Method getOrAdd

ZezeJava/ZezeJava/src/main/java/Zeze/Raft/RocksRaft/Table.java:127–151

(K key)

	}

	@SuppressWarnings("unchecked")
	public V getOrAdd(K key) {
		Transaction currentT = Transaction.getCurrent();
		TableKey tkey = new TableKey(name, key);

		var cr = currentT.getRecordAccessed(tkey);
		if (cr != null) {
			V crv = (V)cr.newestValue();
			if (crv != null)
				return crv;
			// add
		} else {
			Record<K> r = getOrLoad(key);
			cr = new Transaction.RecordAccessed(r);
			currentT.addRecordAccessed(r.createRootInfoIfNeed(tkey), cr);
			if (r.getValue() != null)
				return (V)r.getValue();
			// add
		}

		V add = newValue();
		add.initRootInfo(cr.getOrigin().createRootInfoIfNeed(tkey), null);
		cr.put(currentT, add);
		return add;
	}

	private Record<K> getOrLoad(K key) {
		return getOrLoad(key, null);