nextcloud / server

lib/public/AppFramework/Db/QBMapper.php

Indentation +316 added lines, -316 removed lines

@@ -44,320 +44,320 @@
  */
 abstract class QBMapper {
 
-	/** @var string */
-	protected $tableName;
-
-	/** @var string|class-string<T> */
-	protected $entityClass;
-
-	/** @var IDBConnection */
-	protected $db;
-
-	/**
-	 * @param IDBConnection $db Instance of the Db abstraction layer
-	 * @param string $tableName the name of the table. set this to allow entity
-	 * @param string|null $entityClass the name of the entity that the sql should be
-	 * @psalm-param class-string<T>|null $entityClass the name of the entity that the sql should be
-	 * mapped to queries without using sql
-	 * @since 14.0.0
-	 */
-	public function __construct(IDBConnection $db, string $tableName, string $entityClass = null) {
-		$this->db = $db;
-		$this->tableName = $tableName;
-
-		// if not given set the entity name to the class without the mapper part
-		// cache it here for later use since reflection is slow
-		if ($entityClass === null) {
-			$this->entityClass = str_replace('Mapper', '', \get_class($this));
-		} else {
-			$this->entityClass = $entityClass;
-		}
-	}
-
-
-	/**
-	 * @return string the table name
-	 * @since 14.0.0
-	 */
-	public function getTableName(): string {
-		return $this->tableName;
-	}
-
-
-	/**
-	 * Deletes an entity from the table
-	 *
-	 * @param Entity $entity the entity that should be deleted
-	 * @psalm-param T $entity the entity that should be deleted
-	 * @return Entity the deleted entity
-	 * @psalm-return T the deleted entity
-	 * @throws Exception
-	 * @since 14.0.0
-	 */
-	public function delete(Entity $entity): Entity {
-		$qb = $this->db->getQueryBuilder();
-
-		$idType = $this->getParameterTypeForProperty($entity, 'id');
-
-		$qb->delete($this->tableName)
-			->where(
-				$qb->expr()->eq('id', $qb->createNamedParameter($entity->getId(), $idType))
-			);
-		$qb->executeStatement();
-		return $entity;
-	}
-
-
-	/**
-	 * Creates a new entry in the db from an entity
-	 *
-	 * @param Entity $entity the entity that should be created
-	 * @psalm-param T $entity the entity that should be created
-	 * @return Entity the saved entity with the set id
-	 * @psalm-return T the saved entity with the set id
-	 * @throws Exception
-	 * @since 14.0.0
-	 */
-	public function insert(Entity $entity): Entity {
-		// get updated fields to save, fields have to be set using a setter to
-		// be saved
-		$properties = $entity->getUpdatedFields();
-
-		$qb = $this->db->getQueryBuilder();
-		$qb->insert($this->tableName);
-
-		// build the fields
-		foreach ($properties as $property => $updated) {
-			$column = $entity->propertyToColumn($property);
-			$getter = 'get' . ucfirst($property);
-			$value = $entity->$getter();
-
-			$type = $this->getParameterTypeForProperty($entity, $property);
-			$qb->setValue($column, $qb->createNamedParameter($value, $type));
-		}
-
-		$qb->executeStatement();
-
-		if ($entity->id === null) {
-			// When autoincrement is used id is always an int
-			$entity->setId($qb->getLastInsertId());
-		}
-
-		return $entity;
-	}
-
-	/**
-	 * Tries to creates a new entry in the db from an entity and
-	 * updates an existing entry if duplicate keys are detected
-	 * by the database
-	 *
-	 * @param Entity $entity the entity that should be created/updated
-	 * @psalm-param T $entity the entity that should be created/updated
-	 * @return Entity the saved entity with the (new) id
-	 * @psalm-return T the saved entity with the (new) id
-	 * @throws Exception
-	 * @throws \InvalidArgumentException if entity has no id
-	 * @since 15.0.0
-	 */
-	public function insertOrUpdate(Entity $entity): Entity {
-		try {
-			return $this->insert($entity);
-		} catch (Exception $ex) {
-			if ($ex->getReason() === Exception::REASON_UNIQUE_CONSTRAINT_VIOLATION) {
-				return $this->update($entity);
-			}
-			throw $ex;
-		}
-	}
-
-	/**
-	 * Updates an entry in the db from an entity
-	 *
-	 * @param Entity $entity the entity that should be created
-	 * @psalm-param T $entity the entity that should be created
-	 * @return Entity the saved entity with the set id
-	 * @psalm-return T the saved entity with the set id
-	 * @throws Exception
-	 * @throws \InvalidArgumentException if entity has no id
-	 * @since 14.0.0
-	 */
-	public function update(Entity $entity): Entity {
-		// if entity wasn't changed it makes no sense to run a db query
-		$properties = $entity->getUpdatedFields();
-		if (\count($properties) === 0) {
-			return $entity;
-		}
-
-		// entity needs an id
-		$id = $entity->getId();
-		if ($id === null) {
-			throw new \InvalidArgumentException(
-				'Entity which should be updated has no id');
-		}
-
-		// get updated fields to save, fields have to be set using a setter to
-		// be saved
-		// do not update the id field
-		unset($properties['id']);
-
-		$qb = $this->db->getQueryBuilder();
-		$qb->update($this->tableName);
-
-		// build the fields
-		foreach ($properties as $property => $updated) {
-			$column = $entity->propertyToColumn($property);
-			$getter = 'get' . ucfirst($property);
-			$value = $entity->$getter();
-
-			$type = $this->getParameterTypeForProperty($entity, $property);
-			$qb->set($column, $qb->createNamedParameter($value, $type));
-		}
-
-		$idType = $this->getParameterTypeForProperty($entity, 'id');
-
-		$qb->where(
-			$qb->expr()->eq('id', $qb->createNamedParameter($id, $idType))
-		);
-		$qb->executeStatement();
-
-		return $entity;
-	}
-
-	/**
-	 * Returns the type parameter for the QueryBuilder for a specific property
-	 * of the $entity
-	 *
-	 * @param Entity $entity   The entity to get the types from
-	 * @psalm-param T $entity
-	 * @param string $property The property of $entity to get the type for
-	 * @return int|string
-	 * @since 16.0.0
-	 */
-	protected function getParameterTypeForProperty(Entity $entity, string $property) {
-		$types = $entity->getFieldTypes();
-
-		if (!isset($types[ $property ])) {
-			return IQueryBuilder::PARAM_STR;
-		}
-
-		switch ($types[ $property ]) {
-			case 'int':
-			case 'integer':
-				return IQueryBuilder::PARAM_INT;
-			case 'string':
-				return IQueryBuilder::PARAM_STR;
-			case 'bool':
-			case 'boolean':
-				return IQueryBuilder::PARAM_BOOL;
-			case 'blob':
-				return IQueryBuilder::PARAM_LOB;
-			case 'datetime':
-				return IQueryBuilder::PARAM_DATE;
-		}
-
-		return IQueryBuilder::PARAM_STR;
-	}
-
-	/**
-	 * Returns an db result and throws exceptions when there are more or less
-	 * results
-	 *
-	 * @param IQueryBuilder $query
-	 * @return array the result as row
-	 * @throws Exception
-	 * @throws MultipleObjectsReturnedException if more than one item exist
-	 * @throws DoesNotExistException if the item does not exist
-	 * @see findEntity
-	 *
-	 * @since 14.0.0
-	 */
-	protected function findOneQuery(IQueryBuilder $query): array {
-		$result = $query->executeQuery();
-
-		$row = $result->fetch();
-		if ($row === false) {
-			$result->closeCursor();
-			$msg = $this->buildDebugMessage(
-				'Did expect one result but found none when executing', $query
-			);
-			throw new DoesNotExistException($msg);
-		}
-
-		$row2 = $result->fetch();
-		$result->closeCursor();
-		if ($row2 !== false) {
-			$msg = $this->buildDebugMessage(
-				'Did not expect more than one result when executing', $query
-			);
-			throw new MultipleObjectsReturnedException($msg);
-		}
-
-		return $row;
-	}
-
-	/**
-	 * @param string $msg
-	 * @param IQueryBuilder $sql
-	 * @return string
-	 * @since 14.0.0
-	 */
-	private function buildDebugMessage(string $msg, IQueryBuilder $sql): string {
-		return $msg .
-			': query "' . $sql->getSQL() . '"; ';
-	}
-
-
-	/**
-	 * Creates an entity from a row. Automatically determines the entity class
-	 * from the current mapper name (MyEntityMapper -> MyEntity)
-	 *
-	 * @param array $row the row which should be converted to an entity
-	 * @return Entity the entity
-	 * @psalm-return T the entity
-	 * @since 14.0.0
-	 */
-	protected function mapRowToEntity(array $row): Entity {
-		return \call_user_func($this->entityClass .'::fromRow', $row);
-	}
-
-
-	/**
-	 * Runs a sql query and returns an array of entities
-	 *
-	 * @param IQueryBuilder $query
-	 * @return Entity[] all fetched entities
-	 * @psalm-return T[] all fetched entities
-	 * @throws Exception
-	 * @since 14.0.0
-	 */
-	protected function findEntities(IQueryBuilder $query): array {
-		$result = $query->executeQuery();
-
-		$entities = [];
-
-		while ($row = $result->fetch()) {
-			$entities[] = $this->mapRowToEntity($row);
-		}
-
-		$result->closeCursor();
-
-		return $entities;
-	}
-
-
-	/**
-	 * Returns an db result and throws exceptions when there are more or less
-	 * results
-	 *
-	 * @param IQueryBuilder $query
-	 * @return Entity the entity
-	 * @psalm-return T the entity
-	 * @throws Exception
-	 * @throws MultipleObjectsReturnedException if more than one item exist
-	 * @throws DoesNotExistException if the item does not exist
-	 * @since 14.0.0
-	 */
-	protected function findEntity(IQueryBuilder $query): Entity {
-		return $this->mapRowToEntity($this->findOneQuery($query));
-	}
+    /** @var string */
+    protected $tableName;
+
+    /** @var string|class-string<T> */
+    protected $entityClass;
+
+    /** @var IDBConnection */
+    protected $db;
+
+    /**
+     * @param IDBConnection $db Instance of the Db abstraction layer
+     * @param string $tableName the name of the table. set this to allow entity
+     * @param string|null $entityClass the name of the entity that the sql should be
+     * @psalm-param class-string<T>|null $entityClass the name of the entity that the sql should be
+     * mapped to queries without using sql
+     * @since 14.0.0
+     */
+    public function __construct(IDBConnection $db, string $tableName, string $entityClass = null) {
+        $this->db = $db;
+        $this->tableName = $tableName;
+
+        // if not given set the entity name to the class without the mapper part
+        // cache it here for later use since reflection is slow
+        if ($entityClass === null) {
+            $this->entityClass = str_replace('Mapper', '', \get_class($this));
+        } else {
+            $this->entityClass = $entityClass;
+        }
+    }
+
+
+    /**
+     * @return string the table name
+     * @since 14.0.0
+     */
+    public function getTableName(): string {
+        return $this->tableName;
+    }
+
+
+    /**
+     * Deletes an entity from the table
+     *
+     * @param Entity $entity the entity that should be deleted
+     * @psalm-param T $entity the entity that should be deleted
+     * @return Entity the deleted entity
+     * @psalm-return T the deleted entity
+     * @throws Exception
+     * @since 14.0.0
+     */
+    public function delete(Entity $entity): Entity {
+        $qb = $this->db->getQueryBuilder();
+
+        $idType = $this->getParameterTypeForProperty($entity, 'id');
+
+        $qb->delete($this->tableName)
+            ->where(
+                $qb->expr()->eq('id', $qb->createNamedParameter($entity->getId(), $idType))
+            );
+        $qb->executeStatement();
+        return $entity;
+    }
+
+
+    /**
+     * Creates a new entry in the db from an entity
+     *
+     * @param Entity $entity the entity that should be created
+     * @psalm-param T $entity the entity that should be created
+     * @return Entity the saved entity with the set id
+     * @psalm-return T the saved entity with the set id
+     * @throws Exception
+     * @since 14.0.0
+     */
+    public function insert(Entity $entity): Entity {
+        // get updated fields to save, fields have to be set using a setter to
+        // be saved
+        $properties = $entity->getUpdatedFields();
+
+        $qb = $this->db->getQueryBuilder();
+        $qb->insert($this->tableName);
+
+        // build the fields
+        foreach ($properties as $property => $updated) {
+            $column = $entity->propertyToColumn($property);
+            $getter = 'get' . ucfirst($property);
+            $value = $entity->$getter();
+
+            $type = $this->getParameterTypeForProperty($entity, $property);
+            $qb->setValue($column, $qb->createNamedParameter($value, $type));
+        }
+
+        $qb->executeStatement();
+
+        if ($entity->id === null) {
+            // When autoincrement is used id is always an int
+            $entity->setId($qb->getLastInsertId());
+        }
+
+        return $entity;
+    }
+
+    /**
+     * Tries to creates a new entry in the db from an entity and
+     * updates an existing entry if duplicate keys are detected
+     * by the database
+     *
+     * @param Entity $entity the entity that should be created/updated
+     * @psalm-param T $entity the entity that should be created/updated
+     * @return Entity the saved entity with the (new) id
+     * @psalm-return T the saved entity with the (new) id
+     * @throws Exception
+     * @throws \InvalidArgumentException if entity has no id
+     * @since 15.0.0
+     */
+    public function insertOrUpdate(Entity $entity): Entity {
+        try {
+            return $this->insert($entity);
+        } catch (Exception $ex) {
+            if ($ex->getReason() === Exception::REASON_UNIQUE_CONSTRAINT_VIOLATION) {
+                return $this->update($entity);
+            }
+            throw $ex;
+        }
+    }
+
+    /**
+     * Updates an entry in the db from an entity
+     *
+     * @param Entity $entity the entity that should be created
+     * @psalm-param T $entity the entity that should be created
+     * @return Entity the saved entity with the set id
+     * @psalm-return T the saved entity with the set id
+     * @throws Exception
+     * @throws \InvalidArgumentException if entity has no id
+     * @since 14.0.0
+     */
+    public function update(Entity $entity): Entity {
+        // if entity wasn't changed it makes no sense to run a db query
+        $properties = $entity->getUpdatedFields();
+        if (\count($properties) === 0) {
+            return $entity;
+        }
+
+        // entity needs an id
+        $id = $entity->getId();
+        if ($id === null) {
+            throw new \InvalidArgumentException(
+                'Entity which should be updated has no id');
+        }
+
+        // get updated fields to save, fields have to be set using a setter to
+        // be saved
+        // do not update the id field
+        unset($properties['id']);
+
+        $qb = $this->db->getQueryBuilder();
+        $qb->update($this->tableName);
+
+        // build the fields
+        foreach ($properties as $property => $updated) {
+            $column = $entity->propertyToColumn($property);
+            $getter = 'get' . ucfirst($property);
+            $value = $entity->$getter();
+
+            $type = $this->getParameterTypeForProperty($entity, $property);
+            $qb->set($column, $qb->createNamedParameter($value, $type));
+        }
+
+        $idType = $this->getParameterTypeForProperty($entity, 'id');
+
+        $qb->where(
+            $qb->expr()->eq('id', $qb->createNamedParameter($id, $idType))
+        );
+        $qb->executeStatement();
+
+        return $entity;
+    }
+
+    /**
+     * Returns the type parameter for the QueryBuilder for a specific property
+     * of the $entity
+     *
+     * @param Entity $entity   The entity to get the types from
+     * @psalm-param T $entity
+     * @param string $property The property of $entity to get the type for
+     * @return int|string
+     * @since 16.0.0
+     */
+    protected function getParameterTypeForProperty(Entity $entity, string $property) {
+        $types = $entity->getFieldTypes();
+
+        if (!isset($types[ $property ])) {
+            return IQueryBuilder::PARAM_STR;
+        }
+
+        switch ($types[ $property ]) {
+            case 'int':
+            case 'integer':
+                return IQueryBuilder::PARAM_INT;
+            case 'string':
+                return IQueryBuilder::PARAM_STR;
+            case 'bool':
+            case 'boolean':
+                return IQueryBuilder::PARAM_BOOL;
+            case 'blob':
+                return IQueryBuilder::PARAM_LOB;
+            case 'datetime':
+                return IQueryBuilder::PARAM_DATE;
+        }
+
+        return IQueryBuilder::PARAM_STR;
+    }
+
+    /**
+     * Returns an db result and throws exceptions when there are more or less
+     * results
+     *
+     * @param IQueryBuilder $query
+     * @return array the result as row
+     * @throws Exception
+     * @throws MultipleObjectsReturnedException if more than one item exist
+     * @throws DoesNotExistException if the item does not exist
+     * @see findEntity
+     *
+     * @since 14.0.0
+     */
+    protected function findOneQuery(IQueryBuilder $query): array {
+        $result = $query->executeQuery();
+
+        $row = $result->fetch();
+        if ($row === false) {
+            $result->closeCursor();
+            $msg = $this->buildDebugMessage(
+                'Did expect one result but found none when executing', $query
+            );
+            throw new DoesNotExistException($msg);
+        }
+
+        $row2 = $result->fetch();
+        $result->closeCursor();
+        if ($row2 !== false) {
+            $msg = $this->buildDebugMessage(
+                'Did not expect more than one result when executing', $query
+            );
+            throw new MultipleObjectsReturnedException($msg);
+        }
+
+        return $row;
+    }
+
+    /**
+     * @param string $msg
+     * @param IQueryBuilder $sql
+     * @return string
+     * @since 14.0.0
+     */
+    private function buildDebugMessage(string $msg, IQueryBuilder $sql): string {
+        return $msg .
+            ': query "' . $sql->getSQL() . '"; ';
+    }
+
+
+    /**
+     * Creates an entity from a row. Automatically determines the entity class
+     * from the current mapper name (MyEntityMapper -> MyEntity)
+     *
+     * @param array $row the row which should be converted to an entity
+     * @return Entity the entity
+     * @psalm-return T the entity
+     * @since 14.0.0
+     */
+    protected function mapRowToEntity(array $row): Entity {
+        return \call_user_func($this->entityClass .'::fromRow', $row);
+    }
+
+
+    /**
+     * Runs a sql query and returns an array of entities
+     *
+     * @param IQueryBuilder $query
+     * @return Entity[] all fetched entities
+     * @psalm-return T[] all fetched entities
+     * @throws Exception
+     * @since 14.0.0
+     */
+    protected function findEntities(IQueryBuilder $query): array {
+        $result = $query->executeQuery();
+
+        $entities = [];
+
+        while ($row = $result->fetch()) {
+            $entities[] = $this->mapRowToEntity($row);
+        }
+
+        $result->closeCursor();
+
+        return $entities;
+    }
+
+
+    /**
+     * Returns an db result and throws exceptions when there are more or less
+     * results
+     *
+     * @param IQueryBuilder $query
+     * @return Entity the entity
+     * @psalm-return T the entity
+     * @throws Exception
+     * @throws MultipleObjectsReturnedException if more than one item exist
+     * @throws DoesNotExistException if the item does not exist
+     * @since 14.0.0
+     */
+    protected function findEntity(IQueryBuilder $query): Entity {
+        return $this->mapRowToEntity($this->findOneQuery($query));
+    }
 }