Mercurial > hg > sonic-annotator

changeset 223:f4315a0ade89 json-ld

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added JSON-LD feature writer files
author alo
date Mon, 22 Feb 2016 14:27:19 +0000
parents 6153429ebf89
children d582d5662010
files runner.pro runner/FeatureWriterFactory.cpp runner/JsonLDFeatureWriter.cpp runner/JsonLDFeatureWriter.h
diffstat 4 files changed, 660 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/runner.pro	Sat Jan 30 12:11:47 2016 +0000
+++ b/runner.pro	Mon Feb 22 14:27:19 2016 +0000
@@ -101,7 +101,8 @@
         runner/JAMSFeatureWriter.h \
         runner/LabFeatureWriter.h \
         runner/MIDIFeatureWriter.h \
-        runner/MultiplexedReader.h
+        runner/MultiplexedReader.h \
+    runner/JsonLDFeatureWriter.h
 
 SOURCES += \
         vamp-plugin-sdk/src/vamp-hostsdk/PluginBufferingAdapter.cpp \
@@ -120,7 +121,8 @@
         runner/JAMSFeatureWriter.cpp \
         runner/LabFeatureWriter.cpp \
         runner/MIDIFeatureWriter.cpp \
-        runner/MultiplexedReader.cpp
+        runner/MultiplexedReader.cpp \
+    runner/JsonLDFeatureWriter.cpp
 
 !win32 {
     QMAKE_POST_LINK=/bin/bash tests/test.sh
--- a/runner/FeatureWriterFactory.cpp	Sat Jan 30 12:11:47 2016 +0000
+++ b/runner/FeatureWriterFactory.cpp	Mon Feb 22 14:27:19 2016 +0000
@@ -25,6 +25,7 @@
 #include "MIDIFeatureWriter.h"
 #include "JAMSFeatureWriter.h"
 #include "LabFeatureWriter.h"
+#include "JsonLDFeatureWriter.h"
 
 set<string>
 FeatureWriterFactory::getWriterTags()
@@ -37,6 +38,7 @@
     tags.insert("lab");
     tags.insert("midi");
     tags.insert("jams");
+    tags.insert("jsld");
     return tags;
 }
 
@@ -57,6 +59,8 @@
         return new MIDIFeatureWriter();
     } else if (tag == "jams") {
         return new JAMSFeatureWriter();
+    } else if (tag == "jsld") {
+        return new JsonLDFeatureWriter();
     }
 
     return 0;
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/runner/JsonLDFeatureWriter.cpp	Mon Feb 22 14:27:19 2016 +0000
@@ -0,0 +1,540 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Annotator
+    A utility for batch feature extraction from audio files.
+    Mark Levy, Chris Sutton and Chris Cannam, Queen Mary, University of London.
+    Copyright 2007-2014 QMUL.
+
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#include "JsonLDFeatureWriter.h"
+
+using namespace std;
+using Vamp::Plugin;
+using Vamp::PluginBase;
+
+#include "base/Exceptions.h"
+#include "rdf/PluginRDFIndexer.h"
+
+#include <QFileInfo>
+#include <QTextCodec>
+#include <QUuid>
+
+#include "version.h"
+
+JsonLDFeatureWriter::JsonLDFeatureWriter() :
+    FileFeatureWriter(SupportOneFilePerTrackTransform |
+                      SupportOneFilePerTrack |
+                      SupportOneFileTotal |
+		      SupportStdOut,
+                      "json"),
+    m_network(false),
+    m_networkRetrieved(false),
+    m_n(1),
+    m_m(1),
+    m_digits(6)
+{
+}
+
+JsonLDFeatureWriter::~JsonLDFeatureWriter()
+{
+}
+
+string
+JsonLDFeatureWriter::getDescription() const
+{
+    return "Write features to JSON files in JSON-LD format. WARNING: This is a provisional implementation! The output format may change in future releases to comply more effectively with the specification. Please report any problems you find with the current implementation.";
+}
+
+JsonLDFeatureWriter::ParameterList
+JsonLDFeatureWriter::getSupportedParameters() const
+{
+    ParameterList pl = FileFeatureWriter::getSupportedParameters();
+    Parameter p;
+
+    p.name = "digits";
+    p.description = "Specify the number of significant digits to use when printing transform outputs. Outputs are represented internally using single-precision floating-point, so digits beyond the 8th or 9th place are usually meaningless. The default is 6.";
+    p.hasArg = true;
+    pl.push_back(p);
+
+    p.name = "network";
+    p.description = "Attempt to retrieve RDF descriptions of plugins from network, if not available locally.";
+    p.hasArg = false;
+    pl.push_back(p);
+
+    return pl;
+}
+
+void
+JsonLDFeatureWriter::setParameters(map<string, string> &params)
+{
+    FileFeatureWriter::setParameters(params);
+
+    for (map<string, string>::iterator i = params.begin();
+         i != params.end(); ++i) {
+        if (i->first == "network") {
+            m_network = true;
+        } else if (i->first == "digits") {
+            int digits = atoi(i->second.c_str());
+            if (digits <= 0 || digits > 100) {
+                cerr << "JsonLDFeatureWriter: ERROR: Invalid or out-of-range value for number of significant digits: " << i->second << endl;
+                cerr << "JsonLDFeatureWriter: NOTE: Continuing with default settings" << endl;
+            } else {
+                m_digits = digits;
+            }
+        }
+    }
+}
+
+void
+JsonLDFeatureWriter::setTrackMetadata(QString trackId, TrackMetadata metadata)
+{
+    m_trackMetadata[trackId] = metadata;
+}
+
+static double
+realTime2Sec(const Vamp::RealTime &r)
+{
+    return r / Vamp::RealTime(1, 0);
+}
+
+void
+JsonLDFeatureWriter::write(QString trackId,
+			 const Transform &transform,
+			 const Plugin::OutputDescriptor& ,
+			 const Plugin::FeatureList& features,
+			 std::string /* summaryType */)
+{
+    QString transformId = transform.getIdentifier();
+
+    QTextStream *sptr = getOutputStream
+        (trackId, transformId, QTextCodec::codecForName("UTF-8"));
+    if (!sptr) {
+        throw FailedToOpenOutputStream(trackId, transformId);
+    }
+
+    DataId did(trackId, transform);
+
+    if (m_data.find(did) == m_data.end()) {
+	identifyTask(transform);
+        m_streamTracks[sptr].insert(trackId);
+        m_streamTasks[sptr].insert(m_tasks[transformId]);
+        m_streamData[sptr].insert(did);
+    }
+
+    if (m_trackTimelineGuids.find(trackId) == m_trackTimelineGuids.end()) {
+        QUuid uuid = QUuid::createUuid();
+        m_trackTimelineGuids[trackId] = QString(uuid.toString().replace("{", "").replace("}", ""));
+    }
+
+    QString d = m_data[did];
+
+    for (int i = 0; i < int(features.size()); ++i) {
+
+        if (d != "") {
+            d += ",\n";
+        }
+        
+        d += "\t\t\t{ ";
+	
+        Plugin::Feature f(features[i]);
+
+        QString timestr = f.timestamp.toString().c_str();
+        timestr.replace(QRegExp("^ +"), "");
+
+        QString durstr = "0.0";
+        if (f.hasDuration) {
+            durstr = f.duration.toString().c_str();
+            durstr.replace(QRegExp("^ +"), "");
+            d += " \"@type\": \"tl:Interval\", ";
+        }
+        else{
+            d += " \"@type\": \"tl:Instant\", ";
+        }
+        
+        d += QString("\"tl:at\": %1 ")
+            .arg(timestr);
+
+        d += QString(", \"tl:timeline\": \"%1\" ")
+            .arg(m_trackTimelineGuids[trackId]);
+
+        if (f.hasDuration) {
+            d += QString(", \"tl:duration\": %2")
+                .arg(durstr);
+        }
+        
+        if (f.label != "") {
+            if (f.values.empty()) {
+                d += QString(", \"afo:value\": \"%2\"").arg(f.label.c_str());
+            } else {
+                d += QString(", \"rdfs:label\": \"%2\"").arg(f.label.c_str());
+            }
+        }
+
+        if (!f.values.empty()) {
+            d += QString(", \"afo:value\": ");
+            if (f.values.size() > 1) {
+                d += "[ ";
+            }
+            for (int j = 0; j < int(f.values.size()); ++j) {
+                if (isnan(f.values[j])) {
+                    d += "\"NaN\"";
+                } else if (isinf(f.values[j])) {
+                    d += "\"Inf\"";
+                } else {
+                    d += QString("%1").arg(f.values[j], 0, 'g', m_digits);
+                }
+                if (j + 1 < int(f.values.size())) {
+                    d += ", ";
+                }
+            }
+            if (f.values.size() > 1) {
+                d += " ]";
+            }
+        }
+            
+        d += " }";
+    }	
+
+    m_data[did] = d;
+}
+
+void
+JsonLDFeatureWriter::setNofM(int n, int m)
+{
+    if (m_singleFileName != "" || m_stdout) {
+        m_n = n;
+        m_m = m;
+    } else {
+        m_n = 1;
+        m_m = 1;
+    }
+}
+
+void
+JsonLDFeatureWriter::finish()
+{
+    for (FileStreamMap::const_iterator stri = m_streams.begin();
+	 stri != m_streams.end(); ++stri) {
+
+        QTextStream *sptr = stri->second;
+        QTextStream &stream = *sptr;
+
+        bool firstInStream = true;
+
+        for (TrackIds::const_iterator tri = m_streamTracks[sptr].begin();
+             tri != m_streamTracks[sptr].end(); ++tri) {
+
+            TrackId trackId = *tri;
+
+            if (firstInStream) {
+                if (m_streamTracks[sptr].size() > 1 || (m_m > 1 && m_n == 1)) {
+                    stream << "[\n";
+                }
+            }
+
+            if (!firstInStream || (m_m > 1 && m_n > 1)) {
+                stream << ",\n";
+            }
+
+            stream << "{\n" << writeContext();
+            stream << "\t\"@type\": \"mo:Track\",\n"
+                   << QString("\t\"mo:available_as\": \"%1\"").arg(QFileInfo(trackId).filePath());
+
+            if (m_trackMetadata.find(trackId) != m_trackMetadata.end()) {
+
+                if (m_trackMetadata[trackId].title != "") {
+                    stream << QString(",\n\t\"dc:title\": \"%1\"")
+                        .arg(m_trackMetadata[trackId].title);
+                }
+
+                if (m_trackMetadata[trackId].maker != "") {
+                    stream << QString(",\n\t\"mo:artist\": { "
+                                      "\t\t\"@type\": \"mo:MusicArtist\",\n"
+                                      "\t\t\"foaf:name\": \"%1\" "
+                                      "\t}")
+                        .arg(m_trackMetadata[trackId].maker);
+                }
+
+                QString durstr = m_trackMetadata[trackId].duration.toString().c_str();
+                durstr.replace(QRegExp("^ +"), "");
+                stream << QString(",\n\t\"mo:encodes\": {\n"
+                                  "\t\t\"@type\": \"mo:Signal\",\n"
+                                  "\t\t\"mo:time\": {\n "
+                                  "\t\t\t\"@type\": \"tl:Interval\",\n"
+                                  "\t\t\t\"tl:duration\": \"PT%1S\",\n"
+                                  "\t\t\t\"tl:timeline\": { \"@type\": \"tl:Timeline\", \"@id\": \"%2\" } "
+                                  "\n\t\t}").arg(durstr).arg(m_trackTimelineGuids[trackId]);
+            }
+
+            stream << "\n\t},\n";
+            stream << "\t\"afo:features\": [\n";
+
+            bool firstInTrack = true;
+
+            for (Tasks::const_iterator ti = m_streamTasks[sptr].begin();
+                 ti != m_streamTasks[sptr].end(); ++ti) {
+                
+                Task task = *ti;
+
+                for (DataIds::const_iterator di = m_streamData[sptr].begin();
+                     di != m_streamData[sptr].end(); ++di) {
+                    
+                    DataId did = *di;
+
+                    QString trackId = did.first;
+                    Transform transform = did.second;
+
+                    if (m_tasks[transform.getIdentifier()] != task) continue;
+
+                    QString data = m_data[did];
+
+                    if (!firstInTrack) {
+                        stream << ",\n";
+                    }
+
+                    stream << QString
+                        ("\t{\n"
+                         "\t\t\"@type\": \"afv:%1\",\n"
+                         "\t\t\"afo:computed_by\": {\n"
+                         "%2\t\t},\n"
+                         "\t\t\"afo:values\": [\n")
+                        .arg(transform.getOutput().replace(0, 1, transform.getOutput().at(0).toUpper()))
+                        .arg(writeTransformToObjectContents(transform));
+
+                    stream << data;
+
+                    stream << "\n\t\t]\n\t}";
+                    firstInTrack = false;
+                }
+            }
+
+            stream << "\n\t]";
+
+            stream << "\n}";
+            firstInStream = false;
+        }
+
+        if (!firstInStream) {
+            if (m_streamTracks[sptr].size() > 1 || (m_m > 1 && m_n == m_m)) {
+                stream << "\n\t]";
+            }
+            stream << "\n";
+        }
+    }
+        
+    m_streamTracks.clear();
+    m_streamTasks.clear();
+    m_streamData.clear();
+    m_data.clear();
+
+    FileFeatureWriter::finish();
+}
+
+void
+JsonLDFeatureWriter::loadRDFDescription(const Transform &transform)
+{
+    QString pluginId = transform.getPluginIdentifier();
+    if (m_rdfDescriptions.find(pluginId) != m_rdfDescriptions.end()) return;
+
+    if (m_network && !m_networkRetrieved) {
+	PluginRDFIndexer::getInstance()->indexConfiguredURLs();
+	m_networkRetrieved = true;
+    }
+
+    m_rdfDescriptions[pluginId] = PluginRDFDescription(pluginId);
+    
+    if (m_rdfDescriptions[pluginId].haveDescription()) {
+	cerr << "NOTE: Have RDF description for plugin ID \""
+	     << pluginId << "\"" << endl;
+    } else {
+	cerr << "NOTE: No RDF description for plugin ID \""
+	     << pluginId << "\"" << endl;
+	if (!m_network) {
+	    cerr << "      Consider using the --jams-network option to retrieve plugin descriptions"  << endl;
+	    cerr << "      from the network where possible." << endl;
+	}
+    }
+}
+
+void
+JsonLDFeatureWriter::identifyTask(const Transform &transform)
+{
+    QString transformId = transform.getIdentifier();
+    if (m_tasks.find(transformId) != m_tasks.end()) return;
+
+    loadRDFDescription(transform);
+    
+    Task task = UnknownTask;
+
+    QString pluginId = transform.getPluginIdentifier();
+    QString outputId = transform.getOutput();
+
+    const PluginRDFDescription &desc = m_rdfDescriptions[pluginId];
+    
+    if (desc.haveDescription()) {
+
+	PluginRDFDescription::OutputDisposition disp = 
+	    desc.getOutputDisposition(outputId);
+
+	QString af = "http://purl.org/ontology/af/";
+	    
+	if (disp == PluginRDFDescription::OutputSparse) {
+
+	    QString eventUri = desc.getOutputEventTypeURI(outputId);
+
+	    //!!! todo: allow user to prod writer for task type
+
+	    if (eventUri == af + "Note") {
+		task = NoteTask;
+	    } else if (eventUri == af + "Beat") {
+		task = BeatTask;
+	    } else if (eventUri == af + "ChordSegment") {
+		task = ChordTask;
+	    } else if (eventUri == af + "KeyChange") {
+		task = KeyTask;
+	    } else if (eventUri == af + "KeySegment") {
+		task = KeyTask;
+	    } else if (eventUri == af + "Onset") {
+		task = OnsetTask;
+	    } else if (eventUri == af + "NonTonalOnset") {
+		task = OnsetTask;
+	    } else if (eventUri == af + "Segment") {
+		task = SegmentTask;
+	    } else if (eventUri == af + "SpeechSegment") {
+		task = SegmentTask;
+	    } else if (eventUri == af + "StructuralSegment") {
+		task = SegmentTask;
+	    } else {
+		cerr << "WARNING: Unsupported event type URI <" 
+		     << eventUri << ">, proceeding with UnknownTask type"
+		     << endl;
+	    }
+
+	} else {
+
+	    cerr << "WARNING: Cannot currently write dense or track-level outputs to JAMS format (only sparse ones). Will proceed using UnknownTask type, but this probably isn't going to work" << endl;
+	}
+    }	    
+
+    m_tasks[transformId] = task;
+}
+
+QString
+JsonLDFeatureWriter::getTaskKey(Task task)
+{
+    switch (task) {
+    case UnknownTask: return "unknown";
+    case BeatTask: return "beat";
+    case OnsetTask: return "onset";
+    case ChordTask: return "chord";
+    case SegmentTask: return "segment";
+    case KeyTask: return "key";
+    case NoteTask: return "note";
+    case MelodyTask: return "melody";
+    case PitchTask: return "pitch";
+    }
+    return "unknown";
+}
+
+QString
+JsonLDFeatureWriter::writeTransformToObjectContents(const Transform &t)
+{
+    QString json;
+    QString stpl("\t\t\t\"%1\": \"%2\",\n");
+    QString ntpl("\t\t\t\"%1\": %2,\n");
+
+    json += stpl.arg("@type").arg("vamp:Transform");
+    json += stpl.arg("vamp:plugin_id").arg(t.getPluginIdentifier());
+    json += stpl.arg("vamp:output_id").arg(t.getOutput());
+
+    if (t.getSummaryType() != Transform::NoSummary) {
+        json += stpl.arg("vamp:summary_type")
+            .arg(Transform::summaryTypeToString(t.getSummaryType()));
+    }
+
+    if (t.getPluginVersion() != QString()) {
+        json += stpl.arg("vamp:plugin_version").arg(t.getPluginVersion());
+    }
+
+    if (t.getProgram() != QString()) {
+        json += stpl.arg("vamp:program").arg(t.getProgram());
+    }
+
+    if (t.getStepSize() != 0) {
+        json += ntpl.arg("vamp:step_size").arg(t.getStepSize());
+    }
+
+    if (t.getBlockSize() != 0) {
+        json += ntpl.arg("vamp:block_size").arg(t.getBlockSize());
+    }
+
+    if (t.getWindowType() != HanningWindow) {
+        json += stpl.arg("vamp:window_type")
+            .arg(Window<float>::getNameForType(t.getWindowType()).c_str());
+    }
+
+    if (t.getStartTime() != RealTime::zeroTime) {
+        json += ntpl.arg("tl:start")
+            .arg(t.getStartTime().toDouble(), 0, 'g', 9);
+    }
+
+    if (t.getDuration() != RealTime::zeroTime) {
+        json += ntpl.arg("tl:duration")
+            .arg(t.getDuration().toDouble(), 0, 'g', 9);
+    }
+
+    if (t.getSampleRate() != 0) {
+        json += ntpl.arg("vamp:sample_rate").arg(t.getSampleRate());
+    }
+
+    if (!t.getParameters().empty()) {
+        json += QString("\t\t\t\"vamp:parameter_binding\": [\n");
+        Transform::ParameterMap parameters = t.getParameters();
+        for (Transform::ParameterMap::const_iterator i = parameters.begin();
+             i != parameters.end(); ++i) {
+            if (i != parameters.begin()) {
+                json += ",\n";
+            }
+            QString name = i->first;
+            float value = i->second;
+            json += QString("\t\t\t\t{\n");
+            json += QString("\t\t\t\t\t\"@type\": \"vamp:Parameter\",\n");
+            json += QString("\t\t\t\t\t\"vamp:identifier\": \"%1\",\n").arg(name);
+            json += QString("\t\t\t\t\t\"vamp:value\": %1").arg(value, 0, 'g', 8);
+            json += QString("\n\t\t\t\t}");
+        }
+        json += QString("\n\t\t\t],\n");
+    }
+
+    // no trailing comma on final property:
+    json += QString("\t\t\t\"vamp:transform_id\": \"%1\",\n").arg(t.getIdentifier());
+    json += QString("\t\t\t\"afo:implemented_in\": {\n");
+    json += QString("\t\t\t\t\"@type\": \"afo:SoftwareAgent\",\n");
+    json += QString("\t\t\t\t\"afo:name\": \"Sonic Annotator\",\n");
+    json += QString("\t\t\t\t\"afo:version\": \"%1\" \n").arg(RUNNER_VERSION);
+    json += QString("\t\t\t}\n");
+
+    return json;
+}
+
+QString
+JsonLDFeatureWriter::writeContext() {
+    QString context;
+    context += QString("\t\"@context\": {\n");
+    context += QString("\t\t\"foaf\": \"http://xmlns.com/foaf/0.1/\",\n");
+    context += QString("\t\t\"afo\": \"http://sovarr.c4dm.eecs.qmul.ac.uk/af/ontology/1.1#\",\n");
+    context += QString("\t\t\"afv\": \"http://sovarr.c4dm.eecs.qmul.ac.uk/af/vocabulary/1.1#\",\n");
+    context += QString("\t\t\"mo\": \"http://purl.org/ontology/mo/\",\n");
+    context += QString("\t\t\"dc\": \"http://purl.org/dc/elements/1.1/\",\n");
+    context += QString("\t\t\"tl\": \"http://purl.org/NET/c4dm/timeline.owl#\",\n");
+    context += QString("\t\t\"vamp\": \"http://purl.org/ontology/vamp/\"\n");
+    context += QString("\t},\n");
+    return context;
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/runner/JsonLDFeatureWriter.h	Mon Feb 22 14:27:19 2016 +0000
@@ -0,0 +1,112 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Annotator
+    A utility for batch feature extraction from audio files.
+
+    Mark Levy, Chris Sutton and Chris Cannam, Queen Mary, University of London.
+    Copyright 2007-2014 QMUL.
+
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#ifndef JSONLD_FEATURE_WRITER_H
+#define JSONLD_FEATURE_WRITER_H
+
+#include "transform/FileFeatureWriter.h"
+
+#include "rdf/PluginRDFDescription.h"
+
+class JsonLDFileWriter;
+
+class JsonLDFeatureWriter : public FileFeatureWriter
+{
+public:
+    JsonLDFeatureWriter();
+    virtual ~JsonLDFeatureWriter();
+
+    string getDescription() const;
+
+    virtual ParameterList getSupportedParameters() const;
+    virtual void setParameters(map<string, string> &params);
+
+    virtual void setTrackMetadata(QString trackid, TrackMetadata metadata);
+
+    virtual void setNofM(int, int);
+    
+    virtual void write(QString trackid,
+                       const Transform &transform,
+                       const Vamp::Plugin::OutputDescriptor &output,
+                       const Vamp::Plugin::FeatureList &features,
+                       std::string summaryType = "");
+
+    virtual void finish();
+
+    virtual QString getWriterTag() const { return "jsld"; }
+
+private:
+    enum Task {
+	UnknownTask,
+	BeatTask,
+	OnsetTask,
+	ChordTask,
+	SegmentTask,
+	KeyTask,
+	NoteTask,
+	MelodyTask,
+	PitchTask,
+    };
+
+    typedef map<QString, PluginRDFDescription> RDFDescriptionMap; // by plugin id
+    RDFDescriptionMap m_rdfDescriptions;
+
+    typedef QString TrackId;
+    typedef pair<TrackId, Transform> DataId;
+
+    typedef map<TrackId, TrackMetadata> TrackMetadataMap;
+    TrackMetadataMap m_trackMetadata;
+
+    typedef map<TrackId, QString> TrackTimelineMap;
+    TrackTimelineMap m_trackTimelineGuids;
+
+    typedef set<TrackId> TrackIds;
+    typedef map<QTextStream *, TrackIds> StreamTrackMap;
+    StreamTrackMap m_streamTracks;
+
+    typedef set<Task> Tasks;
+    typedef map<QTextStream *, Tasks> StreamTaskMap;
+    StreamTaskMap m_streamTasks;
+
+    typedef set<DataId> DataIds;
+    typedef map<QTextStream *, DataIds> StreamDataMap;
+    StreamDataMap m_streamData;
+
+    typedef map<DataId, QString> DataMap;
+    DataMap m_data;
+
+    typedef map<TransformId, Task> TaskMap;
+    TaskMap m_tasks;
+
+    void loadRDFDescription(const Transform &);
+    void identifyTask(const Transform &);
+
+    QString getTaskKey(Task);
+
+    QString writeTransformToObjectContents(const Transform &);
+
+    QString writeContext();
+
+    std::string m_format;
+    bool m_network;
+    bool m_networkRetrieved;
+    int m_n;
+    int m_m;
+    int m_digits;
+};
+
+#endif
+