Soprano::Node NG::CopyVisitor::vertexProxy(const Soprano::Node & node)
{
if(node.isBlank())
return node;
if(node.isLiteral())
return node;
Soprano::Node answer;
QHash< QUrl, QUrl >::const_iterator it =
d->proxyUrls->find(node.uri());
if(it == d->proxyUrls->end()) {
// Create new
// Create new url
// FIXME What label should be passed to the generateUniqueUri
answer = Soprano::Node(
d->targetManager->generateUniqueUri("unknown")
);
Q_ASSERT(!answer.uri().isEmpty());
// Add to table
//kDebug() << "Adding proxy to " << node.uri() << " : " << answer.uri();
d->proxyUrls->insert(node.uri(), answer.uri());
} else {
answer = Soprano::Node(it.value());
}
return answer;
}
QString getId( const Soprano::Node& node ) {
if ( node.isResource() ) {
return QString::fromLatin1( node.uri().toEncoded() );
}
else if ( node.isBlank() ) {
return bnodeIdPrefix() + node.toString();
}
else {
return QString();
}
}
QString NG::DotVisitor::vertexDescription(const Soprano::Node & node)
{
if(node.isBlank()) {
static QString blank("blank");
return blank;
} else if(node.isLiteral())
return node.toString().replace('\"', "'");
else { // Node is resource
return node.uri().toString();
}
}
QString NG::DotVisitor::vertexID(const Soprano::Node & node)
{
if(node.isBlank()) {
static QString blankTemplate("blank%1");
d->vnum++;
return blankTemplate.arg(QString::number(d->vnum));
} else {
QHash< Soprano::Node , int >::const_iterator fit =
d->vertices.find(node);
if(fit == d->vertices.end()) {
// Write new node
d->vnum++;
d->vertices.insert(node, d->vnum);
return QString::number(d->vnum);
} else {
return QString::number(fit.value());
}
}
}