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1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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2
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3 /*
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4 Sonic Visualiser
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5 An audio file viewer and annotation editor.
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6 Centre for Digital Music, Queen Mary, University of London.
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7 This file copyright 2008 QMUL.
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8
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9 This program is free software; you can redistribute it and/or
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10 modify it under the terms of the GNU General Public License as
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11 published by the Free Software Foundation; either version 2 of the
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12 License, or (at your option) any later version. See the file
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13 COPYING included with this distribution for more information.
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14 */
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15
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16 #ifndef _RDF_TRANSFORM_FACTORY_H_
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17 #define _RDF_TRANSFORM_FACTORY_H_
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18
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19 #include <QObject>
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20 #include <QString>
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21
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22 #include <vector>
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23
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24 #include "transform/Transform.h"
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25
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26 class RDFTransformFactoryImpl;
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27 class ProgressReporter;
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28
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29 class RDFTransformFactory : public QObject
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30 {
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31 Q_OBJECT
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32
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33 public:
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34 static QString getKnownExtensions();
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35
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36 RDFTransformFactory(QString url);
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37 virtual ~RDFTransformFactory();
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38
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39 /** isRDF() may be queried at any point after construction. It
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40 returns true if the file was parseable as RDF.
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41 */
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42 bool isRDF();
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43
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44 /** isOK() may be queried at any point after getTransforms() has
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45 been called. It is true if the file was parseable as RDF and
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46 any transforms in it could be completely constructed.
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47
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48 Note that even if isOK() returns true, it is still possible
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49 that the file did not define any transforms; in this case,
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50 getTransforms() would have returned an empty list.
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51
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52 If isOK() is called before getTransforms() has been invoked to
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53 query the file, it will return true iff isRDF() is true.
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54 */
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55 bool isOK();
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56
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57 /** Return any error string resulting from loading or querying the
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58 file. This will be non-empty if isRDF() or isOK() returns
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59 false.
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60 */
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61 QString getErrorString() const;
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62
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63 std::vector<Transform> getTransforms(ProgressReporter *reporter);
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64
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65 static QString writeTransformToRDF(const Transform &, QString uri);
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66
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67 protected:
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68 RDFTransformFactoryImpl *m_d;
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69 };
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70
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71 #endif
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