workspace/libs/nepomukquery/query.cpp

   1 /*
   2    This file is part of the Nepomuk KDE project.
   3    Copyright (C) 2008 Sebastian Trueg <trueg@kde.org>
   4
   5    This library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public
   7    License version 2 as published by the Free Software Foundation.
   8
   9    This library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public License
  15    along with this library; see the file COPYING.LIB.  If not, write to
  16    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17    Boston, MA 02110-1301, USA.
  18  */
  19
  20 #include "query.h"
  21 #include "term.h"
  22
  23 #include <QtCore/QSharedData>
  24 #include <QtCore/QDebug>
  25
  26
  27 class Nepomuk::Search::Query::Private : public QSharedData
  28 {
  29 public:
  30     Private()
  31         : type( InvalidQuery ),
  32           limit( 0 ) {
  33     }
  34
  35     Type type;
  36     Term term;
  37     QString sparqlQuery;
  38     int limit;
  39
  40     QList<RequestProperty> requestProperties;
  41 };
  42
  43
  44 Nepomuk::Search::Query::Query()
  45     : d( new Private() )
  46 {
  47 }
  48
  49
  50 Nepomuk::Search::Query::Query( const Query& other )
  51 {
  52     d = other.d;
  53 }
  54
  55
  56 Nepomuk::Search::Query::Query( const Term& term )
  57     : d ( new Private() )
  58 {
  59     d->type = PlainQuery;
  60     d->term = term;
  61 }
  62
  63
  64 Nepomuk::Search::Query::Query( const QString& sparqlQuery )
  65     : d ( new Private() )
  66 {
  67     d->type = SPARQLQuery;
  68     d->sparqlQuery = sparqlQuery;
  69 }
  70
  71
  72 Nepomuk::Search::Query::~Query()
  73 {
  74 }
  75
  76
  77 Nepomuk::Search::Query& Nepomuk::Search::Query::operator=( const Query& other )
  78 {
  79     d = other.d;
  80     return *this;
  81 }
  82
  83
  84 Nepomuk::Search::Query::Type Nepomuk::Search::Query::type() const
  85 {
  86     return d->type;
  87 }
  88
  89
  90 Nepomuk::Search::Term Nepomuk::Search::Query::term() const
  91 {
  92     return d->term;
  93 }
  94
  95
  96 int Nepomuk::Search::Query::limit() const
  97 {
  98     return d->limit;
  99 }
 100
 101
 102 QString Nepomuk::Search::Query::sparqlQuery() const
 103 {
 104     return d->sparqlQuery;
 105 }
 106
 107
 108 void Nepomuk::Search::Query::setTerm( const Term& term )
 109 {
 110     d->term = term;
 111     d->type = PlainQuery;
 112 }
 113
 114
 115 void Nepomuk::Search::Query::setLimit( int limit )
 116 {
 117     d->limit = limit;
 118 }
 119
 120
 121 void Nepomuk::Search::Query::setSparqlQuery( const QString& qs )
 122 {
 123     d->sparqlQuery = qs;
 124     d->term = Term();
 125     d->type = SPARQLQuery;
 126 }
 127
 128
 129 void Nepomuk::Search::Query::addRequestProperty( const QUrl& property, bool optional )
 130 {
 131     d->requestProperties.append( qMakePair( property, optional ) );
 132 }
 133
 134
 135 void Nepomuk::Search::Query::clearRequestProperties()
 136 {
 137     d->requestProperties.clear();
 138 }
 139
 140
 141 QList<Nepomuk::Search::Query::RequestProperty> Nepomuk::Search::Query::requestProperties() const
 142 {
 143     return d->requestProperties;
 144 }
 145
 146
 147 namespace {
 148     bool compareRequestProperties( const QList<Nepomuk::Search::Query::RequestProperty>& rp1, const QList<Nepomuk::Search::Query::RequestProperty>& rp2 ) {
 149         // brute force
 150         foreach( const Nepomuk::Search::Query::RequestProperty& rp, rp1 ) {
 151             if ( !rp2.contains( rp ) ) {
 152                 return false;
 153             }
 154         }
 155         foreach( const Nepomuk::Search::Query::RequestProperty& rp, rp2 ) {
 156             if ( !rp1.contains( rp ) ) {
 157                 return false;
 158             }
 159         }
 160         return true;
 161     }
 162 }
 163
 164 bool Nepomuk::Search::Query::operator==( const Query& other ) const
 165 {
 166     if ( d->type == other.d->type &&
 167          d->limit == other.d->limit ) {
 168         if ( d->type == SPARQLQuery ) {
 169             return( d->sparqlQuery == other.d->sparqlQuery &&
 170                     compareRequestProperties( d->requestProperties, other.d->requestProperties ) );
 171         }
 172         else {
 173             return( d->term == other.d->term &&
 174                     compareRequestProperties( d->requestProperties, other.d->requestProperties ) );
 175         }
 176     }
 177
 178     return false;
 179 }
 180
 181
 182 QDebug operator<<( QDebug dbg, const Nepomuk::Search::Query& query )
 183 {
 184     dbg << "(Query" << query.term() << query.limit() << ")";
 185     return dbg;
 186 }
 187
 188
 189 uint Nepomuk::Search::qHash( const Nepomuk::Search::Query& query )
 190 {
 191     if ( query.type() == Nepomuk::Search::Query::SPARQLQuery )
 192         return qHash( query.sparqlQuery() );
 193     else
 194         return qHash( query.term() );
 195 }