Lightweight attribute value lookup. More...

#include <zypp/ng/sat/lookupattr.h>

Inheritance diagram for zyppng::sat::LookupAttr:

Classes
class	TransformIterator
	TransformIterator returning an iterator vaue of type `TResult`. More...
class	iterator
	Result iterator. More...
class	Impl
	LookupAttr implementation. More...

Public Types
enum	Location { SOLV_ATTR = 0 , REPO_ATTR = -1 }
	Specify the where to look for the attribule. More...
using	Exception = MatchException
using	size_type = unsigned int

Public Member Functions
	LookupAttr ()
	Default ctor finds nothing.
	LookupAttr (const LookupAttr &)=default
	LookupAttr (LookupAttr &&) noexcept=default
LookupAttr &	operator= (const LookupAttr &)=default
LookupAttr &	operator= (LookupAttr &&) noexcept=default
	LookupAttr (Pool &pool, SolvAttr attr_r, Location=SOLV_ATTR)
	Lookup SolvAttr in Pool (all repositories).
	LookupAttr (Pool &pool, SolvAttr attr_r, SolvAttr parent_r, Location=SOLV_ATTR)
	LookupAttr (SolvAttr attr_r, Repository repo_r, Location=SOLV_ATTR)
	Lookup SolvAttr in oneRepository.
	LookupAttr (SolvAttr attr_r, SolvAttr parent_r, Repository repo_r, Location=SOLV_ATTR)
	LookupAttr (SolvAttr attr_r, Solvable solv_r)
	Lookup SolvAttr in one Solvable.
	LookupAttr (SolvAttr attr_r, SolvAttr parent_r, Solvable solv_r)
Search result.
iterator	begin () const
	Iterator to the begin of query results.
iterator	end () const
	Iterator behind the end of query results.
bool	empty () const
	Whether the query is empty.
size_type	size () const
	Ammount of results.
What to search.
SolvAttr	attr () const
	The SolvAttr to search.
void	setAttr (SolvAttr attr_r)
	Set the SolvAttr to search.
Restrict attributes to match a pattern.
const StrMatcher &	strMatcher () const
	The pattern to match.
void	setStrMatcher (const StrMatcher &matcher_r)
	Set the pattern to match.
void	resetStrMatcher ()
	Reset the pattern to match.

Where to search.
zypp::RWCOW_pointer< Impl >	_pimpl
bool	pool () const
	Whether to search in Pool.
void	setPool (Location=SOLV_ATTR)
	Set search in Pool (all repositories).
Repository	repo () const
	Whether to search in one Repository.
void	setRepo (Repository repo_r, Location=SOLV_ATTR)
	Set search in one Repository.
Solvable	solvable () const
	Whether to search in one Solvable.
void	setSolvable (Solvable solv_r)
	Set search in one Solvable.
SolvAttr	parent () const
	Whether to search within a sub-structure (SolvAttr::noAttr if not).
void	setParent (SolvAttr attr_r)
	Set search within a sub-structure (SolvAttr::noAttr for none).

Detailed Description

Lightweight attribute value lookup.

Search for an attribute in Pool, one Repository or one Solvable. LookupAttr builds the query, LookupAttr::iterator iterates over the result.

Per default LookupAttr looks for attributes associated with a Solvable. But you may also pass REPO_ATTR as Location argument, to lookup attributes associated with the Repository (e.g. DeltaRpm information).

For convenience

See also: LookupRepoAttr.

Modifying the query will not affect any running iterator.

Use SolvAttr::allAttr to search all attributes.

To search for attributes located in a sub-structure (flexarray) you also have to pass the sub-structures attribute as parent. Passing SolvAttr::allAttr a parent will lookup the attribute in any sub-structure. Few attributes are known to have a parent (

See also: SolvAttr::parent). Setting those attributes will automatically initialize their parent value.

// Lookup all 'name' attributes:
sat::LookupAttr q( pool, sat::SolvAttr::name );
// Lookup all 'name' attributes within a sub-structure 'data':
sat::LookupAttr q( pool, sat::SolvAttr::name, sat::SolvAttr::data );
// Lookup all 'name' attributes within any sub-structure:
sat::LookupAttr q( pool, sat::SolvAttr::name, sat::SolvAttr::allAttr );

// look for all attributes of one solvable
void ditest( sat::Solvable slv_r )
{
  sat::LookupAttr q( sat::SolvAttr::allAttr, slv_r );
  MIL << q << ": " << endl;
  for_( it, q.begin(), q.end() )
  {
    MIL << "    " << it.inSolvAttr() << " = " << it.asString() << endl;
  }
}

// look for an attribute in the pool.
sat::LookupAttr q( pool, sat::SolvAttr("susetags:datadir") );
MIL << q << ": " << endl;
for_( it, q.begin(), q.end() )
{
  MIL << "    " << it << endl;
}

// look for a repo attribute in the pool.
sat::LookupRepoAttr q( pool, sat::SolvAttr::repositoryAddedFileProvides );
MIL << q << ": " << endl;
for_( it, q.begin(), q.end() )
{
  MIL << "    " << it << endl;
}

Definition at line 111 of file lookupattr.h.

Member Typedef Documentation

◆ Exception

using zyppng::sat::LookupAttr::Exception = MatchException

Definition at line 114 of file lookupattr.h.

◆ size_type

using zyppng::sat::LookupAttr::size_type = unsigned int

Definition at line 117 of file lookupattr.h.

Member Enumeration Documentation

◆ Location

enum zyppng::sat::LookupAttr::Location

Specify the where to look for the attribule.

Enumerator
SOLV_ATTR	Search for solvable attributes (default).
REPO_ATTR	Search for repository attributes.

Definition at line 120 of file lookupattr.h.

Constructor & Destructor Documentation

◆ LookupAttr() [1/9]

zyppng::sat::LookupAttr::LookupAttr ( )

Default ctor finds nothing.

CLASS NAME : LookupAttr.

Definition at line 165 of file lookupattr.cc.

◆ LookupAttr() [2/9]

zyppng::sat::LookupAttr::LookupAttr ( const LookupAttr & )

default

◆ LookupAttr() [3/9]

zyppng::sat::LookupAttr::LookupAttr ( LookupAttr && )

defaultnoexcept

◆ LookupAttr() [4/9]

zyppng::sat::LookupAttr::LookupAttr	(	Pool &	pool,
		SolvAttr	attr_r,
		Location	loc_r = SOLV_ATTR )

explicit

Lookup SolvAttr in Pool (all repositories).

Definition at line 169 of file lookupattr.cc.

◆ LookupAttr() [5/9]

zyppng::sat::LookupAttr::LookupAttr	(	Pool &	pool,
		SolvAttr	attr_r,
		SolvAttr	parent_r,
		Location	loc_r = SOLV_ATTR )

Definition at line 173 of file lookupattr.cc.

◆ LookupAttr() [6/9]

zyppng::sat::LookupAttr::LookupAttr	(	SolvAttr	attr_r,
		Repository	repo_r,
		Location	loc_r = SOLV_ATTR )

Lookup SolvAttr in oneRepository.

Definition at line 177 of file lookupattr.cc.

◆ LookupAttr() [7/9]

zyppng::sat::LookupAttr::LookupAttr	(	SolvAttr	attr_r,
		SolvAttr	parent_r,
		Repository	repo_r,
		Location	loc_r = SOLV_ATTR )

Definition at line 183 of file lookupattr.cc.

◆ LookupAttr() [8/9]

zyppng::sat::LookupAttr::LookupAttr	(	SolvAttr	attr_r,
		Solvable	solv_r )

Lookup SolvAttr in one Solvable.

Definition at line 190 of file lookupattr.cc.

◆ LookupAttr() [9/9]

zyppng::sat::LookupAttr::LookupAttr	(	SolvAttr	attr_r,
		SolvAttr	parent_r,
		Solvable	solv_r )

Definition at line 196 of file lookupattr.cc.

Member Function Documentation

◆ operator=() [1/2]

LookupAttr & zyppng::sat::LookupAttr::operator= ( const LookupAttr & )

default

◆ operator=() [2/2]

LookupAttr & zyppng::sat::LookupAttr::operator= ( LookupAttr && )

defaultnoexcept

◆ begin()

LookupAttr::iterator zyppng::sat::LookupAttr::begin ( ) const

Iterator to the begin of query results.

Definition at line 240 of file lookupattr.cc.

◆ end()

LookupAttr::iterator zyppng::sat::LookupAttr::end ( ) const

Iterator behind the end of query results.

Definition at line 243 of file lookupattr.cc.

◆ empty()

bool zyppng::sat::LookupAttr::empty ( ) const

Whether the query is empty.

Definition at line 246 of file lookupattr.cc.

◆ size()

LookupAttr::size_type zyppng::sat::LookupAttr::size ( ) const

Ammount of results.

Note: This is not a cheap call. It runs the query.

Definition at line 249 of file lookupattr.cc.

◆ attr()

SolvAttr zyppng::sat::LookupAttr::attr ( ) const

The SolvAttr to search.

Definition at line 204 of file lookupattr.cc.

◆ setAttr()

void zyppng::sat::LookupAttr::setAttr ( SolvAttr attr_r )

Set the SolvAttr to search.

Definition at line 207 of file lookupattr.cc.

◆ strMatcher()

const StrMatcher & zyppng::sat::LookupAttr::strMatcher ( ) const

The pattern to match.

You can also evaluate StrMatcher in a boolean context, in order to test whether an StrMatcher is set:

LookupAttr q;
if ( q.strMatcher() )
  ...; // an StrMatcher is set

Definition at line 210 of file lookupattr.cc.

◆ setStrMatcher()

void zyppng::sat::LookupAttr::setStrMatcher ( const StrMatcher & matcher_r )

Set the pattern to match.

Exceptions

MatchException Any of the exceptions thrown by StrMatcher::compile.

Definition at line 213 of file lookupattr.cc.

◆ resetStrMatcher()

void zyppng::sat::LookupAttr::resetStrMatcher ( )

Reset the pattern to match.

◆ pool()

bool zyppng::sat::LookupAttr::pool ( ) const

Whether to search in Pool.

Definition at line 216 of file lookupattr.cc.

◆ setPool()

void zyppng::sat::LookupAttr::setPool ( Location loc_r = SOLV_ATTR )

Set search in Pool (all repositories).

Definition at line 219 of file lookupattr.cc.

◆ repo()

Repository zyppng::sat::LookupAttr::repo ( ) const

Whether to search in one Repository.

Definition at line 222 of file lookupattr.cc.

◆ setRepo()

void zyppng::sat::LookupAttr::setRepo	(	Repository	repo_r,
		Location	loc_r = SOLV_ATTR )

Set search in one Repository.

Definition at line 225 of file lookupattr.cc.

◆ solvable()

Solvable zyppng::sat::LookupAttr::solvable ( ) const

Whether to search in one Solvable.

Definition at line 228 of file lookupattr.cc.

◆ setSolvable()

void zyppng::sat::LookupAttr::setSolvable ( Solvable solv_r )

Set search in one Solvable.

Definition at line 231 of file lookupattr.cc.

◆ parent()

SolvAttr zyppng::sat::LookupAttr::parent ( ) const

Whether to search within a sub-structure (SolvAttr::noAttr if not).

Definition at line 234 of file lookupattr.cc.

◆ setParent()

void zyppng::sat::LookupAttr::setParent ( SolvAttr attr_r )

Set search within a sub-structure (SolvAttr::noAttr for none).

Definition at line 237 of file lookupattr.cc.

Member Data Documentation

◆ _pimpl

zypp::RWCOW_pointer<Impl> zyppng::sat::LookupAttr::_pimpl

private

Definition at line 236 of file lookupattr.h.

The documentation for this class was generated from the following files:

zypp/ng/sat/lookupattr.h
zypp/ng/sat/lookupattr.cc

Classes

Public Types

Public Member Functions

Where to search.