/** {@inheritDoc} */
@Override
protected SoftLock lock(Object key) throws CacheException {
try {
TxContext ctx = txCtx.get();
if (ctx == null) txCtx.set(ctx = new TxContext());
lockKey(key);
ctx.locked(key);
return null;
} catch (GridException e) {
rollbackCurrentTx();
throw new CacheException(e);
}
}
