public static void dpUpdatesExistentialReorderLeftMemory(
BetaMemory bm, LeftTupleSets srcLeftTuples) {
LeftTupleMemory ltm = bm.getLeftTupleMemory();
// sides must first be re-ordered, to ensure iteration integrity
for (LeftTuple leftTuple = srcLeftTuples.getUpdateFirst(); leftTuple != null; ) {
LeftTuple next = leftTuple.getStagedNext();
if (leftTuple.getMemory() != null) {
ltm.remove(leftTuple);
}
leftTuple = next;
}
for (LeftTuple leftTuple = srcLeftTuples.getUpdateFirst(); leftTuple != null; ) {
LeftTuple next = leftTuple.getStagedNext();
if (leftTuple.getBlocker() == null) {
ltm.add(leftTuple);
for (LeftTuple childLeftTuple = leftTuple.getFirstChild(); childLeftTuple != null; ) {
LeftTuple childNext = childLeftTuple.getLeftParentNext();
childLeftTuple.reAddRight();
childLeftTuple = childNext;
}
}
leftTuple = next;
}
}
public static LeftTuple deleteLeftChild(
LeftTuple childLeftTuple, LeftTupleSets trgLeftTuples, LeftTupleSets stagedLeftTuples) {
switch (childLeftTuple.getStagedType()) {
// handle clash with already staged entries
case LeftTuple.INSERT:
stagedLeftTuples.removeInsert(childLeftTuple);
break;
case LeftTuple.UPDATE:
stagedLeftTuples.removeUpdate(childLeftTuple);
break;
}
LeftTuple next = childLeftTuple.getLeftParentNext();
trgLeftTuples.addDelete(childLeftTuple);
childLeftTuple.unlinkFromRightParent();
childLeftTuple.unlinkFromLeftParent();
return next;
}