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<?php
/*
* Copyright 2015-2017 MongoDB, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace MongoDB;
use MongoDB\Driver\Cursor;
use MongoDB\Driver\Exception\RuntimeException as DriverRuntimeException;
use MongoDB\Driver\Manager;
use MongoDB\Driver\ReadConcern;
use MongoDB\Driver\ReadPreference;
use MongoDB\Driver\WriteConcern;
use MongoDB\Exception\InvalidArgumentException;
use MongoDB\Exception\UnexpectedValueException;
use MongoDB\Exception\UnsupportedException;
use MongoDB\GridFS\Bucket;
use MongoDB\Model\BSONArray;
use MongoDB\Model\BSONDocument;
use MongoDB\Model\CollectionInfoIterator;
use MongoDB\Operation\Aggregate;
use MongoDB\Operation\CreateCollection;
use MongoDB\Operation\DatabaseCommand;
use MongoDB\Operation\DropCollection;
use MongoDB\Operation\DropDatabase;
use MongoDB\Operation\ListCollections;
use MongoDB\Operation\ModifyCollection;
use MongoDB\Operation\Watch;
use Traversable;
use function is_array;
use function strlen;
class Database
{
/** @var array */
private static $defaultTypeMap = [
'array' => BSONArray::class,
'document' => BSONDocument::class,
'root' => BSONDocument::class,
];
/** @var integer */
private static $wireVersionForReadConcern = 4;
/** @var integer */
private static $wireVersionForWritableCommandWriteConcern = 5;
/** @var integer */
private static $wireVersionForReadConcernWithWriteStage = 8;
/** @var string */
private $databaseName;
/** @var Manager */
private $manager;
/** @var ReadConcern */
private $readConcern;
/** @var ReadPreference */
private $readPreference;
/** @var array */
private $typeMap;
/** @var WriteConcern */
private $writeConcern;
/**
* Constructs new Database instance.
*
* This class provides methods for database-specific operations and serves
* as a gateway for accessing collections.
*
* Supported options:
*
* * readConcern (MongoDB\Driver\ReadConcern): The default read concern to
* use for database operations and selected collections. Defaults to the
* Manager's read concern.
*
* * readPreference (MongoDB\Driver\ReadPreference): The default read
* preference to use for database operations and selected collections.
* Defaults to the Manager's read preference.
*
* * typeMap (array): Default type map for cursors and BSON documents.
*
* * writeConcern (MongoDB\Driver\WriteConcern): The default write concern
* to use for database operations and selected collections. Defaults to
* the Manager's write concern.
*
* @param Manager $manager Manager instance from the driver
* @param string $databaseName Database name
* @param array $options Database options
* @throws InvalidArgumentException for parameter/option parsing errors
*/
public function __construct(Manager $manager, $databaseName, array $options = [])
{
if (strlen($databaseName) < 1) {
throw new InvalidArgumentException('$databaseName is invalid: ' . $databaseName);
}
if (isset($options['readConcern']) && ! $options['readConcern'] instanceof ReadConcern) {
throw InvalidArgumentException::invalidType('"readConcern" option', $options['readConcern'], ReadConcern::class);
}
if (isset($options['readPreference']) && ! $options['readPreference'] instanceof ReadPreference) {
throw InvalidArgumentException::invalidType('"readPreference" option', $options['readPreference'], ReadPreference::class);
}
if (isset($options['typeMap']) && ! is_array($options['typeMap'])) {
throw InvalidArgumentException::invalidType('"typeMap" option', $options['typeMap'], 'array');
}
if (isset($options['writeConcern']) && ! $options['writeConcern'] instanceof WriteConcern) {
throw InvalidArgumentException::invalidType('"writeConcern" option', $options['writeConcern'], WriteConcern::class);
}
$this->manager = $manager;
$this->databaseName = (string) $databaseName;
$this->readConcern = isset($options['readConcern']) ? $options['readConcern'] : $this->manager->getReadConcern();
$this->readPreference = isset($options['readPreference']) ? $options['readPreference'] : $this->manager->getReadPreference();
$this->typeMap = isset($options['typeMap']) ? $options['typeMap'] : self::$defaultTypeMap;
$this->writeConcern = isset($options['writeConcern']) ? $options['writeConcern'] : $this->manager->getWriteConcern();
}
/**
* Return internal properties for debugging purposes.
*
* @see http://php.net/manual/en/language.oop5.magic.php#language.oop5.magic.debuginfo
* @return array
*/
public function __debugInfo()
{
return [
'databaseName' => $this->databaseName,
'manager' => $this->manager,
'readConcern' => $this->readConcern,
'readPreference' => $this->readPreference,
'typeMap' => $this->typeMap,
'writeConcern' => $this->writeConcern,
];
}
/**
* Select a collection within this database.
*
* Note: collections whose names contain special characters (e.g. ".") may
* be selected with complex syntax (e.g. $database->{"system.profile"}) or
* {@link selectCollection()}.
*
* @see http://php.net/oop5.overloading#object.get
* @see http://php.net/types.string#language.types.string.parsing.complex
* @param string $collectionName Name of the collection to select
* @return Collection
*/
public function __get($collectionName)
{
return $this->selectCollection($collectionName);
}
/**
* Return the database name.
*
* @return string
*/
public function __toString()
{
return $this->databaseName;
}
/**
* Runs an aggregation framework pipeline on the database for pipeline
* stages that do not require an underlying collection, such as $currentOp
* and $listLocalSessions. Requires MongoDB >= 3.6
*
* @see Aggregate::__construct() for supported options
* @param array $pipeline List of pipeline operations
* @param array $options Command options
* @return Traversable
* @throws UnexpectedValueException if the command response was malformed
* @throws UnsupportedException if options are not supported by the selected server
* @throws InvalidArgumentException for parameter/option parsing errors
* @throws DriverRuntimeException for other driver errors (e.g. connection errors)
*/
public function aggregate(array $pipeline, array $options = [])
{
$hasWriteStage = is_last_pipeline_operator_write($pipeline);
if (! isset($options['readPreference']) && ! is_in_transaction($options)) {
$options['readPreference'] = $this->readPreference;
}
if ($hasWriteStage) {
$options['readPreference'] = new ReadPreference(ReadPreference::RP_PRIMARY);
}
$server = select_server($this->manager, $options);
/* MongoDB 4.2 and later supports a read concern when an $out stage is
* being used, but earlier versions do not.
*
* A read concern is also not compatible with transactions.
*/
if (! isset($options['readConcern']) &&
server_supports_feature($server, self::$wireVersionForReadConcern) &&
! is_in_transaction($options) &&
( ! $hasWriteStage || server_supports_feature($server, self::$wireVersionForReadConcernWithWriteStage))
) {
$options['readConcern'] = $this->readConcern;
}
if (! isset($options['typeMap'])) {
$options['typeMap'] = $this->typeMap;
}
if ($hasWriteStage &&
! isset($options['writeConcern']) &&
server_supports_feature($server, self::$wireVersionForWritableCommandWriteConcern) &&
! is_in_transaction($options)) {
$options['writeConcern'] = $this->writeConcern;
}
$operation = new Aggregate($this->databaseName, null, $pipeline, $options);
return $operation->execute($server);
}
/**
* Execute a command on this database.
*
* @see DatabaseCommand::__construct() for supported options
* @param array|object $command Command document
* @param array $options Options for command execution
* @return Cursor
* @throws InvalidArgumentException for parameter/option parsing errors
* @throws DriverRuntimeException for other driver errors (e.g. connection errors)
*/
public function command($command, array $options = [])
{
if (! isset($options['readPreference']) && ! is_in_transaction($options)) {
$options['readPreference'] = $this->readPreference;
}
if (! isset($options['typeMap'])) {
$options['typeMap'] = $this->typeMap;
}
$operation = new DatabaseCommand($this->databaseName, $command, $options);
$server = select_server($this->manager, $options);
return $operation->execute($server);
}
/**
* Create a new collection explicitly.
*
* @see CreateCollection::__construct() for supported options
* @param string $collectionName
* @param array $options
* @return array|object Command result document
* @throws UnsupportedException if options are not supported by the selected server
* @throws InvalidArgumentException for parameter/option parsing errors
* @throws DriverRuntimeException for other driver errors (e.g. connection errors)
*/
public function createCollection($collectionName, array $options = [])
{
if (! isset($options['typeMap'])) {
$options['typeMap'] = $this->typeMap;
}
$server = select_server($this->manager, $options);
if (! isset($options['writeConcern']) && server_supports_feature($server, self::$wireVersionForWritableCommandWriteConcern) && ! is_in_transaction($options)) {
$options['writeConcern'] = $this->writeConcern;
}
$operation = new CreateCollection($this->databaseName, $collectionName, $options);
return $operation->execute($server);
}
/**
* Drop this database.
*
* @see DropDatabase::__construct() for supported options
* @param array $options Additional options
* @return array|object Command result document
* @throws UnsupportedException if options are unsupported on the selected server
* @throws InvalidArgumentException for parameter/option parsing errors
* @throws DriverRuntimeException for other driver errors (e.g. connection errors)
*/
public function drop(array $options = [])
{
if (! isset($options['typeMap'])) {
$options['typeMap'] = $this->typeMap;
}
$server = select_server($this->manager, $options);
if (! isset($options['writeConcern']) && server_supports_feature($server, self::$wireVersionForWritableCommandWriteConcern) && ! is_in_transaction($options)) {
$options['writeConcern'] = $this->writeConcern;
}
$operation = new DropDatabase($this->databaseName, $options);
return $operation->execute($server);
}
/**
* Drop a collection within this database.
*
* @see DropCollection::__construct() for supported options
* @param string $collectionName Collection name
* @param array $options Additional options
* @return array|object Command result document
* @throws UnsupportedException if options are unsupported on the selected server
* @throws InvalidArgumentException for parameter/option parsing errors
* @throws DriverRuntimeException for other driver errors (e.g. connection errors)
*/
public function dropCollection($collectionName, array $options = [])
{
if (! isset($options['typeMap'])) {
$options['typeMap'] = $this->typeMap;
}
$server = select_server($this->manager, $options);
if (! isset($options['writeConcern']) && server_supports_feature($server, self::$wireVersionForWritableCommandWriteConcern) && ! is_in_transaction($options)) {
$options['writeConcern'] = $this->writeConcern;
}
$operation = new DropCollection($this->databaseName, $collectionName, $options);
return $operation->execute($server);
}
/**
* Returns the database name.
*
* @return string
*/
public function getDatabaseName()
{
return $this->databaseName;
}
/**
* Return the Manager.
*
* @return Manager
*/
public function getManager()
{
return $this->manager;
}
/**
* Return the read concern for this database.
*
* @see http://php.net/manual/en/mongodb-driver-readconcern.isdefault.php
* @return ReadConcern
*/
public function getReadConcern()
{
return $this->readConcern;
}
/**
* Return the read preference for this database.
*
* @return ReadPreference
*/
public function getReadPreference()
{
return $this->readPreference;
}
/**
* Return the type map for this database.
*
* @return array
*/
public function getTypeMap()
{
return $this->typeMap;
}
/**
* Return the write concern for this database.
*
* @see http://php.net/manual/en/mongodb-driver-writeconcern.isdefault.php
* @return WriteConcern
*/
public function getWriteConcern()
{
return $this->writeConcern;
}
/**
* Returns information for all collections in this database.
*
* @see ListCollections::__construct() for supported options
* @param array $options
* @return CollectionInfoIterator
* @throws InvalidArgumentException for parameter/option parsing errors
* @throws DriverRuntimeException for other driver errors (e.g. connection errors)
*/
public function listCollections(array $options = [])
{
$operation = new ListCollections($this->databaseName, $options);
$server = select_server($this->manager, $options);
return $operation->execute($server);
}
/**
* Modifies a collection or view.
*
* @see ModifyCollection::__construct() for supported options
* @param string $collectionName Collection or view to modify
* @param array $collectionOptions Collection or view options to assign
* @param array $options Command options
* @return array|object
* @throws InvalidArgumentException for parameter/option parsing errors
* @throws DriverRuntimeException for other driver errors (e.g. connection errors)
*/
public function modifyCollection($collectionName, array $collectionOptions, array $options = [])
{
if (! isset($options['typeMap'])) {
$options['typeMap'] = $this->typeMap;
}
$server = select_server($this->manager, $options);
if (! isset($options['writeConcern']) && server_supports_feature($server, self::$wireVersionForWritableCommandWriteConcern) && ! is_in_transaction($options)) {
$options['writeConcern'] = $this->writeConcern;
}
$operation = new ModifyCollection($this->databaseName, $collectionName, $collectionOptions, $options);
return $operation->execute($server);
}
/**
* Select a collection within this database.
*
* @see Collection::__construct() for supported options
* @param string $collectionName Name of the collection to select
* @param array $options Collection constructor options
* @return Collection
* @throws InvalidArgumentException for parameter/option parsing errors
*/
public function selectCollection($collectionName, array $options = [])
{
$options += [
'readConcern' => $this->readConcern,
'readPreference' => $this->readPreference,
'typeMap' => $this->typeMap,
'writeConcern' => $this->writeConcern,
];
return new Collection($this->manager, $this->databaseName, $collectionName, $options);
}
/**
* Select a GridFS bucket within this database.
*
* @see Bucket::__construct() for supported options
* @param array $options Bucket constructor options
* @return Bucket
* @throws InvalidArgumentException for parameter/option parsing errors
*/
public function selectGridFSBucket(array $options = [])
{
$options += [
'readConcern' => $this->readConcern,
'readPreference' => $this->readPreference,
'typeMap' => $this->typeMap,
'writeConcern' => $this->writeConcern,
];
return new Bucket($this->manager, $this->databaseName, $options);
}
/**
* Create a change stream for watching changes to the database.
*
* @see Watch::__construct() for supported options
* @param array $pipeline List of pipeline operations
* @param array $options Command options
* @return ChangeStream
* @throws InvalidArgumentException for parameter/option parsing errors
*/
public function watch(array $pipeline = [], array $options = [])
{
if (! isset($options['readPreference']) && ! is_in_transaction($options)) {
$options['readPreference'] = $this->readPreference;
}
$server = select_server($this->manager, $options);
if (! isset($options['readConcern']) && server_supports_feature($server, self::$wireVersionForReadConcern) && ! is_in_transaction($options)) {
$options['readConcern'] = $this->readConcern;
}
if (! isset($options['typeMap'])) {
$options['typeMap'] = $this->typeMap;
}
$operation = new Watch($this->manager, $this->databaseName, null, $pipeline, $options);
return $operation->execute($server);
}
/**
* Get a clone of this database with different options.
*
* @see Database::__construct() for supported options
* @param array $options Database constructor options
* @return Database
* @throws InvalidArgumentException for parameter/option parsing errors
*/
public function withOptions(array $options = [])
{
$options += [
'readConcern' => $this->readConcern,
'readPreference' => $this->readPreference,
'typeMap' => $this->typeMap,
'writeConcern' => $this->writeConcern,
];
return new Database($this->manager, $this->databaseName, $options);
}
}