void expandNode(Node node) {
// System.out.println(node.toString(target));
QuerySequenceElement el = sequence.get(node.sequenceElNum);
if (el.center == null) // This node describers a bond that closes a ring
{
// Checking whether this bond is present in the target
IAtom tAt0 = node.atoms[query.getAtomNumber(el.atoms[0])];
IAtom tAt1 = node.atoms[query.getAtomNumber(el.atoms[1])];
IBond tBo = target.getBond(tAt0, tAt1);
if (tBo != null)
if (el.bonds[0].matches(tBo)) {
node.sequenceElNum++;
// stack.push(node);
if (node.sequenceElNum == sequence.size()) {
// The node is not added in the stack if the end of the sequence is reached
isomorphismFound = true;
if (FlagStoreIsomorphismNode) isomorphismNodes.add(node);
} else stack.push(node);
}
} else {
targetAt.clear();
IAtom tAt = node.atoms[el.centerNum];
List<IAtom> conAt = target.getConnectedAtomsList(tAt);
for (int i = 0; i < conAt.size(); i++) {
if (!containsAtom(node.atoms, conAt.get(i))) targetAt.add(conAt.get(i));
}
if (el.atoms.length <= targetAt.size()) generateNodes(node);
}
}
