Class: FilterLexer::Filter

Inherits:
Treetop::Runtime::SyntaxNode
  • Object
show all
Defined in:
lib/filter_lexer/nodes/filter.rb,
lib/filter_lexer/formatters/sql.rb

Overview

A filter is the core object of the lexer: an indentifier, an relational operator and data

Instance Method Summary collapse

Instance Method Details

#data ⇒ Object

The data element

Subclass of FilterLexer::Literal



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# File 'lib/filter_lexer/nodes/filter.rb', line 21

def data
	return elements[2]
end

#identifier ⇒ Object

The identifier element

Of type FilterLexer::Identifier



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# File 'lib/filter_lexer/nodes/filter.rb', line 7

def identifier
	return elements[0]
end

#operator ⇒ Object

The operator element

Subclass of FilterLexer::RelationalOperator



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# File 'lib/filter_lexer/nodes/filter.rb', line 14

def operator
	return elements[1]
end

#query_string ⇒ Object 



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# File 'lib/filter_lexer/formatters/sql.rb', line 27

def query_string
	return "#{identifier.sql} #{operator.sql} ?"
end

#query_variables ⇒ Object 



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# File 'lib/filter_lexer/formatters/sql.rb', line 31

def query_variables
	return [data.data]
end