memories/lib/Db/TimelineQueryCTE.php

110 lines
3.3 KiB
PHP

<?php
declare(strict_types=1);
namespace OCA\Memories\Db;
trait TimelineQueryCTE
{
/**
* CTE to get all files recursively in the given top folders
* :topFolderIds - The top folders to get files from.
*
* @param bool $hidden Whether to include files in hidden folders
* If the top folder is hidden, the files in it will still be returned
* Hidden files are marked as such in the "hidden" field
*/
protected static function CTE_FOLDERS_ALL(bool $hidden): string
{
// Filter out folder MIME types
$FOLDER_MIME_QUERY = "SELECT MAX(id) FROM *PREFIX*mimetypes WHERE mimetype = 'httpd/unix-directory'";
// Select 1 if there is a .nomedia file in the folder
$SEL_NOMEDIA = "SELECT 1 FROM *PREFIX*filecache f2
WHERE (f2.parent = f.fileid)
AND (f2.name = '.nomedia' OR f2.name = '.nomemories')";
// Check no nomedia file exists in the folder
$CLS_NOMEDIA = "NOT EXISTS ({$SEL_NOMEDIA})";
// Whether to filter out hidden folders
$CLS_HIDDEN_JOIN = $hidden ? '1 = 1' : "f.name NOT LIKE '.%'";
return
"*PREFIX*cte_folders_all(fileid, name, hidden) AS (
SELECT f.fileid, f.name,
(0) AS hidden
FROM *PREFIX*filecache f
WHERE (
f.fileid IN (:topFolderIds) AND
{$CLS_NOMEDIA}
)
UNION ALL
SELECT f.fileid, f.name,
(CASE WHEN c.hidden = 1 OR f.name LIKE '.%' THEN 1 ELSE 0 END) AS hidden
FROM *PREFIX*filecache f
INNER JOIN *PREFIX*cte_folders_all c
ON (
f.parent = c.fileid AND
f.mimetype = ({$FOLDER_MIME_QUERY}) AND
({$CLS_HIDDEN_JOIN})
)
WHERE (
{$CLS_NOMEDIA}
)
)";
}
/**
* CTE to get all folders recursively in the given top folders.
*
* @param bool $hidden Whether to include files in hidden folders
*/
protected static function CTE_FOLDERS(bool $hidden): string
{
$CLS_HIDDEN = $hidden ? 'MIN(hidden)' : '0';
$cte = "*PREFIX*cte_folders AS (
SELECT
fileid, ({$CLS_HIDDEN}) AS hidden
FROM
*PREFIX*cte_folders_all
GROUP BY
fileid
)";
return self::bundleCTEs([self::CTE_FOLDERS_ALL($hidden), $cte]);
}
/** CTE to get all archive folders recursively in the given top folders */
protected static function CTE_FOLDERS_ARCHIVE(): string
{
$cte = "*PREFIX*cte_folders(fileid) AS (
SELECT
cfa.fileid
FROM
*PREFIX*cte_folders_all cfa
WHERE
cfa.name = '.archive'
GROUP BY
cfa.fileid
UNION ALL
SELECT
f.fileid
FROM
*PREFIX*filecache f
INNER JOIN *PREFIX*cte_folders c
ON (f.parent = c.fileid)
)";
return self::bundleCTEs([self::CTE_FOLDERS_ALL(true), $cte]);
}
protected static function bundleCTEs(array $ctes): string
{
return 'WITH RECURSIVE '.implode(',', $ctes);
}
}