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Code Issues Releases Wiki Activity

Introduce delete markers for deleted tiddlers

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This commit is contained in:
Jeremy Ruston 2024-03-17 14:18:47 +00:00
parent 69cc45bf5c
commit dea739ff07
2 changed files with 33 additions and 15 deletions
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46
plugins/tiddlywiki/multiwikiserver/modules/store/sql-tiddler-database.js
View File

@ -68,6 +68,7 @@ SqlTiddlerDatabase.prototype.createTables = function() {
tiddler_id INTEGER PRIMARY KEY AUTOINCREMENT,
bag_id INTEGER NOT NULL,
title TEXT NOT NULL,
is_deleted BOOLEAN NOT NULL,
attachment_blob TEXT, -- null or the name of an attachment blob
FOREIGN KEY (bag_id) REFERENCES bags(bag_id) ON UPDATE CASCADE ON DELETE CASCADE,
UNIQUE (bag_id, title)
@ -178,10 +179,11 @@ SqlTiddlerDatabase.prototype.saveBagTiddler = function(tiddlerFields,bagname,att
attachment_blob = attachment_blob || null;
// Update the tiddlers table
var info = this.engine.runStatement(`
INSERT OR REPLACE INTO tiddlers (bag_id, title, attachment_blob)
INSERT OR REPLACE INTO tiddlers (bag_id, title, is_deleted, attachment_blob)
VALUES (
(SELECT bag_id FROM bags WHERE bag_name = $bag_name),
$title,
FALSE,
$attachment_blob
)
`,{
@ -251,7 +253,7 @@ SqlTiddlerDatabase.prototype.saveRecipeTiddler = function(tiddlerFields,recipena
};
SqlTiddlerDatabase.prototype.deleteTiddler = function(title,bagname) {
// Run the queries
// Delete the fields of this tiddler
this.engine.runStatement(`
DELETE FROM fields
WHERE tiddler_id IN (
@ -264,13 +266,15 @@ SqlTiddlerDatabase.prototype.deleteTiddler = function(title,bagname) {
$title: title,
$bag_name: bagname
});
// Mark the tiddler itself as deleted
this.engine.runStatement(`
DELETE FROM tiddlers
WHERE bag_id = (
SELECT bag_id
FROM bags
WHERE bag_name = $bag_name
) AND title = $title
INSERT OR REPLACE INTO tiddlers (bag_id, title, is_deleted, attachment_blob)
VALUES (
(SELECT bag_id FROM bags WHERE bag_name = $bag_name),
$title,
TRUE,
NULL
)
`,{
$title: title,
$bag_name: bagname
@ -285,7 +289,7 @@ SqlTiddlerDatabase.prototype.getBagTiddler = function(title,bagname) {
SELECT t.tiddler_id, t.attachment_blob
FROM bags AS b
INNER JOIN tiddlers AS t ON b.bag_id = t.bag_id
WHERE t.title = $title AND b.bag_name = $bag_name
WHERE t.title = $title AND b.bag_name = $bag_name AND t.is_deleted = FALSE
`,{
$title: title,
$bag_name: bagname
@ -326,6 +330,7 @@ SqlTiddlerDatabase.prototype.getRecipeTiddler = function(title,recipename) {
INNER JOIN tiddlers AS t ON b.bag_id = t.bag_id
WHERE r.recipe_name = $recipe_name
AND t.title = $title
AND t.is_deleted = FALSE
ORDER BY rb.position DESC
LIMIT 1
`,{
@ -366,6 +371,7 @@ SqlTiddlerDatabase.prototype.getBagTiddlers = function(bagname) {
FROM bags
WHERE bag_name = $bag_name
)
AND tiddlers.is_deleted = FALSE
ORDER BY title ASC
`,{
$bag_name: bagname
@ -394,6 +400,7 @@ SqlTiddlerDatabase.prototype.getRecipeTiddlers = function(recipename) {
INNER JOIN recipes AS r ON rb.recipe_id = r.recipe_id
INNER JOIN tiddlers AS t ON b.bag_id = t.bag_id
WHERE r.recipe_name = $recipe_name
AND t.is_deleted = FALSE
GROUP BY t.title
ORDER BY t.title
)
@ -404,16 +411,27 @@ SqlTiddlerDatabase.prototype.getRecipeTiddlers = function(recipename) {
};
SqlTiddlerDatabase.prototype.deleteAllTiddlersInBag = function(bagname) {
// Delete the fields
this.engine.runStatement(`
DELETE FROM tiddlers
WHERE bag_id IN (
SELECT bag_id
FROM bags
WHERE bag_name = $bag_name
DELETE FROM fields
WHERE tiddler_id IN (
SELECT tiddler_id
FROM tiddlers
WHERE bag_id = (SELECT bag_id FROM bags WHERE bag_name = $bag_name)
AND is_deleted = FALSE
)
`,{
$bag_name: bagname
});
// Mark the tiddlers as deleted
this.engine.runStatement(`
UPDATE tiddlers
SET is_deleted = TRUE
WHERE bag_id = (SELECT bag_id FROM bags WHERE bag_name = $bag_name)
AND is_deleted = FALSE
`,{
$bag_name: bagname
});
};
/*

2
plugins/tiddlywiki/multiwikiserver/modules/store/tests-sql-tiddler-database.js
View File

@ -102,7 +102,7 @@ function runSqlDatabaseTests(engine) {
expect(sqlTiddlerDatabase.getRecipeTiddlers("recipe-rho")).toEqual([ { title: 'Hello There', bag_name: 'bag-alpha' } ]);
expect(sqlTiddlerDatabase.getRecipeTiddlers("recipe-sigma")).toEqual([ { title: 'Hello There', bag_name: 'bag-gamma' } ]);
// Save a recipe tiddler
expect(sqlTiddlerDatabase.saveRecipeTiddler({title: "More", text: "None"},"recipe-rho")).toEqual({tiddler_id: 5, bag_name: 'bag-beta'});
expect(sqlTiddlerDatabase.saveRecipeTiddler({title: "More", text: "None"},"recipe-rho")).toEqual({tiddler_id: 7, bag_name: 'bag-beta'});
expect(sqlTiddlerDatabase.getRecipeTiddler("More","recipe-rho").tiddler).toEqual({title: "More", text: "None"});
});
}