annotate rdf/PluginRDFDescription.cpp @ 718:f3fd2988fc9b

Fix incorrect query structure for output type URIs. This led to some output RDF features being written with type URIs intended for different outputs. Also revert some SVDEBUGs to cerrs -- they are intended as user-visible errors or warnings rather than debug

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2008 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 "PluginRDFDescription.h"

#include "PluginRDFIndexer.h"
#include "SimpleSPARQLQuery.h"

#include "base/Profiler.h"

#include "plugin/PluginIdentifier.h"

#include <iostream>
using std::cerr;
using std::endl;

PluginRDFDescription::PluginRDFDescription(QString pluginId) :
    m_pluginId(pluginId),
    m_haveDescription(false)
{
    PluginRDFIndexer *indexer = PluginRDFIndexer::getInstance();
    m_pluginUri = indexer->getURIForPluginId(pluginId);
    if (m_pluginUri == "") {
        cerr << "PluginRDFDescription: WARNING: No RDF description available for plugin ID \""
             << pluginId << "\"" << endl;
    } else {
        // All the data we need should be in our RDF model already:
        // if it's not there, we don't know where to find it anyway
        if (index()) {
            m_haveDescription = true;
        }
    }
}

PluginRDFDescription::~PluginRDFDescription()
{
}

bool
PluginRDFDescription::haveDescription() const
{
    return m_haveDescription;
}

QString
PluginRDFDescription::getPluginName() const
{
    return m_pluginName;
}

QString
PluginRDFDescription::getPluginDescription() const
{
    return m_pluginDescription;
}

QString
PluginRDFDescription::getPluginMaker() const
{
    return m_pluginMaker;
}

QString
PluginRDFDescription::getPluginInfoURL() const
{
    return m_pluginInfoURL;
}

QStringList
PluginRDFDescription::getOutputIds() const
{
    QStringList ids;
    for (OutputDispositionMap::const_iterator i = m_outputDispositions.begin();
         i != m_outputDispositions.end(); ++i) {
        ids.push_back(i->first);
    }
    return ids;
}

QString
PluginRDFDescription::getOutputName(QString outputId) const
{
    if (m_outputNames.find(outputId) == m_outputNames.end()) {
        return "";
    } 
    return m_outputNames.find(outputId)->second;
}

PluginRDFDescription::OutputDisposition
PluginRDFDescription::getOutputDisposition(QString outputId) const
{
    if (m_outputDispositions.find(outputId) == m_outputDispositions.end()) {
        return OutputDispositionUnknown;
    }
    return m_outputDispositions.find(outputId)->second;
}

QString
PluginRDFDescription::getOutputEventTypeURI(QString outputId) const
{
    if (m_outputEventTypeURIMap.find(outputId) ==
        m_outputEventTypeURIMap.end()) {
        return "";
    }
    return m_outputEventTypeURIMap.find(outputId)->second;
}

QString
PluginRDFDescription::getOutputFeatureAttributeURI(QString outputId) const
{
    if (m_outputFeatureAttributeURIMap.find(outputId) ==
        m_outputFeatureAttributeURIMap.end()) {
        return "";
    }
    return m_outputFeatureAttributeURIMap.find(outputId)->second;
}

QString
PluginRDFDescription::getOutputSignalTypeURI(QString outputId) const
{
    if (m_outputSignalTypeURIMap.find(outputId) ==
        m_outputSignalTypeURIMap.end()) {
        return "";
    }
    return m_outputSignalTypeURIMap.find(outputId)->second;
}

QString
PluginRDFDescription::getOutputUnit(QString outputId) const
{
    if (m_outputUnitMap.find(outputId) == m_outputUnitMap.end()) {
        return "";
    }
    return m_outputUnitMap.find(outputId)->second;
}

QString
PluginRDFDescription::getOutputUri(QString outputId) const
{
    if (m_outputUriMap.find(outputId) == m_outputUriMap.end()) {
        return "";
    }
    return m_outputUriMap.find(outputId)->second;
}

bool
PluginRDFDescription::index() 
{
    Profiler profiler("PluginRDFDescription::index");

    bool success = true;
    if (!indexMetadata()) success = false;
    if (!indexOutputs()) success = false;

    return success;
}

bool
PluginRDFDescription::indexMetadata()
{
    Profiler profiler("PluginRDFDescription::index");

    SimpleSPARQLQuery::QueryType m = SimpleSPARQLQuery::QueryFromModel;

    QString queryTemplate =
        QString(
            " PREFIX vamp: <http://purl.org/ontology/vamp/> "
            " PREFIX foaf: <http://xmlns.com/foaf/0.1/> "
            " PREFIX dc: <http://purl.org/dc/elements/1.1/> "
            " SELECT ?%3 "
            " WHERE { "
            "   <%1> %2 ?%3 . "
            " }")
        .arg(m_pluginUri);

    SimpleSPARQLQuery::Value v;

    v = SimpleSPARQLQuery::singleResultQuery
        (m, queryTemplate.arg("vamp:name").arg("name"), "name");
    
    if (v.type == SimpleSPARQLQuery::LiteralValue && v.value != "") {
        m_pluginName = v.value;
    }

    v = SimpleSPARQLQuery::singleResultQuery
        (m, queryTemplate.arg("dc:description").arg("description"), "description");
    
    if (v.type == SimpleSPARQLQuery::LiteralValue && v.value != "") {
        m_pluginDescription = v.value;
    }

    v = SimpleSPARQLQuery::singleResultQuery
        (m,
         QString(
            " PREFIX vamp: <http://purl.org/ontology/vamp/> "
            " PREFIX foaf: <http://xmlns.com/foaf/0.1/> "
            " SELECT ?name "
            " WHERE { "
            "   <%1> foaf:maker ?maker . "
            "   ?maker foaf:name ?name . "
            " }")
         .arg(m_pluginUri),
         "name");
    
    if (v.type == SimpleSPARQLQuery::LiteralValue && v.value != "") {
        m_pluginMaker = v.value;
    }

    // If we have a more-information URL for this plugin, then we take
    // that.  Otherwise, a more-information URL for the plugin
    // library would do nicely.  Failing that, we could perhaps use
    // any foaf:page URL at all that appears in the file -- but
    // perhaps that would be unwise

    v = SimpleSPARQLQuery::singleResultQuery
        (m,
         QString(
            " PREFIX vamp: <http://purl.org/ontology/vamp/> "
            " PREFIX foaf: <http://xmlns.com/foaf/0.1/> "
            " SELECT ?page "
            " WHERE { "
            "   <%1> foaf:page ?page . "
            " }")
         .arg(m_pluginUri),
         "page");

    if (v.type == SimpleSPARQLQuery::URIValue && v.value != "") {

        m_pluginInfoURL = v.value;

    } else {

        v = SimpleSPARQLQuery::singleResultQuery
            (m,
             QString(
                " PREFIX vamp: <http://purl.org/ontology/vamp/> "
                " PREFIX foaf: <http://xmlns.com/foaf/0.1/> "
                " SELECT ?page "
                " WHERE { "
                "   ?library vamp:available_plugin <%1> ; "
                "            a vamp:PluginLibrary ; "
                "            foaf:page ?page . "
                " }")
             .arg(m_pluginUri),
             "page");

        if (v.type == SimpleSPARQLQuery::URIValue && v.value != "") {

            m_pluginInfoURL = v.value;
        }
    }

    return true;
}

bool
PluginRDFDescription::indexOutputs()
{
    Profiler profiler("PluginRDFDescription::indexOutputs");
    
    SimpleSPARQLQuery::QueryType m = SimpleSPARQLQuery::QueryFromModel;

    SimpleSPARQLQuery query
        (m,
         QString
         (
             " PREFIX vamp: <http://purl.org/ontology/vamp/> "

             " SELECT ?output "

             " WHERE { "
             "   <%1> vamp:output ?output . "
             " } "
             )
         .arg(m_pluginUri));

    SimpleSPARQLQuery::ResultList results = query.execute();

    if (!query.isOK()) {
        cerr << "ERROR: PluginRDFDescription::index: ERROR: Failed to query outputs for <"
             << m_pluginUri << ">: "
             << query.getErrorString() << endl;
        return false;
    }

    if (results.empty()) {
        cerr << "ERROR: PluginRDFDescription::indexURL: NOTE: No outputs defined for <"
             << m_pluginUri << ">" << endl;
        return false;
    }

    // Note that an output may appear more than once, if it inherits
    // more than one type (e.g. DenseOutput and QuantizedOutput).  So
    // these results must accumulate

    for (int i = 0; i < results.size(); ++i) {

        if (results[i]["output"].type != SimpleSPARQLQuery::URIValue ||
            results[i]["output"].value == "") {
            cerr << "ERROR: PluginRDFDescription::indexURL: No valid URI for output " << i << " of plugin <" << m_pluginUri << ">" << endl;
            return false;
        }

        QString outputUri = results[i]["output"].value;

        SimpleSPARQLQuery::Value v;

        v = SimpleSPARQLQuery::singleResultQuery
            (m, 
             QString(" PREFIX vamp: <http://purl.org/ontology/vamp/> "
                     " SELECT ?output_id "
                     " WHERE { <%1> vamp:identifier ?output_id } ")
             .arg(outputUri), "output_id");

        if (v.type != SimpleSPARQLQuery::LiteralValue || v.value == "") {
            cerr << "ERROR: PluginRDFDescription::indexURL: No identifier for output <" << outputUri << ">" << endl;
            return false;
        }
        QString outputId = v.value;

        v = SimpleSPARQLQuery::singleResultQuery
            (m, 
             QString(" PREFIX vamp: <http://purl.org/ontology/vamp/> "
                     " SELECT ?output_type "
                     " WHERE { <%1> a ?output_type } ")
             .arg(outputUri), "output_type");

        QString outputType;
        if (v.type == SimpleSPARQLQuery::URIValue) outputType = v.value;

        v = SimpleSPARQLQuery::singleResultQuery
            (m, 
             QString(" PREFIX vamp: <http://purl.org/ontology/vamp/> "
                     " SELECT ?unit "
                     " WHERE { <%1> vamp:unit ?unit } ")
             .arg(outputUri), "unit");

        QString outputUnit;
        if (v.type == SimpleSPARQLQuery::LiteralValue) outputUnit = v.value;

        m_outputUriMap[outputId] = outputUri;

        if (outputType.contains("DenseOutput")) {
            m_outputDispositions[outputId] = OutputDense;
        } else if (outputType.contains("SparseOutput")) {
            m_outputDispositions[outputId] = OutputSparse;
        } else if (outputType.contains("TrackLevelOutput")) {
            m_outputDispositions[outputId] = OutputTrackLevel;
        } else {
            m_outputDispositions[outputId] = OutputDispositionUnknown;
        }
            
        if (outputUnit != "") {
            m_outputUnitMap[outputId] = outputUnit;
        }

        v = SimpleSPARQLQuery::singleResultQuery
            (m, 
             QString(" PREFIX vamp: <http://purl.org/ontology/vamp/> "
                     " PREFIX dc: <http://purl.org/dc/elements/1.1/> "
                     " SELECT ?title "
                     " WHERE { <%1> dc:title ?title } ")
             .arg(outputUri), "title");

        if (v.type == SimpleSPARQLQuery::LiteralValue && v.value != "") {
            m_outputNames[outputId] = v.value;
        }

        QString queryTemplate = 
            QString(" PREFIX vamp: <http://purl.org/ontology/vamp/> "
                    " SELECT ?%2 "
                    " WHERE { <%1> vamp:computes_%2 ?%2 } ")
            .arg(outputUri);

        v = SimpleSPARQLQuery::singleResultQuery
            (m, queryTemplate.arg("event_type"), "event_type");

        if (v.type == SimpleSPARQLQuery::URIValue && v.value != "") {
            m_outputEventTypeURIMap[outputId] = v.value;
        }

        v = SimpleSPARQLQuery::singleResultQuery
            (m, queryTemplate.arg("feature"), "feature");

        if (v.type == SimpleSPARQLQuery::URIValue && v.value != "") {
            m_outputFeatureAttributeURIMap[outputId] = v.value;
        }           

        v = SimpleSPARQLQuery::singleResultQuery
            (m, queryTemplate.arg("signal_type"), "signal_type");

        if (v.type == SimpleSPARQLQuery::URIValue && v.value != "") {
            m_outputSignalTypeURIMap[outputId] = v.value;
        }
    }

    return true;
}