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a899e1db41
Co-authored-by: Mike Bridge <michael.bridge@ext.preset.io> Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
70 lines
2.9 KiB
Python
70 lines
2.9 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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"""``before_flush`` listener that captures a baseline version (version 0)
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for entities being updated for the first time after the versioning
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migration.
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Package layout (descends from public entry point to leaf builders):
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* :mod:`.listener` — public :func:`register_baseline_listener` that
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wires the before-flush event on ``db.session``.
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* :mod:`.dirty` — :func:`force_parent_dirty_on_child_change` and
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:func:`pin_audit_columns`: promote a parent into ``session.dirty``
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when only its versioned children changed, and pin its audit columns
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so the synthetic flush doesn't bump them.
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* :mod:`.collection` — discovery: which parents need a baseline row?
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Holds ``VERSIONED_MODELS`` (populated at app start),
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:func:`collect_parents_to_baseline`, the
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:func:`child_to_parent_registry` mapping, and the per-parent
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Continuum-shadow-table lookups.
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* :mod:`.insertion` — parent baseline insertion + child-handler
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dispatch.
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* :mod:`.children` — per-entity child baseline handlers
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(``_baseline_dataset_children`` / ``_baseline_dashboard_children``)
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plus the leaf helpers that synthesize child / slice shadow rows.
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* :mod:`.shadow` — low-level :func:`insert_baseline_shadow_row`
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helper used by every module that writes a shadow row, and the
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:data:`CONTINUUM_BOOKKEEPING_COLUMNS` constant re-used outside this
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package (the change-record listener and ``queries.py`` filter on it).
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The re-exports below preserve the prior ``from
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superset.versioning.baseline import …`` call shape; no caller outside
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this package needs to change.
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"""
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from __future__ import annotations
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from superset.versioning.baseline.collection import (
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child_to_parent_registry,
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VERSIONED_MODELS,
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)
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from superset.versioning.baseline.dirty import pin_audit_columns
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from superset.versioning.baseline.listener import register_baseline_listener
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from superset.versioning.baseline.shadow import (
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CONTINUUM_BOOKKEEPING_COLUMNS,
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insert_baseline_shadow_row,
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)
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__all__ = [
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"CONTINUUM_BOOKKEEPING_COLUMNS",
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"VERSIONED_MODELS",
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"child_to_parent_registry",
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"insert_baseline_shadow_row",
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"pin_audit_columns",
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"register_baseline_listener",
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]
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