Class: SQLTree::Node::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/sql_tree/node.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.[](sql, options = {}) ⇒ Object

Parses a string, expecting it to be parsable to an instance of the current class.



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# File 'lib/sql_tree/node.rb', line 32

def self.[](sql, options = {})
  parser = SQLTree::Parser.new(sql, options)
  self.parse(parser)
end

.parse(tokens) ⇒ Object

This method should be implemented by a subclass.



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# File 'lib/sql_tree/node.rb', line 26

def self.parse(tokens)
  raise 'Only implemented in subclasses!'
end

Instance Method Details

#inspect ⇒ Object

Pretty prints this instance for inspection



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# File 'lib/sql_tree/node.rb', line 10

def inspect
  "#{self.class.name}[#{self.to_sql}]"
end

#quote_str(str) ⇒ Object

Quotes a string so that it can be used within an SQL query.



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# File 'lib/sql_tree/node.rb', line 21

def quote_str(str)
  "'#{str.gsub(/\'/, "''")}'"
end

#quote_var(name) ⇒ Object

Quotes a variable name so that it can be safely used within SQL queries.



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# File 'lib/sql_tree/node.rb', line 16

def quote_var(name)
  "\"#{name}\""
end