/**
* @param cacheCtx Cache context.
* @param cand Cache lock candidate to add.
* @return {@code True} if added as a result of this operation, {@code false} if was previously
* added.
*/
public boolean addNext(GridCacheContext cacheCtx, GridCacheMvccCandidate cand) {
assert cand != null;
assert !cand.reentry() : "Lock reentries should not be linked: " + cand;
// Don't order near candidates by thread as they will be ordered on
// DHT node. Also, if candidate is implicit, no point to order him.
if (cacheCtx.isNear() || cand.singleImplicit()) return true;
LinkedList<GridCacheMvccCandidate> queue = pending.get();
GridCacheMvccCandidate prev = null;
if (!queue.isEmpty()) prev = queue.getLast();
queue.add(cand);
if (prev != null) {
prev.next(cand);
cand.previous(prev);
}
if (log.isDebugEnabled()) log.debug("Linked new candidate: " + cand);
return true;
}