Class: HSQL::Query

Inherits:
Struct
  • Object
show all
Defined in:
lib/hsql/query.rb

Overview

PgQuery uses Postgres’ own parser to parse and then deparse each query.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#ast ⇒ Object

Returns the value of attribute ast

Returns:

  • (Object) —

    the current value of ast



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# File 'lib/hsql/query.rb', line 4

def ast
  @ast
end

Class Method Details

.parse(source) ⇒ Object

Returns a list of queries found in the source SQL



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# File 'lib/hsql/query.rb', line 6

def self.parse(source)
  # Splits on semicolons at the end of the line, eliding any comment that
  # might be there.
  PgQuery.parse(source).parsetree.map do |ast|
    Query.new(ast)
  end
end

Instance Method Details

#to_s ⇒ Object Also known as: to_sql

Show the parsed query as reconstructed SQL



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# File 'lib/hsql/query.rb', line 15

def to_s
  PgQuery::Deparse.from ast
end