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

Inherits:

TagExpressionNode

• Object
• ExpressionNode
• TagExpressionNode
• Hotdog::Commands::Search::TagGlobExpressionNode

Defined in:

lib/hotdog/commands/search.rb

Instance Attribute Summary

Attributes inherited from TagExpressionNode

#attribute, #identifier

Instance Method Summary

• #evaluate(environment) ⇒ Object

Methods inherited from TagExpressionNode

#attribute?, #identifier?, #initialize

Constructor Details

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

Instance Method Details

#evaluate(environment) ⇒ Object

# File 'lib/hotdog/commands/search.rb', line 322

def evaluate(environment)
  if identifier?
    if attribute?
      case identifier
      when /\Ahost\z/i
        values = environment.execute("          SELECT hosts.id FROM hosts\n            WHERE LOWER(hosts.name) GLOB LOWER(?);\n        EOS\n      else\n        values = environment.execute(<<-EOS, identifier, attribute).map { |row| row.first }\n          SELECT DISTINCT hosts_tags.host_id FROM hosts_tags\n            INNER JOIN tags ON hosts_tags.tag_id = tags.id\n              WHERE LOWER(tags.name) GLOB LOWER(?) AND LOWER(tags.value) GLOB LOWER(?);\n        EOS\n      end\n    else\n      values = environment.execute(<<-EOS, identifier, identifier, identifier).map { |row| row.first }\n        SELECT DISTINCT hosts_tags.host_id FROM hosts_tags\n          INNER JOIN hosts ON hosts_tags.host_id = hosts.id\n          INNER JOIN tags ON hosts_tags.tag_id = tags.id\n            WHERE LOWER(hosts.name) GLOB LOWER(?) OR LOWER(tags.name) GLOB LOWER(?) OR LOWER(tags.value) GLOB LOWER(?);\n      EOS\n    end\n  else\n    if attribute?\n      values = environment.execute(<<-EOS, attribute).map { |row| row.first }\n        SELECT DISTINCT hosts_tags.host_id FROM hosts_tags\n          INNER JOIN tags ON hosts_tags.tag_id = tags.id\n            WHERE LOWER(tags.value) GLOB LOWER(?);\n      EOS\n    else\n      values = []\n    end\n  end\n  if not environment.fixed_string? and values.empty?\n    # fallback to glob expression\n    identifier_glob = identifier.gsub(/[-.\\/_]/, \"?\") if identifier?\n    attribute_glob = attribute.gsub(/[-.\\/:_]/, \"?\") if attribute?\n    if (identifier? and identifier != identifier_glob) or (attribute? and attribute != attribute_glob)\n      environment.logger.info(\"fallback to glob expression: %s:%s\" % [identifier_glob, attribute_glob])\n      values = TagGlobExpressionNode.new(identifier_glob, attribute_glob).evaluate(environment)\n    end\n  end\n  values\nend\n", attribute).map { |row| row.first }