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241 lines
9.7 KiB
241 lines
9.7 KiB
import actions
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import schema
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import logger
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from usertypes import strict_equal
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log = logger.Logger(__name__, logger.INFO)
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class DocActions(object):
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def __init__(self, engine):
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self._engine = engine
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#----------------------------------------
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# Actions on records.
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#----------------------------------------
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def AddRecord(self, table_id, row_id, column_values):
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self.BulkAddRecord(
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table_id, [row_id], {key: [val] for key, val in column_values.iteritems()})
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def BulkAddRecord(self, table_id, row_ids, column_values):
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table = self._engine.tables[table_id]
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for row_id in row_ids:
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assert row_id not in table.row_ids, \
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"docactions.[Bulk]AddRecord for existing record #%s" % row_id
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self._engine.out_actions.undo.append(actions.BulkRemoveRecord(table_id, row_ids).simplify())
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self._engine.add_records(table_id, row_ids, column_values)
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def RemoveRecord(self, table_id, row_id):
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return self.BulkRemoveRecord(table_id, [row_id])
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def BulkRemoveRecord(self, table_id, row_ids):
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table = self._engine.tables[table_id]
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# Collect the undo values, and unset all values in the column (i.e. set to defaults), just to
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# make sure we don't have stale values hanging around.
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undo_values = {}
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for column in table.all_columns.itervalues():
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if not column.is_formula() and column.col_id != "id":
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col_values = map(column.raw_get, row_ids)
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default = column.getdefault()
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# If this column had all default values, don't include it into the undo BulkAddRecord.
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if not all(strict_equal(val, default) for val in col_values):
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undo_values[column.col_id] = col_values
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for row_id in row_ids:
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column.unset(row_id)
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# Generate the undo action.
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self._engine.out_actions.undo.append(
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actions.BulkAddRecord(table_id, row_ids, undo_values).simplify())
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# Invalidate the deleted rows, so that anything that depends on them gets recomputed.
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self._engine.invalidate_records(table_id, row_ids)
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def UpdateRecord(self, table_id, row_id, columns):
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self.BulkUpdateRecord(
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table_id, [row_id], {key: [val] for key, val in columns.iteritems()})
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def BulkUpdateRecord(self, table_id, row_ids, columns):
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table = self._engine.tables[table_id]
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for row_id in row_ids:
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assert row_id in table.row_ids, \
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"docactions.[Bulk]UpdateRecord for non-existent record #%s" % row_id
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# Load the updated values.
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undo_values = {}
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for col_id, values in columns.iteritems():
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col = table.get_column(col_id)
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undo_values[col_id] = map(col.raw_get, row_ids)
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for (row_id, value) in zip(row_ids, values):
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col.set(row_id, value)
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# Generate the undo action.
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self._engine.out_actions.undo.append(
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actions.BulkUpdateRecord(table_id, row_ids, undo_values).simplify())
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# Invalidate the updated rows, just for the columns that got changed (and, as always,
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# anything that depends on them).
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self._engine.invalidate_records(table_id, row_ids, col_ids=columns.keys())
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def ReplaceTableData(self, table_id, row_ids, column_values):
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old_data = self._engine.fetch_table(table_id, formulas=False)
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self._engine.out_actions.undo.append(actions.ReplaceTableData(*old_data))
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self._engine.load_table(actions.TableData(table_id, row_ids, column_values))
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#----------------------------------------
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# Actions on columns.
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#----------------------------------------
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def AddColumn(self, table_id, col_id, col_info):
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table = self._engine.tables[table_id]
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assert not table.has_column(col_id), "Column %s already exists in %s" % (col_id, table_id)
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# Add the new column to the schema object maintained in the engine.
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self._engine.schema[table_id].columns[col_id] = schema.dict_to_col(col_info, col_id=col_id)
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self._engine.rebuild_usercode()
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self._engine.new_column_name(table)
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# Generate the undo action.
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self._engine.out_actions.undo.append(actions.RemoveColumn(table_id, col_id))
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def RemoveColumn(self, table_id, col_id):
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table = self._engine.tables[table_id]
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assert table.has_column(col_id), "Column %s not in table %s" % (col_id, table_id)
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# Generate (if needed) the undo action to restore the data.
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undo_action = None
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column = table.get_column(col_id)
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if not column.is_formula():
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default = column.getdefault()
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# Add to undo a BulkUpdateRecord for non-default values in the column being removed.
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row_ids = [r for r in table.row_ids if not strict_equal(column.raw_get(r), default)]
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undo_action = actions.BulkUpdateRecord(table_id, row_ids, {
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column.col_id: map(column.raw_get, row_ids)
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}).simplify()
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# Remove the specified column from the schema object.
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colinfo = self._engine.schema[table_id].columns.pop(col_id)
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self._engine.rebuild_usercode()
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# Generate the undo action(s).
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if undo_action:
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self._engine.out_actions.undo.append(undo_action)
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self._engine.out_actions.undo.append(actions.AddColumn(
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table_id, col_id, schema.col_to_dict(colinfo, include_id=False)))
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def RenameColumn(self, table_id, old_col_id, new_col_id):
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table = self._engine.tables[table_id]
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assert table.has_column(old_col_id), "Column %s not in table %s" % (old_col_id, table_id)
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assert not table.has_column(new_col_id), \
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"Column %s already exists in %s" % (new_col_id, table_id)
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old_column = table.get_column(old_col_id)
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# Replace the renamed column in the schema object.
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schema_table_info = self._engine.schema[table_id]
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colinfo = schema_table_info.columns.pop(old_col_id)
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schema_table_info.columns[new_col_id] = schema.SchemaColumn(
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new_col_id, colinfo.type, colinfo.isFormula, colinfo.formula)
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self._engine.rebuild_usercode()
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self._engine.new_column_name(table)
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# We replaced the old column with a new Column object (not strictly necessary, but simpler).
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# For a raw data column, we need to copy over the data from the old column object.
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new_column = table.get_column(new_col_id)
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new_column.copy_from_column(old_column)
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# Generate the undo action.
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self._engine.out_actions.undo.append(actions.RenameColumn(table_id, new_col_id, old_col_id))
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def ModifyColumn(self, table_id, col_id, col_info):
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table = self._engine.tables[table_id]
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assert table.has_column(col_id), "Column %s not in table %s" % (col_id, table_id)
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old_column = table.get_column(col_id)
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# Modify the specified column in the schema object.
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schema_table_info = self._engine.schema[table_id]
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old = schema_table_info.columns[col_id]
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new = schema.SchemaColumn(col_id,
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col_info.get('type', old.type),
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bool(col_info.get('isFormula', old.isFormula)),
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col_info.get('formula', old.formula))
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if new == old:
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log.info("ModifyColumn called which was a noop")
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return
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undo_col_info = {k: v for k, v in schema.col_to_dict(old, include_id=False).iteritems()
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if k in col_info}
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# Remove the column from the schema, then re-add it, to force creation of a new column object.
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schema_table_info.columns.pop(col_id)
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self._engine.rebuild_usercode()
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schema_table_info.columns[col_id] = new
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self._engine.rebuild_usercode()
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# Fill in the new column with the values from the old column.
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new_column = table.get_column(col_id)
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for row_id in table.row_ids:
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new_column.set(row_id, old_column.raw_get(row_id))
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# Generate the undo action.
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self._engine.out_actions.undo.append(actions.ModifyColumn(table_id, col_id, undo_col_info))
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#----------------------------------------
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# Actions on tables.
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#----------------------------------------
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def AddTable(self, table_id, columns):
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assert table_id not in self._engine.tables, "Table %s already exists" % table_id
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# Update schema, and re-generate the module code.
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self._engine.schema[table_id] = schema.SchemaTable(table_id, schema.dict_list_to_cols(columns))
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self._engine.rebuild_usercode()
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# Generate the undo action.
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self._engine.out_actions.undo.append(actions.RemoveTable(table_id))
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def RemoveTable(self, table_id):
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assert table_id in self._engine.tables, "Table %s doesn't exist" % table_id
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# Create undo actions to restore all the data records of this table.
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table_data = self._engine.fetch_table(table_id, formulas=False)
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undo_action = actions.BulkAddRecord(*table_data).simplify()
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if undo_action:
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self._engine.out_actions.undo.append(undo_action)
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# Update schema, and re-generate the module code.
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schema_table = self._engine.schema.pop(table_id)
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self._engine.rebuild_usercode()
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# Generate the undo action.
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self._engine.out_actions.undo.append(actions.AddTable(
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table_id, schema.cols_to_dict_list(schema_table.columns)))
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def RenameTable(self, old_table_id, new_table_id):
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assert old_table_id in self._engine.tables, "Table %s doesn't exist" % old_table_id
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assert new_table_id not in self._engine.tables, "Table %s already exists" % new_table_id
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old_table = self._engine.tables[old_table_id]
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# Update schema, and re-generate the module code.
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old = self._engine.schema.pop(old_table_id)
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self._engine.schema[new_table_id] = schema.SchemaTable(new_table_id, old.columns)
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self._engine.rebuild_usercode()
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# Copy over all columns from the old table to the new.
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new_table = self._engine.tables[new_table_id]
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for new_column in new_table.all_columns.itervalues():
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if not new_column.is_formula():
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new_column.copy_from_column(old_table.get_column(new_column.col_id))
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new_table.grow_to_max() # We need to bring formula columns to the right size too.
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# Generate the undo action.
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self._engine.out_actions.undo.append(actions.RenameTable(new_table_id, old_table_id))
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# end
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