Sha256: a50eef3a35c73be249b0c31ce10ecda99965351f0226866b6669bba96b428c13
Contents?: true
Size: 1.89 KB
Versions: 22
Compression:
Stored size: 1.89 KB
Contents
class Card::Query
class ValueClause < Clause
def initialize clause, cardclause
@cardclause = cardclause
# bare value shortcut
@clause = case clause
when ValueClause; clause.instance_variable_get('@clause') # FIXME what a hack (what's this for?)
when Array; clause
when String; ['=', clause]
when Integer; ['=', clause]
else raise("Invalid Condition Clause #{clause.inspect}")
end
# operator aliases
@clause[0] = @clause[0].to_s
if target = OPERATORS[@clause[0]]
@clause[0] = target
end
# check valid operator
raise("Invalid Operator #{@clause[0]}") unless OPERATORS.has_key?(@clause[0])
# handle IN #FIXME -- shouldn't this handle "not in", too?
if @clause[0]=='in' and !@clause[1].is_a?(CardClause) and !@clause[1].is_a?(RefClause)
@clause = [@clause[0], @clause[1..-1]]
end
end
def op
@clause[0]
end
def sqlize(v)
case v
when CardClause, RefClause, SqlCond; v.to_sql
when Array; "(" + v.flatten.collect {|x| sqlize(x)}.join(',') + ")"
else quote(v.to_s)
end
end
def to_sql field
op,v = @clause
#warn "to_sql(#{field}), #{op}, #{v}, #{@cardclause.inspect}"
v=@cardclause.selfname if v=='_self'
table = @cardclause.table_alias
#warn "to_sql #{field}, #{v} (#{op})"
field, v = case field
when "cond"; return "(#{sqlize(v)})"
when "name"; ["#{table}.key", [v].flatten.map(&:to_name).map(&:key)]
when "content"; ["#{table}.db_content", v]
else; ["#{table}.#{safe_sql(field)}", v]
end
v = v[0] if Array===v && v.length==1 && op != 'in'
if op=='~'
cxn, v = match_prep(v)
%{#{field} #{cxn.match(sqlize(v))}}
else
"#{field} #{op} #{sqlize(v)}"
end
end
end
end
Version data entries
22 entries across 22 versions & 2 rubygems