..
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=============================================
Comps, or the Distribution Compose Metadata
=============================================
.. module:: dnf.comps
.. class:: Comps
An object of this class can merge comps information from arbitrary repositories. It typically is instantiated from :class:`dnf.Base` and covers all the available repositories.
The ``*_by_pattern`` methods all take a `pattern` and an optional `case_sensitive` parameter. The pattern is matched against names and IDs of objects in the domain (groups, categories, environments), the globbing characters in `pattern` retain their usual expanding meaning. If `case_sensitive` is ``True``, matching is done in a case-sensitive manner.
.. attribute:: categories
List of all contained :class:`dnf.comps.Category` objects.
.. attribute:: environments
List of all contained :class:`dnf.comps.Environment` objects ordered by `display_order` tag defined in comps.xml file.
.. attribute:: groups
List of all contained :class:`dnf.comps.Group` objects ordered by `display_order` tag defined in comps.xml file.
.. method:: category_by_pattern(pattern, case_sensitive=False)
Returns a :class:`dnf.comps.Category` object matching `pattern`, or ``None``.
.. method:: categories_by_pattern(pattern, case_sensitive=False)
Return an iterable of :class:`dnf.comps.Category` objects matching `pattern`.
.. method:: categories_iter
Return iterator over all contained :class:`dnf.comps.Category` objects.
.. method:: environment_by_pattern(pattern, case_sensitive=False)
Return a :class:`dnf.comps.Environment` object matching `pattern`, or ``None``.
.. method:: environments_by_pattern(pattern, case_sensitive=False)
Return an iterable of :class:`dnf.comps.Environment` objects matching `pattern` ordered by `display_order` tag defined in comps.xml file.
.. attribute:: environments_iter
Return iterator over all contained :class:`dnf.comps.Environment` objects in order they appear in comps.xml file.
.. method:: group_by_pattern(pattern, case_sensitive=False)
Return a :class:`dnf.comps.Group` object matching `pattern`, or ``None``.
.. method:: groups_by_pattern(pattern, case_sensitive=False)
Return an iterable of :class:`dnf.comps.Group` objects matching `pattern` ordered by `display_order` tag defined in comps.xml file.
.. attribute:: groups_iter
Return iterator over all contained :class:`dnf.comps.Group` objects in order they appear in comps.xml file.
.. class:: Package
Represents comps package data.
.. NOTE::
Should not be confused with :class:`dnf.package.Package` which represents a package contained in a :class:`~.Sack`. There is no guarantee whether the comps package has a corresponding real sack package, i.e. there can be no package of given name in the sack, one such package, or more than one. For this reason two separate types are introduced.
.. attribute:: name
Name of the package.
.. attribute:: option_type
The type of inclusion of this particular package in its group. Must be one of the :data:`inclusion types <dnf.comps.CONDITIONAL>`.
.. class:: Category
.. attribute:: id
Unique identifier of the category.
.. attribute:: name
Name of the category.
.. attribute:: ui_name
The name of the category translated to the language given by the current locale.
.. attribute:: ui_description
The description of the category translated to the language given by the current locale.
.. class:: Environment
Has the same set of attributes as :class:`dnf.comps.Category`.
.. class:: Group
Has the same set of attributes as :class:`dnf.comps.Category`.
.. method:: packages_iter()
Return iterator over all :class:`packages <.Package>` belonging in this group.
Following types of inclusions of objects in their parent objects are defined:
.. data:: CONDITIONAL
.. data:: DEFAULT
.. data:: MANDATORY
.. data:: OPTIONAL