Lightweight attribute value lookup. More...

#include <LookupAttr.h>

Inheritance diagram for zypp::sat::LookupAttr:

Classes
class	Impl
	LookupAttr implememtation. More...
class	iterator
	Result iterator. More...
class	transformIterator
	TransformIterator returning an iterator value of type `_ResultT`. More...
Public Types
enum	Location { SOLV_ATTR = 0, REPO_ATTR = -1 }
	Specify the where to look for the attribule. More...
typedef MatchException	Exception
typedef unsigned	size_type
Public Member Functions
	LookupAttr ()
	Default ctor finds nothing.
	LookupAttr (SolvAttr attr_r, Location=SOLV_ATTR)
	Lookup SolvAttr in Pool (all repositories).
	LookupAttr (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 AttrMatcher &	attrMatcher () const
	The pattern to match.
void	setAttrMatcher (const AttrMatcher &matcher_r)
	Set the pattern to match.
void	resetAttrMatcher ()
	Reset the pattern to match.
Where to search.
bool	pool () const
	Wheter to search in Pool.
void	setPool (Location=SOLV_ATTR)
	Set search in Pool (all repositories).
Repository	repo () const
	Wheter to search in one Repository.
void	setRepo (Repository repo_r, Location=SOLV_ATTR)
	Set search in one Repository.
Solvable	solvable () const
	Wheter 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)
Private Attributes
RWCOW_pointer< Impl >	_pimpl
Related Functions
(Note that these are not member functions.)
std::ostream &	operator<< (std::ostream &str, const LookupAttr &obj)
std::ostream &	dumpOn (std::ostream &str, const LookupAttr &obj)

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( sat::SolvAttr::name );
    // Lookup all 'name' attributes within a sub-structure 'data':
    sat::LookupAttr q( sat::SolvAttr::name, sat::SolvAttr::data );
    // Lookup all 'name' attributes within any sub-structure:
    sat::LookupAttr q( 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( 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( sat::SolvAttr::repositoryAddedFileProvides );
  MIL << q << ": " << endl;
  for_( it, q.begin(), q.end() )
  {
    MIL << "    " << it << endl;
  }

Definition at line 112 of file LookupAttr.h.

Member Typedef Documentation

typedef MatchException zypp::sat::LookupAttr::Exception

Definition at line 115 of file LookupAttr.h.

typedef unsigned zypp::sat::LookupAttr::size_type

Definition at line 118 of file LookupAttr.h.

Member Enumeration Documentation

enum zypp::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 121 of file LookupAttr.h.

Constructor & Destructor Documentation

zypp::sat::LookupAttr::LookupAttr ( )

Default ctor finds nothing.

Definition at line 168 of file LookupAttr.cc.

zypp::sat::LookupAttr::LookupAttr	(	SolvAttr	attr_r,
		Location	loc_r = `SOLV_ATTR`
	)		`[explicit]`

Lookup SolvAttr in Pool (all repositories).

Definition at line 172 of file LookupAttr.cc.

zypp::sat::LookupAttr::LookupAttr	(	SolvAttr	attr_r,
		SolvAttr	parent_r,
		Location	loc_r = `SOLV_ATTR`
	)

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 175 of file LookupAttr.cc.

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

Lookup SolvAttr in oneRepository.

Definition at line 179 of file LookupAttr.cc.

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

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 182 of file LookupAttr.cc.

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

Lookup SolvAttr in one Solvable.

Definition at line 186 of file LookupAttr.cc.

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

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 189 of file LookupAttr.cc.

Member Function Documentation

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

Iterator to the begin of query results.

Definition at line 236 of file LookupAttr.cc.

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

Iterator behind the end of query results.

Definition at line 239 of file LookupAttr.cc.

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

Whether the query is empty.

Definition at line 242 of file LookupAttr.cc.

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

Ammount of results.

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

Definition at line 245 of file LookupAttr.cc.

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

The SolvAttr to search.

Definition at line 196 of file LookupAttr.cc.

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

Set the SolvAttr to search.

Definition at line 199 of file LookupAttr.cc.

const AttrMatcher & zypp::sat::LookupAttr::attrMatcher ( ) const

The pattern to match.

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

   LookupAttr q;
   if ( q.attrMatcher() )
     ...; // an AttrMatcher is set

Definition at line 202 of file LookupAttr.cc.

void zypp::sat::LookupAttr::setAttrMatcher ( const AttrMatcher & matcher_r )

Set the pattern to match.

Exceptions:

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

Definition at line 205 of file LookupAttr.cc.

void zypp::sat::LookupAttr::resetAttrMatcher ( )

Reset the pattern to match.

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

Wheter to search in Pool.

Definition at line 210 of file LookupAttr.cc.

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

Set search in Pool (all repositories).

Definition at line 213 of file LookupAttr.cc.

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

Wheter to search in one Repository.

Definition at line 216 of file LookupAttr.cc.

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

Set search in one Repository.

Definition at line 219 of file LookupAttr.cc.

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

Wheter to search in one Solvable.

Definition at line 222 of file LookupAttr.cc.

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

Set search in one Solvable.

Definition at line 225 of file LookupAttr.cc.

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

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

Definition at line 228 of file LookupAttr.cc.

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

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

Definition at line 231 of file LookupAttr.cc.

Friends And Related Function Documentation

std::ostream & operator<<	(	std::ostream &	str,
		const LookupAttr &	obj
	)		`[related]`

Stream output.

Definition at line 255 of file LookupAttr.cc.

std::ostream & dumpOn	(	std::ostream &	str,
		const LookupAttr &	obj
	)		`[related]`

Verbose stream output including the query result.

Definition at line 272 of file LookupAttr.cc.

Member Data Documentation

RWCOW_pointer<Impl> zypp::sat::LookupAttr::_pimpl [private]

Definition at line 230 of file LookupAttr.h.

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

zypp/sat/LookupAttr.h
zypp/sat/LookupAttr.cc

Classes

Public Types

Public Member Functions

Private Attributes

Related Functions

Detailed Description

Member Typedef Documentation

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation