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<?php

namespace Doctrine\DBAL\Schema;

use Doctrine\DBAL\Platforms\AbstractPlatform;

/**
 * Marker interface for constraints.
 *
 * @deprecated Use {@see ForeignKeyConstraint}, {@see Index} or {@see UniqueConstraint} instead.
 */
interface Constraint
{
    /** @return string */
    public function getName();

/** @return string */
    public function getQuotedName(AbstractPlatform $platform);

/**
     * Returns the names of the referencing table columns
     * the constraint is associated with.
     *
     * @return string[]
     */
    public function getColumns();

/**
     * Returns the quoted representation of the column names
     * the constraint is associated with.
     *
     * But only if they were defined with one or a column name
     * is a keyword reserved by the platform.
     * Otherwise the plain unquoted value as inserted is returned.
     *
     * @param AbstractPlatform $platform The platform to use for quotation.
     *
     * @return string[]
     */
    public function getQuotedColumns(AbstractPlatform $platform);
}