1/*
2 This file is part of the KDE Baloo Project
3 SPDX-FileCopyrightText: 2013 Vishesh Handa <me@vhanda.in>
4
5 SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
6*/
7
8#ifndef BALOO_TERM_H
9#define BALOO_TERM_H
10
11#include <QString>
12#include <QVariant>
13#include <QDebug>
14
15#include <memory>
16
17namespace Baloo {
18
19class Term
20{
21public:
22 enum Comparator {
23 Auto,
24 Equal,
25 Contains,
26 Greater,
27 GreaterEqual,
28 Less,
29 LessEqual,
30 };
31
32 enum Operation {
33 None,
34 And,
35 Or,
36 };
37
38 Term();
39 Term(const Term& t);
40
41 /*
42 * The Item must contain the property property
43 */
44 explicit Term(const QString& property);
45
46 /*
47 * The Item must contain the property property with
48 * value value.
49 *
50 * The default comparator is Auto which has the following behavior
51 * For Strings - Contains
52 * For DateTime - Contains
53 * For any other type - Equals
54 */
55 Term(const QString& property, const QVariant& value, Comparator c = Auto);
56
57 /*
58 * This term is a combination of other terms
59 */
60 explicit Term(Operation op);
61 Term(Operation op, const Term& t);
62 Term(Operation op, const QList<Term>& t);
63 Term(const Term& lhs, Operation op, const Term& rhs);
64 ~Term();
65
66 bool isValid() const;
67
68 /*
69 * Negate this term. Negation only applies for Equal or Contains
70 * For other Comparators you must invert it yourself
71 */
72 void setNegation(bool isNegated);
73
74 bool negated() const;
75 bool isNegated() const;
76
77 void addSubTerm(const Term& term);
78 void setSubTerms(const QList<Term>& terms);
79
80 /*
81 * Returns the first subTerm in the list of subTerms
82 */
83 Term subTerm() const;
84 QList<Term> subTerms() const;
85
86 void setOperation(Operation op);
87 Operation operation() const;
88
89 bool isEmpty() const;
90 bool empty() const;
91
92 /*
93 * Return the property this term is targeting
94 */
95 QString property() const;
96 void setProperty(const QString& property);
97
98 QVariant value() const;
99 void setValue(const QVariant& value);
100
101 Comparator comparator() const;
102 void setComparator(Comparator c);
103
104 void setUserData(const QString& name, const QVariant& value);
105 QVariant userData(const QString& name) const;
106
107 QVariantMap toVariantMap() const;
108 static Term fromVariantMap(const QVariantMap& map);
109
110 bool operator == (const Term& rhs) const;
111
112 Term& operator=(const Term& rhs);
113
114private:
115 class Private;
116 std::unique_ptr<Private> const d;
117};
118
119inline Term operator &&(const Term& lhs, const Term& rhs)
120{
121 if (lhs.isEmpty())
122 return rhs;
123 else if (rhs.isEmpty())
124 return lhs;
125
126 return {lhs, Term::And, rhs};
127}
128
129inline Term operator ||(const Term& lhs, const Term& rhs)
130{
131 if (lhs.isEmpty())
132 return rhs;
133 else if (rhs.isEmpty())
134 return lhs;
135
136 return {lhs, Term::Or, rhs};
137}
138
139inline Term operator !(const Term& rhs)
140{
141 Term t(rhs);
142 t.setNegation(!rhs.isNegated());
143 return t;
144}
145
146char *toString(const Term& term);
147
148}
149
150QDebug operator <<(QDebug d, const Baloo::Term& t);
151
152Q_DECLARE_TYPEINFO(Baloo::Term, Q_RELOCATABLE_TYPE);
153
154#endif
155

source code of baloo/src/lib/term.h