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863ebca9cd | |||
09dfa782a8 |
1
Rakefile
1
Rakefile
|
@ -15,7 +15,6 @@ begin
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|||
gem.add_dependency 'activerecord'
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gem.add_dependency 'activesupport'
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gem.add_dependency 'json'
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gem.add_dependency 'methodphitamine'
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end
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Jeweler::GemcutterTasks.new
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rescue LoadError
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|
2
TODO
2
TODO
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@ -1 +1,3 @@
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1) gem-plugin
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2) deprecated-warnings rails 3.1:
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* DEPRECATION WARNING: primary_key_name is deprecated and will be removed from Rails 3.2 (use foreign_key instead).
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|
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@ -43,9 +43,9 @@ class SmqlToAR
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# Die eigentliche Exception wird in @data[:exception] hinterlegt.
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class SubSMQLError < SMQLError
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def initialize query, model, exception
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ex = {:class => exception.class, :message => exception.message}
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ex = {class: exception.class, message: exception.message}
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ex[:data] = exception.data if exception.respond_to? :data
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super :query => query, :model => model.to_s, :exception => ex
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super query: query, model: model.to_s, exception: ex
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set_backtrace exception.backtrace
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end
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end
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@ -55,49 +55,49 @@ class SmqlToAR
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# Malformed ColOp
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class UnexpectedColOpError < ParseError
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def initialize model, colop, val
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super :got => colop, :val => val, :model => model.to_s
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super got: colop, val: val, model: model.to_s
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end
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end
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class UnexpectedError < ParseError
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def initialize model, colop, val
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super :got => {colop => val}, :model => model.to_s
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super got: {colop => val}, model: model.to_s
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end
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end
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class NonExistingSelectableError < SMQLError
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def initialize got
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super :got => got
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super got: got
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end
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end
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class NonExistingColumnError < SMQLError
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def initialize expected, got
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super :expected => expected, :got => got
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super expected: expected, got: got
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end
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end
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class NonExistingRelationError < SMQLError
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def initialize expected, got
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super :expected => expected, :got => got
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super expected: expected, got: got
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end
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end
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class ProtectedColumnError < SMQLError
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def initialize protected_column
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super :protected_column => protected_column
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super protected_column: protected_column
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end
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end
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class RootOnlyFunctionError < SMQLError
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def initialize path
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super :path => path
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super path: path
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end
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end
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class ConColumnError < SMQLError
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def initialize expected, got
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super :expected => expected, :got => got
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super expected: expected, got: got
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end
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end
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|
@ -107,9 +107,8 @@ class SmqlToAR
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# Model der Relation `rel` von `model`
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def self.model_of model, rel
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rel = rel.to_sym
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r = model.reflections[ rel].andand.klass
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r.nil? && :self == rel ? model : r
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r = model.reflections[ rel.to_sym].andand.klass
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r.nil? && rel === :self ? model : r
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end
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# Eine Spalte in einer Tabelle, relativ zu `Column#model`.
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|
@ -120,10 +119,43 @@ class SmqlToAR
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attr_reader :path, :col
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attr_accessor :model
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class Col
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include Comparable
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attr_accessor :col, :as
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def initialize col, as = nil
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if col.kind_of? Col
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@col, @as = col.col, col.as
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elsif /^(.*?)\[(.*)\]$/ =~ col.to_s
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@col, @as = $1, $2
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else
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@col, @as = col.to_s, as.to_s
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@as = nil if @as.blank?
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end
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end
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def to_s() @col end
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def to_sym() to_s.to_sym end
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def inspect() "#{@col}[@#{@as}]" end
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def to_alias() "#{@col}[#{@as}]" end
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|
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def == other
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other = Col.new other
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@col == other.col && @as == other.as
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end
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def === other
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@col == Col.new( other).col
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end
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end
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def initialize model, *col
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@model = model
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@last_model = nil
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*@path, @col = *Array.wrap( col).collect( &it.to_s.split( /[.\/]/)).flatten.collect( &:to_sym).reject( &it==:self)
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*@path, @col = *Array.wrap( col).
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collect {|x| x.to_s.split /[.\/]/ }.
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flatten.
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collect( &Col.method( :new)).
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reject {|x| x === :self }
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end
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def last_model
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|
@ -133,8 +165,7 @@ class SmqlToAR
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def each
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model = @model
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@path.each do |rel|
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rel = rel.to_sym
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unless :self == rel
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unless rel === :self
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model = SmqlToAR.model_of model, rel
|
||||
return false unless model
|
||||
yield rel, model
|
||||
|
@ -169,6 +200,7 @@ class SmqlToAR
|
|||
exe.call pp, model
|
||||
end
|
||||
end
|
||||
|
||||
def self?() !@col end
|
||||
def length() @path.length+(self.self? ? 0 : 1) end
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||||
def size() @path.size+(self.self? ? 0 : 1) end
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||||
|
@ -190,10 +222,8 @@ class SmqlToAR
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|||
SmqlToAR.logger = ::Rails.logger
|
||||
end
|
||||
end
|
||||
else
|
||||
require 'logger'
|
||||
@@logger = Logger.new $stdout
|
||||
end
|
||||
@@logger = ::Rails.logger || begin require 'logger'; Logger.new( $stdout) end
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||||
|
||||
class <<self
|
||||
def logger=(logger) @@logger = logger end
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||||
|
@ -213,8 +243,8 @@ class SmqlToAR
|
|||
refls = model.respond_to?( :reflections) && model.reflections
|
||||
refls && refls.each do |name, refl|
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r[model.name][name] = case refl
|
||||
when ActiveRecord::Reflection::ThroughReflection then {:macro => refl.macro, :model => refl.klass.name, :through => refl.through_reflection.name}
|
||||
when ActiveRecord::Reflection::AssociationReflection then {:macro => refl.macro, :model => refl.klass.name}
|
||||
when ActiveRecord::Reflection::ThroughReflection then {macro: refl.macro, model: refl.klass.name, through: refl.through_reflection.name}
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||||
when ActiveRecord::Reflection::AssociationReflection then {macro: refl.macro, model: refl.klass.name}
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||||
else raise "Ups: #{refl.class}"
|
||||
end
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||||
models.push refl.klass unless r.keys.include? refl.klass.name
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|
@ -224,35 +254,35 @@ class SmqlToAR
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|||
end
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||||
|
||||
def parse
|
||||
benchmark 'SMQL parse' do
|
||||
#benchmark 'SMQL parse' do
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||||
@conditions = ConditionTypes.try_parse @model, @query
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||||
end
|
||||
#end
|
||||
#p conditions: @conditions
|
||||
self
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||||
end
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||||
|
||||
def build prefix = nil
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||||
benchmark 'SMQL build query' do
|
||||
@builder = QueryBuilder.new @model, prefix
|
||||
def build
|
||||
#benchmark 'SMQL build query' do
|
||||
@builder = QueryBuilder.new @model
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table = @builder.base_table
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||||
@conditions.each &it.build( builder, table)
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||||
end
|
||||
@conditions.each {|condition| condition.build builder, table }
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||||
#end
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||||
#p builder: @builder
|
||||
self
|
||||
end
|
||||
|
||||
def ar
|
||||
@ar ||= benchmark 'SMQL ar' do
|
||||
@ar ||= #benchmark 'SMQL ar' do
|
||||
@builder.to_ar
|
||||
end
|
||||
#end
|
||||
end
|
||||
|
||||
def to_ar
|
||||
benchmark 'SMQL' do
|
||||
#benchmark 'SMQL' do
|
||||
parse
|
||||
build
|
||||
ar
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||||
end
|
||||
#end
|
||||
end
|
||||
|
||||
def self.to_ar *params
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||||
|
@ -262,8 +292,27 @@ class SmqlToAR
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|||
def self.reload_library
|
||||
lib_dir = File.dirname __FILE__
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||||
fj = lambda {|*a| File.join lib_dir, *a }
|
||||
load fj.call( 'smql_to_ar.rb')
|
||||
load fj.call( 'smql_to_ar', 'condition_types.rb')
|
||||
load fj.call( 'smql_to_ar', 'query_builder.rb')
|
||||
Object.send :remove_const, :SmqlToAR
|
||||
load fj[ 'smql_to_ar.rb']
|
||||
load fj[ 'smql_to_ar', 'condition_types.rb']
|
||||
load fj[ 'smql_to_ar', 'query_builder.rb']
|
||||
end
|
||||
|
||||
module ActiveRecordExtensions
|
||||
def self.included base
|
||||
base.extend ClassMethods
|
||||
end
|
||||
|
||||
module ClassMethods
|
||||
def smql *params
|
||||
SmqlToAR.to_ar self, *params
|
||||
end
|
||||
|
||||
def smql_protected
|
||||
[]
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
ActiveRecord::Base.send :include, SmqlToAR::ActiveRecordExtensions
|
||||
|
|
|
@ -14,6 +14,9 @@
|
|||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
# TODO:
|
||||
# * Array als Typ ist zu allgemein. Allgemeine Lösung gesucht, um die Typen im Array angeben zu können.
|
||||
|
||||
class SmqlToAR
|
||||
#############################################################################
|
||||
# Alle Subklassen (qualitativ: ConditionTypes::*), die als Superklasse Condition haben,
|
||||
|
@ -56,7 +59,7 @@ class SmqlToAR
|
|||
r = nil
|
||||
#p :try_parse => { :model => model, :colop => colop, :value => val }
|
||||
conditions.each do |c|
|
||||
raise_unless colop =~ /^(?:\d*:)?(.*?)(\W*)$/, UnexpectedColOpError.new( model, colop, val)
|
||||
raise_unless colop =~ /^(?:\d*:)?(.*?)((?:\W*(?!\])\W)?)$/, UnexpectedColOpError.new( model, colop, val)
|
||||
col, op = $1, $2
|
||||
col = split_keys( col).collect {|c| Column.new model, c }
|
||||
r = c.try_parse model, col, op, val
|
||||
|
@ -99,16 +102,17 @@ class SmqlToAR
|
|||
# Versuche das Objekt zu erkennen. Operator und Expected muessen passen.
|
||||
# Passt das Object, die Klasse instanzieren.
|
||||
def try_parse model, cols, op, val
|
||||
#p :self => name, :try_parse => op, :cols => cols, :with => self::Operator, :value => val, :expected => self::Expected, :model => model.name
|
||||
new model, cols, val if self::Operator === op and self::Expected.any?( &it === val)
|
||||
#p :class => self, :self => name, :try_parse => op, :cols => cols, :with => self::Operator, :value => val, :expected => self::Expected, :model => model.name
|
||||
new model, cols, val if self::Operator === op and self::Expected.any? {|x| x === val}
|
||||
end
|
||||
|
||||
def inspect
|
||||
"#{self.name}(:operator=>#{self::Operator.inspect}, :expected=>#{self::Expected.inspect}, :where=>#{self::Where.inspect})"
|
||||
"#{self.name}( :operator=>#{self::Operator.inspect}, :expected=>#{self::Expected.inspect}, :where=>#{self::Where.inspect})"
|
||||
end
|
||||
end
|
||||
|
||||
def initialize model, cols, val
|
||||
#p init: self, caller: caller
|
||||
@model, @cols = model, cols
|
||||
@value = case val
|
||||
when Hash, Range then val
|
||||
|
@ -149,9 +153,9 @@ class SmqlToAR
|
|||
# 2) {"givenname=", ["Peter", "Hans"]} #=> ( givenname = 'Peter' OR givenname = 'Hans' )
|
||||
# 3) {"givenname|surname=", ["Peter", "Mueller"]}
|
||||
# #=> ( givenname = 'Peter' OR surname = 'Peter' ) AND ( givenname = 'Mueller' OR surname = 'Mueller' )
|
||||
def build builder, table
|
||||
def condition_build builder, table
|
||||
values = Hash[ @value.collect {|value| [ builder.vid, value ] } ]
|
||||
values.each {|k, v| builder.wobs k.sym => v }
|
||||
values.each {|k, v| builder.wobs k.to_sym => v }
|
||||
if 1 == @cols.length
|
||||
@cols.each do |col|
|
||||
col.joins builder, table
|
||||
|
@ -159,25 +163,27 @@ class SmqlToAR
|
|||
builder.where values.keys.collect {|vid| self.class::Where % [ col, vid.to_s ] }
|
||||
end
|
||||
else
|
||||
b2 = SmqlToAR::And.new builder
|
||||
values.keys.each do |vid|
|
||||
builder.where @cols.collect {|col|
|
||||
b2.where SmqlToAR::Or[ *@cols.collect {|col|
|
||||
col.joins builder, table
|
||||
col = builder.column table+col.path, col.col
|
||||
self.class::Where % [ col, vid.to_s ]
|
||||
}
|
||||
}]
|
||||
end
|
||||
end
|
||||
self
|
||||
end
|
||||
alias build condition_build
|
||||
end
|
||||
|
||||
class NotInRange < Condition
|
||||
Operator = '!..'
|
||||
Where = "%s NOT BETWEEN %s AND %s"
|
||||
Where = '%s NOT BETWEEN %s AND %s'
|
||||
Expected = [Range, lambda {|val| Array === val && 2 == val.length } ]
|
||||
|
||||
def initialze model, cols, val
|
||||
if Array === val && 2 == val.length
|
||||
def initialize model, cols, val
|
||||
if Array === val
|
||||
f, l = val
|
||||
f, l = Time.parse(f), Time.parse(l) if f.kind_of? String
|
||||
val = f..l
|
||||
|
@ -185,23 +191,65 @@ class SmqlToAR
|
|||
super model, cols, val
|
||||
end
|
||||
|
||||
def build builder, table
|
||||
builder.wobs (v1 = builder.vid) => @value.begin, (v2 = builder.vid) => @value.end
|
||||
def not_in_range_build builder, table
|
||||
builder.wobs (v1 = builder.vid).to_sym => @value.begin, (v2 = builder.vid).to_sym => @value.end
|
||||
@cols.each do |col|
|
||||
col.joins builder, table
|
||||
builder.where self.class::Where % [ builder.column( table+col.path, col.col), v1, v2]
|
||||
end
|
||||
self
|
||||
end
|
||||
alias build not_in_range_build
|
||||
end
|
||||
InRange = simple_condition NotInRange, '..', "%s BETWEEN %s AND %s"
|
||||
InRange = simple_condition NotInRange, '..', '%s BETWEEN %s AND %s'
|
||||
|
||||
# Every key-pair will be ORed. No multiple values possible.
|
||||
class Overlaps < Condition
|
||||
Operator, Where = '<=>', '(%s, %s) OVERLAPS (%s, %s)'
|
||||
Expected = [Range, lambda {|val|
|
||||
Array === val && 2 == val.length &&
|
||||
[Time, Date, String].any? {|v|v===val[0]} &&
|
||||
[Numeric, String].any? {|v|v===val[1]}
|
||||
}]
|
||||
|
||||
def initialize model, cols, val
|
||||
if Array === val
|
||||
f = Time.parse( val[0]).localtime
|
||||
l = val[1]
|
||||
l = case l
|
||||
when String then Time.parse( l).localtime
|
||||
when Numeric then f+l
|
||||
else raise ArgumentError, "Unexpected type for end-value #{l.inspect}"
|
||||
end
|
||||
f += f.utc_offset
|
||||
l += l.utc_offset
|
||||
val = f.utc..l.utc
|
||||
end
|
||||
super model, cols, val
|
||||
end
|
||||
|
||||
def overlaps_build builder, table
|
||||
builder = Or.new builder
|
||||
builder.wobs (v1 = builder.vid).to_sym => @value.begin, (v2 = builder.vid).to_sym => @value.end
|
||||
v1 = "TIMESTAMP #{v1}"
|
||||
v2 = "TIMESTAMP #{v2}"
|
||||
@cols.each do |col|
|
||||
col.joins builder, table
|
||||
end.each_slice 2 do |f,s|
|
||||
builder.where self.class::Where % [
|
||||
builder.column( table+f.path, f.col), builder.column( table+s.path, s.col), v1, v2]
|
||||
end
|
||||
end
|
||||
alias build overlaps_build
|
||||
end
|
||||
NotOverlaps = simple_condition Overlaps, '<=>', 'NOT (%s, %s) OVERLAPS (%s, %s)'
|
||||
|
||||
class NotIn < Condition
|
||||
Operator = '!|='
|
||||
Where = "%s NOT IN (%s)"
|
||||
Expected = [Array]
|
||||
|
||||
def build builder, table
|
||||
def not_in_build builder, table
|
||||
builder.wobs (v = builder.vid).to_sym => @value
|
||||
@cols.each do |col|
|
||||
col.joins builder, table
|
||||
|
@ -209,6 +257,7 @@ class SmqlToAR
|
|||
end
|
||||
self
|
||||
end
|
||||
alias build not_in_build
|
||||
end
|
||||
|
||||
In = simple_condition NotIn, '|=', '%s IN (%s)', [Array]
|
||||
|
@ -217,19 +266,25 @@ class SmqlToAR
|
|||
NotEqual2 = simple_condition Condition, '<>', "%s <> %s", [Array, String, Numeric]
|
||||
GreaterThanOrEqual = simple_condition Condition, '>=', "%s >= %s", [Array, Numeric]
|
||||
LesserThanOrEqual = simple_condition Condition, '<=', "%s <= %s", [Array, Numeric]
|
||||
class StringTimeGreaterThanOrEqual < Condition
|
||||
Operator, Where, Expected = '>=', '%s >= %s', [Time, Date, String]
|
||||
def initialize model, cols, val
|
||||
super model, cols, Time.parse( val.to_s)
|
||||
end
|
||||
end
|
||||
StringTimeLesserThanOrEqual = simple_condition StringTimeGreaterThanOrEqual, '<=', "%s <= %s"
|
||||
|
||||
# Examples:
|
||||
# { 'articles=>' => { id: 1 } }
|
||||
# { 'articles=>' => [ { id: 1 }, { id: 2 } ] }
|
||||
class EqualJoin <Condition
|
||||
Operator = '=>'
|
||||
Expected = [Hash, lambda {|x| x.kind_of?( Array) and x.all?( &it.kind_of?( Hash))}]
|
||||
Expected = [Hash, lambda {|x| x.kind_of?( Array) and x.all? {|y| y.kind_of?( Hash) }}]
|
||||
|
||||
def initialize *pars
|
||||
super( *pars)
|
||||
@value = Array.wrap @value
|
||||
cols = {}
|
||||
p self: self, cols: @cols
|
||||
@cols.each do |col|
|
||||
col_model = col.relation
|
||||
cols[col] = [col_model] + @value.collect {|val| ConditionTypes.try_parse( col_model, val) }
|
||||
|
@ -241,18 +296,27 @@ class SmqlToAR
|
|||
raise_unless col.relation, NonExistingRelationError.new( %w[Relation], col)
|
||||
end
|
||||
|
||||
def build builder, table
|
||||
def equal_join_build builder, table
|
||||
if 2 < @cols.first.second.length
|
||||
b2, b3 = And, Or
|
||||
else
|
||||
b2, b3 = Or, And
|
||||
end
|
||||
b2 = b2.new builder
|
||||
@cols.each do |col, sub|
|
||||
model, *sub = sub
|
||||
t = table + col.path + [col.col]
|
||||
col.joins.each {|j, m| builder.joins table+j, m }
|
||||
col.joins builder, table
|
||||
builder.joins t, model
|
||||
b2 = 1 == sub.length ? builder : Or.new( builder)
|
||||
sub.each {|i| i.collect( &it.build( And.new( b2), t)); p 'or' => b2 }
|
||||
b4 = b3.new( b2)
|
||||
sub.each do |i|
|
||||
b5 = And.new b4
|
||||
i.collect {|j| j.build b5, t }
|
||||
end
|
||||
end
|
||||
ap '=>' => builder
|
||||
self
|
||||
end
|
||||
alias build equal_join_build
|
||||
end
|
||||
|
||||
# Takes to Queries.
|
||||
|
@ -267,6 +331,7 @@ class SmqlToAR
|
|||
# is, second is not allowed (limit and order must be in root) and this means something like
|
||||
# "Person must have the Article owned by Person which has 'some text' in content.
|
||||
# limit and order has no function in this query and this article needn't to be the last."
|
||||
=begin
|
||||
class SubEqualJoin < EqualJoin
|
||||
Operator = '()'
|
||||
Expected = [lambda {|x| x.kind_of?( Array) and (1..2).include?( x.length) and x.all?( &it.kind_of?( Hash))}]
|
||||
|
@ -274,31 +339,36 @@ class SmqlToAR
|
|||
def initialize model, cols, val
|
||||
super model, cols, val[1]
|
||||
# sub: model, subquery, sub(condition)
|
||||
@cols.each {|col, sub| sub[ 1...1] = SmqlToAR.new( col.relation, val[0]).parse }
|
||||
@cols.each {|col, sub| sub[ 1..-1] = SmqlToAR.new( col.relation, val[0]).parse, *sub[-1] }
|
||||
end
|
||||
|
||||
def verify_column col
|
||||
raise_unless col.child?, ConColumnError.new( [:Column], col)
|
||||
end
|
||||
|
||||
def build builder, table
|
||||
def sub_equal_join_build builder, table
|
||||
@cols.each do |col, sub|
|
||||
t = table+col.to_a
|
||||
builder.sub_joins t, col, *sub[0..1]
|
||||
sub[2..-1].each &it.build( builder, t)
|
||||
#ap sub: sub[2..-1]
|
||||
sub[2..-1].each {|x| x.build builder, t }
|
||||
end
|
||||
self
|
||||
end
|
||||
alias build sub_equal_join_build
|
||||
end
|
||||
=end
|
||||
|
||||
Equal = simple_condition Condition, '=', "%s = %s", [Array, String, Numeric]
|
||||
Equal2 = simple_condition Equal, '', "%s = %s", [String, Numeric]
|
||||
Equal = simple_condition Condition, '=', "%s = %s", [Array, String, Numeric, Date, Time]
|
||||
Equal2 = simple_condition Equal, '', "%s = %s", [String, Numeric, Date, Time]
|
||||
GreaterThan = simple_condition Condition, '>', "%s > %s", [Array, Numeric]
|
||||
StringTimeGreaterThan = simple_condition StringTimeGreaterThanOrEqual, '>', "%s > %s"
|
||||
LesserThan = simple_condition Condition, '<', "%s < %s", [Array, Numeric]
|
||||
StringTimeLesserThan = simple_condition StringTimeGreaterThanOrEqual, '<', "%s < %s"
|
||||
NotIlike = simple_condition Condition, '!~', "%s NOT ILIKE %s", [Array, String]
|
||||
Ilike = simple_condition Condition, '~', "%s ILIKE %s", [Array, String]
|
||||
Exists = simple_condition Condition, '', '%s IS NOT NULL', [true]
|
||||
NotExists = simple_condition Condition, '', '%s IS NULL', [false]
|
||||
Exists = simple_condition Condition, '', '%s IS NOT NULL', [TrueClass]
|
||||
NotExists = simple_condition Condition, '', '%s IS NULL', [FalseClass]
|
||||
|
||||
Join = simple_condition EqualJoin, '', nil, [Hash]
|
||||
InRange2 = simple_condition InRange, '', nil, [Range]
|
||||
|
@ -310,7 +380,7 @@ class SmqlToAR
|
|||
raise_unless col.exist_in? || SmqlToAR.model_of( col.last_model, col.col), NonExistingSelectableError.new( col)
|
||||
end
|
||||
|
||||
def build builder, table
|
||||
def select_build builder, table
|
||||
@cols.each do |col|
|
||||
if col.exist_in?
|
||||
col.joins builder, table
|
||||
|
@ -322,6 +392,7 @@ class SmqlToAR
|
|||
end
|
||||
self
|
||||
end
|
||||
alias build select_build
|
||||
end
|
||||
|
||||
class Functions < Condition
|
||||
|
@ -336,12 +407,11 @@ class SmqlToAR
|
|||
|
||||
class <<self
|
||||
def try_parse model, func, args
|
||||
SmqlToAR.logger.info( { try_parse: [func,args]}.inspect)
|
||||
self.new model, func, args if self::Name === func and self::Expected.any?( &it === args)
|
||||
self.new model, func, args if self::Name === func and self::Expected.any? {|x| x === args }
|
||||
end
|
||||
|
||||
def inspect
|
||||
"#{self.name}(:name=>#{self::Name}, :expected=>#{self::Expected})"
|
||||
"#{self.name}( :name=>#{self::Name}, :expected=>#{self::Expected})"
|
||||
end
|
||||
end
|
||||
|
||||
|
@ -371,40 +441,42 @@ class SmqlToAR
|
|||
super model, func, args
|
||||
end
|
||||
|
||||
def build builder, table
|
||||
def order_build builder, table
|
||||
return if @args.blank?
|
||||
@args.each do |o|
|
||||
col, o = o
|
||||
col.joins builder, table
|
||||
t = table + col.path
|
||||
raise_unless 1 == t.length, RootOnlyFunctionError.new( t)
|
||||
#raise_unless 1 == t.length, RootOnlyFunctionError.new( t)
|
||||
builder.order t, col.col, o
|
||||
end
|
||||
end
|
||||
alias build order_build
|
||||
end
|
||||
|
||||
class Limit < Function
|
||||
Name = :limit
|
||||
Expected = [Fixnum]
|
||||
|
||||
def build builder, table
|
||||
def limit_build builder, table
|
||||
raise_unless 1 == table.length, RootOnlyFunctionError.new( table)
|
||||
builder.limit @args
|
||||
builder.limit = Array.wrap(@args).first.to_i
|
||||
end
|
||||
alias build limit_build
|
||||
end
|
||||
|
||||
class Offset < Function
|
||||
Name = :offset
|
||||
Expected = [Fixnum]
|
||||
|
||||
def build builder, table
|
||||
def offset_build builder, table
|
||||
raise_unless 1 == table.length, RootOnlyFunctionError.new( table)
|
||||
builder.offset @args
|
||||
builder.offset = Array.wrap(@args).first.to_i
|
||||
end
|
||||
alias build offset_build
|
||||
end
|
||||
|
||||
def self.new model, col, val
|
||||
SmqlToAR.logger.info( { function: col.first.to_sym }.inspect)
|
||||
r = nil
|
||||
constants.each do |c|
|
||||
next if [:Function, :Where, :Expected, :Operator].include? c
|
||||
|
|
|
@ -26,6 +26,42 @@ class SmqlToAR
|
|||
def to_sym() "smql_c#{@vid}".to_sym end
|
||||
alias sym to_sym
|
||||
def to_i() @vid end
|
||||
def === other
|
||||
to_s === other || to_sym === other || to_i === other || self == other || self === other
|
||||
end
|
||||
end
|
||||
|
||||
class Aliases < Hash
|
||||
attr_accessor :counter, :prefix
|
||||
|
||||
def initialize prefix, *a, &e
|
||||
@counter, @prefix = 0, prefix || 'smql'
|
||||
super *a, &e
|
||||
end
|
||||
|
||||
def format name
|
||||
pre, suf = name.split( ',', 2)
|
||||
return name unless suf
|
||||
pre += ",#{@counter += 1},"
|
||||
l = 60-pre.length
|
||||
n = suf[(suf.length<=l ? 0 : -l)..-1]
|
||||
n == suf ? pre+n : "#{pre},,,#{n}"
|
||||
end
|
||||
|
||||
def name n
|
||||
n.collect( &:to_alias).join ','
|
||||
end
|
||||
|
||||
def [] k
|
||||
n = name k
|
||||
v = super n
|
||||
v = self[k] = format( "#{prefix},#{n}") unless v
|
||||
v
|
||||
end
|
||||
|
||||
def []= k, v
|
||||
super name( k), v
|
||||
end
|
||||
end
|
||||
|
||||
attr_reader :table_alias, :model, :table_model, :base_table, :_where, :_select, :_wobs, :_joins, :prefix, :_vid
|
||||
|
@ -34,14 +70,11 @@ class SmqlToAR
|
|||
def initialize model, prefix = nil
|
||||
@prefix = "smql"
|
||||
@logger = SmqlToAR.logger
|
||||
@table_alias = Hash.new do |h, k|
|
||||
j = Array.wrap( k).compact
|
||||
h[k] = h.key?(j) ? h[j] : "#{@prefix},#{j.join(',')}"
|
||||
end
|
||||
@_vid, @_where, @_wobs, @model, @quoter = 0, SmqlToAR::And[], {}, model, model.connection
|
||||
@base_table = [model.table_name.to_sym]
|
||||
@table_alias = Aliases.new @prefix
|
||||
@_vid, @_where, @_wobs, @model, @quote = 0, SmqlToAR::And[], {}, model, model.connection
|
||||
@base_table = [Column::Col.new( model.table_name)]
|
||||
@table_alias[ @base_table] = @base_table.first
|
||||
t = quote_table_name @table_alias[ @base_table]
|
||||
t = quote_table_name @base_table.first.col
|
||||
@_select, @_joins, @_joined, @_includes, @_order = ["DISTINCT #{t}.*"], "", [@base_table], [], []
|
||||
@table_model = {@base_table => @model}
|
||||
end
|
||||
|
@ -49,7 +82,7 @@ class SmqlToAR
|
|||
def vid() Vid.new( @_vid+=1) end
|
||||
|
||||
def inspect
|
||||
"#<#{self.class.name}:#{"0x%x"% (self.object_id<<1)}|#{@prefix}:#{@base_table}:#{@model} vid=#{@_vid} where=#{@_where} wobs=#{@_wobs} select=#{@_select} aliases=#{@_table_alias}>"
|
||||
"#<#{self.class.name}:#{"0x%x"% (self.object_id<<1)}|#{@prefix}:#{@base_table}:#{@model} vid=#{@_vid} where=#{@_where} wobs=#{@_wobs} select=#{@_select} aliases=#{@table_alias}>"
|
||||
end
|
||||
|
||||
# Jede via where uebergebene Condition wird geodert und alle zusammen werden geundet.
|
||||
|
@ -67,19 +100,23 @@ class SmqlToAR
|
|||
end
|
||||
|
||||
def quote_column_name name
|
||||
@quoter.quote_column_name( name).gsub /"\."/, ','
|
||||
@quote.quote_column_name( name).gsub /"\."/, ','
|
||||
end
|
||||
|
||||
def quote_table_name name
|
||||
@quoter.quote_table_name( name).gsub /"\."/, ','
|
||||
name = case name
|
||||
when Array, Column::Col then @table_alias[Array.wrap name]
|
||||
else name.to_s
|
||||
end
|
||||
@quote.quote_table_name name
|
||||
end
|
||||
|
||||
def column table, name
|
||||
"#{quote_table_name table.kind_of?(String) ? table : @table_alias[table]}.#{quote_column_name name}"
|
||||
"#{quote_table_name table}.#{quote_column_name name}"
|
||||
end
|
||||
|
||||
def build_join orig, pretable, table, prekey, key
|
||||
" LEFT OUTER JOIN #{orig} AS #{quote_table_name table} ON #{column pretable, prekey} = #{column table, key} "
|
||||
"\tLEFT JOIN #{orig} AS #{quote_table_name table}\n\tON #{column pretable, prekey} = #{column table, key}\n"
|
||||
end
|
||||
|
||||
def sub_joins table, col, model, query
|
||||
|
@ -90,32 +127,33 @@ class SmqlToAR
|
|||
def join_ table, model, query, pretable = nil
|
||||
pretable ||= table[0...-1]
|
||||
@table_model[ table] = model
|
||||
premodel = @table_model[ pretable]
|
||||
@table_model.rehash
|
||||
premodel = @table_model.find {|k,v| pretable == k }[1]
|
||||
t = @table_alias[ table]
|
||||
pt = quote_table_name @table_alias[ table[ 0...-1]]
|
||||
refl = premodel.reflections[table.last]
|
||||
pt = quote_table_name table[ 0...-1]
|
||||
refl = premodel.reflections[table.last.to_sym]
|
||||
case refl
|
||||
when ActiveRecord::Reflection::ThroughReflection
|
||||
through = refl.through_reflection
|
||||
throughtable = table[0...-1]+[through.name.to_sym]
|
||||
srctable = throughtable+[refl.source_reflection.name]
|
||||
through_table = table[0...-1]+[Column::Col.new( through.name, table.last.as)]
|
||||
srctable = through_table+[Column::Col.new( refl.source_reflection.name, table.last.as)]
|
||||
@table_model[ srctable] = model
|
||||
@table_alias[ table] = @table_alias[ srctable]
|
||||
join_ throughtable, through.klass, quote_table_name( through.table_name)
|
||||
join_ srctable, refl.klass, query, throughtable
|
||||
join_ through_table, through.klass, quote_table_name( through.table_name)
|
||||
join_ srctable, refl.klass, query, through_table
|
||||
when ActiveRecord::Reflection::AssociationReflection
|
||||
case refl.macro
|
||||
when :has_many
|
||||
@_joins += build_join query, pretable, t, premodel.primary_key, refl.primary_key_name
|
||||
when :has_many, :has_one
|
||||
@_joins += build_join query, pretable, t, premodel.primary_key, refl.foreign_key
|
||||
when :belongs_to
|
||||
@_joins += build_join query, pretable, t, refl.primary_key_name, premodel.primary_key
|
||||
@_joins += build_join query, pretable, t, refl.foreign_key, premodel.primary_key
|
||||
when :has_and_belongs_to_many
|
||||
jointable = [','] + table
|
||||
@_joins += build_join refl.options[:join_table], pretable, @table_alias[jointable], premodel.primary_key, refl.primary_key_name
|
||||
jointable = [Column::Col.new(',')] + table
|
||||
@_joins += build_join refl.options[:join_table], pretable, @table_alias[ jointable], premodel.primary_key, refl.foreign_key
|
||||
@_joins += build_join query, jointable, t, refl.association_foreign_key, refl.association_primary_key
|
||||
else raise BuilderError, "Unkown reflection macro: #{refl.macro.inspect}"
|
||||
end
|
||||
else raise BuilderError, "Unkown reflection type: #{refl.class.name}"
|
||||
else raise BuilderError, "Unkown reflection type: #{refl.class.name} #{refl.macro.inspect}"
|
||||
end
|
||||
self
|
||||
end
|
||||
|
@ -138,17 +176,19 @@ class SmqlToAR
|
|||
end
|
||||
|
||||
def order table, col, o
|
||||
@_order.push "#{column table, col} #{:DESC == o ? :DESC : :ASC}"
|
||||
ct = column table, col
|
||||
@_select.push ct
|
||||
@_order.push "#{ct} #{:DESC == o ? :DESC : :ASC}"
|
||||
self
|
||||
end
|
||||
|
||||
def build_ar
|
||||
where_str = @_where.type_correction!.optimize!.tap {|x| p x }.build_where
|
||||
where_str = @_where.type_correction!.optimize!.build_where
|
||||
incls = {}
|
||||
@_includes.each do |inc|
|
||||
b = incls
|
||||
inc[1..-1].collect {|rel| b = b[rel] ||= {} }
|
||||
end
|
||||
@logger.info where: where_str, wobs: @_wobs
|
||||
@model = @model.
|
||||
select( @_select.join( ', ')).
|
||||
joins( @_joins).
|
||||
|
@ -179,10 +219,9 @@ class SmqlToAR
|
|||
|
||||
class SubBuilder < Array
|
||||
attr_reader :parent, :_where
|
||||
delegate :wobs, :joins, :includes, :sub_joins, :vid, :quote_column_name, :quoter, :quote_table_name, :column, :to => :parent
|
||||
delegate :wobs, :joins, :includes, :sub_joins, :vid, :quote_column_name, :quote, :quote_table_name, :column, :to => :parent
|
||||
|
||||
def initialize parent, tmp = false
|
||||
p init: self, parent: parent
|
||||
@parent = parent
|
||||
@parent.where self unless @parend.nil? && tmp
|
||||
end
|
||||
|
@ -207,21 +246,20 @@ class SmqlToAR
|
|||
end
|
||||
|
||||
def optimize!
|
||||
p optimize: self
|
||||
ext = []
|
||||
collect! do |sub|
|
||||
sub = sub.optimize! if sub.kind_of? Array
|
||||
sub = sub.optimize! if sub.kind_of? SubBuilder
|
||||
if self.class == sub.class
|
||||
ext.push *sub
|
||||
nil
|
||||
elsif sub.blank?
|
||||
nil
|
||||
elsif 1 == sub.size
|
||||
sub.first
|
||||
else
|
||||
sub
|
||||
end
|
||||
end.compact!
|
||||
p optimized: self
|
||||
p ext: ext
|
||||
push *ext
|
||||
self
|
||||
end
|
||||
|
@ -231,18 +269,22 @@ class SmqlToAR
|
|||
end
|
||||
def default() SmqlToAR::And end
|
||||
def default_new( parent) default.new self, parent, false end
|
||||
def collect_build_where indent = nil
|
||||
indent = (indent||0) + 1
|
||||
collect {|x| "(#{x.respond_to?( :build_where) ? x.build_where( indent) : x.to_s})" }
|
||||
end
|
||||
end
|
||||
|
||||
class And < SubBuilder
|
||||
def default; SmqlToAR::Or; end
|
||||
def build_where
|
||||
join ' AND '
|
||||
def build_where indent = nil
|
||||
collect_build_where( indent).join " AND\n"+"\t"*(indent||0)
|
||||
end
|
||||
end
|
||||
|
||||
class Or < SubBuilder
|
||||
def build_where
|
||||
join ' OR '
|
||||
def build_where indent = nil
|
||||
collect_build_where( indent).join " OR\n"+"\t"*(indent||0)
|
||||
end
|
||||
end
|
||||
end
|
||||
|
|
Loading…
Reference in a new issue