| /* |
| * 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 java.util.Arrays; |
| import org.apache.ignite.lang.ByteArray; |
| import org.apache.ignite.metastorage.client.Entry; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * Meta storage entry. |
| */ |
| public final class EntryImpl implements Entry { |
| /** Key. */ |
| @NotNull |
| private final ByteArray key; |
| |
| /** Value. */ |
| @Nullable |
| private final byte[] val; |
| |
| /** Revision. */ |
| private final long rev; |
| |
| /** Update counter. */ |
| private final long updCntr; |
| |
| /** |
| * Construct entry with given paramteters. |
| * |
| * @param key Key. |
| * @param val Value. |
| * @param rev Revision. |
| * @param updCntr Update counter. |
| */ |
| EntryImpl(@NotNull ByteArray key, @Nullable byte[] val, long rev, long updCntr) { |
| this.key = key; |
| this.val = val; |
| this.rev = rev; |
| this.updCntr = updCntr; |
| } |
| |
| /** {@inheritDoc} */ @NotNull |
| @Override public ByteArray key() { |
| return key; |
| } |
| |
| /** {@inheritDoc} */ |
| @Nullable |
| @Override public byte[] value() { |
| return val; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public long revision() { |
| return rev; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public long updateCounter() { |
| return updCntr; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean tombstone() { |
| return val == null && rev > 0 && updCntr > 0; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean empty() { |
| return val == null && rev == 0 && updCntr == 0; |
| } |
| |
| |
| /** {@inheritDoc} */ |
| @Override public boolean equals(Object o) { |
| if (this == o) |
| return true; |
| |
| if (o == null || getClass() != o.getClass()) |
| return false; |
| |
| EntryImpl entry = (EntryImpl)o; |
| |
| if (rev != entry.rev) |
| return false; |
| |
| if (updCntr != entry.updCntr) |
| return false; |
| |
| if (!key.equals(entry.key)) |
| return false; |
| |
| return Arrays.equals(val, entry.val); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public int hashCode() { |
| int res = key.hashCode(); |
| |
| res = 31 * res + Arrays.hashCode(val); |
| |
| res = 31 * res + (int)(rev ^ (rev >>> 32)); |
| |
| res = 31 * res + (int)(updCntr ^ (updCntr >>> 32)); |
| |
| return res; |
| } |
| } |