AliasRepositoryInterface.php

<?php

namespace Drupal\path_alias;


/**
 * Provides an interface for path alias lookup operations.
 *
 * The path alias repository service is only used internally in order to
 * optimize alias lookup queries needed in the critical path of each request.
 * However, it is not marked as an internal service because alternative storage
 * backends still need to override it if they provide a different storage class
 * for the PathAlias entity type.
 *
 * Whenever you need to determine whether an alias exists for a system path, or
 * whether a system path has an alias, the 'path_alias.manager' service should
 * be used instead.
 */
interface AliasRepositoryInterface {
    
    /**
     * Pre-loads path alias information for a given list of system paths.
     *
     * @param array $preloaded
     *   System paths that need preloading of aliases.
     * @param string $langcode
     *   Language code to search the path with. If there's no path defined for
     *   that language it will search paths without language.
     *
     * @return string[]
     *   System paths (keys) to alias (values) mapping.
     */
    public function preloadPathAlias($preloaded, $langcode);
    
    /**
     * Searches a path alias for a given Drupal system path.
     *
     * The default implementation performs case-insensitive matching on the
     * 'path' and 'alias' strings.
     *
     * @param string $path
     *   The system path to investigate for corresponding path aliases.
     * @param string $langcode
     *   Language code to search the path with. If there's no path defined for
     *   that language it will search paths without language.
     *
     * @return array|null
     *   An array containing the 'id', 'path', 'alias' and 'langcode' properties
     *   of a path alias, or NULL if none was found.
     */
    public function lookupBySystemPath($path, $langcode);
    
    /**
     * Searches a path alias for a given alias.
     *
     * The default implementation performs case-insensitive matching on the
     * 'path' and 'alias' strings.
     *
     * @param string $alias
     *   The alias to investigate for corresponding system paths.
     * @param string $langcode
     *   Language code to search the alias with. If there's no alias defined for
     *   that language it will search aliases without language.
     *
     * @return array|null
     *   An array containing the 'id', 'path', 'alias' and 'langcode' properties
     *   of a path alias, or NULL if none was found.
     */
    public function lookupByAlias($alias, $langcode);
    
    /**
     * Check if any alias exists starting with $initial_substring.
     *
     * @param string $initial_substring
     *   Initial system path substring to test against.
     *
     * @return bool
     *   TRUE if any alias exists, FALSE otherwise.
     */
    public function pathHasMatchingAlias($initial_substring);

}