Module: YamlStore::EvalBased

Included in:
YamlStore
Defined in:
lib/yaml_store.rb

Instance Method Summary collapse

Instance Method Details

#fetch(all_or_first = :all) ⇒ Object 



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# File 'lib/yaml_store.rb', line 74

def fetch(all_or_first=:all)
  filter = conditions.empty?? 'true' : conditions.join(' && ')
  reset_conditions!

  method = all_or_first == :all ? :select : :detect
  records.send(method) do |record|
    eval(filter)
  end
end

#having(property, value = :any) ⇒ Object 



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# File 'lib/yaml_store.rb', line 50

def having(property, value=:any)
  case value
  when :any
    conditions << "record.has_property?(#{property.inspect})"
  when /^(<|<=|>|>=|!=|=)\s*(\d+\.?\d*)$/ # equality and comparison statements
    value = "=#{value}" if $1 == '=' # ensure two equal signs (to allow for '= 7.1')
    conditions << "(Numeric === record.#{property} && record.#{property}.to_f #{value})"
  when Regexp
    conditions << "(record.#{property} || '') =~ #{value.inspect}"  
  when Array
    conditions << "#{value.inspect}.include?(record.#{property})"
  else
    conditions << "record.#{property} == #{value.inspect}"
  end

  self  
end

#not_having(property, value = :any) ⇒ Object 



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# File 'lib/yaml_store.rb', line 68

def not_having(property, value=:any)
  having(property, value)
  conditions[-1] = "!(#{conditions[-1]})"
  self
end