libmusicbrainz5 5.1.0
Entity.h
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1/* --------------------------------------------------------------------------
2
3 libmusicbrainz5 - Client library to access MusicBrainz
4
5 Copyright (C) 2012 Andrew Hawkins
6
7 This file is part of libmusicbrainz5.
8
9 This library is free software; you can redistribute it and/or
10 modify it under the terms of the GNU Lesser General Public
11 License as published by the Free Software Foundation; either
12 version 2.1 of the License, or (at your option) any later version.
13
14 libmusicbrainz5 is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 Lesser General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this library. If not, see <http://www.gnu.org/licenses/>.
21
22 $Id$
23
24----------------------------------------------------------------------------*/
25
26#ifndef _MUSICBRAINZ5_ENTITY_H
27#define _MUSICBRAINZ5_ENTITY_H
28
29#include <iostream>
30#include <string>
31#include <sstream>
32#include <map>
33
34#include "musicbrainz5/xmlParser.h"
35
36namespace MusicBrainz5
37{
38 class CEntityPrivate;
39
40 class CRelationListList;
41
42 class CEntity
43 {
44 public:
46 CEntity(const CEntity& Other);
47 CEntity& operator =(const CEntity& Other);
48 virtual ~CEntity();
49
50 virtual CEntity *Clone()=0;
51
52 void Parse(const XMLNode& Node);
53
54 std::map<std::string,std::string> ExtAttributes() const;
55 std::map<std::string,std::string> ExtElements() const;
56
57 virtual std::ostream& Serialise(std::ostream& os) const;
58 static std::string GetElementName();
59
60 protected:
61 void ProcessRelationList(const XMLNode& Node, CRelationListList* & RetVal);
62
63 template<typename T>
64 void ProcessItem(const XMLNode& Node, T* & RetVal)
65 {
66 RetVal=new T(Node);
67 }
68
69 template<class T>
70 void ProcessItem(const XMLNode& Node, T& RetVal)
71 {
72 std::stringstream os;
73 if (Node.getText())
74 os << (const char *)Node.getText();
75
76 os >> RetVal;
77 if (os.fail())
78 {
79 std::cerr << "Error parsing value '";
80 if (Node.getText())
81 std::cerr << Node.getText();
82 std::cerr << "'" << std::endl;
83 }
84 }
85
86 template<typename T>
87 void ProcessItem(const std::string& Text, T& RetVal)
88 {
89 std::stringstream os;
90 os << Text;
91
92 os >> RetVal;
93 if (os.fail())
94 {
95 std::cerr << "Error parsing value '" << Text << "'" << std::endl;
96 }
97 }
98
99 void ProcessItem(const XMLNode& Node, std::string& RetVal)
100 {
101 if (Node.getText())
102 RetVal=Node.getText();
103 }
104
105 virtual void ParseAttribute(const std::string& Name, const std::string& Value)=0;
106 virtual void ParseElement(const XMLNode& Node)=0;
107
108 private:
109 CEntityPrivate *m_d;
110
111 void Cleanup();
112 };
113}
114
115std::ostream& operator << (std::ostream& os, const MusicBrainz5::CEntity& Entity);
116
117#endif
std::ostream & operator<<(std::ostream &os, const MusicBrainz5::CEntity &Entity)
Definition: Entity.h:43
void ProcessItem(const XMLNode &Node, std::string &RetVal)
Definition: Entity.h:99
virtual CEntity * Clone()=0
void ProcessItem(const XMLNode &Node, T &RetVal)
Definition: Entity.h:70
void ProcessRelationList(const XMLNode &Node, CRelationListList *&RetVal)
virtual void ParseElement(const XMLNode &Node)=0
std::map< std::string, std::string > ExtElements() const
static std::string GetElementName()
void Parse(const XMLNode &Node)
std::map< std::string, std::string > ExtAttributes() const
void ProcessItem(const XMLNode &Node, T *&RetVal)
Definition: Entity.h:64
CEntity & operator=(const CEntity &Other)
virtual std::ostream & Serialise(std::ostream &os) const
CEntity(const CEntity &Other)
void ProcessItem(const std::string &Text, T &RetVal)
Definition: Entity.h:87
virtual void ParseAttribute(const std::string &Name, const std::string &Value)=0
Definition: RelationListList.h:40
Definition: Alias.h:37