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<?php namespace Illuminate\Database\Schema; use Closure; use Doctrine\DBAL\Types\Type; use Illuminate\Database\Connection; use LogicException; use RuntimeException; class Builder { /** * The database connection instance. * * @var \Illuminate\Database\Connection / protected $connection; /* * The schema grammar instance. * * @var \Illuminate\Database\Schema\Grammars\Grammar / protected $grammar; /* * The Blueprint resolver callback. * * @var \Closure / protected $resolver; /* * The default string length for migrations. * * @var int / public static $defaultStringLength = 255; /* * Create a new database Schema manager. * * @param \Illuminate\Database\Connection $connection * @return void / public function __construct(Connection $connection) { $this->connection = $connection; $this->grammar = $connection->getSchemaGrammar(); } /* * Set the default string length for migrations. * * @param int $length * @return void / public static function defaultStringLength($length) { static::$defaultStringLength = $length; } /* * Determine if the given table exists. * * @param string $table * @return bool / public function hasTable($table) { $table = $this->connection->getTablePrefix().$table; return count($this->connection->selectFromWriteConnection( $this->grammar->compileTableExists(), [$table] )) > 0; } /* * Determine if the given table has a given column. * * @param string $table * @param string $column * @return bool / public function hasColumn($table, $column) { return in_array( strtolower($column), array_map('strtolower', $this->getColumnListing($table)) ); } /* * Determine if the given table has given columns. * * @param string $table * @param array $columns * @return bool / public function hasColumns($table, array $columns) { $tableColumns = array_map('strtolower', $this->getColumnListing($table)); foreach ($columns as $column) { if (! in_array(strtolower($column), $tableColumns)) { return false; } } return true; } /* * Get the data type for the given column name. * * @param string $table * @param string $column * @return string / public function getColumnType($table, $column) { $table = $this->connection->getTablePrefix().$table; return $this->connection->getDoctrineColumn($table, $column)->getType()->getName(); } /* * Get the column listing for a given table. * * @param string $table * @return array / public function getColumnListing($table) { $results = $this->connection->selectFromWriteConnection($this->grammar->compileColumnListing( $this->connection->getTablePrefix().$table )); return $this->connection->getPostProcessor()->processColumnListing($results); } /* * Modify a table on the schema. * * @param string $table * @param \Closure $callback * @return void / public function table($table, Closure $callback) { $this->build($this->createBlueprint($table, $callback)); } /* * Create a new table on the schema. * * @param string $table * @param \Closure $callback * @return void / public function create($table, Closure $callback) { $this->build(tap($this->createBlueprint($table), function ($blueprint) use ($callback) { $blueprint->create(); $callback($blueprint); })); } /* * Drop a table from the schema. * * @param string $table * @return void / public function drop($table) { $this->build(tap($this->createBlueprint($table), function ($blueprint) { $blueprint->drop(); })); } /* * Drop a table from the schema if it exists. * * @param string $table * @return void / public function dropIfExists($table) { $this->build(tap($this->createBlueprint($table), function ($blueprint) { $blueprint->dropIfExists(); })); } /* * Drop all tables from the database. * * @return void * * @throws \LogicException / public function dropAllTables() { throw new LogicException('This database driver does not support dropping all tables.'); } /* * Drop all views from the database. * * @return void * * @throws \LogicException / public function dropAllViews() { throw new LogicException('This database driver does not support dropping all views.'); } /* * Drop all types from the database. * * @return void * * @throws \LogicException / public function dropAllTypes() { throw new LogicException('This database driver does not support dropping all types.'); } /* * Get all of the table names for the database. * * @return void * * @throws \LogicException / public function getAllTables() { throw new LogicException('This database driver does not support getting all tables.'); } /* * Rename a table on the schema. * * @param string $from * @param string $to * @return void / public function rename($from, $to) { $this->build(tap($this->createBlueprint($from), function ($blueprint) use ($to) { $blueprint->rename($to); })); } /* * Enable foreign key constraints. * * @return bool / public function enableForeignKeyConstraints() { return $this->connection->statement( $this->grammar->compileEnableForeignKeyConstraints() ); } /* * Disable foreign key constraints. * * @return bool / public function disableForeignKeyConstraints() { return $this->connection->statement( $this->grammar->compileDisableForeignKeyConstraints() ); } /* * Execute the blueprint to build / modify the table. * * @param \Illuminate\Database\Schema\Blueprint $blueprint * @return void / protected function build(Blueprint $blueprint) { $blueprint->build($this->connection, $this->grammar); } /* * Create a new command set with a Closure. * * @param string $table * @param \Closure\|null $callback * @return \Illuminate\Database\Schema\Blueprint / protected function createBlueprint($table, Closure $callback = null) { $prefix = $this->connection->getConfig('prefix_indexes') ? $this->connection->getConfig('prefix') : ''; if (isset($this->resolver)) { return call_user_func($this->resolver, $table, $callback, $prefix); } return new Blueprint($table, $callback, $prefix); } /* * Register a custom Doctrine mapping type. * * @param string $class * @param string $name * @param string $type * @return void * * @throws \Doctrine\DBAL\DBALException / public function registerCustomDoctrineType($class, $name, $type) { if (! $this->connection->isDoctrineAvailable()) { throw new RuntimeException( 'Registering a custom Doctrine type requires Doctrine DBAL (doctrine/dbal).' ); } if (! Type::hasType($name)) { Type::addType($name, $class); $this->connection ->getDoctrineSchemaManager() ->getDatabasePlatform() ->registerDoctrineTypeMapping($type, $name); } } /* * Get the database connection instance. * * @return \Illuminate\Database\Connection / public function getConnection() { return $this->connection; } /* * Set the database connection instance. * * @param \Illuminate\Database\Connection $connection * @return $this / public function setConnection(Connection $connection) { $this->connection = $connection; return $this; } /* * Set the Schema Blueprint resolver callback. * * @param \Closure $resolver * @return void */ public function blueprintResolver(Closure $resolver) { $this->resolver = $resolver; } }