| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.falcon.entity.store; |
| |
| import org.apache.falcon.util.FalconRadixUtils; |
| |
| import javax.annotation.Nonnull; |
| import javax.annotation.Nullable; |
| import java.util.Collection; |
| |
| /** |
| * A <Key, Value> Store to store values against Feed Locations. |
| * |
| * @param <T> |
| */ |
| public interface FeedPathStore<T> { |
| |
| void insert(@Nullable String key, @Nonnull T value); |
| |
| int getSize(); |
| |
| @Nullable |
| Collection<T> find(@Nonnull String key, @Nonnull FalconRadixUtils.INodeAlgorithm algorithm); |
| |
| @Nullable |
| Collection<T> find(@Nonnull String key); |
| |
| boolean delete(@Nonnull String key, @Nonnull T value); |
| |
| } |