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(core) Automatically remove empty summary table rows

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Summary: When the `getSummarySourceGroup` function (used by the `$group` column) finds that the group is empty, raise a new special exception `EmptySummaryRow`. The engine catches this exception, avoids saving a value to the cell, and removes the record.

Test Plan: Updated several Python tests

Reviewers: georgegevoian

Reviewed By: georgegevoian

Subscribers: dsagal

Differential Revision: https://phab.getgrist.com/D3489
pull/221/head
Alex Hall 2 years ago
parent ddb80f111e
commit 0bdc82a170
9 changed files with 78 additions and 90 deletions
Show Stats Download Patch File Download Diff File

7
sandbox/grist/docmodel.py
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@ -221,7 +221,8 @@ class DocModel(object):
Marks a record for automatic removal. To use, create a formula in your table, e.g.
'setAutoRemove', which calls `table.docmodel.setAutoRemove(boolean_value)`. Whenever it gets
reevaluated and the boolean_value is true, the record will be automatically removed.
For now, it is only usable in metadata tables, although we could extend to user tables.
It's mostly used for metadata tables. It's also used for summary table rows with empty groups,
which requires a bit of extra care.
"""
if yes_or_no:
self._auto_remove_set.add(record)
@ -235,7 +236,9 @@ class DocModel(object):
# Sort to make sure removals are done in deterministic order.
gone_records = sorted(self._auto_remove_set)
self._auto_remove_set.clear()
self.remove(gone_records)
# setAutoRemove is called by formulas, notably summary tables, and shouldn't be blocked by ACL.
with self._engine.user_actions.indirect_actions():
self.remove(gone_records)
return bool(gone_records)
def remove(self, records):

20
sandbox/grist/engine.py
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@ -819,16 +819,21 @@ class Engine(object):
# For common-case formulas, all cells in a column are likely to fail in the same way,
# so don't bother trying more from this column until we've reordered.
return
making_request = False
save_value = True
value = None
try:
# We figure out if we've hit a cycle here. If so, we just let _recompute_on_cell
# know, so it can set the cell value appropriately and do some other bookkeeping.
cycle = required and (node, row_id) in self._locked_cells
value = self._recompute_one_cell(table, col, row_id, cycle=cycle, node=node)
except table_module.EmptySummaryRow:
# This record is going to be deleted after the update loop completes.
# Don't save a value for it because that will lead to broken undo actions
# trying to update a record that doesn't exist.
save_value = False
except RequestingError:
making_request = True
value = RequestingError
# The formula will be evaluated again soon when we have a response.
save_value = False
except OrderError as e:
if not required:
# We're out of order, but for a cell we were evaluating opportunistically.
@ -857,9 +862,7 @@ class Engine(object):
if column.is_validation_column_name(col.col_id):
value = (value in (True, None))
# When the formula raises a RequestingError, leave the existing value in the cell.
# The formula will be evaluated again soon when we have a response.
if not making_request:
if save_value:
# Convert the value, and if needed, set, and include into the returned action.
value = col.convert(value)
previous = col.raw_get(row_id)
@ -953,8 +956,9 @@ class Engine(object):
raise self._cell_required_error # pylint: disable=raising-bad-type
self.formula_tracer(col, record)
return result
except MemoryError:
except (MemoryError, table_module.EmptySummaryRow):
# Don't try to wrap memory errors.
# EmptySummaryRow should be handled in _recompute_step
raise
except: # pylint: disable=bare-except
# Since col.method runs untrusted user code, we use a bare except to catch all

17
sandbox/grist/table.py
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@ -536,9 +536,17 @@ class Table(object):
# the column named self._summary_helper_col_id is a single reference
# or a reference list.
lookup_value = rec if self._summary_simple else functions.CONTAINS(rec)
return self._summary_source_table.lookup_records(**{
result = self._summary_source_table.lookup_records(**{
self._summary_helper_col_id: lookup_value
})
# Remove rows with empty groups
self._engine.docmodel.setAutoRemove(rec, not result)
if not result:
# The group is empty, tell the engine that this record will be deleted
raise EmptySummaryRow()
return result
else:
return None
@ -633,3 +641,10 @@ class Table(object):
# creates a dependency and brings formula columns up-to-date.
self._engine._use_node(col.node, relation, row_ids)
return [col.get_cell_value(row_id) for row_id in row_ids]
class EmptySummaryRow(Exception):
"""
Special exception indicating that the summary group is empty and the row should be removed.
"""
pass

32
sandbox/grist/test_derived.py
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@ -158,14 +158,15 @@ class TestDerived(test_engine.EngineTestCase):
actions.BulkUpdateRecord("Orders", [2, 6, 7], {"product": ["B", "B", "C"]}),
actions.AddRecord("GristSummary_6_Orders", 7, {'year': 2013, 'product': 'B'}),
actions.AddRecord("GristSummary_6_Orders", 8, {'year': 2015, 'product': 'C'}),
actions.BulkUpdateRecord("GristSummary_6_Orders", [2,3,4,5,7,8], {
"amount": [15.0, 86.0, 0, 17.0, 15.0, 17.0]
actions.RemoveRecord("GristSummary_6_Orders", 4),
actions.BulkUpdateRecord("GristSummary_6_Orders", [2,3,5,7,8], {
"amount": [15.0, 86.0, 17.0, 15.0, 17.0]
}),
actions.BulkUpdateRecord("GristSummary_6_Orders", [2,3,4,5,7,8], {
"count": [1, 3, 0, 1, 1, 1]
actions.BulkUpdateRecord("GristSummary_6_Orders", [2,3,5,7,8], {
"count": [1, 3, 1, 1, 1]
}),
actions.BulkUpdateRecord("GristSummary_6_Orders", [2,3,4,5,7,8], {
"group": [[3], [4,5,6], [], [10], [2], [7]]
actions.BulkUpdateRecord("GristSummary_6_Orders", [2,3,5,7,8], {
"group": [[3], [4,5,6], [10], [2], [7]]
}),
],
})
@ -177,7 +178,6 @@ class TestDerived(test_engine.EngineTestCase):
[1, 2012, "A", 1, 15.0, [1]],
[2, 2013, "A", 1, 15.0, [3]],
[3, 2014, "B", 3, 86.0, [4,5,6]],
[4, 2014, "A", 0, 0.0, []],
[5, 2015, "A", 1, 17.0, [10]],
[6, 2015, "B", 2, 72.0, [8,9]],
[7, 2013, "B", 1, 15.0, [2]],
@ -274,7 +274,6 @@ class TestDerived(test_engine.EngineTestCase):
# Update a record so that a new line appears in the summary table.
out_actions_update = self.update_record("Orders", 1, year=2007)
self.assertPartialData("GristSummary_6_Orders", ["id", "year", "count", "amount", "group" ], [
[1, 2012, 0, 0.0, []],
[2, 2013, 2, 30.0, [2,3]],
[3, 2014, 3, 86.0, [4,5,6]],
[4, 2015, 4, 106.0, [7,8,9,10]],
@ -291,13 +290,18 @@ class TestDerived(test_engine.EngineTestCase):
])
self.assertPartialOutActions(out_actions_undo, {
"stored": [
actions.UpdateRecord("GristSummary_6_Orders", 1, {"group": [1]}),
actions.UpdateRecord("GristSummary_6_Orders", 1, {"count": 1}),
actions.UpdateRecord("GristSummary_6_Orders", 1, {"amount": 15.0}),
actions.AddRecord("GristSummary_6_Orders", 1, {
"amount": 15.0, "count": 1, "group": [1], "year": 2012
}),
actions.RemoveRecord("GristSummary_6_Orders", 5),
actions.UpdateRecord("Orders", 1, {"year": 2012}),
],
"calls": {"GristSummary_6_Orders": {"group": 1, "amount": 1, "count": 1},
"Orders": {"#lookup##summary#GristSummary_6_Orders": 1,
"#summary#GristSummary_6_Orders": 1}}
"calls": {
"GristSummary_6_Orders": {
"#lookup#": 1, "#lookup#year": 1, "group": 1, "amount": 1, "count": 1
},
"Orders": {
"#lookup##summary#GristSummary_6_Orders": 1, "#summary#GristSummary_6_Orders": 1,
},
},
})

2
sandbox/grist/test_display_cols.py
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@ -388,7 +388,7 @@ class TestUserActions(test_engine.EngineTestCase):
["RemoveRecord", "_grist_Tables_column", 28],
["RemoveColumn", "People", "gristHelper_Display2"],
],
"direct": [True, True, True, True, True, True],
"direct": [True, True, True, True, False, False],
"undo": [
["BulkUpdateRecord", "People", [1, 2, 3], {"gristHelper_Display2": ["Netflix", "HBO", "NBC"]}],
["BulkUpdateRecord", "People", [1, 2, 3], {"gristHelper_Display": ["Narcos", "Game of Thrones", "Today"]}],

8
sandbox/grist/test_summary.py
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@ -459,9 +459,10 @@ class Address:
self.assertPartialOutActions(out_actions, {
"stored": [
actions.UpdateRecord(source_tbl_name, 28, {'state': 'MA'}),
actions.BulkUpdateRecord(summary_tbl_name, [5,7], {'amount': [5.0 + 8.0, 0.0]}),
actions.BulkUpdateRecord(summary_tbl_name, [5,7], {'count': [2, 0]}),
actions.BulkUpdateRecord(summary_tbl_name, [5,7], {'group': [[25, 28], []]}),
actions.RemoveRecord(summary_tbl_name, 7),
actions.UpdateRecord(summary_tbl_name, 5, {'amount': 5.0 + 8.0}),
actions.UpdateRecord(summary_tbl_name, 5, {'count': 2}),
actions.UpdateRecord(summary_tbl_name, 5, {'group': [25, 28]}),
]
})
@ -522,7 +523,6 @@ class Address:
[ 4, "Chicago", "IL" , 1, 4. ],
[ 5, "Bedford", "MA" , 1, 108. ],
[ 6, "Buffalo", "NY" , 1, 7. ],
[ 7, "Bedford", "NY" , 0, 0. ],
[ 8, "Boston", "MA" , 1, 9. ],
[ 9, "Yonkers", "NY" , 1, 10. ],
[ 10, "Salem", "MA" , 1, 5.0 ],

10
sandbox/grist/test_summary2.py
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@ -146,11 +146,11 @@ class TestSummary2(test_engine.EngineTestCase):
self.assertPartialOutActions(out_actions, {
"stored": [
actions.UpdateRecord("Address", 28, {'state': 'MA'}),
actions.BulkUpdateRecord("GristSummary_7_Address", [5,7], {'amount': [5.0 + 8.0, 0.0]}),
actions.BulkUpdateRecord("GristSummary_7_Address", [5,7],
{'average': [6.5, objtypes.RaisedException(ZeroDivisionError())]}),
actions.BulkUpdateRecord("GristSummary_7_Address", [5,7], {'count': [2, 0]}),
actions.BulkUpdateRecord("GristSummary_7_Address", [5,7], {'group': [[25, 28], []]}),
actions.RemoveRecord("GristSummary_7_Address", 7),
actions.UpdateRecord("GristSummary_7_Address", 5, {'amount': 5.0 + 8.0}),
actions.UpdateRecord("GristSummary_7_Address", 5, {'average': 6.5}),
actions.UpdateRecord("GristSummary_7_Address", 5, {'count': 2}),
actions.UpdateRecord("GristSummary_7_Address", 5, {'group': [25, 28]}),
actions.UpdateRecord("GristSummary_7_Address3", 5, {'state': "MA"}),
actions.BulkUpdateRecord("GristSummary_7_Address4", [1,4],
{'amount': [1.+2+6+7+10+11, 5.+8+9]}),

69
sandbox/grist/test_summary_choicelist.py
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@ -168,19 +168,16 @@ class TestSummaryChoiceList(EngineTestCase):
[21, ["a"], ["c", "d"], "foo"],
])
# Verify that the summary table rows containing 'b' are empty
# Verify that the summary table rows containing 'b' are removed
self.assertTableData('GristSummary_6_Source', data=[
["id", "choices1", "group", "count"],
[1, "a", [21], 1],
[2, "b", [], 0],
])
self.assertTableData('GristSummary_6_Source2', data=[
["id", "choices1", "choices2", "group", "count"],
[1, "a", "c", [21], 1],
[2, "a", "d", [21], 1],
[3, "b", "c", [], 0],
[4, "b", "d", [], 0],
])
# Add 'e' to choices2
@ -190,7 +187,6 @@ class TestSummaryChoiceList(EngineTestCase):
self.assertTableData('GristSummary_6_Source', data=[
["id", "choices1", "group", "count"],
[1, "a", [21], 1],
[2, "b", [], 0],
])
# New row added for 'e'
@ -198,9 +194,7 @@ class TestSummaryChoiceList(EngineTestCase):
["id", "choices1", "choices2", "group", "count"],
[1, "a", "c", [21], 1],
[2, "a", "d", [21], 1],
[3, "b", "c", [], 0],
[4, "b", "d", [], 0],
[5, "a", "e", [21], 1],
[3, "a", "e", [21], 1],
])
# Empty choices1
@ -213,44 +207,26 @@ class TestSummaryChoiceList(EngineTestCase):
self.assertTableData('GristSummary_6_Source', data=[
["id", "choices1", "group", "count"],
[1, "a", [], 0],
[2, "b", [], 0],
[3, "", [21], 1],
[2, "", [21], 1],
])
self.assertTableData('GristSummary_6_Source2', data=[
["id", "choices1", "choices2", "group", "count"],
[1, "a", "c", [], 0],
[2, "a", "d", [], 0],
[3, "b", "c", [], 0],
[4, "b", "d", [], 0],
[5, "a", "e", [], 0],
[6, "", "c", [21], 1],
[7, "", "d", [21], 1],
[8, "", "e", [21], 1],
[4, "", "c", [21], 1],
[5, "", "d", [21], 1],
[6, "", "e", [21], 1],
])
# Remove record from source
self.remove_record("Source", 21)
# All summary rows are now empty
# All summary rows are now empty and thus removed
self.assertTableData('GristSummary_6_Source', data=[
["id", "choices1", "group", "count"],
[1, "a", [], 0],
[2, "b", [], 0],
[3, "", [], 0],
])
self.assertTableData('GristSummary_6_Source2', data=[
["id", "choices1", "choices2", "group", "count"],
[1, "a", "c", [], 0],
[2, "a", "d", [], 0],
[3, "b", "c", [], 0],
[4, "b", "d", [], 0],
[5, "a", "e", [], 0],
[6, "", "c", [], 0],
[7, "", "d", [], 0],
[8, "", "e", [], 0],
])
# Make rows with every combination of {a,b,ab} and {c,d,cd}
@ -297,14 +273,10 @@ class TestSummaryChoiceList(EngineTestCase):
summary_data = [
["id", "choices1", "choices2", "group", "count"],
[1, "a", "c", [101, 103, 107, 109], 4],
[2, "a", "d", [104, 106, 107, 109], 4],
[3, "b", "c", [102, 103, 108, 109], 4],
[2, "b", "c", [102, 103, 108, 109], 4],
[3, "a", "d", [104, 106, 107, 109], 4],
[4, "b", "d", [105, 106, 108, 109], 4],
[5, "a", "e", [], 0],
[6, "", "c", [], 0],
[7, "", "d", [], 0],
[8, "", "e", [], 0],
[9, "", "", [110], 1],
[5, "", "", [110], 1],
]
self.assertTableData('GristSummary_6_Source2', data=summary_data)
@ -429,18 +401,15 @@ class TestSummaryChoiceList(EngineTestCase):
[5, 6, 7, 8],
{'choices1': [u'aa', u'aa', u'bb', u'bb'],
'choices2': [u'c', u'd', u'c', u'd']}],
['BulkRemoveRecord', 'GristSummary_6_Source', [1, 2, 3, 4]],
['BulkUpdateRecord',
'GristSummary_6_Source',
[1, 2, 3, 4, 5, 6, 7, 8],
{'count': [0, 0, 0, 0, 1, 1, 1, 1]}],
[5, 6, 7, 8],
{'count': [1, 1, 1, 1]}],
['BulkUpdateRecord',
'GristSummary_6_Source',
[1, 2, 3, 4, 5, 6, 7, 8],
{'group': [['L'],
['L'],
['L'],
['L'],
['L', 21],
[5, 6, 7, 8],
{'group': [['L', 21],
['L', 21],
['L', 21],
['L', 21]]}]
@ -456,14 +425,6 @@ class TestSummaryChoiceList(EngineTestCase):
# left over from each rename
self.assertTableData('GristSummary_6_Source', data=[
["id", "choices1", "choices2", "group", "count"],
[1, "a", "c", [], 0],
[2, "a", "d", [], 0],
[3, "b", "c", [], 0],
[4, "b", "d", [], 0],
[5, "aa", "c", [], 0],
[6, "aa", "d", [], 0],
[7, "bb", "c", [], 0],
[8, "bb", "d", [], 0],
[9, "aa", "cc", [21], 1],
[10, "aa", "dd", [21], 1],
[11, "bb", "cc", [21], 1],

3
sandbox/grist/useractions.py
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@ -997,7 +997,8 @@ class UserActions(object):
def BulkRemoveRecord(self, table_id, row_ids):
# table_rec will not be found for metadata tables, but they are not summary tables anyway.
table_rec = self._docmodel.tables.lookupOne(tableId=table_id)
if table_rec and table_rec.summarySourceTable:
# docmodel.setAutoRemove is used for empty summary table rows, but does so 'indirectly'
if table_rec and table_rec.summarySourceTable and self._indirection_level == DIRECT_ACTION:
raise ValueError("Cannot remove record from summary table")
method = self._overrides.get(('BulkRemoveRecord', table_id), self.doBulkRemoveRecord)

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