-LIBSOLV-BINDINGS(3)
+Libsolv-Bindings(3)
===================
:man manual: LIBSOLV
:man source: libsolv
-NAME
+Name
----
libsolv-bindings - access libsolv from perl/python/ruby
-DESCRIPTION
+Description
-----------
Libsolv's language bindings offer an abstract, object orientated interface
to the library. The supported languages are currently perl, python, and ruby.
order).
-PERL SPECIFICS
+Perl Specifics
--------------
Libsolv's perl bindings can be loaded with the following statement:
$pool->{appdata} = 42;
printf "appdata is %d\n", $pool->{appdata};
-An special exception to this are iterator objects, they are encapsulated as
+A special exception to this are iterator objects, they are encapsulated as
tied arrays so that it is possible to iterate with a for() statement:
my $iter = $pool->solvables_iter();
for my $solvable (@$iter) { ... };
-As a downside of this approach, iterator objects can have no attributes.
+As a downside of this approach, iterator objects cannot have attributes.
If an array needs to be passed to a method it is usually done by reference,
if a method returns an array it returns it on the stack:
my @problems = $solver->solve(\@jobs);
-Due to a bug in swig, stringification does not work for libsolv's object.
-Instead you have to call the object's str() method.
+Due to a bug in swig, stringification does not work for libsolv's objects.
+Instead, you have to call the object's str() method.
print $dep->str() . "\n";
$pool->set_flag($solv::Pool::POOL_FLAG_OBSOLETEUSESCOLORS, 1);
-PYTHON SPECIFICS
+Python Specifics
----------------
The python bindings can be loaded with:
for solvable in pool.solvables_iter():
-Arrays are passed an returned as list objects:
+Arrays are passed and returned as list objects:
jobs = []
problems = solver.solve(jobs)
pool.set_flag(solv.Pool.POOL_FLAG_OBSOLETEUSESCOLORS, 1);
-RUBY SPECIFICS
+Ruby Specifics
--------------
The ruby bindings can be loaded with:
for solvable in pool.solvables_iter() do ...
-Arrays are passed an returned as array objects:
+Arrays are passed and returned as array objects:
jobs = []
problems = solver.solve(jobs)
puts "empty repo" if repo.isempty?
-THE SOLV CLASS
+The Solv Class
--------------
This is the main namespace of the library, you cannot create objects of this
type but it contains some useful constants.
Relational flag constants, the first three can be or-ed together
*REL_LT*::
- the ``less than'' bit
+the ``less than'' bit
*REL_EQ*::
- the ``equals to'' bit
+the ``equals to'' bit
*REL_GT*::
- the ``greater then'' bit
+the ``greater then'' bit
*REL_ARCH*::
- used for relations that describe an extra architecture filter, the
- version part of the relation is interpreted as architecture.
+used for relations that describe an extra architecture filter, the
+version part of the relation is interpreted as architecture.
Special Solvable Ids
*SOLVID_META*::
- Access the meta section of a repository or repodata area. This is
- like an extra Solvable that has the Id SOLVID_META.
+Access the meta section of a repository or repodata area. This is
+like an extra Solvable that has the Id SOLVID_META.
*SOLVID_POS*::
- Use the data position stored inside of the pool instead of accessing
- some solvable by Id. The bindings have the Datapos objects as an
- abstraction mechanism, so you do not need this constant.
+Use the data position stored inside of the pool instead of accessing
+some solvable by Id. The bindings have the Datapos objects as an
+abstraction mechanism, so you do not need this constant.
Constant string Ids
*ID_NULL*::
- Always zero
+Always zero
*ID_EMPTY*::
- Always one, describes the empty string
+Always one, describes the empty string
*SOLVABLE_NAME*::
- The keyname Id of the name of the solvable.
+The keyname Id of the name of the solvable.
*...*::
- see the libsolv-constantids manpage for a list of fixed Ids.
+see the libsolv-constantids manpage for a list of fixed Ids.
-THE POOL CLASS
+The Pool Class
--------------
The pool is libsolv's central resource manager. A pool consists of Solvables,
Repositories, Dependencies, each indexed by Ids.
pool = solv.Pool()
pool = Solv::Pool.new()
-Create a new pool instance. In most cases you just need
-one pool.
+Create a new pool instance. In most cases you just need one pool.
+Note that the returned object "owns" the pool, i.e. if the object is
+freed, the pool is also freed. You can use the disown method to
+break this ownership relation.
=== ATTRIBUTES ===
Define which repository contains all the installed packages.
+ const char *errstr; /* read only */
+ my $err = $pool->{errstr};
+ err = pool.errstr
+ err = pool.errstr
+
+Return the last error string that was stored in the pool.
+
=== CONSTANTS ===
*POOL_FLAG_PROMOTEEPOCH*::
- Promote the epoch of the providing dependency to the requesting
- dependency if it does not contain an epoch. Used at some time
- in old rpm versions, modern systems should never need this.
+Promote the epoch of the providing dependency to the requesting
+dependency if it does not contain an epoch. Used at some time
+in old rpm versions, modern systems should never need this.
*POOL_FLAG_FORBIDSELFCONFLICTS*::
- Disallow the installation of packages that conflict with themselves.
- Debian always allows self-conflicting packages, rpm used to forbid
- them but switched to also allowing them recently.
+Disallow the installation of packages that conflict with themselves.
+Debian always allows self-conflicting packages, rpm used to forbid
+them but switched to also allowing them recently.
*POOL_FLAG_OBSOLETEUSESPROVIDES*::
- Make obsolete type dependency match against provides instead of
- just the name and version of packages. Very old versions of rpm
- used the name/version, then it got switched to provides and later
- switched back again to just name/version.
+Make obsolete type dependency match against provides instead of
+just the name and version of packages. Very old versions of rpm
+used the name/version, then it got switched to provides and later
+switched back again to just name/version.
*POOL_FLAG_IMPLICITOBSOLETEUSESPROVIDES*::
- An implicit obsoletes is the internal mechanism to remove the
- old package on an update. The default is to remove all packages
- with the same name, rpm-5 switched to also removing packages
- providing the same name.
+An implicit obsoletes is the internal mechanism to remove the
+old package on an update. The default is to remove all packages
+with the same name, rpm-5 switched to also removing packages
+providing the same name.
*POOL_FLAG_OBSOLETEUSESCOLORS*::
- Rpm's multilib implementation (used in RedHat and Fedora)
- distinguishes between 32bit and 64bit packages (the terminology
- is that they have a different color). If obsolteusescolors is
- set, packages with different colors will not obsolete each other.
+Rpm's multilib implementation (used in RedHat and Fedora)
+distinguishes between 32bit and 64bit packages (the terminology
+is that they have a different color). If obsoleteusescolors is
+set, packages with different colors will not obsolete each other.
*POOL_FLAG_IMPLICITOBSOLETEUSESCOLORS*::
- Same as POOL_FLAG_OBSOLETEUSESCOLORS, but used to find out if
- packages of the same name can be installed in parallel. For
- current Fedora systems, POOL_FLAG_OBSOLETEUSESCOLORS should be
- false and POOL_FLAG_IMPLICITOBSOLETEUSESCOLORS should be true
- (this is the default if FEDORA is defined when libsolv is
- compiled).
+Same as POOL_FLAG_OBSOLETEUSESCOLORS, but used to find out if
+packages of the same name can be installed in parallel. For
+current Fedora systems, POOL_FLAG_OBSOLETEUSESCOLORS should be
+false and POOL_FLAG_IMPLICITOBSOLETEUSESCOLORS should be true
+(this is the default if FEDORA is defined when libsolv is compiled).
*POOL_FLAG_NOINSTALLEDOBSOLETES*::
- New versions of rpm consider the obsoletes of installed packages
- when checking for dependency, thus you may not install a package
- that is obsoleted by some other installed package, unless you
- also erase the other package.
+New versions of rpm consider the obsoletes of installed packages
+when checking for dependency, thus you may not install a package
+that is obsoleted by some other installed package, unless you
+also erase the other package.
*POOL_FLAG_HAVEDISTEPOCH*::
- Mandriva added a new field called distepoch that gets checked in
- version comparison if the epoch/version/release of two packages
- are the same.
+Mandriva added a new field called distepoch that gets checked in
+version comparison if the epoch/version/release of two packages
+are the same.
*POOL_FLAG_NOOBSOLETESMULTIVERSION*::
- If a package is installed in multiversionmode, rpm used to ignore
- both the implicit obsoletes and the obsolete dependency of a
- package. This was changed to ignoring just the implicit obsoletes,
- thus you may install multiple versions of the same name, but
- obsoleted packages still get removed.
+If a package is installed in multiversionmode, rpm used to ignore
+both the implicit obsoletes and the obsolete dependency of a
+package. This was changed to ignoring just the implicit obsoletes,
+thus you may install multiple versions of the same name, but
+obsoleted packages still get removed.
*POOL_FLAG_ADDFILEPROVIDESFILTERED*::
- Make the addfileprovides method only add files from the standard
- locations (i.e. the ``bin'' and ``etc'' directories). This is
- useful if you have only few packages that use non-standard file
- dependencies, but you still wand the fast speed that addfileprovides()
- generates.
+Make the addfileprovides method only add files from the standard
+locations (i.e. the ``bin'' and ``etc'' directories). This is
+useful if you have only few packages that use non-standard file
+dependencies, but you still wand the fast speed that addfileprovides()
+generates.
=== METHODS ===
pool.free()
pool.free()
-Free a pool. This is currently done with a method instead of relying on
-reference counting or garbage collection because it's hard to track every
-reference to a pool.
+Force a free of the pool. After this call, you must not access any object
+that still references the pool.
+
+ void disown()
+ $pool->disown();
+ pool.disown()
+ pool.disown()
+
+Break the ownership relation betwen the binding object and the pool. After
+this call, the pool will not get freed even if the object goes out of
+scope. This also means that you must manually call the free method to free
+the pool data.
void setdebuglevel(int level)
$pool->setdebuglevel($level);
Lookup functions. Return the data element stored in the specified solvable.
You should probably use the methods of the Solvable class instead.
- Dataiterator Dataiterator(Id solvid, Id keyname, const char *match, int flags)
+ Dataiterator Dataiterator(Id keyname, const char *match = 0, int flags = 0)
+ my $di = $pool->Dataiterator($keyname, $match, $flags);
+ di = pool.Dataiterator(keyname, match, flags)
+ di = pool.Dataiterator(keyname, match, flags)
+
+ Dataiterator Dataiterator_solvid(Id solvid, Id keyname, const char *match = 0, int flags = 0)
my $di = $pool->Dataiterator($solvid, $keyname, $match, $flags);
di = pool.Dataiterator(solvid, keyname, match, flags)
di = pool.Dataiterator(solvid, keyname, match, flags)
for d in di
Iterate over the matching data elements. See the Dataiterator class for more
-information.
+information. The Dataiterator method iterates over all solvables in the pool,
+whereas the Dataiterator_solvid only iterates over the specified solvable.
=== ID METHODS ===
result is the correct ``name relation evr'' string.
-THE DEPENDENCY CLASS
+The Dependency Class
--------------------
The dependency class is an object orientated way to work with strings and
dependencies. Internally, dependencies are represented as Ids, i.e. simple
ids.
-THE REPOSITORY CLASS
+The Repository Class
--------------------
A Repository describes a group of packages, normally coming from the same
source. Repositories are created by the Pool's add_repo() method.
=== CONSTANTS ===
*REPO_REUSE_REPODATA*::
- Reuse the last repository data area (``repodata'') instead of creating a new
- one.
+Reuse the last repository data area (``repodata'') instead of creating a
+new one.
*REPO_NO_INTERNALIZE*::
- Do not internalize the added repository data. This is useful if
- you plan to add more data because internalization is a costly
- operation.
+Do not internalize the added repository data. This is useful if
+you plan to add more data because internalization is a costly
+operation.
*REPO_LOCALPOOL*::
- Use the repodata's pool for Id storage instead of the global pool. Useful
- if you don't want to pollute the global pool with many unneeded ids, like
- when storing the filelist.
+Use the repodata's pool for Id storage instead of the global pool. Useful
+if you don't want to pollute the global pool with many unneeded ids, like
+when storing the filelist.
*REPO_USE_LOADING*::
- Use the repodata that is currently being loaded instead of creating a new one.
- This only makes sense if used in a load callback.
+Use the repodata that is currently being loaded instead of creating a new
+one. This only makes sense if used in a load callback.
*REPO_EXTEND_SOLVABLES*::
- Do not create new solvables for the new data, but match existing solvables and
- add the data to them. Repository metadata is often split into multiple parts,
- with one primary file describing all packages and other parts holding
- information that is normally not needed, like the changelog.
+Do not create new solvables for the new data, but match existing solvables
+and add the data to them. Repository metadata is often split into multiple
+parts, with one primary file describing all packages and other parts
+holding information that is normally not needed, like the changelog.
*REPO_USE_ROOTDIR*::
- Prepend the pool's rootdir to the path when doing file operations.
+Prepend the pool's rootdir to the path when doing file operations.
*REPO_NO_LOCATION*::
- Do not add a location element to the solvables. Useful if the solvables are
- not in the final position, so you can add the correct location later in your code.
+Do not add a location element to the solvables. Useful if the solvables
+are not in the final position, so you can add the correct location later
+in your code.
*SOLV_ADD_NO_STUBS*::
- Do not create stubs for repository parts that can be downloaded on demand.
+Do not create stubs for repository parts that can be downloaded on demand.
*SUSETAGS_RECORD_SHARES*::
- This is specific to the add_susetags() method. Susetags allows to refer to already
- read packages to save disk space. If this data sharing needs to work over multiple
- calls to add_susetags, you need to specify this flag so that the share information
- is made available to subsequent calls.
+This is specific to the add_susetags() method. Susetags allows to refer to
+already read packages to save disk space. If this data sharing needs to
+work over multiple calls to add_susetags, you need to specify this flag so
+that the share information is made available to subsequent calls.
=== METHODS ===
Create a Selection consisting of all packages in the repository.
- Dataiterator Dataiterator(Id p, Id key, const char *match, int flags)
- my $di = $repo->Dataiterator($solvid, $keyname, $match, $flags);
- di = repo.Dataiterator(solvid, keyname, match, flags)
- di = repo.Dataiterator(solvid, keyname, match, flags)
+ Dataiterator Dataiterator(Id key, const char *match = 0, int flags = 0)
+ my $di = $repo->Dataiterator($keyname, $match, $flags);
+ di = repo.Dataiterator(keyname, match, flags)
+ di = repo.Dataiterator(keyname, match, flags)
+
+ Dataiterator Dataiterator_meta(Id key, const char *match = 0, int flags = 0)
+ my $di = $repo->Dataiterator_meta($keyname, $match, $flags);
+ di = repo.Dataiterator_meta(keyname, match, flags)
+ di = repo.Dataiterator_meta(keyname, match, flags)
for my $d (@$di)
for d in di:
for d in di
Iterate over the matching data elements in this repository. See the
-Dataiterator class for more information.
+Dataiterator class for more information. The Dataiterator() method
+iterates over all solvables in a repository, whereas the Dataiterator_meta
+method only iterates over the repository's meta data.
<stringification>
my $str = $repo->str;
the Solvable class for more information.
bool add_solv(const char *name, int flags = 0)
- $repo->add_solv($name, $flags);
- repo.add_solv(name, flags)
- repo.add_solv(name, flags)
+ $repo->add_solv($name);
+ repo.add_solv(name)
+ repo.add_solv(name)
bool add_solv(FILE *fp, int flags = 0)
- $repo->add_solv($fp, $flags);
- repo.add_solv(fp, flags)
- repo.add_solv(fp, flags)
+ $repo->add_solv($fp);
+ repo.add_solv(fp)
+ repo.add_solv(fp)
Read a ``solv'' file and add its contents to the repository. These files can be
written with the write() method and are normally used as fast cache for
repository metadata.
bool add_rpmdb(int flags = 0)
- $repo->add_rpmdb($flags);
- repo.add_rpmdb(flags)
- repo.add_rpmdb(flags)
+ $repo->add_rpmdb();
+ repo.add_rpmdb()
+ repo.add_rpmdb()
bool add_rpmdb_reffp(FILE *reffp, int flags = 0)
- $repo->add_rpmdb_reffp($reffp, $flags);
- repo.add_rpmdb_reffp($reffp, flags)
- repo.add_rpmdb_reffp($reffp, flags)
+ $repo->add_rpmdb_reffp($reffp);
+ repo.add_rpmdb_reffp(reffp)
+ repo.add_rpmdb_reffp(reffp)
Add the contents of the rpm database to the repository. If a solv file
containing an old version of the database is available, it can be passed as
reffp to speed up reading.
- bool add_rpm(const char *name, int flags = 0)
- $repo->add_rpm($name, $flags);
- repo.add_rpm(name, flags)
- repo.add_rpm(name, flags)
+ Solvable add_rpm(const char *filename, int flags = 0)
+ my $solvable = $repo->add_rpm($filename);
+ solvable = repo.add_rpm(filename)
+ solvable = repo.add_rpm(filename)
Add the metadata of a single rpm package to the repository.
newer rpm versions also allow to store the pubkeys in some directory instead
of the rpm database.
- bool add_pubkey(const char *keyfile, int flags = 0)
- $repo->add_pubkey($keyfile);
- repo.add_pubkey($keyfile)
- repo.add_pubkey($keyfile)
+ Solvable add_pubkey(const char *keyfile, int flags = 0)
+ my $solvable = $repo->add_pubkey($keyfile);
+ solvable = repo.add_pubkey(keyfile)
+ solvable = repo.add_pubkey(keyfile)
Add a pubkey from a file to the repository.
bool add_rpmmd(FILE *fp, const char *language, int flags = 0)
- $repo->add_rpmmd($fp, $language);
- repo.add_rpmmd(fp, language)
- repo.add_rpmmd(fp, language)
+ $repo->add_rpmmd($fp, undef);
+ repo.add_rpmmd(fp, None)
+ repo.add_rpmmd(fp, nil)
Add metadata stored in the "rpm-md" format (i.e. from files in the ``repodata''
directory) to a repository. Supported files are "primary", "filelists",
Add the contents of the debian repository metadata (the "packages" file)
to the repository.
- bool add_deb(const char *filename, int flags = 0)
- $repo->add_deb($filename);
- repo.add_deb(filename)
- repo.add_deb(filename)
+ Solvable add_deb(const char *filename, int flags = 0)
+ my $solvable = $repo->add_deb($filename);
+ solvable = repo.add_deb(filename)
+ solvable = repo.add_deb(filename)
Add the metadata of a single deb package to the repository.
bool add_mdk(FILE *fp, int flags = 0)
$repo->add_mdk($fp);
- repo.add_mdk($fp)
- repo.add_mdk($fp)
+ repo.add_mdk(fp)
+ repo.add_mdk(fp)
Add the contents of the mageia/mandriva repository metadata (the
"synthesis.hdlist" file) to the repository.
bool add_mdk_info(FILE *fp, int flags = 0)
$repo->add_mdk($fp);
- repo.add_mdk($fp)
- repo.add_mdk($fp)
+ repo.add_mdk(fp)
+ repo.add_mdk(fp)
Extend the packages from the synthesis file with the info.xml and files.xml
data. Do not forget to specify *REPO_EXTEND_SOLVABLES*.
bool add_arch_repo(FILE *fp, int flags = 0)
$repo->add_arch_repo($fp);
- repo.add_arch_repo($fp)
- repo.add_arch_repo($fp)
+ repo.add_arch_repo(fp)
+ repo.add_arch_repo(fp)
Add the contents of the archlinux repository metadata (the ".db.tar" file) to
the repository.
bool add_arch_local(const char *dir, int flags = 0)
$repo->add_arch_local($dir);
- repo.add_arch_local($dir)
- repo.add_arch_local($dir)
+ repo.add_arch_local(dir)
+ repo.add_arch_local(dir)
Add the contents of the archlinux installed package database to the repository.
The _dir_ parameter is usually set to "/var/lib/pacman/local".
is usually "/etc/products.d".
-THE SOLVABLE CLASS
+The Solvable Class
------------------
A solvable describes all the information of one package. Each solvable
belongs to one repository, it can be added and filled manually but in
media number for multi-part repositories (e.g. repositories
spawning multiple DVDs).
+ Dataiterator Dataiterator(Id keyname, const char *match = 0, int flags = 0)
+ my $di = $solvable->Dataiterator($keyname, $match, $flags);
+ di = solvable.Dataiterator(keyname, match, flags)
+ di = solvable.Dataiterator(keyname, match, flags)
+
+ for my $d (@$di)
+ for d in di:
+ for d in di
+
+Iterate over the matching data elements. See the Dataiterator class for more
+information.
+
void add_deparray(Id keyname, DepId dep, Id marker = -1);
$solvable->add_deparray($keyname, $dep);
solvable.add_deparray(keyname, dep)
Add a new dependency to the attributes stored in keyname.
+ void unset(Id keyname);
+ $solvable->unset($keyname);
+ solvable.unset(keyname)
+ solvable.unset(keyname)
+
+Delete data stored for the specific keyname.
+
bool installable();
$solvable->installable()
solvable.installable()
Return true if the solvable is installed on the system.
+ bool identical(Solvable *other)
+ $solvable->identical($other)
+ $solvable.identical(other)
+ $solvable.identical?(other)
+
+Return true if the two solvables are identical.
+
+ int evrcmp(Solvable *other)
+ $solvable->evrcmp(other)
+ $solvable.evrcmp(other)
+ $solvable.evrcmp(other)
+
+Returns -1 if the epoch/version/release of the solvable is less then the
+one from the other solvable, 1 if it is greater, and 0 if they are equal.
+Note that "equal" does not mean that the evr is identical.
+
Selection Selection(int setflags = 0)
my $sel = $solvable->Selection();
sel = solvable.Selection()
ids.
-THE DATAITERATOR CLASS
+The Dataiterator Class
----------------------
Dataiterators can be used to do complex string searches or
to iterate over arrays. They can be created via the
=== CONSTANTS ===
*SEARCH_STRING*::
- Return a match if the search string matches the value.
+Return a match if the search string matches the value.
*SEARCH_STRINGSTART*::
- Return a match if the value starts with the search string.
+Return a match if the value starts with the search string.
*SEARCH_STRINGEND*::
- Return a match if the value ends with the search string.
+Return a match if the value ends with the search string.
*SEARCH_SUBSTRING*::
- Return a match if the search string can be matched somewhere
- in the value.
+Return a match if the search string can be matched somewhere in the value.
*SEARCH_GLOB*::
- Do a glob match of the search string against the value.
+Do a glob match of the search string against the value.
*SEARCH_REGEX*::
- Do a regular expression match of the search string against
- the value.
+Do a regular expression match of the search string against the value.
*SEARCH_NOCASE*::
- Ignore case when matching strings. Works for all the above
- match types.
+Ignore case when matching strings. Works for all the above match types.
*SEARCH_FILES*::
- Match the complete filenames of the file list, not just the
- base name.
+Match the complete filenames of the file list, not just the base name.
*SEARCH_COMPLETE_FILELIST*::
- When matching the file list, check every file of the package
- not just the subset from the primary metadata.
+When matching the file list, check every file of the package not just the
+subset from the primary metadata.
*SEARCH_CHECKSUMS*::
- Allow the matching of checksum entries.
+Allow the matching of checksum entries.
=== METHODS ===
Iterate through the matches. If there is a match, the object
in d will be of type Datamatch.
-THE DATAMATCH CLASS
+The Datamatch Class
-------------------
Objects of this type will be created for every value matched
by a dataiterator.
The id of the solvable that matched.
-=== METHODS ===
+ Id key_id;
+ $d->{key_id}
+ d.key_id
+ d.key_id
- Id key_id();
- $d->key_id()
- d.key_id()
- d.key_id()
-
- const char *key_idstr();
- $d->key_idstr()
- d.key_idstr()
- d.key_idstr()
+ const char *key_idstr;
+ $d->{key_idstr}
+ d.key_idstr
+ d.key_idstr
The keyname that matched, either as id or string.
- Id type_id();
- $d->type_id()
- d.type_id()
- d.type_id()
+ Id type_id;
+ $d->{type_id}
+ d.type_id
+ d.type_id
- const char *type_idstr();
- $d->type_idstr();
- d.type_idstr()
- d.type_idstr()
+ const char *type_idstr;
+ $d->{type_idstr};
+ d.type_idstr
+ d.type_idstr
The key type of the value that was matched, either as id or string.
- Id id();
- $d->id()
- d.id()
- d.id()
+ Id id;
+ $d->{id}
+ d.id
+ d.id
- Id idstr();
- $d->idstr()
- d.idstr()
- d.idstr()
+ Id idstr;
+ $d->{idstr}
+ d.idstr
+ d.idstr
The Id of the value that was matched (only valid for id types),
either as id or string.
- const char *str();
- $d->str()
- d.str()
- d.str()
+ const char *str;
+ $d->{str}
+ d.str
+ d.str
The string value that was matched (only valid for string types).
- unsigned long long num();
- $d->num()
- d.num()
- d.num()
+ unsigned long long num;
+ $d->{num}
+ d.num
+ d.num
The numeric value that was matched (only valid for numeric types).
- unsigned int num2();
- $d->num2()
- d.num2()
- d.num2()
+ unsigned int num2;
+ $d->{num2}
+ d.num2
+ d.num2
The secondary numeric value that was matched (only valid for types
containing two values).
+ unsigned int binary;
+ $d->{binary}
+ d.binary
+ d.binary
+
+The value in binary form, useful for checksums and other data
+that cannot be represented as a string.
+
+=== METHODS ===
+
Datapos pos();
my $pos = $d->pos();
pos = d.pos()
Numeric values are currently stringified to an empty string.
-THE SELECTION CLASS
+The Selection Class
-------------------
Selections are a way to easily deal with sets of packages.
There are multiple constructors to create them, the most useful
=== CONSTANTS ===
*SELECTION_NAME*::
- Create the selection by matching package names
+Create the selection by matching package names.
*SELECTION_PROVIDES*::
- Create the selection by matching package provides
+Create the selection by matching package provides.
*SELECTION_FILELIST*::
- Create the selection by matching package files
+Create the selection by matching package files.
*SELECTION_CANON*::
- Create the selection by matching the canonical representation
- of the package. This is normally a combination of the name,
- the version, and the architecture of a package.
+Create the selection by matching the canonical representation
+of the package. This is normally a combination of the name,
+the version, and the architecture of a package.
*SELECTION_DOTARCH*::
-
Allow an ``.<architecture>'' suffix when matching names or
- provides.
+Allow an ``.<architecture>'' suffix when matching names or
+provides.
*SELECTION_REL*::
- Allow the specification of a relation when matching names
- or provides, e.g. "name >= 1.2".
+Allow the specification of a relation when matching names
+or provides, e.g. "name >= 1.2".
*SELECTION_INSTALLED_ONLY*::
- Limit the package search to installed packages.
+Limit the package search to installed packages.
*SELECTION_SOURCE_ONLY*::
- Limit the package search to source packages only.
+Limit the package search to source packages only.
*SELECTION_WITH_SOURCE*::
- Extend the package search to also match source packages. The
- default is only to match binary packages.
+Extend the package search to also match source packages. The default is
+only to match binary packages.
*SELECTION_GLOB*::
- Allow glob matching for package names, package provides, and
- file names.
+Allow glob matching for package names, package provides, and file names.
*SELECTION_NOCASE*::
- Ignore case when matching package names, package provides,
- and file names.
+Ignore case when matching package names, package provides, and file names.
*SELECTION_FLAT*::
- Return only one selection element describing the selected packages.
- The default is to create multiple elements for all globbed packages.
- Multiple elements are useful if you want to turn the selection into
- an install job, in that case you want an install job for every
- globbed package.
+Return only one selection element describing the selected packages.
+The default is to create multiple elements for all globbed packages.
+Multiple elements are useful if you want to turn the selection into
+an install job, in that case you want an install job for every
+globbed package.
=== ATTRIBUTES ===
Return a string describing the selection.
-THE JOB CLASS
+The Job Class
-------------
Jobs are the way to specify to the dependency solver what to do.
Most of the times jobs will get created by calling the jobs() method
Selection constants:
*SOLVER_SOLVABLE*::
- The ``what'' part is the id of a solvable.
+The ``what'' part is the id of a solvable.
*SOLVER_SOLVABLE_NAME*::
- The ``what'' part is the id of a package name.
+The ``what'' part is the id of a package name.
*SOLVER_SOLVABLE_PROVIDES*::
- The ``what'' part is the id of a package provides.
+The ``what'' part is the id of a package provides.
*SOLVER_SOLVABLE_ONE_OF*::
- The ``what'' part is an offset into the ``whatprovides'' data, created
- by calling the towhatprovides() pool method.
+The ``what'' part is an offset into the ``whatprovides'' data, created
+by calling the towhatprovides() pool method.
*SOLVER_SOLVABLE_REPO*::
- The ``what'' part is the id of a repository.
+The ``what'' part is the id of a repository.
*SOLVER_SOLVABLE_ALL*::
- The ``what'' part is ignored, all packages are selected.
+The ``what'' part is ignored, all packages are selected.
*SOLVER_SOLVABLE_SELECTMASK*::
- A mask containing all the above selection bits.
+A mask containing all the above selection bits.
Action constants:
*SOLVER_NOOP*::
- Do nothing.
+Do nothing.
*SOLVER_INSTALL*::
- Install a package of the specified set of packages. It tries to install
- the best matching package (i.e. the highest version of the packages from
- the repositories with the highest priority).
+Install a package of the specified set of packages. It tries to install
+the best matching package (i.e. the highest version of the packages from
+the repositories with the highest priority).
*SOLVER_ERASE*::
- Erase all of the packages from the specified set. If a package is not
- installed, erasing it will keep it from getting installed.
+Erase all of the packages from the specified set. If a package is not
+installed, erasing it will keep it from getting installed.
*SOLVER_UPDATE*::
- Update the matching installed packages to their best version. If none
- of the specified packages are installed, try to update the installed
- packages to the specified versions. See the section about targeted
- updates about more information.
-
+Update the matching installed packages to their best version. If none
+of the specified packages are installed, try to update the installed
+packages to the specified versions. See the section about targeted
+updates about more information.
+
*SOLVER_WEAKENDEPS*::
- Allow to break the dependencies of the matching packages. Handle with care.
+Allow to break the dependencies of the matching packages. Handle with care.
*SOLVER_MULTIVERSION*::
- Mark the matched packages for multiversion install. If they get to be installed
- because of some other job, the installation will keep the old version of the
- package installed (for rpm by using ``-i'' instead of ``-U'').
+Mark the matched packages for multiversion install. If they get to be
+installed because of some other job, the installation will keep the old
+version of the package installed (for rpm this is done by using ``-i''
+instead of ``-U'').
*SOLVER_LOCK*::
- Do not change the state of the matched packages, i.e. when they are installed
- they stay installed, if not they are not selected for installation.
+Do not change the state of the matched packages, i.e. when they are
+installed they stay installed, if not they are not selected for
+installation.
*SOLVER_DISTUPGRADE*::
- Update the matching installed packages to the best version included in one
- of the repositories. After this operation, all come from one of the available
- repositories except orphaned packages. Orphaned packages are packages that
- have no relation to the packages in the repositories, i.e. no package in the
- repositories have the same name or obsolete the orphaned package.
- This action brings the installed packages in sync with the ones in the
- repository. It also turns of arch/vendor/version locking for the affected
- packages to simulate a fresh installation. This means that distupgrade can
- actually downgrade packages if only lower versions of a package are available
- in the repositories.
+Update the matching installed packages to the best version included in one
+of the repositories. After this operation, all come from one of the available
+repositories except orphaned packages. Orphaned packages are packages that
+have no relation to the packages in the repositories, i.e. no package in the
+repositories have the same name or obsolete the orphaned package.
+This action brings the installed packages in sync with the ones in the
+repository. By default it also turns of arch/vendor/version locking for the
+affected packages to simulate a fresh installation. This means that distupgrade can
+actually downgrade packages if only lower versions of a package are available
+in the repositories. You can tweak this behavior with the SOLVER_FLAG_DUP_
+solver flags.
*SOLVER_DROP_ORPHANED*::
- Erase all the matching installed packages if they are orphaned. This only makes
- sense if there is a ``distupgrade all packages'' job. The default is to erase
- orphaned packages only if they block the installation of other packages.
+Erase all the matching installed packages if they are orphaned. This only makes
+sense if there is a ``distupgrade all packages'' job. The default is to erase
+orphaned packages only if they block the installation of other packages.
*SOLVER_VERIFY*::
- Fix dependency problems of matching installed packages. The default is to ignore
- dependency problems for installed packages.
+Fix dependency problems of matching installed packages. The default is to ignore
+dependency problems for installed packages.
*SOLVER_USERINSTALLED*::
- The matching installed packages are considered to be installed by a user, thus
- not installed to fulfill some dependency. This is needed input for the calculation
- of unneeded packages for jobs that have the SOLVER_CLEANDEPS flag set.
+The matching installed packages are considered to be installed by a user,
+thus not installed to fulfill some dependency. This is needed input for
+the calculation of unneeded packages for jobs that have the
+SOLVER_CLEANDEPS flag set.
*SOLVER_JOBMASK*::
- A mask containing all the above action bits.
+A mask containing all the above action bits.
Action modifier constants:
*SOLVER_WEAK*::
- Makes the job a weak job. The solver tries to fulfill weak jobs, but does not
- report a problem if it is not possible to do so.
+Makes the job a weak job. The solver tries to fulfill weak jobs, but does
+not report a problem if it is not possible to do so.
*SOLVER_ESSENTIAL*::
- Makes the job an essential job. If there is a problem with the job, the solver
- will not propose to remove the job as one solution (unless all other solutions
- are also to remove essential jobs).
+Makes the job an essential job. If there is a problem with the job, the
+solver will not propose to remove the job as one solution (unless all
+other solutions are also to remove essential jobs).
*SOLVER_CLEANDEPS*::
- The solver will try to also erase all packages dragged in through dependencies
- when erasing the package. This needs SOLVER_USERINSTALLED jobs to maximize user
- satisfaction.
+The solver will try to also erase all packages dragged in through
+dependencies when erasing the package. This needs SOLVER_USERINSTALLED
+jobs to maximize user satisfaction.
*SOLVER_FORCEBEST*::
- Insist on the best package for install, update, and distupgrade jobs. If this
- flag is not used, the solver will use the second-best package if the best
- package cannot be installed for some reason. When this flag is used, the solver
- will generate a problem instead.
+Insist on the best package for install, update, and distupgrade jobs. If
+this flag is not used, the solver will use the second-best package if the
+best package cannot be installed for some reason. When this flag is used,
+the solver will generate a problem instead.
*SOLVER_TARGETED*::
- Forces targeted operation update and distupgrade jobs. See the section about
- targeted updates about more information.
+Forces targeted operation update and distupgrade jobs. See the section
+about targeted updates about more information.
Set constants.
*SOLVER_SETEV*::
- The job specified the exact epoch and version of the package set.
+The job specified the exact epoch and version of the package set.
*SOLVER_SETEVR*::
- The job specified the exact epoch, version, and release of the package set.
+The job specified the exact epoch, version, and release of the package set.
*SOLVER_SETARCH*::
- The job specified the exact architecture of the packages from the set.
+The job specified the exact architecture of the packages from the set.
*SOLVER_SETVENDOR*::
- The job specified the exact vendor of the packages from the set.
+The job specified the exact vendor of the packages from the set.
*SOLVER_SETREPO*::
- The job specified the exact repository of the packages from the set.
+The job specified the exact repository of the packages from the set.
*SOLVER_SETNAME*::
- The job specified the exact name of the packages from the set.
+The job specified the exact name of the packages from the set.
*SOLVER_NOAUTOSET*::
- Turn of automatic set flag generation for SOLVER_SOLVABLE jobs.
+Turn of automatic set flag generation for SOLVER_SOLVABLE jobs.
*SOLVER_SETMASK*::
- A mask containing all the above set bits.
+A mask containing all the above set bits.
See the section about set bits for more information.
the set bits are automatically added, e.g. selecting ``screen.i586'' will
automatically add SOLVER_SETARCH, and thus no problem will be reported.
-THE SOLVER CLASS
+The Solver Class
----------------
Dependency solving is what this library is about. A solver object is needed
for solving to store the result of the solver run. The solver object can be
Flags to modify some of the solver's behavior:
*SOLVER_FLAG_ALLOW_DOWNGRADE*::
- Allow the solver to downgrade packages without asking for confirmation
- (i.e. reporting a problem).
+Allow the solver to downgrade packages without asking for confirmation
+(i.e. reporting a problem).
*SOLVER_FLAG_ALLOW_ARCHCHANGE*::
- Allow the solver to change the architecture of an installed package
- without asking for confirmation. Note that changes to/from noarch
- are always considered to be allowed.
+Allow the solver to change the architecture of an installed package
+without asking for confirmation. Note that changes to/from noarch
+are always considered to be allowed.
*SOLVER_FLAG_ALLOW_VENDORCHANGE*::
- Allow the solver to change the vendor of an installed package
- without asking for confirmation. Each vendor is part of one or more
- vendor equivalence classes, normally installed packages may only
- change their vendor if the new vendor shares at least one equivalence
- class.
+Allow the solver to change the vendor of an installed package
+without asking for confirmation. Each vendor is part of one or more
+vendor equivalence classes, normally installed packages may only
+change their vendor if the new vendor shares at least one equivalence
+class.
*SOLVER_FLAG_ALLOW_NAMECHANGE*::
- Allow the solver to change the name of an installed package, i.e.
- install a package with a different name that obsoletes the installed
- package. This option is on by default.
+Allow the solver to change the name of an installed package, i.e.
+install a package with a different name that obsoletes the installed
+package. This option is on by default.
*SOLVER_FLAG_ALLOW_UNINSTALL*::
- Allow the solver to erase installed packages to fulfill the jobs.
- This flag also includes the above flags. You may want to set this
- flag if you only have SOLVER_ERASE jobs, as in that case it's
- better for the user to check the transaction overview instead of
- approving every single package that needs to be erased.
+Allow the solver to erase installed packages to fulfill the jobs.
+This flag also includes the above flags. You may want to set this
+flag if you only have SOLVER_ERASE jobs, as in that case it's
+better for the user to check the transaction overview instead of
+approving every single package that needs to be erased.
+
+*SOLVER_FLAG_DUP_ALLOW_DOWNGRADE*::
+Like SOLVER_FLAG_ALLOW_DOWNGRADE, but used in distupgrade mode.
+
+*SOLVER_FLAG_DUP_ALLOW_ARCHCHANGE*::
+Like SOLVER_FLAG_ALLOW_ARCHCHANGE, but used in distupgrade mode.
+
+*SOLVER_FLAG_DUP_ALLOW_VENDORCHANGE*::
+Like SOLVER_FLAG_ALLOW_VENDORCHANGE, but used in distupgrade mode.
+
+*SOLVER_FLAG_DUP_ALLOW_NAMECHANGE*::
+Like SOLVER_FLAG_ALLOW_NAMECHANGE, but used in distupgrade mode.
*SOLVER_FLAG_NO_UPDATEPROVIDE*::
- If multiple packages obsolete an installed package, the solver checks
- the provides of every such package and ignores all packages that
- do not provide the installed package name. Thus, you can have an
- official update candidate that provides the old name, and other
- packages that also obsolete the package but are not considered for
- updating. If you cannot use this feature, you can turn it off
- by setting this flag.
+If multiple packages obsolete an installed package, the solver checks
+the provides of every such package and ignores all packages that
+do not provide the installed package name. Thus, you can have an
+official update candidate that provides the old name, and other
+packages that also obsolete the package but are not considered for
+updating. If you cannot use this feature, you can turn it off
+by setting this flag.
*SOLVER_FLAG_SPLITPROVIDES*::
- Make the solver aware of special provides of the form
-
``<packagename>:<path>'' used in SUSE systems to support package
- splits.
+Make the solver aware of special provides of the form
+``<packagename>:<path>'' used in SUSE systems to support package
+splits.
*SOLVER_FLAG_IGNORE_RECOMMENDED*::
- Do not process optional (aka weak) dependencies.
+Do not process optional (aka weak) dependencies.
*SOLVER_FLAG_ADD_ALREADY_RECOMMENDED*::
- Install recommended or supplemented packages even if they have no
- connection to the current transaction. You can use this feature
- to implement a simple way for the user to install new recommended
- packages that were not available in the past.
+Install recommended or supplemented packages even if they have no
+connection to the current transaction. You can use this feature
+to implement a simple way for the user to install new recommended
+packages that were not available in the past.
*SOLVER_FLAG_NO_INFARCHCHECK*::
- Turn off the inferior architecture checking that is normally done
- by the solver. Normally, the solver allows only the installation
- of packages from the "best" architecture if a package is available
- for multiple architectures.
+Turn off the inferior architecture checking that is normally done
+by the solver. Normally, the solver allows only the installation
+of packages from the "best" architecture if a package is available
+for multiple architectures.
*SOLVER_FLAG_BEST_OBEY_POLICY*::
- Make the SOLVER_FORCEBEST job option consider only packages that
- meet the policies for installed packages, i.e. no downgrades,
- no architecture change, no vendor change (see the first flags
- of this section). If the flag is not specified, the solver will
- enforce the installation of the best package ignoring the
- installed packages, which may conflict with the set policy.
+Make the SOLVER_FORCEBEST job option consider only packages that
+meet the policies for installed packages, i.e. no downgrades,
+no architecture change, no vendor change (see the first flags
+of this section). If the flag is not specified, the solver will
+enforce the installation of the best package ignoring the
+installed packages, which may conflict with the set policy.
*SOLVER_FLAG_NO_AUTOTARGET*::
- Do not enable auto-targeting up update and distupgrade jobs. See
- the section on targeted updates for more information.
+Do not enable auto-targeting up update and distupgrade jobs. See
+the section on targeted updates for more information.
Basic rule types:
*SOLVER_RULE_UNKNOWN*::
- A rule of an unknown class. You should never encounter those.
+A rule of an unknown class. You should never encounter those.
*SOLVER_RULE_RPM*::
- A package dependency rule, called rpm rule for historical reasons.
+A package dependency rule, called rpm rule for historical reasons.
*SOLVER_RULE_UPDATE*::
- A rule to implement the update policy of installed packages. Every
- installed package has an update rule that consists of the packages
- that may replace the installed package.
+A rule to implement the update policy of installed packages. Every
+installed package has an update rule that consists of the packages
+that may replace the installed package.
*SOLVER_RULE_FEATURE*::
- Feature rules are fallback rules used when a update rule is disabled.
- They include all packages that may replace the installed package
- ignoring the update policy, i.e. they contain downgrades, arch
- changes and so on. Without them, the solver would simply erase
- installed packages if their update rule gets disabled.
+Feature rules are fallback rules used when a update rule is disabled. They
+include all packages that may replace the installed package ignoring the
+update policy, i.e. they contain downgrades, arch changes and so on.
+Without them, the solver would simply erase installed packages if their
+update rule gets disabled.
*SOLVER_RULE_JOB*::
- Job rules implement the job given to the solver.
+Job rules implement the job given to the solver.
*SOLVER_RULE_DISTUPGRADE*::
- This are simple negative assertions that make sure that only packages
- are kept that are also available in one of the repositories.
+This are simple negative assertions that make sure that only packages
+are kept that are also available in one of the repositories.
*SOLVER_RULE_INFARCH*::
- Infarch rules are also negative assertions, they disallow the installation
- of packages when there are packages of the same name but with a better
- architecture.
+Infarch rules are also negative assertions, they disallow the installation
+of packages when there are packages of the same name but with a better
+architecture.
*SOLVER_RULE_CHOICE*::
- Choice rules are used to make sure that the solver prefers updating to
- installing different packages when some dependency is provided by
- multiple packages with different names. The solver may always break
- choice rules, so you will not see them when a problem is found.
+Choice rules are used to make sure that the solver prefers updating to
+installing different packages when some dependency is provided by
+multiple packages with different names. The solver may always break
+choice rules, so you will not see them when a problem is found.
*SOLVER_RULE_LEARNT*::
- These rules are generated by the solver to keep it from running into
- the same problem multiple times when it has to backtrack. They are
- the main reason why a sat solver is faster then other dependency solver
- implementations.
+These rules are generated by the solver to keep it from running into
+the same problem multiple times when it has to backtrack. They are
+the main reason why a sat solver is faster then other dependency solver
+implementations.
Special dependency rule types:
*SOLVER_RULE_RPM_NOT_INSTALLABLE*::
- This rule was added to prevent the installation of a package of an
- architecture that does not work on the system.
+This rule was added to prevent the installation of a package of an
+architecture that does not work on the system.
*SOLVER_RULE_RPM_NOTHING_PROVIDES_DEP*::
- The package contains a required dependency which was not provided by
- any package.
+The package contains a required dependency which was not provided by
+any package.
*SOLVER_RULE_RPM_PACKAGE_REQUIRES*::
- Similar to SOLVER_RULE_RPM_NOTHING_PROVIDES_DEP, but in this case
- some packages provided the dependency but none of them could be
- installed due to other dependency issues.
+Similar to SOLVER_RULE_RPM_NOTHING_PROVIDES_DEP, but in this case
+some packages provided the dependency but none of them could be
+installed due to other dependency issues.
*SOLVER_RULE_RPM_SELF_CONFLICT*::
- The package conflicts with itself. This is not allowed by older rpm
- versions.
+The package conflicts with itself. This is not allowed by older rpm
+versions.
*SOLVER_RULE_RPM_PACKAGE_CONFLICT*::
- To fulfill the dependencies two packages need to be installed, but
- one of the packages contains a conflict with the other one.
+To fulfill the dependencies two packages need to be installed, but
+one of the packages contains a conflict with the other one.
*SOLVER_RULE_RPM_SAME_NAME*::
- The dependencies can only be fulfilled by multiple versions of
- a package, but installing multiple versions of the same package
- is not allowed.
+The dependencies can only be fulfilled by multiple versions of
+a package, but installing multiple versions of the same package
+is not allowed.
*SOLVER_RULE_RPM_PACKAGE_OBSOLETES*::
- To fulfill the dependencies two packages need to be installed, but
- one of the packages obsoletes the other one.
+To fulfill the dependencies two packages need to be installed, but
+one of the packages obsoletes the other one.
*SOLVER_RULE_RPM_IMPLICIT_OBSOLETES*::
- To fulfill the dependencies two packages need to be installed, but
- one of the packages has provides a dependency that is obsoleted
- by the other one. See the POOL_FLAG_IMPLICITOBSOLETEUSESPROVIDES
- flag.
+To fulfill the dependencies two packages need to be installed, but
+one of the packages has provides a dependency that is obsoleted
+by the other one. See the POOL_FLAG_IMPLICITOBSOLETEUSESPROVIDES
+flag.
*SOLVER_RULE_RPM_INSTALLEDPKG_OBSOLETES*::
- To fulfill the dependencies a package needs to be installed that is
- obsoleted by an installed package. See the POOL_FLAG_NOINSTALLEDOBSOLETES
- flag.
+To fulfill the dependencies a package needs to be installed that is
+obsoleted by an installed package. See the POOL_FLAG_NOINSTALLEDOBSOLETES
+flag.
*SOLVER_RULE_JOB_NOTHING_PROVIDES_DEP*::
- The user asked for installation of a package providing a specific
- dependency, but no available package provides it.
+The user asked for installation of a package providing a specific
+dependency, but no available package provides it.
*SOLVER_RULE_JOB_UNKNOWN_PACKAGE*::
- The user asked for installation of a package with a specific name,
- but no available package has that name.
+The user asked for installation of a package with a specific name,
+but no available package has that name.
*SOLVER_RULE_JOB_PROVIDED_BY_SYSTEM*::
- The user asked for the erasure of a dependency that is provided by the
- system (i.e. for special hardware or language dependencies), this
- cannot be done with a job.
+The user asked for the erasure of a dependency that is provided by the
+system (i.e. for special hardware or language dependencies), this
+cannot be done with a job.
*SOLVER_RULE_JOB_UNSUPPORTED*::
- The user asked for something that is not yet implemented, e.g. the
- installation of all packages at once.
+The user asked for something that is not yet implemented, e.g. the
+installation of all packages at once.
Policy error constants
*POLICY_ILLEGAL_DOWNGRADE*::
- The solver ask for permission before downgrading packages.
+The solver ask for permission before downgrading packages.
*POLICY_ILLEGAL_ARCHCHANGE*::
- The solver ask for permission before changing the architecture of installed
- packages.
+The solver ask for permission before changing the architecture of installed
+packages.
*POLICY_ILLEGAL_VENDORCHANGE*::
- The solver ask for permission before changing the vendor of installed
- packages.
+The solver ask for permission before changing the vendor of installed
+packages.
*POLICY_ILLEGAL_NAMECHANGE*::
- The solver ask for permission before replacing an installed packages with
- a package that has a different name.
+The solver ask for permission before replacing an installed packages with
+a package that has a different name.
Solution element type constants
*SOLVER_SOLUTION_JOB*::
- The problem can be solved by removing the specified job.
+The problem can be solved by removing the specified job.
*SOLVER_SOLUTION_POOLJOB*::
- The problem can be solved by removing the specified job that is defined in the pool.
+The problem can be solved by removing the specified job that is defined
+in the pool.
*SOLVER_SOLUTION_INFARCH*::
- The problem can be solved by allowing the installation of the specified package
- with an inferior architecture.
+The problem can be solved by allowing the installation of the specified
+package with an inferior architecture.
*SOLVER_SOLUTION_DISTUPGRADE*::
- The problem can be solved by allowing to keep the specified package installed.
+The problem can be solved by allowing to keep the specified package
+installed.
*SOLVER_SOLUTION_BEST*::
- The problem can be solved by allowing to install the specified package that is
- not the best available package.
+The problem can be solved by allowing to install the specified package
+that is not the best available package.
*SOLVER_SOLUTION_ERASE*::
- The problem can be solved by allowing to erase the specified package.
+The problem can be solved by allowing to erase the specified package.
*SOLVER_SOLUTION_REPLACE*::
- The problem can be solved by allowing to replace the package with some other
- package.
+The problem can be solved by allowing to replace the package with some
+other package.
*SOLVER_SOLUTION_REPLACE_DOWNGRADE*::
- The problem can be solved by allowing to replace the package with some other
- package that has a lower version.
+The problem can be solved by allowing to replace the package with some
+other package that has a lower version.
*SOLVER_SOLUTION_REPLACE_ARCHCHANGE*::
- The problem can be solved by allowing to replace the package with some other
- package that has a different architecture.
+The problem can be solved by allowing to replace the package with some
+other package that has a different architecture.
*SOLVER_SOLUTION_REPLACE_VENDORCHANGE*::
- The problem can be solved by allowing to replace the package with some other
- package that has a different vendor.
+The problem can be solved by allowing to replace the package with some
+other package that has a different vendor.
*SOLVER_SOLUTION_REPLACE_NAMECHANGE*::
- The problem can be solved by allowing to replace the package with some other
- package that has a different name.
+The problem can be solved by allowing to replace the package with some
+other package that has a different name.
+
+
+Reason constants
+
+*SOLVER_REASON_UNRELATED*::
+The package status did not change as it was not related to any job.
+
+*SOLVER_REASON_UNIT_RULE*::
+The package was installed/erased/kept because of a unit rule, i.e. a rule
+where all literals but one were false.
+
+*SOLVER_REASON_KEEP_INSTALLED*::
+The package was chosen when trying to keep as many packages installed as
+possible.
+
+*SOLVER_REASON_RESOLVE_JOB*::
+The decision happened to fulfill a job rule.
+
+*SOLVER_REASON_UPDATE_INSTALLED*::
+The decision happened to fulfill a package update request.
+
+*SOLVER_REASON_CLEANDEPS_ERASE*::
+The package was erased when cleaning up dependencies from other erased
+packages.
+
+*SOLVER_REASON_RESOLVE*::
+The package was installed to fulfill package dependencies.
+
+*SOLVER_REASON_WEAKDEP*::
+The package was installed because of a weak dependency (Recommends or
+Supplements).
+
+*SOLVER_REASON_RESOLVE_ORPHAN*::
+The decision about the package was made when deciding the fate of orphaned
+packages.
+
+*SOLVER_REASON_RECOMMENDED*::
+This is a special case of SOLVER_REASON_WEAKDEP.
+
+*SOLVER_REASON_SUPPLEMENTED*::
+This is a special case of SOLVER_REASON_WEAKDEP.
=== ATTRIBUTES ===
=== METHODS ===
int set_flag(int flag, int value)
- my $oldvalue = $pool->set_flag($flag, $value);
- oldvalue = pool.set_flag(flag, value)
- oldvalue = pool.set_flag(flag, value)
+ my $oldvalue = $solver->set_flag($flag, $value);
+ oldvalue = solver.set_flag(flag, value)
+ oldvalue = solver.set_flag(flag, value)
int get_flag(int flag)
- my $value = $pool->get_flag($flag);
- value = pool.get_flag(flag)
- value = pool.get_flag(flag)
+ my $value = $solver->get_flag($flag);
+ value = solver.get_flag(flag)
+ value = solver.get_flag(flag)
Set/get a solver specific flag. The flags define the policies the solver has
to obey. The flags are explained in the CONSTANTS section of this class.
is available even if problems were found, this is useful for interactive user
interfaces that show both the job result and the problems.
-THE PROBLEM CLASS
+ int reason = describe_decision(Solvable *s, Rule *OUTPUT)
+ my ($reason, $rule) = $solver->describe_decision($solvable);
+ (reason, rule) = solver.describe_decision(solvable)
+ (reason, rule) = solver.describe_decision(solvable)
+
+Return the reason why a specific solvable was installed or erased. For most of
+the reasons the rule that triggered the decision is also returned.
+
+The Problem Class
-----------------
Problems are the way of the solver to interact with the user. You can simply list
all problems and terminate your program, but a better way is to present solutions to
Return the number of solutions without creating solution objects.
-THE RULE CLASS
+ <stringification>
+ my $str = $problem->str;
+ str = str(problem)
+ str = problem.to_s
+
+Return a string describing the problem. This is a convenience function, it is
+a shorthand for calling findproblemrule(), then ruleinfo() on the problem
+rule and problemstr() on the ruleinfo object.
+
+The Rule Class
--------------
Rules are the basic block of sat solving. Each package dependency gets translated
into one or multiple rules.
Two rules are equal if they belong to the same solver and have the same id.
-THE RULEINFO CLASS
+The Ruleinfo Class
------------------
A Ruleinfo describes one reason why a rule was created.
A string describing the ruleinfo from a problem perspective. This probably
only makes sense if the rule is part of a problem.
-THE SOLUTION CLASS
+The Solution Class
------------------
A solution solves one specific problem. It consists of multiple solution elements
that all need to be executed.
of expandreplaces is set to true.
-THE SOLUTIONELEMENT CLASS
+The Solutionelement Class
-------------------------
A solution element describes a single action of a solution. The action is always
either to remove one specific job or to add a new job that installs or erases
A string describing the change the solution element consists of.
-THE TRANSACTION CLASS
+The Transaction Class
---------------------
Transactions describe the output of a solver run. A transaction contains
a number of transaction elements, each either the installation of a new
Transaction element types, both active and passive
*SOLVER_TRANSACTION_IGNORE*::
- This element does nothing. Used to map element types that do not
- match the view mode.
+This element does nothing. Used to map element types that do not match
+the view mode.
*SOLVER_TRANSACTION_INSTALL*::
- This element installs a package.
+This element installs a package.
*SOLVER_TRANSACTION_ERASE*::
- This element erases a package.
+This element erases a package.
*SOLVER_TRANSACTION_MULTIINSTALL*::
- This element installs a package with a different version keeping the
- other versions installed.
+This element installs a package with a different version keeping the other
+versions installed.
*SOLVER_TRANSACTION_MULTIREINSTALL*::
- This element reinstalls a installed package keeping the other versions
- installed.
+This element reinstalls a installed package keeping the other versions
+installed.
Transaction element types, active view
*SOLVER_TRANSACTION_REINSTALL*::
- This element re-installs a package, i.e. installs the same package again.
+This element re-installs a package, i.e. installs the same package again.
*SOLVER_TRANSACTION_CHANGE*::
- This element installs a package with same name, version, architecture but
- different content.
+This element installs a package with same name, version, architecture but
+different content.
*SOLVER_TRANSACTION_UPGRADE*::
- This element installs a newer version of an installed package.
+This element installs a newer version of an installed package.
*SOLVER_TRANSACTION_DOWNGRADE*::
- This element installs a older version of an installed package.
+This element installs a older version of an installed package.
*SOLVER_TRANSACTION_OBSOLETES*::
- This element installs a package that obsoletes an installed package.
+This element installs a package that obsoletes an installed package.
Transaction element types, passive view
*SOLVER_TRANSACTION_REINSTALLED*::
- This element re-installs a package, i.e. installs the same package again.
+This element re-installs a package, i.e. installs the same package again.
*SOLVER_TRANSACTION_CHANGED*::
- This element replaces an installed package with one of the same name,
- version, architecture but different content.
+This element replaces an installed package with one of the same name,
+version, architecture but different content.
*SOLVER_TRANSACTION_UPGRADED*::
- This element replaces an installed package with a new version.
+This element replaces an installed package with a new version.
*SOLVER_TRANSACTION_DOWNGRADED*::
- This element replaces an installed package with an old version.
+This element replaces an installed package with an old version.
*SOLVER_TRANSACTION_OBSOLETED*::
- This element replaces an installed package with a package that obsoletes
- it.
+This element replaces an installed package with a package that obsoletes
+it.
Pseudo element types for showing extra information used by classify()
*SOLVER_TRANSACTION_ARCHCHANGE*::
- This element replaces an installed package with a package of a different
- architecture.
+This element replaces an installed package with a package of a different
+architecture.
*SOLVER_TRANSACTION_VENDORCHANGE*::
- This element replaces an installed package with a package of a different
- vendor.
+This element replaces an installed package with a package of a different
+vendor.
Transaction mode flags
*SOLVER_TRANSACTION_SHOW_ACTIVE*::
- Filter for active view types. The default is to return passive view type,
- i.e. to show how the installed packages get changed.
+Filter for active view types. The default is to return passive view type,
+i.e. to show how the installed packages get changed.
*SOLVER_TRANSACTION_SHOW_OBSOLETES*::
- Do not map the obsolete view type into INSTALL/ERASE elements.
+Do not map the obsolete view type into INSTALL/ERASE elements.
*SOLVER_TRANSACTION_SHOW_ALL*::
- If multiple packages replace an installed package, only the best of them
- is kept as OBSOLETE element, the other ones are mapped to INSTALL/ERASE
- elements. This is because most applications want to show just one package
- replacing the installed one. The SOLVER_TRANSACTION_SHOW_ALL makes the
- library keep all OBSOLETE elements.
+If multiple packages replace an installed package, only the best of them
+is kept as OBSOLETE element, the other ones are mapped to INSTALL/ERASE
+elements. This is because most applications want to show just one package
+replacing the installed one. The SOLVER_TRANSACTION_SHOW_ALL makes the
+library keep all OBSOLETE elements.
*SOLVER_TRANSACTION_SHOW_MULTIINSTALL*::
- The library maps MULTIINSTALL elements to simple INSTALL elements. This
- flag can be used to disable the mapping.
+The library maps MULTIINSTALL elements to simple INSTALL elements. This
+flag can be used to disable the mapping.
*SOLVER_TRANSACTION_CHANGE_IS_REINSTALL*::
- Use this flag if you want to map CHANGE elements to the REINSTALL type.
+Use this flag if you want to map CHANGE elements to the REINSTALL type.
*SOLVER_TRANSACTION_OBSOLETE_IS_UPGRADE*::
- Use this flag if you want to map OBSOLETE elements to the UPGRADE type.
+Use this flag if you want to map OBSOLETE elements to the UPGRADE type.
*SOLVER_TRANSACTION_MERGE_ARCHCHANGES*::
- Do not add extra categories for every architecture change, instead cumulate
- them in one category.
+Do not add extra categories for every architecture change, instead cumulate
+them in one category.
*SOLVER_TRANSACTION_MERGE_VENDORCHANGES*::
- Do not add extra categories for every vendor change, instead cumulate
- them in one category.
+Do not add extra categories for every vendor change, instead cumulate
+them in one category.
*SOLVER_TRANSACTION_RPM_ONLY*::
- Special view mode that just returns IGNORE, ERASE, INSTALL, MULTIINSTALL
- elements. Useful if you want to find out what to feed to the underlying
- package manager.
+Special view mode that just returns IGNORE, ERASE, INSTALL, MULTIINSTALL
+elements. Useful if you want to find out what to feed to the underlying
+package manager.
Transaction order flags
*SOLVER_TRANSACTION_KEEP_ORDERDATA*::
- Do not throw away the dependency graph used for ordering the transaction.
- This flag is needed if you want to do manual ordering.
+Do not throw away the dependency graph used for ordering the transaction.
+This flag is needed if you want to do manual ordering.
=== ATTRIBUTES ===
passive mode list will be unchanged but the active mode list will just
contain A-2-1.
-THE TRANSACTIONCLASS CLASS
+The Transactionclass Class
--------------------------
Objects of this type are returned by the classify() Transaction method.
Return the solvables for all transaction elements in the class.
-CHECKSUMS
+Checksums
---------
Checksums (also called hashes) are used to make sure that downloaded data is
not corrupt and also as a fingerprint mechanism to check if data has changed.
Finalize the checksum and return the result as hex string.
+ const char *typestr()
+ my $typestr = $chksum->typestr();
+ typestr = chksum.typestr
+ typestr = chksum.typestr
+
+Return the type of the checksum as a string, e.g. "sha256".
+
<equality>
if ($chksum1 == $chksum2)
if chksum1 == chksum2:
Otherwise "<type>:unfinished" is returned.
-FILE MANAGEMENT
+File Management
---------------
This functions were added because libsolv uses standard *FILE* pointers to
read/write files, but languages like perl have their own implementation of
Returns false if there was an error.
-THE REPODATA CLASS
+The Repodata Class
------------------
The Repodata stores attributes for packages and the repository itself, each
repository can have multiple repodata areas. You normally only need to
The id of the repodata area. Repodata ids of different repositories overlap.
-=== METHODS ====
+=== METHODS ===
internalize();
$data->internalize();
to put the structure in an array.
-THE DATAPOS CLASS
+The Datapos Class
-----------------
Datapos objects describe a specific position in the repository data area.
Thus they are only valid until the repository is modified in some way.
Lookup functions. Note that the returned Ids are always translated into
the Ids of the global pool even if the repodata area contains its own pool.
+ Dataiterator Dataiterator(Id keyname, const char *match = 0, int flags = 0)
+ my $di = $datapos->Dataiterator($keyname, $match, $flags);
+ di = datapos.Dataiterator(keyname, match, flags)
+ di = datapos.Dataiterator(keyname, match, flags)
+
+ for my $d (@$di)
+ for d in di:
+ for d in di
+
+Iterate over the matching data elements. See the Dataiterator class for more
+information.
+
Author
------
Michael Schroeder <mls@suse.de>
projects / platform / upstream / libsolv.git / blobdiff