BaseMapper::count() - Code Metrics - Inspection of "Fix "No search results" briefly showing up during..." - owncloud/music - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 6b69e2...10553e )

by Pauli

created 2021-09-29 20:42 UTC

BaseMapper::count() A

↳ Parent: BaseMapper

Complexity

Conditions	1
Paths	1

Size

Total Lines	5
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	1
eloc	4
nc	1
nop	1
dl	0
loc	5
rs	10
c	0
b	0
f	0

<?php declare(strict_types=1);

/**
 * ownCloud - Music app
 *
 * This file is licensed under the Affero General Public License version 3 or
 * later. See the COPYING file.
 *
 * @author Pauli Järvinen <[email protected]>
 * @copyright Pauli Järvinen 2016 - 2021
 */

namespace OCA\Music\Db;

use \OCP\AppFramework\Db\DoesNotExistException;
use \OCP\AppFramework\Db\Mapper;
use \OCP\AppFramework\Db\MultipleObjectsReturnedException;
use \OCP\IDBConnection;

use \OCA\Music\AppFramework\Db\UniqueConstraintViolationException;
use \OCA\Music\Utility\Util;

/**
 * Common base class for data access classes of the Music app
 * @phpstan-template EntityType of Entity
 * @phpstan-method EntityType findEntity(string $sql, array $params)
 * @phpstan-method EntityType[] findEntities(string $sql, array $params, ?int $limit=null, ?int $offset=null)
 */
abstract class BaseMapper extends Mapper {
	const SQL_DATE_FORMAT = 'Y-m-d H:i:s.v';

	protected $nameColumn;
	/** @phpstan-var class-string<EntityType> $entityClass */
	protected $entityClass;

	/**
	 * @phpstan-param class-string<EntityType> $entityClass
	 */
	public function __construct(IDBConnection $db, string $tableName, string $entityClass, string $nameColumn) {
		parent::__construct($db, $tableName, $entityClass);
		$this->nameColumn = $nameColumn;
		// eclipse the base class property to help phpstan
		$this->entityClass = $entityClass;
	}

	/**
	 * Create an empty object of the entity class bound to this mapper
	 * @phpstan-return EntityType
	 */
	public function createEntity() : Entity {
		return new $this->entityClass();
	}

	/**
	 * Find a single entity by id and user_id
	 * @throws DoesNotExistException if the entity does not exist
	 * @throws MultipleObjectsReturnedException if more than one entity exists
	 * @phpstan-return EntityType
	 */
	public function find(int $id, string $userId) : Entity {
		$sql = $this->selectUserEntities("`{$this->getTableName()}`.`id` = ?");
		return $this->findEntity($sql, [$userId, $id]);

	}

	/**
	 * Find all entities matching the given IDs. Specifying the owning user is optional.
	 * @param integer[] $ids  IDs of the entities to be found
	 * @param string|null $userId
	 * @return Entity[]
	 * @phpstan-return EntityType[]
	 */
	public function findById(array $ids, string $userId=null) : array {
		$count = \count($ids);
		$condition = "`{$this->getTableName()}`.`id` IN ". $this->questionMarks($count);

		if (empty($userId)) {
			$sql = $this->selectEntities($condition);
		} else {
			$sql = $this->selectUserEntities($condition);
			$ids = \array_merge([$userId], $ids);
		}

		return $this->findEntities($sql, $ids);
	}

	/**
	 * Find all user's entities
	 * @param string|null $createdMin Optional minimum `created` timestamp.
	 * @param string|null $createdMax Optional maximum `created` timestamp.
	 * @param string|null $updatedMin Optional minimum `updated` timestamp.
	 * @param string|null $updatedMax Optional maximum `updated` timestamp.
	 * @return Entity[]
	 * @phpstan-return EntityType[]
	 */
	public function findAll(string $userId, int $sortBy=SortBy::None, int $limit=null, int $offset=null,
							?string $createdMin=null, ?string $createdMax=null, ?string $updatedMin=null, ?string $updatedMax=null) : array {
		$sorting = $this->formatSortingClause($sortBy);
		[$condition, $params] = $this->formatTimestampConditions($createdMin, $createdMax, $updatedMin, $updatedMax);
		$sql = $this->selectUserEntities($condition, $sorting);
		\array_unshift($params, $userId);
		return $this->findEntities($sql, $params, $limit, $offset);
	}

	/**
	 * Find all user's entities matching the given name
	 * @param string|null $createdMin Optional minimum `created` timestamp.
	 * @param string|null $createdMax Optional maximum `created` timestamp.
	 * @param string|null $updatedMin Optional minimum `updated` timestamp.
	 * @param string|null $updatedMax Optional maximum `updated` timestamp.
	 * @return Entity[]
	 * @phpstan-return EntityType[]
	 */
	public function findAllByName(
		?string $name, string $userId, bool $fuzzy=false, int $limit=null, int $offset=null,
		?string $createdMin=null, ?string $createdMax=null, ?string $updatedMin=null, ?string $updatedMax=null) : array {

		$nameCol = "`{$this->getTableName()}`.`{$this->nameColumn}`";
		if ($name === null) {
			$condition = "$nameCol IS NULL";
			$params = [$userId];
		} elseif ($fuzzy) {
			$condition = "LOWER($nameCol) LIKE LOWER(?)";
			$params = [$userId, self::prepareFuzzySearchString($name)];
		} else {
			$condition = "LOWER($nameCol) = LOWER(?)";
			$params = [$userId, $name];
		}

		[$timestampConds, $timestampParams] = $this->formatTimestampConditions($createdMin, $createdMax, $updatedMin, $updatedMax);
		if (!empty($timestampConds)) {
			$condition .= ' AND ' . $timestampConds;
			$params = \array_merge($params, $timestampParams);
		}

		$sql = $this->selectUserEntities($condition, "ORDER BY LOWER($nameCol)");

		return $this->findEntities($sql, $params, $limit, $offset);
	}

	/**
	 * Find all user's starred entities
	 * @return Entity[]
	 * @phpstan-return EntityType[]
	 */
	public function findAllStarred(string $userId, int $limit=null, int $offset=null) : array {
		$sql = $this->selectUserEntities(
				"`{$this->getTableName()}`.`starred` IS NOT NULL",
				"ORDER BY LOWER(`{$this->getTableName()}`.`{$this->nameColumn}`)");
		return $this->findEntities($sql, [$userId], $limit, $offset);
	}

	/**
	 * Find IDs of all user's entities of this kind
	 * @return int[]
	 */
	public function findAllIds(string $userId) : array {
		$sql = "SELECT `id` FROM `{$this->getTableName()}` WHERE `user_id` = ?";
		$result = $this->execute($sql, [$userId]);

		return \array_map('intval', $result->fetchAll(\PDO::FETCH_COLUMN));
	}

	/**
	 * Find IDs of all users owning any entities of this mapper
	 * @return string[]
	 */
	public function findAllUsers() : array {
		$sql = "SELECT DISTINCT(`user_id`) FROM `{$this->getTableName()}`";
		$result = $this->execute($sql);

		return $result->fetchAll(\PDO::FETCH_COLUMN);
	}

	/**
	 * Delete all entities with given IDs without specifying the user
	 * @param integer[] $ids  IDs of the entities to be deleted
	 */
	public function deleteById(array $ids) : void {
		$count = \count($ids);
		if ($count === 0) {
			return;
		}
		$this->deleteByCond('`id` IN ' . $this->questionMarks($count), $ids);
	}

	/**
	 * Delete all entities matching the given SQL condition
	 * @param string $condition SQL 'WHERE' condition (without the keyword 'WHERE')
	 * @param array $params SQL parameters for the condition
	 */
	protected function deleteByCond(string $condition, array $params) : void {
		$sql = "DELETE FROM `{$this->getTableName()}` WHERE ". $condition;
		$this->execute($sql, $params);
	}

	/**
	 * Delete all entities of the given user
	 */
	public function deleteAll(string $userId) : void {
		$sql = "DELETE FROM `{$this->getTableName()}` WHERE `user_id` = ?";
		$this->execute($sql, [$userId]);
	}

	/**
	 * Tests if entity with given ID and user ID exists in the database
	 */
	public function exists(int $id, string $userId) : bool {
		$sql = "SELECT 1 FROM `{$this->getTableName()}` WHERE `id` = ? AND `user_id` = ?";
		$result = $this->execute($sql, [$id, $userId]);
		return $result->rowCount() > 0;
	}

	/**
	 * Count all entities of a user
	 */
	public function count(string $userId) : int {
		$sql = "SELECT COUNT(*) AS count FROM `{$this->getTableName()}` WHERE `user_id` = ?";
		$result = $this->execute($sql, [$userId]);
		$row = $result->fetch();
		return \intval($row['count']);
	}

	/**
	 * {@inheritDoc}
	 * @see \OCP\AppFramework\Db\Mapper::insert()
	 * @phpstan-param EntityType $entity
	 * @phpstan-return EntityType
	 */
	public function insert(\OCP\AppFramework\Db\Entity $entity) : \OCP\AppFramework\Db\Entity {
		$now = new \DateTime();
		$nowStr = $now->format(self::SQL_DATE_FORMAT);
		$entity->setCreated($nowStr);
		$entity->setUpdated($nowStr);

		try {
			return parent::insert($entity); // @phpstan-ignore-line: no way to tell phpstan that the parent uses the template type
		} catch (\Doctrine\DBAL\Exception\UniqueConstraintViolationException $e) {
			throw new UniqueConstraintViolationException($e->getMessage(), $e->getCode(), $e);
		} catch (\OCP\DB\Exception $e) {
filter:
    dependency_paths: ["lib/*"]
			// Nextcloud 21+
			if ($e->getReason() == \OCP\DB\Exception::REASON_UNIQUE_CONSTRAINT_VIOLATION) {
				throw new UniqueConstraintViolationException($e->getMessage(), $e->getCode(), $e);
			} else {
				throw $e;
			}
		}
	}

	/**
	 * {@inheritDoc}
	 * @see \OCP\AppFramework\Db\Mapper::update()
	 * @phpstan-param EntityType $entity
	 * @phpstan-return EntityType
	 */
	public function update(\OCP\AppFramework\Db\Entity $entity) : \OCP\AppFramework\Db\Entity {
		$now = new \DateTime();
		$entity->setUpdated($now->format(self::SQL_DATE_FORMAT));
		return parent::update($entity); // @phpstan-ignore-line: no way to tell phpstan that the parent uses the template type
	}

	/**
	 * Insert an entity, or if an entity with the same identity already exists,
	 * update the existing entity.
	 * Note: The functions insertOrUpate and updateOrInsert get the exactly same thing done. The only difference is
	 * that the former is optimized for cases where the entity doens't exist and the latter for cases where it does exist.
	 * @return Entity The inserted or updated entity, containing also the id field
	 * @phpstan-param EntityType $entity
	 * @phpstan-return EntityType
	 */
	public function insertOrUpdate(Entity $entity) : Entity {
		try {
			return $this->insert($entity);
		} catch (UniqueConstraintViolationException $ex) {
			$existingEntity = $this->findUniqueEntity($entity);
			$entity->setId($existingEntity->getId());
			$entity->setCreated($existingEntity->getCreated());
			return $this->update($entity);
		}
	}

	/**
	 * Update an entity whose unique constraint fields match the given entity. If such entity is not found,
	 * a new entity is inserted.
	 * Note: The functions insertOrUpate and updateOrInsert get the exactly same thing done. The only difference is
	 * that the former is optimized for cases where the entity doens't exist and the latter for cases where it does exist.
	 * @return Entity The inserted or updated entity, containing also the id field
	 * @phpstan-param EntityType $entity
	 * @phpstan-return EntityType
	 */
	public function updateOrInsert(Entity $entity) : Entity {
		try {
			$existingEntity = $this->findUniqueEntity($entity);
			$entity->setId($existingEntity->getId());
			return $this->update($entity);
		} catch (DoesNotExistException $ex) {
			try {
				return $this->insert($entity);
			} catch (UniqueConstraintViolationException $ex) {
				// the conflicting entry didn't exist an eyeblink ago but now it does
				// => this is essentially a concurrent update and it is anyway non-deterministic, which
				//    update happens last; cancel this update
				return $this->findUniqueEntity($entity);
			}
		}
	}

	/**
	 * Set the "starred" column of the given entities
	 * @param \DateTime|null $date
	 * @param integer[] $ids
	 * @param string $userId
	 * @return int number of modified entities
	 */
	public function setStarredDate(?\DateTime $date, array $ids, string $userId) : int {
		$count = \count($ids);
		if (!empty($date)) {
			$date = $date->format(self::SQL_DATE_FORMAT);
		}

		$sql = "UPDATE `{$this->getTableName()}` SET `starred` = ?
				WHERE `id` IN {$this->questionMarks($count)} AND `user_id` = ?";
		$params = \array_merge([$date], $ids, [$userId]);
		return $this->execute($sql, $params)->rowCount();
	}

	public function latestInsertTime(string $userId) : ?\DateTime {
		$sql = "SELECT MAX(`{$this->getTableName()}`.`created`) FROM `{$this->getTableName()}` WHERE `user_id` = ?";
		$result = $this->execute($sql, [$userId]);
		$createdTime = $result->fetch(\PDO::FETCH_COLUMN);

		return ($createdTime === null) ? null : new \DateTime($createdTime);
	}

	public function latestUpdateTime(string $userId) : ?\DateTime {
		$sql = "SELECT MAX(`{$this->getTableName()}`.`updated`) FROM `{$this->getTableName()}` WHERE `user_id` = ?";
		$result = $this->execute($sql, [$userId]);
		$createdTime = $result->fetch(\PDO::FETCH_COLUMN);

		return ($createdTime === null) ? null : new \DateTime($createdTime);
	}

	/**
	 * helper creating a string like '(?,?,?)' with the specified number of elements
	 */
	protected function questionMarks(int $count) : string {
		$questionMarks = [];
		for ($i = 0; $i < $count; $i++) {
			$questionMarks[] = '?';
		}
		return '(' . \implode(',', $questionMarks) . ')';
	}

	/**
	 * Build a SQL SELECT statement which selects all entities of the given user,
	 * and optionally applies other conditions, too.
	 * This is built upon `selectEntities` which may be overridden by the derived class.
	 * @param string|null $condition Optional extra condition. This will get automatically
	 *                               prefixed with ' AND ', so don't include that.
	 * @param string|null $extension Any extension (e.g. ORDER BY, LIMIT) to be added after
	 *                               the conditions in the SQL statement
	 */
	protected function selectUserEntities(string $condition=null, string $extension=null) : string {
		$allConditions = "`{$this->getTableName()}`.`user_id` = ?";

		if (!empty($condition)) {
			$allConditions .= " AND $condition";
		}

		return $this->selectEntities($allConditions, $extension);
	}

	/**
	 * Build a SQL SELECT statement which selects all entities matching the given condition.
	 * The derived class may override this if necessary.
	 * @param string $condition This will get automatically prefixed with ' WHERE '
	 * @param string|null $extension Any extension (e.g. ORDER BY, LIMIT) to be added after
	 *                               the conditions in the SQL statement
	 */
	protected function selectEntities(string $condition, string $extension=null) : string {
		return "SELECT * FROM `{$this->getTableName()}` WHERE $condition $extension ";
	}

	/**
	 * @return array with two values: The SQL condition as string and the SQL parameters as string[]
	 */
	protected function formatTimestampConditions(?string $createdMin, ?string $createdMax, ?string $updatedMin, ?string $updatedMax) : array {
		$conditions = [];
		$params = [];

		if (!empty($createdMin)) {
			$conditions[] = "`{$this->getTableName()}`.`created` >= ?";
			$params[] = $createdMin;
		}

		if (!empty($createdMax)) {
			$conditions[] = "`{$this->getTableName()}`.`created` <= ?";
			$params[] = $createdMax;
		}

		if (!empty($updatedMin)) {
			$conditions[] = "`{$this->getTableName()}`.`updated` >= ?";
			$params[] = $updatedMin;
		}

		if (!empty($updatedMax)) {
			$conditions[] = "`{$this->getTableName()}`.`updated` <= ?";
			$params[] = $updatedMax;
		}

		return [\implode(' AND ', $conditions), $params];
	}

	/**
	 * Convert given sorting condition to an SQL clause. Derived class may overide this if necessary.
	 * @param int $sortBy One of the constants defined in the class SortBy
	 */
	protected function formatSortingClause(int $sortBy) : ?string {
		if ($sortBy == SortBy::Name) {
			return "ORDER BY LOWER(`{$this->getTableName()}`.`{$this->nameColumn}`)";
		} elseif ($sortBy == SortBy::Newest) {
			return "ORDER BY `{$this->getTableName()}`.`id` DESC"; // abuse the fact that IDs are ever-incrementing values
		} else {
			return null;
		}
	}

	protected static function prepareFuzzySearchString(string $input) : string {
		// possibly multiparted query enclosed in quotation marks is handled as a single substing,
		// while the default interpretation of multipart string is that each of the parts can be found
		// separately as substing in the given order
		if (Util::startsWith($input, '"') && Util::endsWith($input, '"')) {
			// remove the quotation
			$pattern = \substr($input, 1, -1);
		} else {
			// split to parts by whitespace
			$parts = \preg_split('/\s+/', $input, -1, PREG_SPLIT_NO_EMPTY);
			// glue the parts back together with a wildcard charater
			$pattern = \implode('%', $parts);
		}
		return "%$pattern%";
	}

	/**
	 * Find an entity which has the same identity as the supplied entity.
	 * How the identity of the entity is defined, depends on the derived concrete class.
	 * @phpstan-param EntityType $entity
	 * @phpstan-return EntityType
	 */
	abstract protected function findUniqueEntity(Entity $entity) : Entity;
}


1			<?php declare(strict_types=1);
2
3			/**
4			* ownCloud - Music app
5			*
6			* This file is licensed under the Affero General Public License version 3 or
7			* later. See the COPYING file.
8			*
9			* @author Pauli Järvinen <[email protected]>
10			* @copyright Pauli Järvinen 2016 - 2021
11			*/
12
13			namespace OCA\Music\Db;
14
15			use \OCP\AppFramework\Db\DoesNotExistException;
16			use \OCP\AppFramework\Db\Mapper;
17			use \OCP\AppFramework\Db\MultipleObjectsReturnedException;
18			use \OCP\IDBConnection;
19
20			use \OCA\Music\AppFramework\Db\UniqueConstraintViolationException;
21			use \OCA\Music\Utility\Util;
22
23			/**
24			* Common base class for data access classes of the Music app
25			* @phpstan-template EntityType of Entity
26			* @phpstan-method EntityType findEntity(string $sql, array $params)
27			* @phpstan-method EntityType[] findEntities(string $sql, array $params, ?int $limit=null, ?int $offset=null)
28			*/
29			abstract class BaseMapper extends Mapper {
30			const SQL_DATE_FORMAT = 'Y-m-d H:i:s.v';
31
32			protected $nameColumn;
33			/** @phpstan-var class-string<EntityType> $entityClass */
34			protected $entityClass;
35
36			/**
37			* @phpstan-param class-string<EntityType> $entityClass
38			*/
39			public function __construct(IDBConnection $db, string $tableName, string $entityClass, string $nameColumn) {
40			parent::__construct($db, $tableName, $entityClass);
41			$this->nameColumn = $nameColumn;
42			// eclipse the base class property to help phpstan
43			$this->entityClass = $entityClass;
44			}
45
46			/**
47			* Create an empty object of the entity class bound to this mapper
48			* @phpstan-return EntityType
49			*/
50			public function createEntity() : Entity {
51			return new $this->entityClass();
52			}
53
54			/**
55			* Find a single entity by id and user_id
56			* @throws DoesNotExistException if the entity does not exist
57			* @throws MultipleObjectsReturnedException if more than one entity exists
58			* @phpstan-return EntityType
59			*/
60			public function find(int $id, string $userId) : Entity {
61			$sql = $this->selectUserEntities("`{$this->getTableName()}`.`id` = ?");
62			return $this->findEntity($sql, [$userId, $id]);
			0 ignored issues – show Bug Best Practice introduced 2021-09-28 18:50 UTC by Report Bug Copy Issue Report The expression `return $this->findEntity...l, array($userId, $id))` returns the type `OCP\AppFramework\Db\Entity` which includes types incompatible with the type-hinted return `OCA\Music\Db\Entity`. Loading history...
63			}
64
65			/**
66			* Find all entities matching the given IDs. Specifying the owning user is optional.
67			* @param integer[] $ids IDs of the entities to be found
68			* @param string\|null $userId
69			* @return Entity[]
70			* @phpstan-return EntityType[]
71			*/
72			public function findById(array $ids, string $userId=null) : array {
73			$count = \count($ids);
74			$condition = "`{$this->getTableName()}`.`id` IN ". $this->questionMarks($count);
75
76			if (empty($userId)) {
77			$sql = $this->selectEntities($condition);
78			} else {
79			$sql = $this->selectUserEntities($condition);
80			$ids = \array_merge([$userId], $ids);
81			}
82
83			return $this->findEntities($sql, $ids);
84			}
85
86			/**
87			* Find all user's entities
88			* @param string\|null $createdMin Optional minimum `created` timestamp.
89			* @param string\|null $createdMax Optional maximum `created` timestamp.
90			* @param string\|null $updatedMin Optional minimum `updated` timestamp.
91			* @param string\|null $updatedMax Optional maximum `updated` timestamp.
92			* @return Entity[]
93			* @phpstan-return EntityType[]
94			*/
95			public function findAll(string $userId, int $sortBy=SortBy::None, int $limit=null, int $offset=null,
96			?string $createdMin=null, ?string $createdMax=null, ?string $updatedMin=null, ?string $updatedMax=null) : array {
97			$sorting = $this->formatSortingClause($sortBy);
98			[$condition, $params] = $this->formatTimestampConditions($createdMin, $createdMax, $updatedMin, $updatedMax);
99			$sql = $this->selectUserEntities($condition, $sorting);
100			\array_unshift($params, $userId);
101			return $this->findEntities($sql, $params, $limit, $offset);
102			}
103
104			/**
105			* Find all user's entities matching the given name
106			* @param string\|null $createdMin Optional minimum `created` timestamp.
107			* @param string\|null $createdMax Optional maximum `created` timestamp.
108			* @param string\|null $updatedMin Optional minimum `updated` timestamp.
109			* @param string\|null $updatedMax Optional maximum `updated` timestamp.
110			* @return Entity[]
111			* @phpstan-return EntityType[]
112			*/
113			public function findAllByName(
114			?string $name, string $userId, bool $fuzzy=false, int $limit=null, int $offset=null,
115			?string $createdMin=null, ?string $createdMax=null, ?string $updatedMin=null, ?string $updatedMax=null) : array {
116
117			$nameCol = "`{$this->getTableName()}`.`{$this->nameColumn}`";
118			if ($name === null) {
119			$condition = "$nameCol IS NULL";
120			$params = [$userId];
121			} elseif ($fuzzy) {
122			$condition = "LOWER($nameCol) LIKE LOWER(?)";
123			$params = [$userId, self::prepareFuzzySearchString($name)];
124			} else {
125			$condition = "LOWER($nameCol) = LOWER(?)";
126			$params = [$userId, $name];
127			}
128
129			[$timestampConds, $timestampParams] = $this->formatTimestampConditions($createdMin, $createdMax, $updatedMin, $updatedMax);
130			if (!empty($timestampConds)) {
131			$condition .= ' AND ' . $timestampConds;
132			$params = \array_merge($params, $timestampParams);
133			}
134
135			$sql = $this->selectUserEntities($condition, "ORDER BY LOWER($nameCol)");
136
137			return $this->findEntities($sql, $params, $limit, $offset);
138			}
139
140			/**
141			* Find all user's starred entities
142			* @return Entity[]
143			* @phpstan-return EntityType[]
144			*/
145			public function findAllStarred(string $userId, int $limit=null, int $offset=null) : array {
146			$sql = $this->selectUserEntities(
147			"`{$this->getTableName()}`.`starred` IS NOT NULL",
148			"ORDER BY LOWER(`{$this->getTableName()}`.`{$this->nameColumn}`)");
149			return $this->findEntities($sql, [$userId], $limit, $offset);
150			}
151
152			/**
153			* Find IDs of all user's entities of this kind
154			* @return int[]
155			*/
156			public function findAllIds(string $userId) : array {
157			$sql = "SELECT `id` FROM `{$this->getTableName()}` WHERE `user_id` = ?";
158			$result = $this->execute($sql, [$userId]);
159
160			return \array_map('intval', $result->fetchAll(\PDO::FETCH_COLUMN));
161			}
162
163			/**
164			* Find IDs of all users owning any entities of this mapper
165			* @return string[]
166			*/
167			public function findAllUsers() : array {
168			$sql = "SELECT DISTINCT(`user_id`) FROM `{$this->getTableName()}`";
169			$result = $this->execute($sql);
170
171			return $result->fetchAll(\PDO::FETCH_COLUMN);
172			}
173
174			/**
175			* Delete all entities with given IDs without specifying the user
176			* @param integer[] $ids IDs of the entities to be deleted
177			*/
178			public function deleteById(array $ids) : void {
179			$count = \count($ids);
180			if ($count === 0) {
181			return;
182			}
183			$this->deleteByCond('`id` IN ' . $this->questionMarks($count), $ids);
184			}
185
186			/**
187			* Delete all entities matching the given SQL condition
188			* @param string $condition SQL 'WHERE' condition (without the keyword 'WHERE')
189			* @param array $params SQL parameters for the condition
190			*/
191			protected function deleteByCond(string $condition, array $params) : void {
192			$sql = "DELETE FROM `{$this->getTableName()}` WHERE ". $condition;
193			$this->execute($sql, $params);
194			}
195
196			/**
197			* Delete all entities of the given user
198			*/
199			public function deleteAll(string $userId) : void {
200			$sql = "DELETE FROM `{$this->getTableName()}` WHERE `user_id` = ?";
201			$this->execute($sql, [$userId]);
202			}
203
204			/**
205			* Tests if entity with given ID and user ID exists in the database
206			*/
207			public function exists(int $id, string $userId) : bool {
208			$sql = "SELECT 1 FROM `{$this->getTableName()}` WHERE `id` = ? AND `user_id` = ?";
209			$result = $this->execute($sql, [$id, $userId]);
210			return $result->rowCount() > 0;
211			}
212
213			/**
214			* Count all entities of a user
215			*/
216			public function count(string $userId) : int {
217			$sql = "SELECT COUNT(*) AS count FROM `{$this->getTableName()}` WHERE `user_id` = ?";
218			$result = $this->execute($sql, [$userId]);
219			$row = $result->fetch();
220			return \intval($row['count']);
221			}
222
223			/**
224			* {@inheritDoc}
225			* @see \OCP\AppFramework\Db\Mapper::insert()
226			* @phpstan-param EntityType $entity
227			* @phpstan-return EntityType
228			*/
229			public function insert(\OCP\AppFramework\Db\Entity $entity) : \OCP\AppFramework\Db\Entity {
230			$now = new \DateTime();
231			$nowStr = $now->format(self::SQL_DATE_FORMAT);
232			$entity->setCreated($nowStr);
233			$entity->setUpdated($nowStr);
234
235			try {
236			return parent::insert($entity); // @phpstan-ignore-line: no way to tell phpstan that the parent uses the template type
237			} catch (\Doctrine\DBAL\Exception\UniqueConstraintViolationException $e) {
238			throw new UniqueConstraintViolationException($e->getMessage(), $e->getCode(), $e);
239			} catch (\OCP\DB\Exception $e) {
			0 ignored issues – show Bug introduced 2021-02-27 17:05 UTC by Report Bug Copy Issue Report The type `OCP\DB\Exception` was not found. Maybe you did not declare it correctly or list all dependencies? The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g. `excluded_paths: ["lib/"]`, you can move it to the dependency path list as follows: filter: dependency_paths: ["lib/"] For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths Loading history...
240			// Nextcloud 21+
241			if ($e->getReason() == \OCP\DB\Exception::REASON_UNIQUE_CONSTRAINT_VIOLATION) {
242			throw new UniqueConstraintViolationException($e->getMessage(), $e->getCode(), $e);
243			} else {
244			throw $e;
245			}
246			}
247			}
248
249			/**
250			* {@inheritDoc}
251			* @see \OCP\AppFramework\Db\Mapper::update()
252			* @phpstan-param EntityType $entity
253			* @phpstan-return EntityType
254			*/
255			public function update(\OCP\AppFramework\Db\Entity $entity) : \OCP\AppFramework\Db\Entity {
256			$now = new \DateTime();
257			$entity->setUpdated($now->format(self::SQL_DATE_FORMAT));
258			return parent::update($entity); // @phpstan-ignore-line: no way to tell phpstan that the parent uses the template type
259			}
260
261			/**
262			* Insert an entity, or if an entity with the same identity already exists,
263			* update the existing entity.
264			* Note: The functions insertOrUpate and updateOrInsert get the exactly same thing done. The only difference is
265			* that the former is optimized for cases where the entity doens't exist and the latter for cases where it does exist.
266			* @return Entity The inserted or updated entity, containing also the id field
267			* @phpstan-param EntityType $entity
268			* @phpstan-return EntityType
269			*/
270			public function insertOrUpdate(Entity $entity) : Entity {
271			try {
272			return $this->insert($entity);
273			} catch (UniqueConstraintViolationException $ex) {
274			$existingEntity = $this->findUniqueEntity($entity);
275			$entity->setId($existingEntity->getId());
276			$entity->setCreated($existingEntity->getCreated());
277			return $this->update($entity);
278			}
279			}
280
281			/**
282			* Update an entity whose unique constraint fields match the given entity. If such entity is not found,
283			* a new entity is inserted.
284			* Note: The functions insertOrUpate and updateOrInsert get the exactly same thing done. The only difference is
285			* that the former is optimized for cases where the entity doens't exist and the latter for cases where it does exist.
286			* @return Entity The inserted or updated entity, containing also the id field
287			* @phpstan-param EntityType $entity
288			* @phpstan-return EntityType
289			*/
290			public function updateOrInsert(Entity $entity) : Entity {
291			try {
292			$existingEntity = $this->findUniqueEntity($entity);
293			$entity->setId($existingEntity->getId());
294			return $this->update($entity);
295			} catch (DoesNotExistException $ex) {
296			try {
297			return $this->insert($entity);
298			} catch (UniqueConstraintViolationException $ex) {
299			// the conflicting entry didn't exist an eyeblink ago but now it does
300			// => this is essentially a concurrent update and it is anyway non-deterministic, which
301			// update happens last; cancel this update
302			return $this->findUniqueEntity($entity);
303			}
304			}
305			}
306
307			/**
308			* Set the "starred" column of the given entities
309			* @param \DateTime\|null $date
310			* @param integer[] $ids
311			* @param string $userId
312			* @return int number of modified entities
313			*/
314			public function setStarredDate(?\DateTime $date, array $ids, string $userId) : int {
315			$count = \count($ids);
316			if (!empty($date)) {
317			$date = $date->format(self::SQL_DATE_FORMAT);
318			}
319
320			$sql = "UPDATE `{$this->getTableName()}` SET `starred` = ?
321			WHERE `id` IN {$this->questionMarks($count)} AND `user_id` = ?";
322			$params = \array_merge([$date], $ids, [$userId]);
323			return $this->execute($sql, $params)->rowCount();
324			}
325
326			public function latestInsertTime(string $userId) : ?\DateTime {
327			$sql = "SELECT MAX(`{$this->getTableName()}`.`created`) FROM `{$this->getTableName()}` WHERE `user_id` = ?";
328			$result = $this->execute($sql, [$userId]);
329			$createdTime = $result->fetch(\PDO::FETCH_COLUMN);
330
331			return ($createdTime === null) ? null : new \DateTime($createdTime);
332			}
333
334			public function latestUpdateTime(string $userId) : ?\DateTime {
335			$sql = "SELECT MAX(`{$this->getTableName()}`.`updated`) FROM `{$this->getTableName()}` WHERE `user_id` = ?";
336			$result = $this->execute($sql, [$userId]);
337			$createdTime = $result->fetch(\PDO::FETCH_COLUMN);
338
339			return ($createdTime === null) ? null : new \DateTime($createdTime);
340			}
341
342			/**
343			* helper creating a string like '(?,?,?)' with the specified number of elements
344			*/
345			protected function questionMarks(int $count) : string {
346			$questionMarks = [];
347			for ($i = 0; $i < $count; $i++) {
348			$questionMarks[] = '?';
349			}
350			return '(' . \implode(',', $questionMarks) . ')';
351			}
352
353			/**
354			* Build a SQL SELECT statement which selects all entities of the given user,
355			* and optionally applies other conditions, too.
356			* This is built upon `selectEntities` which may be overridden by the derived class.
357			* @param string\|null $condition Optional extra condition. This will get automatically
358			* prefixed with ' AND ', so don't include that.
359			* @param string\|null $extension Any extension (e.g. ORDER BY, LIMIT) to be added after
360			* the conditions in the SQL statement
361			*/
362			protected function selectUserEntities(string $condition=null, string $extension=null) : string {
363			$allConditions = "`{$this->getTableName()}`.`user_id` = ?";
364
365			if (!empty($condition)) {
366			$allConditions .= " AND $condition";
367			}
368
369			return $this->selectEntities($allConditions, $extension);
370			}
371
372			/**
373			* Build a SQL SELECT statement which selects all entities matching the given condition.
374			* The derived class may override this if necessary.
375			* @param string $condition This will get automatically prefixed with ' WHERE '
376			* @param string\|null $extension Any extension (e.g. ORDER BY, LIMIT) to be added after
377			* the conditions in the SQL statement
378			*/
379			protected function selectEntities(string $condition, string $extension=null) : string {
380			return "SELECT * FROM `{$this->getTableName()}` WHERE $condition $extension ";
381			}
382
383			/**
384			* @return array with two values: The SQL condition as string and the SQL parameters as string[]
385			*/
386			protected function formatTimestampConditions(?string $createdMin, ?string $createdMax, ?string $updatedMin, ?string $updatedMax) : array {
387			$conditions = [];
388			$params = [];
389
390			if (!empty($createdMin)) {
391			$conditions[] = "`{$this->getTableName()}`.`created` >= ?";
392			$params[] = $createdMin;
393			}
394
395			if (!empty($createdMax)) {
396			$conditions[] = "`{$this->getTableName()}`.`created` <= ?";
397			$params[] = $createdMax;
398			}
399
400			if (!empty($updatedMin)) {
401			$conditions[] = "`{$this->getTableName()}`.`updated` >= ?";
402			$params[] = $updatedMin;
403			}
404
405			if (!empty($updatedMax)) {
406			$conditions[] = "`{$this->getTableName()}`.`updated` <= ?";
407			$params[] = $updatedMax;
408			}
409
410			return [\implode(' AND ', $conditions), $params];
411			}
412
413			/**
414			* Convert given sorting condition to an SQL clause. Derived class may overide this if necessary.
415			* @param int $sortBy One of the constants defined in the class SortBy
416			*/
417			protected function formatSortingClause(int $sortBy) : ?string {
418			if ($sortBy == SortBy::Name) {
419			return "ORDER BY LOWER(`{$this->getTableName()}`.`{$this->nameColumn}`)";
420			} elseif ($sortBy == SortBy::Newest) {
421			return "ORDER BY `{$this->getTableName()}`.`id` DESC"; // abuse the fact that IDs are ever-incrementing values
422			} else {
423			return null;
424			}
425			}
426
427			protected static function prepareFuzzySearchString(string $input) : string {
428			// possibly multiparted query enclosed in quotation marks is handled as a single substing,
429			// while the default interpretation of multipart string is that each of the parts can be found
430			// separately as substing in the given order
431			if (Util::startsWith($input, '"') && Util::endsWith($input, '"')) {
432			// remove the quotation
433			$pattern = \substr($input, 1, -1);
434			} else {
435			// split to parts by whitespace
436			$parts = \preg_split('/\s+/', $input, -1, PREG_SPLIT_NO_EMPTY);
437			// glue the parts back together with a wildcard charater
438			$pattern = \implode('%', $parts);
439			}
440			return "%$pattern%";
441			}
442
443			/**
444			* Find an entity which has the same identity as the supplied entity.
445			* How the identity of the entity is defined, depends on the derived concrete class.
446			* @phpstan-param EntityType $entity
447			* @phpstan-return EntityType
448			*/
449			abstract protected function findUniqueEntity(Entity $entity) : Entity;
450			}
451

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