class Seaquel::Statement::Join
A join clause inside an SQL statement.
Attributes
ons[R]
tables[R]
Public Class Methods
new(tables)
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# File lib/seaquel/statement/join.rb, line 10 def initialize tables @tables = AST::List.new(tables) @ons = AST::JoinOp.new(:and, []) end
Public Instance Methods
convert(conversion_helper)
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Turns a join statement into SQL by invoking conversion_helper on the right parts.
@param conversion_helper [#convert] instance of a class that implements
a #convert method that turns expressions into SQL.
@return [String] SQL string for this join
# File lib/seaquel/statement/join.rb, line 27 def convert conversion_helper parts = [] parts << 'INNER JOIN' parts << conversion_helper.convert(tables) parts << 'ON' parts << conversion_helper.convert(ons) end
on(*exps)
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# File lib/seaquel/statement/join.rb, line 16 def on *exps ons.concat(*exps) end