| /* |
| * 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.ignite.internal.metastorage.client; |
| |
| import org.apache.ignite.internal.metastorage.common.OperationType; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * Defines operation for meta storage conditional update (invoke). |
| */ |
| public final class Operation { |
| /** Actual operation implementation. */ |
| private final InnerOp upd; |
| |
| /** |
| * Constructs an operation which wraps the actual operation implementation. |
| * |
| * @param upd The actual operation implementation. |
| */ |
| Operation(InnerOp upd) { |
| this.upd = upd; |
| } |
| |
| /** */ |
| public InnerOp inner() { |
| return upd; |
| } |
| |
| /** |
| * Returns operation type. |
| * |
| * @return Operation type. |
| */ |
| public OperationType type() { |
| return upd.type(); |
| } |
| |
| /** |
| * Represents operation of type <i>remove</i>. |
| */ |
| public static final class RemoveOp extends AbstractOp { |
| /** |
| * Default no-op constructor. |
| * |
| * @param key Identifies an entry which operation will be applied to. |
| */ |
| RemoveOp(byte[] key) { |
| super(key, OperationType.REMOVE); |
| } |
| } |
| |
| /** |
| * Represents operation of type <i>put</i>. |
| */ |
| public static final class PutOp extends AbstractOp { |
| /** Value. */ |
| private final byte[] val; |
| |
| /** |
| * Constructs operation of type <i>put</i>. |
| * |
| * @param key Identifies an entry which operation will be applied to. |
| * @param val The value to which the entry should be updated. |
| */ |
| PutOp(byte[] key, byte[] val) { |
| super(key, OperationType.PUT); |
| |
| this.val = val; |
| } |
| |
| /** |
| * Returns value. |
| * |
| * @return Value. |
| */ |
| public byte[] value() { |
| return val; |
| } |
| } |
| |
| /** |
| * Represents operation of type <i>no-op</i>. |
| */ |
| public static final class NoOp extends AbstractOp { |
| /** |
| * Default no-op constructor. |
| */ |
| NoOp() { |
| super(null, OperationType.NO_OP); |
| } |
| } |
| |
| /** |
| * Defines operation interface. |
| */ |
| private interface InnerOp { |
| /** |
| * Returns key. |
| * |
| * @return Key. |
| */ |
| @Nullable byte[] key(); |
| |
| /** |
| * Returns operation type. |
| * |
| * @return Operation type. |
| */ |
| @NotNull OperationType type(); |
| } |
| |
| /** */ |
| private static class AbstractOp implements InnerOp { |
| /** Key. */ |
| @Nullable private final byte[] key; |
| |
| /** Operation type. */ |
| @NotNull private final OperationType type; |
| |
| /** |
| * Ctor. |
| * @param key Key. |
| * @param type Operation type. |
| */ |
| private AbstractOp(@Nullable byte[] key, OperationType type) { |
| this.key = key; |
| this.type = type; |
| } |
| |
| /** |
| * Returns key. |
| * |
| * @return Key. |
| */ |
| @Nullable |
| @Override public byte[] key() { |
| return key; |
| } |
| |
| /** |
| * Returns operation type. |
| * |
| * @return Operation type. |
| */ |
| @NotNull |
| @Override public OperationType type() { |
| return type; |
| } |
| } |
| } |