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Versions: 8
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Stored size: 1.83 KB
Contents
class Card::Query
class ValueSpec < Spec
def initialize spec, cardspec
@cardspec = cardspec
# bare value shortcut
@spec = case spec
when ValueSpec; spec.instance_variable_get('@spec') # FIXME what a hack (what's this for?)
when Array; spec
when String; ['=', spec]
when Integer; ['=', spec]
else raise("Invalid Condition Spec #{spec.inspect}")
end
# operator aliases
@spec[0] = @spec[0].to_s
if target = OPERATORS[@spec[0]]
@spec[0] = target
end
# check valid operator
raise("Invalid Operator #{@spec[0]}") unless OPERATORS.has_key?(@spec[0])
# handle IN #FIXME -- shouldn't this handle "not in", too?
if @spec[0]=='in' and !@spec[1].is_a?(CardSpec) and !@spec[1].is_a?(RefSpec)
@spec = [@spec[0], @spec[1..-1]]
end
end
def op
@spec[0]
end
def sqlize(v)
case v
when CardSpec, RefSpec, 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 = @spec
#warn "to_sql(#{field}), #{op}, #{v}, #{@cardspec.inspect}"
v=@cardspec.selfname if v=='_self'
table = @cardspec.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,@cardspec)
%{#{field} #{cxn.match(sqlize(v))}}
else
"#{field} #{op} #{sqlize(v)}"
end
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems