1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
<?php
/**
* Nextcloud - News
*
* This file is licensed under the Affero General Public License version 3 or
* later. See the COPYING file.
*
* @author Alessandro Cosentino <cosenal@gmail.com>
* @author Bernhard Posselt <dev@bernhard-posselt.com>
* @copyright 2020 Sean Molenaar
*/
namespace OCA\News\Db;
use Doctrine\DBAL\FetchMode;
use OCA\News\Utility\Time;
use OCP\AppFramework\Db\DoesNotExistException;
use OCP\AppFramework\Db\Entity;
use OCP\AppFramework\Db\MultipleObjectsReturnedException;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\IDBConnection;
/**
* Class ItemMapper
*
* @package OCA\News\Db
*/
class ItemMapperV2 extends NewsMapperV2
{
const TABLE_NAME = 'news_items';
/**
* ItemMapper constructor.
*
* @param IDBConnection $db
* @param Time $time
*/
public function __construct(IDBConnection $db, Time $time)
{
parent::__construct($db, $time, Item::class);
}
/**
* Find all feeds for a user.
*
* @param string $userId The user identifier
* @param array $params Filter parameters
*
* @return Entity[]
*/
public function findAllFromUser(string $userId, array $params = []): array
{
$builder = $this->db->getQueryBuilder();
$builder->select('items.*')
->from($this->tableName, 'items')
->innerJoin('items', FeedMapperV2::TABLE_NAME, 'feeds', 'items.feed_id = feeds.id')
->where('feeds.user_id = :user_id')
->andWhere('deleted_at = 0')
->setParameter('user_id', $userId, IQueryBuilder::PARAM_STR);
foreach ($params as $key => $value) {
$builder->andWhere("${key} = :${key}")
->setParameter($key, $value);
}
return $this->findEntities($builder);
}
/**
* Find all items
*
* @return Entity[]
*/
public function findAll(): array
{
$builder = $this->db->getQueryBuilder();
$builder->addSelect('*')
->from($this->tableName)
->andWhere('deleted_at = 0');
return $this->findEntities($builder);
}
public function findFromUser(string $userId, int $id): Entity
{
$builder = $this->db->getQueryBuilder();
$builder->select('items.*')
->from($this->tableName, 'items')
->innerJoin('items', FeedMapperV2::TABLE_NAME, 'feeds', 'items.feed_id = feeds.id')
->where('feeds.user_id = :user_id')
->andWhere('items.id = :item_id')
->andWhere('deleted_at = 0')
->setParameter('user_id', $userId, IQueryBuilder::PARAM_STR)
->setParameter('item_id', $id, IQueryBuilder::PARAM_STR);
return $this->findEntity($builder);
}
/**
* Find an item by a GUID hash.
*
* @param int $feedId ID of the feed
* @param string $guidHash hash to find with
*
* @return Item
*
* @throws DoesNotExistException
* @throws MultipleObjectsReturnedException
*/
public function findByGuidHash(int $feedId, string $guidHash): Item
{
$builder = $this->db->getQueryBuilder();
$builder->addSelect('*')
->from($this->tableName)
->andWhere('feed_id = :feed_id')
->andWhere('guid_hash = :guid_hash')
->setParameter('feed_id', $feedId, IQueryBuilder::PARAM_INT)
->setParameter('guid_hash', $guidHash, IQueryBuilder::PARAM_STR);
return $this->findEntity($builder);
}
/**
* @param int $feedId
*
* @return array
*/
public function findAllForFeed(int $feedId): array
{
$builder = $this->db->getQueryBuilder();
$builder->addSelect('*')
->from($this->tableName)
->andWhere('feed_id = :feed_id')
->setParameter('feed_id', $feedId, IQueryBuilder::PARAM_INT);
return $this->findEntities($builder);
}
/**
* Delete items from feed that are over the max item threshold
*
* @param int $threshold Deletion threshold
* @param bool $removeUnread If unread articles should be removed
*
* @return int|null Removed items
*
* @throws \Doctrine\DBAL\Exception|\OCP\DB\Exception
*/
public function deleteOverThreshold(int $threshold, bool $removeUnread = false): ?int
{
$feedQb = $this->db->getQueryBuilder();
$feedQb->select('feed_id', $feedQb->func()->count('*', 'itemCount'))
->selectAlias($feedQb->func()->max('feeds.articles_per_update'), 'articlesPerUpdate')
->from($this->tableName, 'items')
->innerJoin('items', FeedMapperV2::TABLE_NAME, 'feeds', 'items.feed_id = feeds.id')
->groupBy('feed_id');
$feeds = $this->db->executeQuery($feedQb->getSQL())
->fetchAll(FetchMode::ASSOCIATIVE);
if ($feeds === []) {
return null;
}
$rangeQuery = $this->db->getQueryBuilder();
$rangeQuery->select('id')
->from($this->tableName)
->where('feed_id = :feedId')
->andWhere('starred = false')
->orderBy('updated_date', 'DESC');
if ($removeUnread === false) {
$rangeQuery->andWhere('unread = false');
}
$total_items = [];
foreach ($feeds as $feed) {
if ($feed['itemCount'] < $threshold) {
continue;
}
$rangeQuery->setFirstResult(max($threshold, $feed['articlesPerUpdate']));
$items = $this->db->executeQuery($rangeQuery->getSQL(), ['feedId' => $feed['feed_id']])
->fetchAll(FetchMode::COLUMN);
$total_items = array_merge($total_items, $items);
}
$deleteQb = $this->db->getQueryBuilder();
$deleteQb->delete($this->tableName)
->where('id IN (?)');
$affected_rows = 0;
// split $total_items into multiple chunks because of the parameter limit
foreach (array_chunk($total_items, NewsMapperV2::PDO_PARAMS_LIMIT) as $items_chunk) {
$affected_rows += $this->db->executeUpdate(
$deleteQb->getSQL(),
[$items_chunk],
[IQueryBuilder::PARAM_INT_ARRAY]
);
}
return $affected_rows;
}
/**
* No-op clear deleted items.
*
* @param string|null $userID
* @param int|null $oldestDelete
*/
public function purgeDeleted(?string $userID, ?int $oldestDelete): void
{
//NO-OP
}
}
|
