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<?php
namespace Laminas\Db\Sql\Ddl\Constraint;
use function array_fill;
use function array_merge;
use function count;
use function implode;
use function sprintf;
abstract class AbstractConstraint implements ConstraintInterface
{
/** @var string */
protected $columnSpecification = ' (%s)';
/** @var string */
protected $namedSpecification = 'CONSTRAINT %s ';
/** @var string */
protected $specification = '';
/** @var string */
protected $name = '';
/** @var array */
protected $columns = [];
/**
* @param null|string|array $columns
* @param null|string $name
*/
public function __construct($columns = null, $name = null)
{
if ($columns) {
$this->setColumns($columns);
}
$this->setName($name);
}
/**
* @param string $name
* @return $this Provides a fluent interface
*/
public function setName($name)
{
$this->name = (string) $name;
return $this;
}
/**
* @return string
*/
public function getName()
{
return $this->name;
}
/**
* @param null|string|array $columns
* @return $this Provides a fluent interface
*/
public function setColumns($columns)
{
$this->columns = (array) $columns;
return $this;
}
/**
* @param string $column
* @return $this Provides a fluent interface
*/
public function addColumn($column)
{
$this->columns[] = $column;
return $this;
}
/**
* {@inheritDoc}
*/
public function getColumns()
{
return $this->columns;
}
/**
* {@inheritDoc}
*/
public function getExpressionData()
{
$colCount = count($this->columns);
$newSpecTypes = [];
$values = [];
$newSpec = '';
if ($this->name) {
$newSpec .= $this->namedSpecification;
$values[] = $this->name;
$newSpecTypes[] = self::TYPE_IDENTIFIER;
}
$newSpec .= $this->specification;
if ($colCount) {
$values = array_merge($values, $this->columns);
$newSpecParts = array_fill(0, $colCount, '%s');
$newSpecTypes = array_merge($newSpecTypes, array_fill(0, $colCount, self::TYPE_IDENTIFIER));
$newSpec .= sprintf($this->columnSpecification, implode(', ', $newSpecParts));
}
return [
[
$newSpec,
$values,
$newSpecTypes,
],
];
}
}