Class: PrestoCache::Memory::Store

Inherits:

Object

• Object
• PrestoCache::Memory::Store

show all

Defined in:

lib/presto/cache/memory.rb

Instance Attribute Summary (collapse)

• - (Object) serialize readonly

  Returns the value of attribute serialize.

Instance Method Summary (collapse)

• - (Object) [](key)
• - (Object) []=(key, val)
• - (Object) delete(k)
• - (Object) drop
• - (Boolean) dropped?
• - (Object) filter(filters = {})
• - (Store) initialize constructor

  A new instance of Store.

• - (Object) keys
• - (Object) size
• - (Object) truncate

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# File 'lib/presto/cache/memory.rb', line 14

def initialize
  @store = Hash.new
end

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# File 'lib/presto/cache/memory.rb', line 12

def serialize
  @serialize
end

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# File 'lib/presto/cache/memory.rb', line 22

def [] key
  @store[key]
end

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# File 'lib/presto/cache/memory.rb', line 18

def []= key, val
  @store[key] = val
end

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# File 'lib/presto/cache/memory.rb', line 52

def delete k
  @store.delete k
end

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# File 'lib/presto/cache/memory.rb', line 60

def drop
  @store.clear && @dropped = true
end

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# File 'lib/presto/cache/memory.rb', line 64

def dropped?
  @dropped
end

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# File 'lib/presto/cache/memory.rb', line 26

def filter filters = {}
  key, val = filters.values_at(API::KEY, API::VAL)
  cmp = lambda { |f, v| f.is_a?(Regexp) ? v =~ f : v == f }
  items = lambda { key ? @store.select { |k, v| cmp.call(key, k) } : @store }
  push = lambda { |k, v| {API::KEY => k, API::VAL => v} }
  filter_by_key = lambda do
    results = []
    items.call.each_pair { |k, v| results << push.call(k, v) }
    results
  end
  filter_by_key_and_val = lambda do
    results = []
    items.call.each_pair { |k, v| cmp.call(val, v) && results << push.call(k, v) }
    results
  end
  val ? filter_by_key_and_val.call : filter_by_key.call
end

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# File 'lib/presto/cache/memory.rb', line 48

def keys
  @store.keys
end

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# File 'lib/presto/cache/memory.rb', line 44

def size
  @store.size
end

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# File 'lib/presto/cache/memory.rb', line 56

def truncate
  @store.clear
end