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<?php
namespace Illuminate\Database;
use Doctrine\DBAL\Driver\PDOSqlite\Driver as DoctrineDriver;
use Doctrine\DBAL\Version;
use Illuminate\Database\PDO\SQLiteDriver;
use Illuminate\Database\Query\Grammars\SQLiteGrammar as QueryGrammar;
use Illuminate\Database\Query\Processors\SQLiteProcessor;
use Illuminate\Database\Schema\Grammars\SQLiteGrammar as SchemaGrammar;
use Illuminate\Database\Schema\SQLiteBuilder;
use Illuminate\Database\Schema\SqliteSchemaState;
use Illuminate\Filesystem\Filesystem;
class SQLiteConnection extends Connection
{
/**
* Create a new database connection instance.
*
* @param \PDO|\Closure $pdo
* @param string $database
* @param string $tablePrefix
* @param array $config
* @return void
*/
public function __construct($pdo, $database = '', $tablePrefix = '', array $config = [])
{
parent::__construct($pdo, $database, $tablePrefix, $config);
$enableForeignKeyConstraints = $this->getForeignKeyConstraintsConfigurationValue();
if ($enableForeignKeyConstraints === null) {
return;
}
$enableForeignKeyConstraints
? $this->getSchemaBuilder()->enableForeignKeyConstraints()
: $this->getSchemaBuilder()->disableForeignKeyConstraints();
}
/**
* Get the default query grammar instance.
*
* @return \Illuminate\Database\Query\Grammars\SQLiteGrammar
*/
protected function getDefaultQueryGrammar()
{
return $this->withTablePrefix(new QueryGrammar);
}
/**
* Get a schema builder instance for the connection.
*
* @return \Illuminate\Database\Schema\SQLiteBuilder
*/
public function getSchemaBuilder()
{
if (is_null($this->schemaGrammar)) {
$this->useDefaultSchemaGrammar();
}
return new SQLiteBuilder($this);
}
/**
* Get the default schema grammar instance.
*
* @return \Illuminate\Database\Schema\Grammars\SQLiteGrammar
*/
protected function getDefaultSchemaGrammar()
{
return $this->withTablePrefix(new SchemaGrammar);
}
/**
* Get the schema state for the connection.
*
* @param \Illuminate\Filesystem\Filesystem|null $files
* @param callable|null $processFactory
*
* @throws \RuntimeException
*/
public function getSchemaState(Filesystem $files = null, callable $processFactory = null)
{
return new SqliteSchemaState($this, $files, $processFactory);
}
/**
* Get the default post processor instance.
*
* @return \Illuminate\Database\Query\Processors\SQLiteProcessor
*/
protected function getDefaultPostProcessor()
{
return new SQLiteProcessor;
}
/**
* Get the Doctrine DBAL driver.
*
* @return \Doctrine\DBAL\Driver\PDOSqlite\Driver|\Illuminate\Database\PDO\SQLiteDriver
*/
protected function getDoctrineDriver()
{
return class_exists(Version::class) ? new DoctrineDriver : new SQLiteDriver;
}
/**
* Get the database connection foreign key constraints configuration option.
*
* @return bool|null
*/
protected function getForeignKeyConstraintsConfigurationValue()
{
return $this->getConfig('foreign_key_constraints');
}
}