void declareDecomposition(const Decomposition& decomposition, std::ostream& out)
{
out << "% Decomposition facts" << std::endl;
out << "currentNode(" << decomposition.getNode().getGlobalId() << ")." << std::endl;
for(const auto& v : decomposition.getNode().getBag()) {
out << "bag(" << decomposition.getNode().getGlobalId() << ',' << v << "). ";
out << "current(" << v << ")." << std::endl;
}
out << "#const numChildNodes=" << decomposition.getChildren().size() << '.' << std::endl;
if(decomposition.getChildren().empty())
out << "initial." << std::endl;
else {
for(const auto& child : decomposition.getChildren()) {
out << "childNode(" << child->getNode().getGlobalId() << ")." << std::endl;
for(const auto& v : child->getNode().getBag()) {
out << "bag(" << child->getNode().getGlobalId() << ',' << v << "). ";
out << "-introduced(" << v << ")." << std::endl; // Redundant
}
}
}
if(decomposition.isRoot())
out << "final." << std::endl;
if(decomposition.isPostJoinNode())
out << "postJoin." << std::endl;
// Redundant predicates for convenience...
out << "introduced(X) :- current(X), not -introduced(X)." << std::endl;
out << "removed(X) :- childNode(N), bag(N,X), not current(X)." << std::endl;
}
