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UniqueConstraint.php
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UniqueConstraint.php
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<?php
namespace Doctrine\DBAL\Schema;
use Doctrine\DBAL\Platforms\AbstractPlatform;
use function array_keys;
use function array_map;
use function strtolower;
/**
* Class for a unique constraint.
*/
class UniqueConstraint extends AbstractAsset implements Constraint
{
/**
* Asset identifier instances of the column names the unique constraint is associated with.
* array($columnName => Identifier)
*
* @var Identifier[]
*/
protected $columns = [];
/**
* Platform specific flags.
* array($flagName => true)
*
* @var true[]
*/
protected $flags = [];
/**
* Platform specific options.
*
* @var mixed[]
*/
private array $options;
/**
* @param string[] $columns
* @param string[] $flags
* @param mixed[] $options
*/
public function __construct(string $name, array $columns, array $flags = [], array $options = [])
{
$this->_setName($name);
$this->options = $options;
foreach ($columns as $column) {
$this->addColumn($column);
}
foreach ($flags as $flag) {
$this->addFlag($flag);
}
}
/**
* {@inheritDoc}
*/
public function getColumns()
{
return array_keys($this->columns);
}
/**
* {@inheritDoc}
*/
public function getQuotedColumns(AbstractPlatform $platform)
{
$columns = [];
foreach ($this->columns as $column) {
$columns[] = $column->getQuotedName($platform);
}
return $columns;
}
/** @return string[] */
public function getUnquotedColumns(): array
{
return array_map([$this, 'trimQuotes'], $this->getColumns());
}
/**
* Returns platform specific flags for unique constraint.
*
* @return string[]
*/
public function getFlags(): array
{
return array_keys($this->flags);
}
/**
* Adds flag for a unique constraint that translates to platform specific handling.
*
* @return $this
*
* @example $uniqueConstraint->addFlag('CLUSTERED')
*/
public function addFlag(string $flag): UniqueConstraint
{
$this->flags[strtolower($flag)] = true;
return $this;
}
/**
* Does this unique constraint have a specific flag?
*/
public function hasFlag(string $flag): bool
{
return isset($this->flags[strtolower($flag)]);
}
/**
* Removes a flag.
*/
public function removeFlag(string $flag): void
{
unset($this->flags[strtolower($flag)]);
}
/**
* Does this unique constraint have a specific option?
*/
public function hasOption(string $name): bool
{
return isset($this->options[strtolower($name)]);
}
/** @return mixed */
public function getOption(string $name)
{
return $this->options[strtolower($name)];
}
/** @return mixed[] */
public function getOptions(): array
{
return $this->options;
}
/**
* Adds a new column to the unique constraint.
*/
protected function addColumn(string $column): void
{
$this->columns[$column] = new Identifier($column);
}
}

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