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Versions: 23
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Contents
module Bmg
module Sql
module SelectList
include Expr
def desaliaser(for_predicate = false)
->(a){
item = sexpr_body.find{|item| item.as_name.to_s == a.to_s }
return nil unless left = item && item.left
return left unless for_predicate
case left.first
when :literal
Predicate::Grammar.sexpr([:literal, left.last])
when :qualified_name
Predicate::Grammar.sexpr([:qualified_identifier, left.qualifier.to_sym, left.as_name.to_sym])
else
raise "Unexpected select_item `#{left}`"
end
}
end
def is_table_dee?
Builder::IS_TABLE_DEE == self
end
def knows?(as_name)
find_child{|child| child.as_name == as_name }
end
def to_attr_list
sexpr_body.map{|a| a.as_name.to_sym }
end
def to_sql(buffer, dialect)
sexpr_body.each_with_index do |item,index|
buffer << COMMA << SPACE unless index == 0
item.to_sql(buffer, dialect)
end
buffer
end
end # module SelectList
end # module Sql
end # module Bmg
Version data entries
23 entries across 23 versions & 1 rubygems