def test_join_elimination(self, verbose=False):
meta1 = VideoMetaInfo(file='v1', c_format=VideoFormat.MOV, fps=30)
video1 = SimpleVideoLoader(video_metadata=meta1)
meta2 = VideoMetaInfo(file='v2', c_format=VideoFormat.MOV, fps=30)
video2 = SimpleVideoLoader(video_metadata=meta2)
projection_output = ['v1.1', 'v2.2']
root = LogicalProjectionPlan(videos=[video1, video2],
column_ids=projection_output,
foreign_column_ids=['v2.2'])
# Creating Expression for Select: Expression is basically where v1.1 == v2.2
# Also creating a foreign key constraint for v1 where it requires v2.2
# hence join elimination should delete the join node and just return all of v1.1 for select
tup1 = TupleValueExpression(col_idx=1)
tup2 = TupleValueExpression(col_idx=2)
expression = ComparisonExpression(
exp_type=ExpressionType.COMPARE_EQUAL, left=tup1, right=tup2)
# used both videos because purposely placed BEFORE the join
s1 = SeqScanPlan(predicate=expression,
column_ids=['v1.1', 'v2.2'],
videos=[video1, video2],
foreign_column_ids=['v2.2'])
s1.parent = root
j1 = LogicalInnerJoinPlan(videos=[video1, video2],
join_ids=['v1.1', 'v2.2'])
j1.parent = s1
t1 = TableRef(video=video1, table_info=TableInfo(table_name='v1'))
t2 = TableRef(video=video2, table_info=TableInfo(table_name='v2'))
t1.parent = j1
t2.parent = j1
root.set_children([s1])
s1.set_children([j1])
j1.set_children([t1, t2])
rule_list = [Rules.JOIN_ELIMINATION]
if verbose:
print('Original Plan Tree')
print(root)
qo = RuleQueryOptimizer()
new_tree = qo.run(root, rule_list)
if verbose:
print('New Plan Tree')
print(new_tree)
self.assertIsNone(root.parent)
self.assertEqual(type(t1.parent), SeqScanPlan)
self.assertEqual(type(s1.children[0]), TableRef)
self.assertEqual(len(s1.children), 1)
self.assertEqual(len(s1.foreign_column_ids), 0)
self.assertTrue('v1.2' in root.column_ids)
self.assertEqual(len(root.column_ids), 2)
self.assertEqual(len(root.foreign_column_ids), 0)
self.assertEqual(type(root.children[0]), SeqScanPlan)
def test_shouldnot_simply_predicate(verbose=False):
meta1 = VideoMetaInfo(file='v1', c_format=VideoFormat.MOV, fps=30)
video1 = SimpleVideoLoader(video_metadata=meta1)
# Creating Expression for Select: Expression is basically where v1.7 == 4
const = ConstantValueExpression(value=4)
tup = TupleValueExpression(col_idx=int(7))
expression = ComparisonExpression(exp_type=ExpressionType.COMPARE_EQUAL,
left=tup,
right=const)
s1 = SeqScanPlan(predicate=expression,
column_ids=['v1.7'],
videos=[video1],
foreign_column_ids=[])
projection_output = ['v1.3', 'v1.4']
root = LogicalProjectionPlan(videos=[video1],
column_ids=projection_output,
foreign_column_ids=[])
t1 = TableRef(video=video1, table_info=TableInfo(table_name='v1'))
root.set_children([s1])
s1.parent = root
s1.set_children([t1])
t1.parent = s1
rule_list = [Rules.SIMPLIFY_PREDICATE]
if verbose:
print('Original Plan Tree')
print(root)
qo = RuleQueryOptimizer()
new_tree = qo.run(root, rule_list)
if verbose:
print('New Plan Tree')
print(new_tree)
def test_simple_predicate_pushdown(self, verbose=False):
# Creating the videos
meta1 = VideoMetaInfo(file='v1', c_format=VideoFormat.MOV, fps=30)
video1 = SimpleVideoLoader(video_metadata=meta1)
meta2 = VideoMetaInfo(file='v2', c_format=VideoFormat.MOV, fps=30)
video2 = SimpleVideoLoader(video_metadata=meta2)
projection_output = ['v1.1', 'v2.2']
root = LogicalProjectionPlan(videos=[video1, video2],
column_ids=projection_output,
foreign_column_ids=[])
# Creating Expression for Select: Expression is basically where v1.1 == 4
const = ConstantValueExpression(value=4)
tup = TupleValueExpression(
col_idx=int(projection_output[0].split('.')[1]))
expression = ComparisonExpression(
exp_type=ExpressionType.COMPARE_EQUAL, left=tup, right=const)
# used both videos because purposely placed BEFORE the join
s1 = SeqScanPlan(predicate=expression,
column_ids=['v1.1'],
videos=[video1, video2],
foreign_column_ids=[])
s1.parent = root
j1 = LogicalInnerJoinPlan(videos=[video1, video2],
join_ids=['v1.3', 'v2.3'])
j1.parent = s1
t1 = TableRef(video=video1, table_info=TableInfo(table_name='v1'))
t2 = TableRef(video=video2, table_info=TableInfo(table_name='v2'))
s1.set_children([j1])
t1.parent = j1
t2.parent = j1
j1.set_children([t1, t2])
root.set_children([s1])
rule_list = [Rules.PREDICATE_PUSHDOWN]
if verbose:
print('Original Plan Tree')
print(root)
qo = RuleQueryOptimizer()
new_tree = qo.run(root, rule_list)
if verbose:
print('New Plan Tree')
print(new_tree)
self.assertIsNone(root.parent, None)
self.assertEqual(root.children, [j1])
self.assertEqual(j1.parent, root)
self.assertEqual(j1.children, [s1, t2])
self.assertEqual(s1.parent, j1)
self.assertEqual(s1.videos, [video1])
self.assertEqual(t2.parent, j1)
self.assertEqual(s1.children, [t1])
self.assertEqual(t1.parent, s1)
def test_simple_projection_pushdown_join(verbose=False):
# Creating the videos
meta1 = VideoMetaInfo(file='v1', c_format=VideoFormat.MOV, fps=30)
video1 = SimpleVideoLoader(video_metadata=meta1)
meta2 = VideoMetaInfo(file='v2', c_format=VideoFormat.MOV, fps=30)
video2 = SimpleVideoLoader(video_metadata=meta2)
projection_output = ['v1.3', 'v2.4']
root = LogicalProjectionPlan(videos=[video1, video2],
column_ids=projection_output,
foreign_column_ids=[])
j1 = LogicalInnerJoinPlan(videos=[video1, video2],
join_ids=['v1.1', 'v2.1'])
j1.parent = root
t1 = TableRef(video=video1, table_info=TableInfo(table_name='v1'))
t2 = TableRef(video=video2, table_info=TableInfo(table_name='v2'))
t1.parent = j1
t2.parent = j1
j1.set_children([t1, t2])
root.set_children([j1])
rule_list = [Rules.PROJECTION_PUSHDOWN_JOIN]
if verbose:
print('Original Plan Tree')
print(root)
qo = RuleQueryOptimizer()
new_tree = qo.run(root, rule_list)
if verbose:
print('New Plan Tree')
print(new_tree)
assert root.parent is None
assert root.children == [j1]
assert j1.parent == root
assert type(j1.children[0]) == LogicalProjectionPlan
assert type(j1.children[1]) == LogicalProjectionPlan
assert 'v1.1' in j1.children[0].column_ids
assert 'v1.3' in j1.children[0].column_ids
assert 'v2.1' in j1.children[1].column_ids
assert 'v2.4' in j1.children[1].column_ids
assert type(t2.parent) == LogicalProjectionPlan
assert type(t1.parent) == LogicalProjectionPlan
assert j1.children[0].children == [t1]
assert j1.children[1].children == [t2]
print('Simple Projection Pushdown Join Test Successful!')
def test_simple_projection_pushdown_select(verbose=False):
meta1 = VideoMetaInfo(file='v1', c_format=VideoFormat.MOV, fps=30)
video1 = SimpleVideoLoader(video_metadata=meta1)
# Creating Expression for Select: Expression is basically where v2.7 == 4
const = ConstantValueExpression(value=4)
tup = TupleValueExpression(col_idx=int(7))
expression = ComparisonExpression(exp_type=ExpressionType.COMPARE_EQUAL,
left=tup,
right=const)
s1 = SeqScanPlan(predicate=expression,
column_ids=['v1.7'],
videos=[video1],
foreign_column_ids=[])
projection_output = ['v1.3', 'v1.4']
root = LogicalProjectionPlan(videos=[video1],
column_ids=projection_output,
foreign_column_ids=[])
t1 = TableRef(video=video1, table_info=TableInfo(table_name='v1'))
root.set_children([s1])
s1.parent = root
s1.set_children([t1])
t1.parent = s1
rule_list = [Rules.PROJECTION_PUSHDOWN_SELECT]
if verbose:
print('Original Plan Tree')
print(root)
qo = RuleQueryOptimizer()
new_tree = qo.run(root, rule_list)
if verbose:
print('New Plan Tree')
print(new_tree)
assert root.parent is None
assert root.children == [s1]
assert s1.parent == root
assert len(s1.children) == 1
assert type(s1.children[0]) == LogicalProjectionPlan
assert 'v1.7' in s1.children[0].column_ids
assert 'v1.3' in s1.children[0].column_ids
assert 'v1.4' in s1.children[0].column_ids
assert type(t1.parent) == LogicalProjectionPlan
assert s1.children[0].children == [t1]
print('Simple Projection Pushdown Select Test Successful!')
def test_should_simply_predicate(self, verbose=False):
meta1 = VideoMetaInfo(file='v1', c_format=VideoFormat.MOV, fps=30)
video1 = SimpleVideoLoader(video_metadata=meta1)
# Creating Expression for Select: Expression is basically where 0==1
const1 = ConstantValueExpression(value=0)
const2 = ConstantValueExpression(value=1)
expression = ComparisonExpression(
exp_type=ExpressionType.COMPARE_EQUAL, left=const1, right=const2)
s1 = SeqScanPlan(predicate=expression,
column_ids=[],
videos=[],
foreign_column_ids=[])
projection_output = ['v1.3', 'v1.4']
root = LogicalProjectionPlan(videos=[video1],
column_ids=projection_output,
foreign_column_ids=[])
t1 = TableRef(video=video1, table_info=TableInfo(table_name='v1'))
root.set_children([s1])
s1.parent = root
s1.set_children([t1])
t1.parent = s1
rule_list = [Rules.SIMPLIFY_PREDICATE]
if verbose:
print('Original Plan Tree')
print(root)
qo = RuleQueryOptimizer()
new_tree = qo.run(root, rule_list)
if verbose:
print('New Plan Tree')
print(new_tree)
self.assertIsNone(root.parent)
self.assertEqual(root.children, [t1])
self.assertEqual(t1.parent, root)
self.assertEqual(len(root.children), 1)
self.assertTrue('v1.3' in root.children[0].column_ids)
self.assertTrue('v1.4' in root.children[0].column_ids)
self.assertEqual(type(t1.parent), LogicalProjectionPlan)
self.assertEqual(root.children[0].children, [t1])
def test_simple_query(self, verbose=False):
parser = EvaFrameQLParser()
query = "SELECT CLASS FROM TAIPAI;"
eva_statement_list = parser.parse(query)
plan_tree = Statement2Plantree.convert(eva_statement_list)
self.assertIsNone(plan_tree.parent)
self.assertTrue(type(plan_tree), SeqScanPlan)
self.assertTrue(len(plan_tree.children) == 1)
self.assertTrue(type(plan_tree.children[0]) == TableRef)
rule_list = [Rules.PREDICATE_PUSHDOWN, Rules.PROJECTION_PUSHDOWN_JOIN, Rules.PROJECTION_PUSHDOWN_SELECT]
if verbose:
print('Original Plan Tree')
print(plan_tree)
qo = RuleQueryOptimizer()
new_tree = qo.run(plan_tree, rule_list)
if verbose:
print('New Plan Tree')
print(new_tree)
self.assertIsNone(new_tree.parent)
self.assertTrue(type(new_tree), SeqScanPlan)
self.assertTrue(len(new_tree.children) == 1)
self.assertTrue(type(new_tree.children[0]) == TableRef)
def test_transitive_closure(self, verbose=False):
meta1 = VideoMetaInfo(file='v1', c_format=VideoFormat.MOV, fps=30)
video1 = SimpleVideoLoader(video_metadata=meta1)
meta2 = VideoMetaInfo(file='v2', c_format=VideoFormat.MOV, fps=30)
video2 = SimpleVideoLoader(video_metadata=meta2)
projection_output = ['v1.1', 'v1.2', 'v2.2']
root = LogicalProjectionPlan(videos=[video1, video2],
column_ids=projection_output,
foreign_column_ids=[])
# Creating Expression for Select: Expression is basically where v1.1 == 43
const = ConstantValueExpression(value=43)
tup = TupleValueExpression(
col_idx=int(projection_output[0].split('.')[1]))
expression = ComparisonExpression(
exp_type=ExpressionType.COMPARE_EQUAL, left=tup, right=const)
s1 = SeqScanPlan(
predicate=expression,
column_ids=['v1.1'],
videos=[video1],
foreign_column_ids=[]
) # For later Check if videos should also contain video2
s1.parent = root
root.set_children([s1])
# Declaring the join node
j1 = LogicalInnerJoinPlan(videos=[video1, video2],
join_ids=['v1.1', 'v2.1'])
j1.parent = s1
s1.set_children([j1])
t1 = TableRef(video=video1, table_info=TableInfo(table_name='v1'))
t2 = TableRef(video=video2, table_info=TableInfo(table_name='v2'))
# adding parent and children pointers
t1.parent = j1
t2.parent = j1
j1.set_children([t1, t2])
rule_list = [Rules.TRANSITIVE_CLOSURE]
if verbose:
print('Original Plan Tree')
print(root)
qo = RuleQueryOptimizer()
new_tree = qo.run(root, rule_list)
if verbose:
print('New Plan Tree')
print(new_tree)
self.assertIsNone(root.parent)
self.assertTrue(root.children, [j1])
self.assertTrue(j1.parent, root)
self.assertTrue(type(j1.parent), LogicalProjectionPlan)
self.assertEqual(len(j1.children), 2)
self.assertTrue(type(j1.children[0]), SeqScanPlan)
self.assertTrue(type(j1.children[1]), SeqScanPlan)
self.assertTrue(t1.parent in j1.children)
self.assertTrue(t2.parent in j1.children)
def test_double_join_projection_pushdown(self, verbose=False):
meta1 = VideoMetaInfo(file='v1', c_format=VideoFormat.MOV, fps=30)
video1 = SimpleVideoLoader(video_metadata=meta1)
meta2 = VideoMetaInfo(file='v2', c_format=VideoFormat.MOV, fps=30)
video2 = SimpleVideoLoader(video_metadata=meta2)
meta3 = VideoMetaInfo(file='v3', c_format=VideoFormat.MOV, fps=30)
video3 = SimpleVideoLoader(video_metadata=meta3)
projection_output = ['v1.1', 'v2.2', 'v3.4']
root = LogicalProjectionPlan(videos=[video1, video2, video3],
column_ids=projection_output,
foreign_column_ids=[])
j1 = LogicalInnerJoinPlan(videos=[video1, video2],
join_ids=['v1.3', 'v2.3'])
j2 = LogicalInnerJoinPlan(videos=[video1, video2, video3],
join_ids=['v1.3', 'v2.3', 'v3.3'])
j1.parent = j2
j2.parent = root
t1 = TableRef(video=video1, table_info=TableInfo(table_name='v1'))
t2 = TableRef(video=video2, table_info=TableInfo(table_name='v2'))
t3 = TableRef(video=video3, table_info=TableInfo(table_name='v3'))
t1.parent = j1
t2.parent = j1
j2.set_children([t3, j1])
t3.parent = j2
j1.set_children([t1, t2])
root.set_children([j2])
rule_list = [Rules.PROJECTION_PUSHDOWN_JOIN]
if verbose:
print('Original Plan Tree')
print(root)
qo = RuleQueryOptimizer()
new_tree = qo.run(root, rule_list)
if verbose:
print('New Plan Tree')
print(new_tree)
self.assertIsNone(root.parent)
self.assertTrue('v1.1' in root.column_ids)
self.assertTrue('v2.2' in root.column_ids)
self.assertTrue('v3.4' in root.column_ids)
self.assertEqual(len(root.children), 1)
self.assertEqual(root.children[0], j2)
self.assertEqual(j2.parent, root)
self.assertEqual(len(j2.videos), 3)
self.assertTrue(video1 in j2.videos)
self.assertTrue(video2 in j2.videos)
self.assertTrue(video3 in j2.videos)
self.assertEqual(len(j2.children), 2)
self.assertTrue(j1 in j2.children)
j1_ix = j2.children.index(j1)
pix = 1 - j1_ix
self.assertEqual(type(j2.children[pix]), LogicalProjectionPlan)
self.assertEqual(len(j2.children[pix].column_ids), 2)
self.assertTrue('v3.4' in j2.children[pix].column_ids)
self.assertTrue('v3.3' in j2.children[pix].column_ids)
self.assertEqual(j2.children[pix].parent, j2)
self.assertEqual(len(j2.children[pix].children), 1)
self.assertEqual(j2.children[pix].children[0], t3)
self.assertEqual(len(j1.videos), 2)
self.assertTrue(video1 in j1.videos)
self.assertTrue(video2 in j1.videos)
self.assertEqual(len(j1.children), 2)
self.assertEqual(type(j1.children[0]), LogicalProjectionPlan)
self.assertEqual(type(j1.children[1]), LogicalProjectionPlan)
self.assertEqual(len(j1.children[0].column_ids), 2)
self.assertEqual(len(j1.children[0].children), 1)
self.assertEqual(j1.children[0].children[0], t1)
self.assertEqual(len(j1.children[1].children), 1)
self.assertEqual(j1.children[1].children[0], t2)
self.assertTrue('v1.3' in j1.children[0].column_ids)
self.assertTrue('v1.1' in j1.children[0].column_ids)
self.assertEqual(len(j1.children[1].column_ids), 2)
self.assertTrue('v2.3' in j1.children[1].column_ids)
self.assertTrue('v2.2' in j1.children[1].column_ids)
self.assertEqual(j1.children[0].parent, j1)
self.assertEqual(j1.children[1].parent, j1)
def test_combined_projection_pushdown(self, verbose=False):
# Creating the videos
meta1 = VideoMetaInfo(file='v1', c_format=VideoFormat.MOV, fps=30)
video1 = SimpleVideoLoader(video_metadata=meta1)
meta2 = VideoMetaInfo(file='v2', c_format=VideoFormat.MOV, fps=30)
video2 = SimpleVideoLoader(video_metadata=meta2)
projection_output = ['v1.3', 'v2.4']
root = LogicalProjectionPlan(videos=[video1, video2],
column_ids=projection_output,
foreign_column_ids=[])
j1 = LogicalInnerJoinPlan(videos=[video1, video2],
join_ids=['v1.1', 'v2.1'])
j1.parent = root
const = ConstantValueExpression(value=4)
tup = TupleValueExpression(col_idx=int(7))
expression = ComparisonExpression(
exp_type=ExpressionType.COMPARE_EQUAL, left=tup, right=const)
s1 = SeqScanPlan(predicate=expression,
column_ids=['v2.7'],
videos=[video1],
foreign_column_ids=[])
s1.parent = j1
t1 = TableRef(video=video1, table_info=TableInfo(table_name='v1'))
t2 = TableRef(video=video2, table_info=TableInfo(table_name='v2'))
s1.set_children([t2])
t1.parent = j1
t2.parent = s1
j1.set_children([t1, s1])
root.set_children([j1])
rule_list = [
Rules.PROJECTION_PUSHDOWN_JOIN, Rules.PROJECTION_PUSHDOWN_SELECT
]
if verbose:
print('Original Plan Tree')
print(root)
qo = RuleQueryOptimizer()
new_tree = qo.run(root, rule_list)
if verbose:
print('New Plan Tree')
print(new_tree)
self.assertIsNone(root.parent)
self.assertEqual(root.children, [j1])
self.assertEqual(j1.parent, root)
self.assertEqual(type(j1.children[0]), LogicalProjectionPlan)
self.assertEqual(type(j1.children[1]), LogicalProjectionPlan)
self.assertEqual(type(s1.parent), LogicalProjectionPlan)
self.assertTrue('v2.1' in s1.parent.column_ids)
self.assertTrue('v2.4' in s1.parent.column_ids)
self.assertTrue(s1.parent in j1.children)
self.assertEqual(len(s1.children), 1)
self.assertEqual(type(s1.children[0]), LogicalProjectionPlan)
self.assertTrue('v2.7' in s1.children[0].column_ids)
self.assertTrue('v2.1' in s1.children[0].column_ids)
self.assertTrue('v2.4' in s1.children[0].column_ids)
self.assertEqual(type(t1.parent), LogicalProjectionPlan)
self.assertTrue('v1.1' in t1.parent.column_ids)
self.assertTrue('v1.3' in t1.parent.column_ids)
self.assertTrue(t1.parent in j1.children)
self.assertEqual(s1.children[0].children, [t2])
def test_double_join_projection_pushdown(verbose=False):
meta1 = VideoMetaInfo(file='v1', c_format=VideoFormat.MOV, fps=30)
video1 = SimpleVideoLoader(video_metadata=meta1)
meta2 = VideoMetaInfo(file='v2', c_format=VideoFormat.MOV, fps=30)
video2 = SimpleVideoLoader(video_metadata=meta2)
meta3 = VideoMetaInfo(file='v3', c_format=VideoFormat.MOV, fps=30)
video3 = SimpleVideoLoader(video_metadata=meta3)
projection_output = ['v1.1', 'v2.2', 'v3.4']
root = LogicalProjectionPlan(videos=[video1, video2, video3],
column_ids=projection_output,
foreign_column_ids=[])
j1 = LogicalInnerJoinPlan(videos=[video1, video2],
join_ids=['v1.3', 'v2.3'])
j2 = LogicalInnerJoinPlan(videos=[video1, video2, video3],
join_ids=['v1.3', 'v2.3', 'v3.3'])
j1.parent = j2
j2.parent = root
t1 = TableRef(video=video1, table_info=TableInfo(table_name='v1'))
t2 = TableRef(video=video2, table_info=TableInfo(table_name='v2'))
t3 = TableRef(video=video3, table_info=TableInfo(table_name='v3'))
t1.parent = j1
t2.parent = j1
j2.set_children([t3, j1])
t3.parent = j2
j1.set_children([t1, t2])
root.set_children([j2])
rule_list = [Rules.PROJECTION_PUSHDOWN_JOIN]
if verbose:
print('Original Plan Tree')
print(root)
qo = RuleQueryOptimizer()
new_tree = qo.run(root, rule_list)
if verbose:
print('New Plan Tree')
print(new_tree)
assert root.parent is None
assert 'v1.1' in root.column_ids
assert 'v2.2' in root.column_ids
assert 'v3.4' in root.column_ids
assert len(root.children) == 1
assert root.children[0] == j2
assert j2.parent == root
assert len(j2.videos) == 3
assert video1 in j2.videos
assert video2 in j2.videos
assert video3 in j2.videos
assert len(j2.children) == 2
assert j1 in j2.children
j1_ix = j2.children.index(j1)
pix = 1 - j1_ix
assert type(j2.children[pix]) == LogicalProjectionPlan
assert len(j2.children[pix].column_ids) == 2
assert 'v3.4' in j2.children[pix].column_ids
assert 'v3.3' in j2.children[pix].column_ids
assert j2.children[pix].parent == j2
assert len(j2.children[pix].children) == 1
assert j2.children[pix].children[0] == t3
assert len(j1.videos) == 2
assert video1 in j1.videos
assert video2 in j1.videos
assert len(j1.children) == 2
assert type(j1.children[0]) == LogicalProjectionPlan
assert type(j1.children[1]) == LogicalProjectionPlan
assert len(j1.children[0].column_ids) == 2
assert len(j1.children[0].children) == 1
assert j1.children[0].children[0] == t1
assert len(j1.children[1].children) == 1
assert j1.children[1].children[0] == t2
assert 'v1.3' in j1.children[0].column_ids
assert 'v1.1' in j1.children[0].column_ids
assert len(j1.children[1].column_ids) == 2
assert 'v2.3' in j1.children[1].column_ids
assert 'v2.2' in j1.children[1].column_ids
assert j1.children[0].parent == j1
assert j1.children[1].parent == j1
print('Double join Projection Pushdown Successful!')
def test_double_join_predicate_pushdown(verbose=False):
meta1 = VideoMetaInfo(file='v1', c_format=VideoFormat.MOV, fps=30)
video1 = SimpleVideoLoader(video_metadata=meta1)
meta2 = VideoMetaInfo(file='v2', c_format=VideoFormat.MOV, fps=30)
video2 = SimpleVideoLoader(video_metadata=meta2)
meta3 = VideoMetaInfo(file='v3', c_format=VideoFormat.MOV, fps=30)
video3 = SimpleVideoLoader(video_metadata=meta3)
projection_output = ['v1.1', 'v2.2', 'v3.4']
root = LogicalProjectionPlan(videos=[video1, video2, video3],
column_ids=projection_output,
foreign_column_ids=[])
# Creating Expression for Select: Expression is basically where v3.3 == 4
const = ConstantValueExpression(value=4)
tup = TupleValueExpression(col_idx=int(projection_output[2].split('.')[1]))
expression = ComparisonExpression(exp_type=ExpressionType.COMPARE_EQUAL,
left=tup,
right=const)
# used both videos because purposely placed BEFORE the join
s1 = SeqScanPlan(predicate=expression,
column_ids=['v3.3'],
videos=[video1, video2, video3],
foreign_column_ids=[])
s1.parent = root
j1 = LogicalInnerJoinPlan(videos=[video1, video2],
join_ids=['v1.3', 'v2.3'])
j2 = LogicalInnerJoinPlan(videos=[video1, video2, video3],
join_ids=['v1.3', 'v2.3', 'v3.3'])
j1.parent = j2
t1 = TableRef(video=video1, table_info=TableInfo(table_name='v1'))
t2 = TableRef(video=video2, table_info=TableInfo(table_name='v2'))
t3 = TableRef(video=video3, table_info=TableInfo(table_name='v3'))
s1.set_children([j2])
t1.parent = j1
t2.parent = j1
j2.set_children([j1, t3])
t3.parent = j2
j1.set_children([t1, t2])
root.set_children([s1])
rule_list = [Rules.PREDICATE_PUSHDOWN]
if verbose:
print('Original Plan Tree')
print(root)
qo = RuleQueryOptimizer()
new_tree = qo.run(root, rule_list)
if verbose:
print('New Plan Tree')
print(new_tree)
assert root.parent is None
assert len(root.children) == 1
assert root.children[0].parent == root
assert j2.parent == root
assert len(j2.children) == 2
assert j2.children[0] == j1
assert j2.children[1] == s1
assert s1.parent == j2
assert j1.parent == j2
assert len(s1.videos) == 1
assert s1.videos[0] == video3
assert len(s1.children) == 1
assert s1.children[0] == t3
assert t3.parent == s1
assert len(j1.children) == 2
assert j1.children[0] == t1
assert j1.children[1] == t2
assert t1.parent == j1
assert t2.parent == j1
print('Double join predicate Pushdown Successful!')
def test_both_projection_pushdown_and_predicate_pushdown(verbose=False):
meta1 = VideoMetaInfo(file='v1', c_format=VideoFormat.MOV, fps=30)
video1 = SimpleVideoLoader(video_metadata=meta1)
meta2 = VideoMetaInfo(file='v2', c_format=VideoFormat.MOV, fps=30)
video2 = SimpleVideoLoader(video_metadata=meta2)
projection_output = ['v1.1', 'v2.2']
root = LogicalProjectionPlan(videos=[video1, video2],
column_ids=projection_output,
foreign_column_ids=[])
# Creating Expression for Select: Expression is basically where v1.1 == 4
const = ConstantValueExpression(value=4)
tup = TupleValueExpression(col_idx=int(projection_output[0].split('.')[1]))
expression = ComparisonExpression(exp_type=ExpressionType.COMPARE_EQUAL,
left=tup,
right=const)
# used both videos because purposely placed BEFORE the join
s1 = SeqScanPlan(predicate=expression,
column_ids=['v1.1'],
videos=[video1, video2],
foreign_column_ids=[])
s1.parent = root
j1 = LogicalInnerJoinPlan(videos=[video1, video2],
join_ids=['v1.3', 'v2.3'])
j1.parent = s1
t1 = TableRef(video=video1, table_info=TableInfo(table_name='v1'))
t2 = TableRef(video=video2, table_info=TableInfo(table_name='v2'))
s1.set_children([j1])
t1.parent = j1
t2.parent = j1
j1.set_children([t1, t2])
root.set_children([s1])
rule_list = [
Rules.PREDICATE_PUSHDOWN, Rules.PROJECTION_PUSHDOWN_JOIN,
Rules.PROJECTION_PUSHDOWN_SELECT
]
if verbose:
print('Original Plan Tree')
print(root)
qo = RuleQueryOptimizer()
new_tree = qo.run(root, rule_list)
if verbose:
print('New Plan Tree')
print(new_tree)
assert root.parent is None
assert root.children == [j1]
assert j1.parent == root
assert len(j1.children) == 2
assert s1 in j1.children
assert s1.parent == j1
assert s1.videos == [video1]
assert len(s1.children) == 1
assert type(s1.children[0]) == LogicalProjectionPlan
assert 'v1.1' in s1.children[0].column_ids
assert 'v1.3' in s1.children[0].column_ids
assert s1.children[0].children == [t1]
assert t1.parent == s1.children[0]
s1_ix = j1.children.index(s1)
if s1_ix == 0:
proj_ix = 1
else:
proj_ix = 0
assert type(j1.children[proj_ix]) == LogicalProjectionPlan
assert j1.children[proj_ix].parent == j1
assert 'v2.3' in j1.children[proj_ix].column_ids
assert 'v2.2' in j1.children[proj_ix].column_ids
assert t2.parent == j1.children[proj_ix]
print(
'Combined Projection Pushdown and Predicate Pushdown Test Successful!')