# phpman > perldoc > HTML::Mason::Resolver

## NAME
    [HTML::Mason::Resolver](https://www.chedong.com/phpMan.php/perldoc/HTML%3A%3AMason%3A%3AResolver/markdown) - Component path resolver base class

## SYNOPSIS
      # make a subclass and use it

## DESCRIPTION
    The resolver is responsible for translating a component path like /foo/index.html into a
    component. By default, Mason expects components to be stored on the filesystem, and uses the
    [HTML::Mason::Resolver::File](https://www.chedong.com/phpMan.php/perldoc/HTML%3A%3AMason%3A%3AResolver%3A%3AFile/markdown) class to get information on these components.

    The [HTML::Mason::Resolver](https://www.chedong.com/phpMan.php/perldoc/HTML%3A%3AMason%3A%3AResolver/markdown) provides a virtual parent class from which all resolver
    implementations should inherit.

## [Class::Container](https://www.chedong.com/phpMan.php/perldoc/Class%3A%3AContainer/markdown)
    This class is used by most of the Mason object's to manage constructor parameters and has-a
    relationships with other objects.

    See the documentation on this class for details on how to declare what parameters are valid for
    your subclass's constructor.

    [HTML::Mason::Resolver](https://www.chedong.com/phpMan.php/perldoc/HTML%3A%3AMason%3A%3AResolver/markdown) is a subclass of [Class::Container](https://www.chedong.com/phpMan.php/perldoc/Class%3A%3AContainer/markdown) so you do not need to subclass it
    yourself.

## METHODS
    If you are interested in creating a resolver subclass, you must implement the following methods.

    new This method is optional. The new method included in this class is simply inherited from
        "[Class::Container](https://www.chedong.com/phpMan.php/perldoc/Class%3A%3AContainer/markdown)". If you need something more complicated done in your new method you will
        need to override it in your subclass.

    get_info
        Takes three arguments: an absolute component path, a component root key, and a component
        root path. Returns a new [HTML::Mason::ComponentSource](https://www.chedong.com/phpMan.php/perldoc/HTML%3A%3AMason%3A%3AComponentSource/markdown) object.

    glob_path
        Takes two arguments: a path glob pattern, something like "/foo/*" or "/foo/*/bar", and a
        component root path. Returns a list of component paths for components which match this glob
        pattern.

        For example, the filesystem resolver simply appends this pattern to the component root path
        and calls the Perl "glob()" function to find matching files on the filesystem.

### Using a Resolver with [HTML::Mason::ApacheHandler](https://www.chedong.com/phpMan.php/perldoc/HTML%3A%3AMason%3A%3AApacheHandler/markdown)
    If you are creating a new resolver that you intend to use with the [HTML::Mason::ApacheHandler](https://www.chedong.com/phpMan.php/perldoc/HTML%3A%3AMason%3A%3AApacheHandler/markdown)
    module, then you must implement the following method as well.

    apache_request_to_comp_path ($r, @comp_root_array)
        This method, given an Apache object and a list of component root pairs, should return a
        component path or undef if none exists. This method is used by the
        [HTML::Mason::ApacheHandler](https://www.chedong.com/phpMan.php/perldoc/HTML%3A%3AMason%3A%3AApacheHandler/markdown) class to translate web requests into component paths. You can
        omit this method if your resolver subclass will never be used in conjunction with
        [HTML::Mason::ApacheHandler](https://www.chedong.com/phpMan.php/perldoc/HTML%3A%3AMason%3A%3AApacheHandler/markdown).