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<?php
namespace Illuminate\Database\Schema;
use Closure;
use Illuminate\Container\Container;
use Illuminate\Database\Connection;
use InvalidArgumentException;
use LogicException;
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|null
*/
public static $defaultStringLength = 255;
/**
* The default relationship morph key type.
*
* @var string
*/
public static $defaultMorphKeyType = 'int';
/**
* Indicates whether Doctrine DBAL usage will be prevented if possible when dropping and renaming columns.
*
* @var bool
*/
public static $alwaysUsesNativeSchemaOperationsIfPossible = false;
/**
* 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;
}
/**
* Set the default morph key type for migrations.
*
* @param string $type
* @return void
*
* @throws \InvalidArgumentException
*/
public static function defaultMorphKeyType(string $type)
{
if (! in_array($type, ['int', 'uuid', 'ulid'])) {
throw new InvalidArgumentException("Morph key type must be 'int', 'uuid', or 'ulid'.");
}
static::$defaultMorphKeyType = $type;
}
/**
* Set the default morph key type for migrations to UUIDs.
*
* @return void
*/
public static function morphUsingUuids()
{
return static::defaultMorphKeyType('uuid');
}
/**
* Set the default morph key type for migrations to ULIDs.
*
* @return void
*/
public static function morphUsingUlids()
{
return static::defaultMorphKeyType('ulid');
}
/**
* Attempt to use native schema operations for dropping and renaming columns, even if Doctrine DBAL is installed.
*
* @param bool $value
* @return void
*/
public static function useNativeSchemaOperationsIfPossible(bool $value = true)
{
static::$alwaysUsesNativeSchemaOperationsIfPossible = $value;
}
/**
* Create a database in the schema.
*
* @param string $name
* @return bool
*
* @throws \LogicException
*/
public function createDatabase($name)
{
throw new LogicException('This database driver does not support creating databases.');
}
/**
* Drop a database from the schema if the database exists.
*
* @param string $name
* @return bool
*
* @throws \LogicException
*/
public function dropDatabaseIfExists($name)
{
throw new LogicException('This database driver does not support dropping databases.');
}
/**
* 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;
}
/**
* Execute a table builder callback if the given table has a given column.
*
* @param string $table
* @param string $column
* @param \Closure $callback
* @return void
*/
public function whenTableHasColumn(string $table, string $column, Closure $callback)
{
if ($this->hasColumn($table, $column)) {
$this->table($table, fn (Blueprint $table) => $callback($table));
}
}
/**
* Execute a table builder callback if the given table doesn't have a given column.
*
* @param string $table
* @param string $column
* @param \Closure $callback
* @return void
*/
public function whenTableDoesntHaveColumn(string $table, string $column, Closure $callback)
{
if (! $this->hasColumn($table, $column)) {
$this->table($table, fn (Blueprint $table) => $callback($table));
}
}
/**
* 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 columns from a table schema.
*
* @param string $table
* @param string|array $columns
* @return void
*/
public function dropColumns($table, $columns)
{
$this->table($table, function (Blueprint $blueprint) use ($columns) {
$blueprint->dropColumn($columns);
});
}
/**
* 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()
);
}
/**
* Disable foreign key constraints during the execution of a callback.
*
* @param \Closure $callback
* @return mixed
*/
public function withoutForeignKeyConstraints(Closure $callback)
{
$this->disableForeignKeyConstraints();
$result = $callback();
$this->enableForeignKeyConstraints();
return $result;
}
/**
* 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 Container::getInstance()->make(Blueprint::class, compact('table', 'callback', 'prefix'));
}
/**
* 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;
}
}
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