Class: Hotdog::Expression::StringHostOrTagNode

Inherits:
StringExpressionNode show all
Defined in:
lib/hotdog/expression/semantics.rb

Instance Attribute Summary

Attributes inherited from TagExpressionNode

#separator, #tagname, #tagvalue

Instance Method Summary collapse

Methods inherited from TagExpressionNode

#==, #dump, #evaluate, #maybe_glob, #maybe_query, #maybe_query_without_condition, #optimize, #separator?, #tagname?, #tagvalue?, #to_glob

Methods inherited from ExpressionNode

#==, #compact, #dump, #evaluate, #optimize

Constructor Details

#initialize(tagname, separator = nil, options = {}) ⇒ StringHostOrTagNode

Returns a new instance of StringHostOrTagNode.



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# File 'lib/hotdog/expression/semantics.rb', line 881

def initialize(tagname, separator=nil, options={})
  super(tagname.to_s, nil, separator, options)
end

Instance Method Details

#condition(options = {}) ⇒ Object 



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# File 'lib/hotdog/expression/semantics.rb', line 885

def condition(options={})
  "hosts.name = ? OR tags.name = ? OR tags.value = ?"
end

#condition_tables(options = {}) ⇒ Object 



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# File 'lib/hotdog/expression/semantics.rb', line 889

def condition_tables(options={})
  [:hosts, :tags]
end

#condition_values(options = {}) ⇒ Object 



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# File 'lib/hotdog/expression/semantics.rb', line 893

def condition_values(options={})
  [tagname, tagname, tagname]
end

#maybe_fallback(options = {}) ⇒ Object 



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# File 'lib/hotdog/expression/semantics.rb', line 897

def maybe_fallback(options={})
  fallback = GlobHostOrTagNode.new(to_glob(tagname), separator)
  query = fallback.maybe_query(options)
  if query
    QueryExpressionNode.new(query, fallback.condition_values(options))
  else
    nil
  end
end