Class: Hotdog::Commands::Search::TagGlobExpressionNode

Inherits:
TagExpressionNode show all
Defined in:
lib/hotdog/commands/search.rb

Instance Attribute Summary

Attributes inherited from TagExpressionNode

#attribute, #identifier

Instance Method Summary collapse

Methods inherited from TagExpressionNode

#attribute?, #initialize

Constructor Details

This class inherits a constructor from Hotdog::Commands::Search::TagExpressionNode

Instance Method Details

#evaluate(environment) ⇒ Object 



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# File 'lib/hotdog/commands/search.rb', line 253

def evaluate(environment)
  if attribute?
    values = environment.execute(<<-EOS, identifier, attribute).map { |row| row.first }
      SELECT DISTINCT hosts_tags.host_id FROM hosts_tags
        INNER JOIN tags ON hosts_tags.tag_id = tags.id
          WHERE LOWER(tags.name) GLOB LOWER(?) AND LOWER(tags.value) GLOB LOWER(?);
    EOS
  else
    values = environment.execute(<<-EOS, identifier, identifier, identifier).map { |row| row.first }
      SELECT DISTINCT hosts_tags.host_id FROM hosts_tags
        INNER JOIN hosts ON hosts_tags.host_id = hosts.id
        INNER JOIN tags ON hosts_tags.tag_id = tags.id
          WHERE LOWER(hosts.name) GLOB LOWER(?) OR LOWER(tags.name) GLOB LOWER(?) OR LOWER(tags.value) GLOB LOWER(?);

    EOS
  end
  if not environment.fixed_string? and values.empty?
    # fallback to glob expression
    identifier_glob = identifier.gsub(/[-.\/_]/, "?")
    if identifier != identifier_glob
      if attribute?
        attribute_glob = attribute.gsub(/[-.\/:_]/, "?")
        environment.logger.info("fallback to glob expression: %s:%s" % [identifier_glob, attribute_glob])
      else
        attribute_glob = nil
        environment.logger.info("fallback to glob expression: %s" % [identifier_glob])
      end
      values = TagGlobExpressionNode.new(identifier_glob, attribute_glob).evaluate(environment)
    end
  end
  values
end