| /* |
| * Copyright 2014 Fluo authors (see AUTHORS) |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except |
| * in compliance with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software distributed under the License |
| * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
| * or implied. See the License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| |
| package io.fluo.api.observer; |
| |
| import io.fluo.api.client.TransactionBase; |
| |
| /** |
| * Implemented by users to a watch a {@link Column} and be notified of changes to the Column via the |
| * {@link #process(TransactionBase, Bytes, Column)} method. AbstractObserver extends |
| * {@link Observer} but provides a default implementation for the {@link #init(Context)} and |
| * {@link #close()} method so that they can be optionally implemented by user. |
| */ |
| public abstract class AbstractObserver implements Observer { |
| |
| @Override |
| public void init(Context context) throws Exception {} |
| |
| @Override |
| public void close() {} |
| } |