/* wc-checks.sql -- trigger-based checks for the wc-metadata database.
* This is intended for use with SQLite 3
*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
*/
-- STMT_VERIFICATION_TRIGGERS
/* ------------------------------------------------------------------------- */
CREATE TEMPORARY TRIGGER no_repository_updates BEFORE UPDATE ON repository
BEGIN
SELECT RAISE(FAIL, 'Updates to REPOSITORY are not allowed.');
END;
/* ------------------------------------------------------------------------- */
/* Verify: on every NODES row: parent_relpath is parent of local_relpath */
CREATE TEMPORARY TRIGGER validation_01 BEFORE INSERT ON nodes
WHEN NOT ((new.local_relpath = '' AND new.parent_relpath IS NULL)
OR (relpath_depth(new.local_relpath)
= relpath_depth(new.parent_relpath) + 1))
BEGIN
SELECT RAISE(FAIL, 'WC DB validity check 01 failed');
END;
/* Verify: on every NODES row: its op-depth <= its own depth */
CREATE TEMPORARY TRIGGER validation_02 BEFORE INSERT ON nodes
WHEN NOT new.op_depth <= relpath_depth(new.local_relpath)
BEGIN
SELECT RAISE(FAIL, 'WC DB validity check 02 failed');
END;
/* Verify: on every NODES row: it is an op-root or it has a parent with the
sames op-depth. (Except when the node is a file external) */
CREATE TEMPORARY TRIGGER validation_03 BEFORE INSERT ON nodes
WHEN NOT (
(new.op_depth = relpath_depth(new.local_relpath))
OR
(EXISTS (SELECT 1 FROM nodes
WHERE wc_id = new.wc_id AND op_depth = new.op_depth
AND local_relpath = new.parent_relpath))
)
AND NOT (new.file_external IS NOT NULL AND new.op_depth = 0)
BEGIN
SELECT RAISE(FAIL, 'WC DB validity check 03 failed');
END;
/* Verify: on every ACTUAL row (except root): a NODES row exists at its
* parent path. */
CREATE TEMPORARY TRIGGER validation_04 BEFORE INSERT ON actual_node
WHEN NOT (new.local_relpath = ''
OR EXISTS (SELECT 1 FROM nodes
WHERE wc_id = new.wc_id
AND local_relpath = new.parent_relpath))
BEGIN
SELECT RAISE(FAIL, 'WC DB validity check 04 failed');
END;