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<?php |
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namespace lroman242\LaravelCassandra; |
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use Cassandra; |
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use Cassandra\BatchStatement; |
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use \lroman242\LaravelCassandra\Exceptions\CassandraNotSupportedException; |
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class Connection extends \Illuminate\Database\Connection |
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{ |
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/** |
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* The Cassandra keyspace |
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* |
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* @var string |
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*/ |
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protected $keyspace; |
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/** |
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* The Cassandra connection handler. |
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* |
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* @var \Cassandra\Session |
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*/ |
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protected $session; |
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/** |
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* The config |
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* |
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* @var array |
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*/ |
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protected $config; |
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/** |
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* The Cassandra cluster |
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* |
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* @var \Cassandra\Cluster |
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*/ |
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protected $cluster; |
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/** |
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* Connection constructor. |
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* @param Cassandra\Cluster $cluster |
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* @param array $config |
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*/ |
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public function __construct(\Cassandra\Cluster $cluster, array $config) |
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{ |
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$this->config = $config; |
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$this->cluster = $cluster; |
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$this->keyspace = $this->getDatabase($config); |
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$this->session = $this->cluster->connect($this->keyspace); |
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$this->useDefaultPostProcessor(); |
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$this->useDefaultSchemaGrammar(); |
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$this->setQueryGrammar($this->getDefaultQueryGrammar()); |
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} |
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/** |
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* Get keyspace name from config |
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* |
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* @param array $config |
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* |
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* @return string|null |
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*/ |
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protected function getDatabase(array $config) |
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{ |
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$keyspaceName = null; |
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if (isset($config['keyspace'])) { |
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$keyspaceName = $config['keyspace']; |
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} |
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return $keyspaceName; |
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} |
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/** |
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* Begin a fluent query against a database table. |
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* |
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* @param string $table |
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* @return Query\Builder |
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*/ |
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public function table($table) |
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{ |
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$processor = $this->getPostProcessor(); |
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$query = new Query\Builder($this, null, $processor); |
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return $query->from($table); |
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} |
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/** |
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* return Cassandra cluster. |
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* |
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* @return \Cassandra\Cluster |
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*/ |
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public function getCassandraCluster() |
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{ |
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return $this->cluster; |
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} |
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/** |
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* return Cassandra Session. |
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* |
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* @return \Cassandra\Session |
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*/ |
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public function getCassandraSession() |
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{ |
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return $this->session; |
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} |
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/** |
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* Return the Cassandra keyspace |
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* |
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* @return string |
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*/ |
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public function getKeyspace() |
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{ |
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return $this->keyspace; |
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} |
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/** |
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* Disconnect from the underlying Cassandra connection. |
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*/ |
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public function disconnect() |
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{ |
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$this->session->close(); |
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$this->session = null; |
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} |
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/** |
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* Get the PDO driver name. |
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* |
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* @return string |
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*/ |
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public function getDriverName() |
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{ |
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return 'cassandra'; |
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} |
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/** |
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* Run a select statement against the database. |
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* |
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* @param string $query |
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* @param array $bindings |
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* @param bool $useReadPdo |
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* @param array $customOptions |
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* |
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* @return mixed |
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*/ |
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public function select($query, $bindings = [], $useReadPdo = true, array $customOptions = []) |
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{ |
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return $this->statement($query, $bindings, $customOptions); |
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} |
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/** |
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* Run an bulk insert statement against the database. |
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* |
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* @param array $queries |
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* @param array $bindings |
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* @param int $type |
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* @param array $customOptions |
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* |
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* @return bool |
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*/ |
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public function insertBulk($queries = [], $bindings = [], $type = Cassandra::BATCH_LOGGED, array $customOptions = []) |
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{ |
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return $this->batchStatement($queries, $bindings, $type, $customOptions); |
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} |
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/** |
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* Execute a group of queries inside a batch statement against the database. |
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* |
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* @param array $queries |
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* @param array $bindings |
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* @param int $type |
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* @param array $customOptions |
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* |
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* @return bool |
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*/ |
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public function batchStatement($queries = [], $bindings = [], $type = Cassandra::BATCH_LOGGED, array $customOptions = []) |
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{ |
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return $this->run($queries, $bindings, function ($queries, $bindings) use ($type, $customOptions) { |
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if ($this->pretending()) { |
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return []; |
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} |
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$batch = new BatchStatement($type); |
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foreach ($queries as $k => $query) { |
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$preparedStatement = $this->session->prepare($query); |
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$batch->add($preparedStatement, $bindings[$k]); |
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} |
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return $this->session->execute($batch, $customOptions); |
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}); |
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} |
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/** |
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* Execute an CQL statement and return the boolean result. |
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* |
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* @param string $query |
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* @param array $bindings |
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* @param array $customOptions |
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* |
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* @return mixed |
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*/ |
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public function statement($query, $bindings = [], array $customOptions = []) |
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{ |
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return $this->runStatement($query, $bindings, $customOptions); |
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} |
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/** |
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* Because Cassandra is an eventually consistent database, it's not possible to obtain |
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* the affected count for statements so we're just going to return 0, based on the idea |
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* that if the query fails somehow, an exception will be thrown |
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* |
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* @param string $query |
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* @param array $bindings |
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* @param array $customOptions |
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* |
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* @return int |
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*/ |
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public function affectingStatement($query, $bindings = [], array $customOptions = []) |
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{ |
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return $this->runStatement($query, $bindings, $customOptions, 0, 1); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function getDefaultPostProcessor() |
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{ |
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return new Query\Processor(); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function getDefaultQueryGrammar() |
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{ |
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return new Query\Grammar(); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function getDefaultSchemaGrammar() |
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{ |
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//return new Schema\Grammar(); |
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} |
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/** |
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* Reconnect to the database if connection is missing. |
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* |
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* @return void |
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*/ |
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protected function reconnectIfMissingConnection() |
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{ |
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if (is_null($this->session)) { |
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$this->session = $this->cluster->connect($this->keyspace); |
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} |
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} |
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/** |
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* Dynamically pass methods to the connection. |
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* |
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* @param string $method |
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* @param array $parameters |
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* @return mixed |
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*/ |
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public function __call($method, $parameters) |
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{ |
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return call_user_func_array([$this->session, $method], $parameters); |
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} |
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/** |
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* Execute an CQL statement and return the boolean result. |
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* |
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* @param string $query |
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* @param array $bindings |
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* @param array $customOptions |
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* @param mixed $defaultFailed |
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* @param mixed $defaultSuccess |
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* |
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* @return mixed |
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*/ |
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protected function runStatement($query, $bindings = [], array $customOptions = [], $defaultFailed = [], $defaultSuccess = null) |
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{ |
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return $this->run($query, $bindings, function ($query, $bindings) use ($customOptions, $defaultFailed, $defaultSuccess) { |
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if ($this->pretending()) { |
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return $defaultFailed; |
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} |
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$preparedStatement = $this->session->prepare($query); |
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//Add bindings |
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$customOptions['arguments'] = $bindings; |
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$result = $this->session->execute($preparedStatement, $customOptions); |
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return $defaultSuccess === null ? $result : $defaultSuccess; |
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}); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function transaction(\Closure $callback, $attempts = 1) |
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{ |
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throw new CassandraNotSupportedException("Transactions is not supported by Cassandra database"); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function beginTransaction() |
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{ |
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throw new CassandraNotSupportedException("Transactions is not supported by Cassandra database"); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function commit() |
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{ |
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throw new CassandraNotSupportedException("Transactions is not supported by Cassandra database"); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function rollBack() |
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{ |
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throw new CassandraNotSupportedException("Transactions is not supported by Cassandra database"); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function transactionLevel() |
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{ |
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throw new CassandraNotSupportedException("Transactions is not supported by Cassandra database"); |
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} |
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//TODO: override isDoctrineAvailable method |
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//TODO: override getDoctrineColumn method |
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//TODO: override getDoctrineSchemaManager method |
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//TODO: override getDoctrineConnection method |
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//TODO: override getPdo method |
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//TODO: override getReadPdo method |
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//TODO: override setPdo method |
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//TODO: override setReadPdo method |
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//TODO: override setReconnector method |
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//TODO: override reconnect method |
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//TODO: override query method |
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//TODO: override bindValues method |
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//TODO: override cursor method |
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//TODO: override unprepared method |
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//TODO: check prepareBindings method |
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//TODO: provide interface for $this->session->executeAsync |
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//TODO: provide interface for $this->session->prepareAsync |
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//TODO: provide interface for $this->session->closeAsync |
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//TODO: provide interface for $this->session->schema |
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} |
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It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: