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|
require_relative "spec_helper"
describe "tactical_eager_loading plugin" do
def sql_match(*args)
sqls = DB.sqls
sqls.length.must_equal args.length
sqls.zip(args).each do |is, should|
if should.is_a?(Regexp)
is.must_match should
else
is.must_equal should
end
end
end
attr_reader :ts
before do
class ::TacticalEagerLoadingModel < Sequel::Model(:t)
plugin :tactical_eager_loading
columns :id, :parent_id
many_to_one :parent, :class=>self
one_to_many :children, :class=>self, :key=>:parent_id
set_dataset dataset.with_fetch(proc do |sql|
if sql !~ /WHERE/
[{:id=>1, :parent_id=>101}, {:id=>2, :parent_id=>102}, {:id=>101, :parent_id=>nil}, {:id=>102, :parent_id=>nil}]
elsif sql =~ /WHERE.*\bid = (\d+)/
[{:id=>$1.to_i, :parent_id=>nil}]
elsif sql =~ /WHERE.*\bid IN \(([\d, ]*)\)/
$1.split(', ').map{|x| {:id=>x.to_i, :parent_id=>nil}}
elsif sql =~ /WHERE.*\bparent_id = (\d+)/
{:id=>$1.to_i - 100, :parent_id=>$1.to_i} if $1.to_i > 100
elsif sql =~ /WHERE.*\bparent_id IN \(([\d, ]*)\)/
$1.split(', ').map{|x| {:id=>x.to_i - 100, :parent_id=>x.to_i} if x.to_i > 100}.compact
end
end)
end
@c = ::TacticalEagerLoadingModel
@ds = TacticalEagerLoadingModel.dataset
DB.reset
@ts = @c.all
sql_match('SELECT * FROM t')
end
after do
Object.send(:remove_const, :TacticalEagerLoadingModel)
sql_match
end
it "Dataset#all should set the retrieved_by and retrieved_with attributes" do
ts.map{|x| [x.retrieved_by, x.retrieved_with]}.must_equal [[@ds,ts], [@ds,ts], [@ds,ts], [@ds,ts]]
end
it "Dataset#all shouldn't raise an error if a Sequel::Model instance is not returned" do
@c.naked.all
sql_match('SELECT * FROM t')
end
it "association getter methods should eagerly load the association if the association isn't cached" do
ts.map{|x| x.parent}.must_equal [ts[2], ts[3], nil, nil]
sql_match(/\ASELECT \* FROM t WHERE \(t\.id IN \(10[12], 10[12]\)\)\z/)
ts.map{|x| x.children}.must_equal [[], [], [ts[0]], [ts[1]]]
sql_match(/\ASELECT \* FROM t WHERE \(t\.parent_id IN/)
end
it "association getter methods should not eagerly load the association if the association is cached" do
ts.map{|x| x.parent}.must_equal [ts[2], ts[3], nil, nil]
sql_match(/\ASELECT \* FROM t WHERE \(t\.id IN \(10[12], 10[12]\)\)\z/)
@c.dataset = @c.dataset.with_extend{private; def eager_load(*) raise end}
ts.map{|x| x.parent}.must_equal [ts[2], ts[3], nil, nil]
end
it "association getter methods should not eagerly load the association if a block is given" do
ts.map{|x| x.parent{|ds| ds}}.must_equal [ts[2], ts[3], nil, nil]
sql_match('SELECT * FROM t WHERE (t.id = 101) LIMIT 1', 'SELECT * FROM t WHERE (t.id = 102) LIMIT 1')
end
it "association getter methods should not eagerly load the association if a callback proc is given" do
ts.map{|x| x.parent(:callback=>proc{|ds| ds})}.must_equal [ts[2], ts[3], nil, nil]
sql_match('SELECT * FROM t WHERE (t.id = 101) LIMIT 1', 'SELECT * FROM t WHERE (t.id = 102) LIMIT 1')
end
it "association getter methods should not eagerly load the association if :reload=>true is passed" do
ts.map{|x| x.parent(:reload=>true)}.must_equal [ts[2], ts[3], nil, nil]
sql_match('SELECT * FROM t WHERE id = 101', 'SELECT * FROM t WHERE id = 102')
end
it "association getter methods should eagerly reload the association if :eager_reload=>true is passed" do
ts.first.parent(:reload=>true)
sql_match('SELECT * FROM t WHERE id = 101')
ts.map{|x| x.associations.fetch(:parent, 1)}.must_equal [ts[2], 1, 1, 1]
ts.first.parent(:eager_reload=>true)
sql_match(/\ASELECT \* FROM t WHERE \(t\.id IN \(10[12], 10[12]\)\)\z/)
ts.map{|x| x.associations.fetch(:parent, 1)}.must_equal [ts[2], ts[3], nil, nil]
end
it "association getter methods should not clear associations for objects that already have a cached association" do
ts.first.parent(:reload=>true)
sql_match('SELECT * FROM t WHERE id = 101')
ts.map{|x| x.associations.fetch(:parent, 1)}.must_equal [ts[2], 1, 1, 1]
ts[1].associations.delete(:parent)
ts[1].parent
sql_match(/\ASELECT \* FROM t WHERE \(t\.id IN \(102\)\)\z/)
ts.map{|x| x.associations.fetch(:parent, 1)}.must_equal [ts[2], ts[3], nil, nil]
end
it "association getter methods should support eagerly loading dependent associations via :eager" do
parents = ts.map{|x| x.parent(:eager=>:children)}
sql_match(/\ASELECT \* FROM t WHERE \(t\.id IN \(10[12], 10[12]\)\)\z/, /\ASELECT \* FROM t WHERE \(t\.parent_id IN/)
parents.must_equal [ts[2], ts[3], nil, nil]
parents[0..1].map{|x| x.children}.must_equal [[ts[0]], [ts[1]]]
end
it "association getter methods should support eager callbacks via :eager" do
parents = ts.map{|x| x.parent(:eager=>proc{|ds| ds.where{name > 'M'}.eager(:children)})}
sql_match(/\ASELECT \* FROM t WHERE \(\(t\.id IN \(10[12], 10[12]\)\) AND \(name > 'M'\)\)\z/, /\ASELECT \* FROM t WHERE \(t\.parent_id IN/)
parents.must_equal [ts[2], ts[3], nil, nil]
parents[0..1].map{|x| x.children}.must_equal [[ts[0]], [ts[1]]]
end
it "should not eager load when association uses :allow_eager=>false option" do
@c.many_to_one :parent, :clone=>:parent, :allow_eager=>false
@c.one_to_many :children, :clone=>:children, :allow_eager=>false
ts.map{|x| x.parent}.must_equal [ts[2], ts[3], nil, nil]
sql_match('SELECT * FROM t WHERE id = 101', 'SELECT * FROM t WHERE id = 102')
ts.map{|x| x.children}.must_equal [[], [], [ts[0]], [ts[1]]]
sql_match('SELECT * FROM t WHERE (t.parent_id = 1)', 'SELECT * FROM t WHERE (t.parent_id = 2)', 'SELECT * FROM t WHERE (t.parent_id = 101)', 'SELECT * FROM t WHERE (t.parent_id = 102)')
end
it "should handle loading single_table_inheritance after tactical_eager_loading and loading associations defined in parent and subclasses" do
c = Class.new(@c)
c.many_to_one :parent2, :class=>@c, :key=>:parent_id
c.plugin :single_table_inheritance, nil
objs = @c.dataset.with_row_proc(proc{|r| (r[:parent_id] == 101 ? c : @c).call(r)}).all{|x| x.parent2 if x.is_a?(c)}
sql_match('SELECT * FROM t', 'SELECT * FROM t WHERE (t.id IN (101))')
objs[0].associations.keys.must_equal [:parent2]
objs[1].associations.keys.must_equal []
objs = @c.dataset.with_row_proc(proc{|r| (r[:parent_id] == 101 ? c : @c).call(r)}).all{|x| x.parent}
sql_match('SELECT * FROM t', 'SELECT * FROM t WHERE (t.id IN (101, 102))')
objs[0].associations.keys.must_equal [:parent]
objs[1].associations.keys.must_equal [:parent]
end
it "should handle case where an association is defined in a subclass when loading single_table_inheritance before tactical_eager_loading" do
Object.send(:remove_const, :TacticalEagerLoadingModel)
class ::TacticalEagerLoadingModel < Sequel::Model(:t)
plugin :single_table_inheritance, nil
plugin :tactical_eager_loading
columns :id, :parent_id
many_to_one :parent, :class=>self
one_to_many :children, :class=>self, :key=>:parent_id
set_dataset dataset.with_fetch(proc do |sql|
if sql !~ /WHERE/
[{:id=>1, :parent_id=>101}, {:id=>2, :parent_id=>102}, {:id=>101, :parent_id=>nil}, {:id=>102, :parent_id=>nil}]
elsif sql =~ /WHERE.*\bid = (\d+)/
[{:id=>$1.to_i, :parent_id=>nil}]
elsif sql =~ /WHERE.*\bid IN \(([\d, ]*)\)/
$1.split(', ').map{|x| {:id=>x.to_i, :parent_id=>nil}}
elsif sql =~ /WHERE.*\bparent_id = (\d+)/
{:id=>$1.to_i - 100, :parent_id=>$1.to_i} if $1.to_i > 100
elsif sql =~ /WHERE.*\bparent_id IN \(([\d, ]*)\)/
$1.split(', ').map{|x| {:id=>x.to_i - 100, :parent_id=>x.to_i} if x.to_i > 100}.compact
end
end)
end
@c = ::TacticalEagerLoadingModel
@ds = TacticalEagerLoadingModel.dataset
DB.reset
c = Class.new(@c)
c.many_to_one :parent2, :class=>@c, :key=>:parent_id
objs = @c.dataset.with_row_proc(proc{|r| (r[:parent_id] == 101 ? c : @c).call(r)}).all{|x| x.parent2 if x.is_a?(c)}
sql_match('SELECT * FROM t', 'SELECT * FROM t WHERE (t.id IN (101))')
objs[0].associations.keys.must_equal [:parent2]
objs[1].associations.keys.must_equal []
objs = @c.dataset.with_row_proc(proc{|r| (r[:parent_id] == 101 ? c : @c).call(r)}).all{|x| x.parent}
sql_match('SELECT * FROM t', 'SELECT * FROM t WHERE (t.id IN (101, 102))')
objs[0].associations.keys.must_equal [:parent]
objs[1].associations.keys.must_equal [:parent]
end
it "association getter methods should not eagerly load the association if an instance is frozen" do
ts.first.freeze
ts.map{|x| x.parent}.must_equal [ts[2], ts[3], nil, nil]
sql_match('SELECT * FROM t WHERE id = 101', 'SELECT * FROM t WHERE (t.id IN (102))')
ts.map{|x| x.children}.must_equal [[], [], [ts[0]], [ts[1]]]
sql_match('SELECT * FROM t WHERE (t.parent_id = 1)', /\ASELECT \* FROM t WHERE \(t\.parent_id IN/)
ts.map{|x| x.parent}.must_equal [ts[2], ts[3], nil, nil]
sql_match('SELECT * FROM t WHERE id = 101')
ts.map{|x| x.children}.must_equal [[], [], [ts[0]], [ts[1]]]
sql_match('SELECT * FROM t WHERE (t.parent_id = 1)')
end
it "#marshallable should make marshalling not fail" do
Marshal.dump(ts.map{|x| x.marshallable!})
end
end
describe "tactical_eager_loading plugin eager_graph_support" do
before do
@c = Class.new(Sequel::Model)
@c.class_eval do
set_dataset DB[:t]
columns :id, :parent_id
plugin :tactical_eager_loading
many_to_one :parent, :class=>self
one_to_many :children, :class=>self, :key=>:parent_id
end
DB.reset
end
it "should allow eager loading of associated objects from one_to_many associated objects retrieved via eager_graph" do
a = @c.eager_graph(:children).
with_fetch([
{:id=>1, :parent_id=>nil, :children_id=>3, :children_parent_id=>1},
{:id=>1, :parent_id=>nil, :children_id=>4, :children_parent_id=>1},
{:id=>2, :parent_id=>nil, :children_id=>5, :children_parent_id=>2}
]).all
@c.db.sqls.must_equal ["SELECT t.id, t.parent_id, children.id AS children_id, children.parent_id AS children_parent_id FROM t LEFT OUTER JOIN t AS children ON (children.parent_id = t.id)"]
a.must_equal [@c.load(:id=>1, :parent_id=>nil), @c.load(:id=>2, :parent_id=>nil)]
a.map(&:children).must_equal [
[@c.load(:id=>3, :parent_id=>1),
@c.load(:id=>4, :parent_id=>1)],
[@c.load(:id=>5, :parent_id=>2)]]
@c.db.sqls.must_equal []
@c.dataset = @c.dataset.with_fetch([[{:id=>6, :parent_id=>3}, {:id=>7, :parent_id=>4}, {:id=>8, :parent_id=>5}],
[{:id=>9, :parent_id=>6}, {:id=>10, :parent_id=>7}, {:id=>11, :parent_id=>8}]])
a.map(&:children).map{|v| v.map(&:children)}.must_equal [
[[@c.load(:id=>6, :parent_id=>3)],
[@c.load(:id=>7, :parent_id=>4)]],
[[@c.load(:id=>8, :parent_id=>5)]]]
@c.db.sqls.must_equal ["SELECT * FROM t WHERE (t.parent_id IN (3, 4, 5))"]
a.map(&:children).map{|v| v.map(&:children).map{|v1| v1.map(&:children)}}.must_equal [
[[[@c.load(:id=>9, :parent_id=>6)]],
[[@c.load(:id=>10, :parent_id=>7)]]],
[[[@c.load(:id=>11, :parent_id=>8)]]]]
@c.db.sqls.must_equal ["SELECT * FROM t WHERE (t.parent_id IN (6, 7, 8))"]
end
it "should allow eager loading of associated objects from many_to_one associated objects retrieved via eager_graph" do
a = @c.eager_graph(:parent).
with_fetch([
{:id=>9, :parent_id=>6, :parent_id_0=>6, :parent_parent_id=>3},
{:id=>10, :parent_id=>7, :parent_id_0=>7, :parent_parent_id=>4},
{:id=>11, :parent_id=>8, :parent_id_0=>8, :parent_parent_id=>5}
]).all
@c.db.sqls.must_equal ["SELECT t.id, t.parent_id, parent.id AS parent_id_0, parent.parent_id AS parent_parent_id FROM t LEFT OUTER JOIN t AS parent ON (parent.id = t.parent_id)"]
a.must_equal [@c.load(:id=>9, :parent_id=>6), @c.load(:id=>10, :parent_id=>7), @c.load(:id=>11, :parent_id=>8)]
a.map(&:parent).must_equal [@c.load(:id=>6, :parent_id=>3), @c.load(:id=>7, :parent_id=>4), @c.load(:id=>8, :parent_id=>5)]
@c.db.sqls.must_equal []
@c.dataset = @c.dataset.with_fetch([[{:id=>5, :parent_id=>2}, {:id=>4, :parent_id=>nil}, {:id=>3, :parent_id=>1}],
[{:id=>2, :parent_id=>nil}, {:id=>1, :parent_id=>nil}]])
a.map(&:parent).map(&:parent).must_equal [@c.load(:id=>3, :parent_id=>1), @c.load(:id=>4, :parent_id=>nil), @c.load(:id=>5, :parent_id=>2)]
@c.db.sqls.must_equal ["SELECT * FROM t WHERE (t.id IN (3, 4, 5))"]
a.map(&:parent).map(&:parent).map(&:parent).must_equal [@c.load(:id=>1, :parent_id=>nil), nil, @c.load(:id=>2, :parent_id=>nil)]
@c.db.sqls.must_equal ["SELECT * FROM t WHERE (t.id IN (2, 1))"]
end
it "should allow eager loading of associated objects when using chained one_to_many associations" do
a = @c.eager_graph(:children=>:children).
with_fetch([
{:id=>1, :parent_id=>nil, :children_id=>3, :children_parent_id=>1, :children_0_id=>6, :children_0_parent_id=>3},
{:id=>1, :parent_id=>nil, :children_id=>4, :children_parent_id=>1, :children_0_id=>7, :children_0_parent_id=>4},
{:id=>2, :parent_id=>nil, :children_id=>5, :children_parent_id=>2, :children_0_id=>8, :children_0_parent_id=>5}
]).all
@c.db.sqls.must_equal ["SELECT t.id, t.parent_id, children.id AS children_id, children.parent_id AS children_parent_id, children_0.id AS children_0_id, children_0.parent_id AS children_0_parent_id FROM t LEFT OUTER JOIN t AS children ON (children.parent_id = t.id) LEFT OUTER JOIN t AS children_0 ON (children_0.parent_id = children.id)"]
a.must_equal [@c.load(:id=>1, :parent_id=>nil), @c.load(:id=>2, :parent_id=>nil)]
a.map(&:children).must_equal [
[@c.load(:id=>3, :parent_id=>1),
@c.load(:id=>4, :parent_id=>1)],
[@c.load(:id=>5, :parent_id=>2)]]
a.map(&:children).map{|v| v.map(&:children)}.must_equal [
[[@c.load(:id=>6, :parent_id=>3)],
[@c.load(:id=>7, :parent_id=>4)]],
[[@c.load(:id=>8, :parent_id=>5)]]]
@c.db.sqls.must_equal []
@c.dataset = @c.dataset.with_fetch([{:id=>9, :parent_id=>6}, {:id=>10, :parent_id=>7}, {:id=>11, :parent_id=>8}])
a.map(&:children).map{|v| v.map(&:children).map{|v1| v1.map(&:children)}}.must_equal [
[[[@c.load(:id=>9, :parent_id=>6)]],
[[@c.load(:id=>10, :parent_id=>7)]]],
[[[@c.load(:id=>11, :parent_id=>8)]]]]
@c.db.sqls.must_equal ["SELECT * FROM t WHERE (t.parent_id IN (6, 7, 8))"]
end
it "should allow eager loading of associated objects when using chained many_to_one associations" do
a = @c.eager_graph(:parent=>:parent).
with_fetch([
{:id=>9, :parent_id=>6, :parent_id_0=>6, :parent_parent_id=>3, :parent_0_id=>3, :parent_0_parent_id=>1},
{:id=>10, :parent_id=>7, :parent_id_0=>7, :parent_parent_id=>4, :parent_0_id=>4, :parent_0_parent_id=>1},
{:id=>11, :parent_id=>8, :parent_id_0=>8, :parent_parent_id=>5, :parent_0_id=>5, :parent_0_parent_id=>2}
]).all
@c.db.sqls.must_equal ["SELECT t.id, t.parent_id, parent.id AS parent_id_0, parent.parent_id AS parent_parent_id, parent_0.id AS parent_0_id, parent_0.parent_id AS parent_0_parent_id FROM t LEFT OUTER JOIN t AS parent ON (parent.id = t.parent_id) LEFT OUTER JOIN t AS parent_0 ON (parent_0.id = parent.parent_id)"]
a.must_equal [@c.load(:id=>9, :parent_id=>6), @c.load(:id=>10, :parent_id=>7), @c.load(:id=>11, :parent_id=>8)]
a.map(&:parent).must_equal [@c.load(:id=>6, :parent_id=>3), @c.load(:id=>7, :parent_id=>4), @c.load(:id=>8, :parent_id=>5)]
a.map(&:parent).map(&:parent).must_equal [@c.load(:id=>3, :parent_id=>1), @c.load(:id=>4, :parent_id=>1), @c.load(:id=>5, :parent_id=>2)]
@c.db.sqls.must_equal []
@c.dataset = @c.dataset.with_fetch([{:id=>2, :parent_id=>nil}, {:id=>1, :parent_id=>nil}])
a.map(&:parent).map(&:parent).map(&:parent).must_equal [@c.load(:id=>1, :parent_id=>nil), @c.load(:id=>1, :parent_id=>nil), @c.load(:id=>2, :parent_id=>nil)]
@c.db.sqls.must_equal ["SELECT * FROM t WHERE (t.id IN (1, 2))"]
end
it "should allow eager loading of associated objects when using chained many_to_one=>one_to_many associations" do
a = @c.eager_graph(:parent=>:children).
with_fetch([
{:id=>9, :parent_id=>6, :parent_id_0=>6, :parent_parent_id=>3, :children_id=>9, :children_parent_id=>6},
{:id=>10, :parent_id=>7, :parent_id_0=>7, :parent_parent_id=>4, :children_id=>10, :children_parent_id=>7},
{:id=>11, :parent_id=>8, :parent_id_0=>8, :parent_parent_id=>5, :children_id=>11, :children_parent_id=>8},
{:id=>9, :parent_id=>6, :parent_id_0=>6, :parent_parent_id=>3, :children_id=>12, :children_parent_id=>6},
{:id=>10, :parent_id=>7, :parent_id_0=>7, :parent_parent_id=>4, :children_id=>13, :children_parent_id=>7},
{:id=>11, :parent_id=>8, :parent_id_0=>8, :parent_parent_id=>5, :children_id=>14, :children_parent_id=>8}
]).all
@c.db.sqls.must_equal ["SELECT t.id, t.parent_id, parent.id AS parent_id_0, parent.parent_id AS parent_parent_id, children.id AS children_id, children.parent_id AS children_parent_id FROM t LEFT OUTER JOIN t AS parent ON (parent.id = t.parent_id) LEFT OUTER JOIN t AS children ON (children.parent_id = parent.id)"]
a.must_equal [@c.load(:id=>9, :parent_id=>6), @c.load(:id=>10, :parent_id=>7), @c.load(:id=>11, :parent_id=>8)]
a.map(&:parent).must_equal [@c.load(:id=>6, :parent_id=>3), @c.load(:id=>7, :parent_id=>4), @c.load(:id=>8, :parent_id=>5)]
a.map(&:parent).map(&:children).must_equal [
[@c.load(:id=>9, :parent_id=>6), @c.load(:id=>12, :parent_id=>6)],
[@c.load(:id=>10, :parent_id=>7), @c.load(:id=>13, :parent_id=>7)],
[@c.load(:id=>11, :parent_id=>8), @c.load(:id=>14, :parent_id=>8)]]
@c.db.sqls.must_equal []
@c.dataset = @c.dataset.with_fetch([{:id=>19, :parent_id=>9}, {:id=>24, :parent_id=>14}])
a.map(&:parent).map(&:children).map{|v| v.map(&:children)}
#.must_equal [
# [[@c.load(:id=>19, :parent_id=>9)], []],
# [[], []],
# [[], @c.load(:id=>24, :parent_id=>14)]]
@c.db.sqls.must_equal ["SELECT * FROM t WHERE (t.parent_id IN (9, 10, 11, 12, 13, 14))"]
end
it "should allow eager loading of associated objects when using chained one_to_many associations with partial data" do
a = @c.eager_graph(:children=>:children).
with_fetch([
{:id=>1, :parent_id=>nil, :children_id=>3, :children_parent_id=>1, :children_0_id=>6, :children_0_parent_id=>3},
{:id=>1, :parent_id=>nil, :children_id=>4, :children_parent_id=>1, :children_0_id=>nil, :children_0_parent_id=>nil},
{:id=>2, :parent_id=>nil, :children_id=>nil, :children_parent_id=>nil, :children_0_id=>nil, :children_0_parent_id=>nil}
]).all
@c.db.sqls.must_equal ["SELECT t.id, t.parent_id, children.id AS children_id, children.parent_id AS children_parent_id, children_0.id AS children_0_id, children_0.parent_id AS children_0_parent_id FROM t LEFT OUTER JOIN t AS children ON (children.parent_id = t.id) LEFT OUTER JOIN t AS children_0 ON (children_0.parent_id = children.id)"]
a.must_equal [@c.load(:id=>1, :parent_id=>nil), @c.load(:id=>2, :parent_id=>nil)]
a.map(&:children).must_equal [
[@c.load(:id=>3, :parent_id=>1),
@c.load(:id=>4, :parent_id=>1)],
[]]
a.map(&:children).map{|v| v.map(&:children)}.must_equal [
[[@c.load(:id=>6, :parent_id=>3)],
[]],
[]]
@c.db.sqls.must_equal []
@c.dataset = @c.dataset.with_fetch([{:id=>9, :parent_id=>6}])
a.map(&:children).map{|v| v.map(&:children).map{|v1| v1.map(&:children)}}.must_equal [
[[[@c.load(:id=>9, :parent_id=>6)]],
[]],
[]]
@c.db.sqls.must_equal ["SELECT * FROM t WHERE (t.parent_id IN (6))"]
end
it "should allow eager loading of associated objects when using chained many_to_one associations with partial data" do
a = @c.eager_graph(:parent=>:parent).
with_fetch([
{:id=>9, :parent_id=>6, :parent_id_0=>6, :parent_parent_id=>3, :parent_0_id=>3, :parent_0_parent_id=>1},
{:id=>10, :parent_id=>7, :parent_id_0=>7, :parent_parent_id=>nil, :parent_0_id=>nil, :parent_0_parent_id=>nil},
{:id=>11, :parent_id=>nil, :parent_id_0=>nil, :parent_parent_id=>nil, :parent_0_id=>nil, :parent_0_parent_id=>nil}
]).all
@c.db.sqls.must_equal ["SELECT t.id, t.parent_id, parent.id AS parent_id_0, parent.parent_id AS parent_parent_id, parent_0.id AS parent_0_id, parent_0.parent_id AS parent_0_parent_id FROM t LEFT OUTER JOIN t AS parent ON (parent.id = t.parent_id) LEFT OUTER JOIN t AS parent_0 ON (parent_0.id = parent.parent_id)"]
a.must_equal [@c.load(:id=>9, :parent_id=>6), @c.load(:id=>10, :parent_id=>7), @c.load(:id=>11, :parent_id=>nil)]
a.map(&:parent).must_equal [@c.load(:id=>6, :parent_id=>3), @c.load(:id=>7, :parent_id=>nil), nil]
a.map(&:parent).map{|v| v.parent if v}.must_equal [@c.load(:id=>3, :parent_id=>1), nil, nil]
@c.db.sqls.must_equal []
@c.dataset = @c.dataset.with_fetch([{:id=>1, :parent_id=>nil}])
a.map(&:parent).map{|v| v.parent.parent if v && v.parent}.must_equal [@c.load(:id=>1, :parent_id=>nil), nil, nil]
@c.db.sqls.must_equal ["SELECT * FROM t WHERE (t.id IN (1))"]
end
it "should skip setup of eager loading when using eager_graph for association not using plugin" do
c = Class.new(Sequel::Model)
c.class_eval do
set_dataset DB[:t]
columns :id, :t_id
end
@c.many_to_one :f, :class=>c, :key=>:parent_id
@c.one_to_many :fs, :class=>c
c.many_to_one :t, :class=>@c
c.one_to_many :ts, :class=>@c, :key=>:parent_id
a = @c.eager_graph(:f, :parent, :fs=>:t).
with_fetch([
{:id=>5, :parent_id=>4, :f_id=>4, :t_id=>20, :parent_id_0=>4, :parent_parent_id=>3, :fs_id=>5, :fs_t_id=>30, :t_0_id=>30, :t_0_parent_id=>40},
{:id=>15, :parent_id=>14, :f_id=>14, :t_id=>30, :parent_id_0=>14, :parent_parent_id=>13, :fs_id=>15, :fs_t_id=>40, :t_0_id=>40, :t_0_parent_id=>50},
]).
all
@c.db.sqls.must_equal ["SELECT t.id, t.parent_id, f.id AS f_id, f.t_id, parent.id AS parent_id_0, parent.parent_id AS parent_parent_id, fs.id AS fs_id, fs.t_id AS fs_t_id, t_0.id AS t_0_id, t_0.parent_id AS t_0_parent_id FROM t LEFT OUTER JOIN t AS f ON (f.id = t.parent_id) LEFT OUTER JOIN t AS parent ON (parent.id = t.parent_id) LEFT OUTER JOIN t AS fs ON (fs._id = t.id) LEFT OUTER JOIN t AS t_0 ON (t_0.id = fs.t_id)"]
a.must_equal [@c.load(:id=>5, :parent_id=>4), @c.load(:id=>15, :parent_id=>14)]
a.map(&:f).must_equal [c.load(:id=>4, :t_id=>20), c.load(:id=>14, :t_id=>30)]
a.map(&:parent).must_equal [@c.load(:id=>4, :parent_id=>3), @c.load(:id=>14, :parent_id=>13)]
a.map(&:fs).must_equal [[c.load(:id=>5, :t_id=>30)], [c.load(:id=>15, :t_id=>40)]]
a.map(&:fs).map{|v| v.map(&:t)}.must_equal [[@c.load(:id=>30, :parent_id=>40)], [@c.load(:id=>40, :parent_id=>50)]]
@c.db.sqls.must_equal []
@c.dataset = @c.dataset.with_fetch([[{:id=>3, :parent_id=>1}, {:id=>13, :parent_id=>1}],
[{:id=>1, :parent_id=>nil}],
[{:id=>20, :parent_id=>nil}],
[{:id=>30, :parent_id=>nil}],
[{:id=>50, :parent_id=>nil}, {:id=>40, :parent_id=>nil}]
])
a.map(&:parent).map(&:parent).must_equal [@c.load(:id=>3, :parent_id=>1), @c.load(:id=>13, :parent_id=>1)]
@c.db.sqls.must_equal ["SELECT * FROM t WHERE (t.id IN (3, 13))"]
a.map(&:parent).map(&:parent).map(&:parent).must_equal [@c.load(:id=>1, :parent_id=>nil), @c.load(:id=>1, :parent_id=>nil)]
@c.db.sqls.must_equal ["SELECT * FROM t WHERE (t.id IN (1))"]
a.map(&:f).map(&:t).must_equal [@c.load(:id=>20, :parent_id=>nil), @c.load(:id=>30, :parent_id=>nil)]
@c.db.sqls.must_equal ["SELECT * FROM t WHERE id = 20", "SELECT * FROM t WHERE id = 30"]
a.map(&:fs).map{|v| v.map(&:t).map(&:parent)}.must_equal [[@c.load(:id=>40, :parent_id=>nil)], [@c.load(:id=>50, :parent_id=>nil)]]
@c.db.sqls.must_equal ["SELECT * FROM t WHERE (t.id IN (40, 50))"]
end
it "should skip frozen objects when eager loading for model objects" do
a = @c.eager_graph(:parent).
with_fetch([
{:id=>9, :parent_id=>6, :parent_id_0=>6, :parent_parent_id=>3},
{:id=>10, :parent_id=>7, :parent_id_0=>7, :parent_parent_id=>4},
{:id=>11, :parent_id=>8, :parent_id_0=>8, :parent_parent_id=>5}
]).all
@c.db.sqls.must_equal ["SELECT t.id, t.parent_id, parent.id AS parent_id_0, parent.parent_id AS parent_parent_id FROM t LEFT OUTER JOIN t AS parent ON (parent.id = t.parent_id)"]
a.must_equal [@c.load(:id=>9, :parent_id=>6), @c.load(:id=>10, :parent_id=>7), @c.load(:id=>11, :parent_id=>8)]
a.map(&:parent).must_equal [@c.load(:id=>6, :parent_id=>3), @c.load(:id=>7, :parent_id=>4), @c.load(:id=>8, :parent_id=>5)]
@c.db.sqls.must_equal []
@c.dataset = @c.dataset.with_fetch([[{:id=>3, :parent_id=>1}, {:id=>5, :parent_id=>2}], [{:id=>4, :parent_id=>nil}]])
parents = a.map(&:parent)
parents[1].freeze
parents[0].parent.must_equal @c.load(:id=>3, :parent_id=>1)
@c.db.sqls.must_equal ["SELECT * FROM t WHERE (t.id IN (3, 5))"]
parents[1].parent.must_equal @c.load(:id=>4, :parent_id=>nil)
@c.db.sqls.must_equal ["SELECT * FROM t WHERE id = 4"]
parents[2].parent.must_equal @c.load(:id=>5, :parent_id=>2)
@c.db.sqls.must_equal []
end
end
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