libzypp  17.23.8
SolutionAction.cc
Go to the documentation of this file.
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */
2 /* SolutionAction.cc
3  *
4  * Easy-to use interface to the ZYPP dependency resolver
5  *
6  * Copyright (C) 2000-2002 Ximian, Inc.
7  * Copyright (C) 2005 SUSE Linux Products GmbH
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License,
11  * version 2, as published by the Free Software Foundation.
12  *
13  * This program is distributed in the hope that it will be useful, but
14  * WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21  * 02111-1307, USA.
22  */
23 
24 #define ZYPP_USE_RESOLVER_INTERNALS
25 
29 #include <zypp/Capabilities.h>
30 #include <zypp/base/Logger.h>
31 
32 using std::endl;
33 
35 namespace zypp
36 {
37  namespace solver
39  {
40  namespace detail
42  {
43 
44 
45 IMPL_PTR_TYPE(SolutionAction);
46 
47 //---------------------------------------------------------------------------
48 
49 SolutionAction::SolutionAction()
50 {
51 }
52 
53 
54 SolutionAction::~SolutionAction()
55 {
56 }
57 
58 
59 //---------------------------------------------------------------------------
60 
61 std::ostream &
62 TransactionSolutionAction::dumpOn( std::ostream& os) const
63 {
64  os << "TransactionSolutionAction: ";
65  switch (_action) {
66  case KEEP: os << "Keep " << _item; break;
67  case INSTALL: os << "Install " << _item; break;
68  case REMOVE: os << "Remove " << _item; break;
69  case UNLOCK: os << "Unlock " << _item; break;
70  case LOCK: os << "Lock " << _item; break;
71  case REMOVE_EXTRA_REQUIRE: os << "Remove require " << _capability; break;
72  case REMOVE_EXTRA_CONFLICT: os << "Remove conflict " << _capability; break;
73  case ADD_SOLVE_QUEUE_ITEM: os << "Add SolveQueueItem " << _solverQueueItem; break;
74  case REMOVE_SOLVE_QUEUE_ITEM: os << "Remove SolveQueueItem " << _solverQueueItem; break;
75  }
76  return os;
77 }
78 
79 
80 std::ostream&
81 operator<<( std::ostream& os, const SolutionActionList & actionlist)
82 {
83  for (SolutionActionList::const_iterator iter = actionlist.begin(); iter != actionlist.end(); ++iter) {
84  os << *(*iter);
85  os << endl;
86  }
87  return os;
88 }
89 
90 //---------------------------------------------------------------------------
91 
92 std::ostream &
93 InjectSolutionAction::dumpOn( std::ostream& os ) const
94 {
95  os << "InjectSolutionAction: ";
96  switch (_kind) {
97  case WEAK: os << "Weak"; break;
98  default: os << "Wrong kind"; break;
99  }
100  os << " ";
101  os << _item;
102  return os;
103 }
104 
105 //---------------------------------------------------------------------------
106 
107 
108 std::ostream &
109 SolutionAction::dumpOn( std::ostream & os ) const
110 {
111  os << "SolutionAction<";
112  os << "not specified";
113  os << "> ";
114  return os;
115 }
116 
117 
118 bool
119 TransactionSolutionAction::execute(ResolverInternal & resolver) const
120 {
121  bool ret = true;
122  switch (action()) {
123  case KEEP:
124  _item.status().resetTransact (ResStatus::USER);
125  ret = _item.status().setTransact (false, ResStatus::APPL_HIGH); // APPL_HIGH: Locking should not be saved permanently
126  break;
127  case INSTALL:
128  if (_item.status().isToBeUninstalled())
129  ret = _item.status().setTransact (false, ResStatus::USER);
130  else
131  _item.status().setToBeInstalled (ResStatus::USER);
132  break;
133  case REMOVE:
134  if (_item.status().isToBeInstalled()) {
135  _item.status().setTransact (false,ResStatus::USER);
136  _item.status().setLock (true,ResStatus::USER); // no other dependency can set it again
137  } else if (_item.status().isInstalled())
138  _item.status().setToBeUninstalled (ResStatus::USER);
139  else
140  _item.status().setLock (true,ResStatus::USER); // no other dependency can set it again
141  break;
142  case UNLOCK:
143  ret = _item.status().setLock (false, ResStatus::USER);
144  if (!ret) ERR << "Cannot unlock " << _item << endl;
145  break;
146  case LOCK:
147  _item.status().resetTransact (ResStatus::USER);
148  ret = _item.status().setLock (true, ResStatus::APPL_HIGH); // APPL_HIGH: Locking should not be saved permanently
149  if (!ret) ERR << "Cannot lock " << _item << endl;
150  break;
151  case REMOVE_EXTRA_REQUIRE:
152  resolver.removeExtraRequire (_capability);
153  break;
154  case REMOVE_EXTRA_CONFLICT:
155  resolver.removeExtraConflict (_capability);
156  break;
157  case ADD_SOLVE_QUEUE_ITEM:
158  resolver.addQueueItem(_solverQueueItem);
159  break;
160  case REMOVE_SOLVE_QUEUE_ITEM:
161  resolver.removeQueueItem(_solverQueueItem);
162  break;
163  default:
164  ERR << "Wrong TransactionKind" << endl;
165  ret = false;
166  }
167  return ret;
168 }
169 
170 bool
171 InjectSolutionAction::execute(ResolverInternal & resolver) const
172 {
173  switch (_kind) {
174  case WEAK:
175  // set item dependencies to weak
176  resolver.addWeak (_item);
177  break;
178  default:
179  ERR << "No valid InjectSolutionAction kind found" << endl;
180  return false;
181  }
182 
183  return true;
184 }
185 
187  };// namespace detail
190  };// namespace solver
193 };// namespace zypp
zypp::ResStatus::APPL_HIGH
Definition: ResStatus.h:110
Resolver.h
std::dumpOn
std::ostream & dumpOn(std::ostream &str, const zypp::shared_ptr< void > &obj)
Definition: PtrTypes.h:151
zypp::solver::detail::IMPL_PTR_TYPE
IMPL_PTR_TYPE(SATResolver)
SolverQueueItem.h
zypp::solver::detail::SolutionActionList
std::list< SolutionAction_Ptr > SolutionActionList
Definition: Types.h:48
Logger.h
zypp
Easy-to use interface to the ZYPP dependency resolver.
Definition: CodePitfalls.doc:1
zypp::solver::detail::operator<<
std::ostream & operator<<(std::ostream &os, const SolutionActionList &actionlist)
Definition: SolutionAction.cc:81
SolutionAction.h
Capabilities.h
zypp::ResStatus::USER
Definition: ResStatus.h:111
ERR
#define ERR
Definition: Logger.h:81
zypp::solver::detail::ResolverInternal
Resolver ResolverInternal
Preferred name in API.
Definition: Types.h:38