lib/teton/db.rb', line 45

def count(key)
  store.count(key(key))
end

#del(key) ⇒ Object 



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# File 'lib/teton/db.rb', line 41

def del(key)
  tap { store.del(key(key)) }
end

#get(key, limit: nil, skip: nil) ⇒ Object 



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# File 'lib/teton/db.rb', line 33

def get(key, limit: nil, skip: nil)
  store.get(
    key(key),
    limit: zero_floor_or_nil(limit),
    skip: zero_floor_or_nil(skip)
  )
end

#set(key, data) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/teton/db.rb', line 23

def set(key, data)
  key = key(key)

  raise ArgumentError, "key: #{key} does not point to an entry" unless key.entry?

  store.set(key, string_keys_and_values(data))

  self
end