| /* |
| * 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.tephra; |
| |
| import java.util.Arrays; |
| |
| /** |
| * Represents a row key from a data set changed as part of a transaction. |
| */ |
| public final class ChangeId { |
| private final byte[] key; |
| private final int hash; |
| |
| public ChangeId(byte[] bytes) { |
| key = bytes; |
| hash = Arrays.hashCode(bytes); |
| } |
| |
| public byte[] getKey() { |
| return key; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (o == this) { |
| return true; |
| } |
| if (o == null || o.getClass() != ChangeId.class) { |
| return false; |
| } |
| ChangeId other = (ChangeId) o; |
| return hash == other.hash && Arrays.equals(key, other.key); |
| } |
| |
| @Override |
| public int hashCode() { |
| return hash; |
| } |
| |
| @Override |
| public String toString() { |
| return toStringBinary(key, 0, key.length); |
| } |
| |
| // Copy from Bytes.toStringBinary so that we don't need direct dependencies on Bytes. |
| private String toStringBinary(byte [] b, int off, int len) { |
| StringBuilder result = new StringBuilder(); |
| for (int i = off; i < off + len; ++i) { |
| int ch = b[i] & 0xFF; |
| if ((ch >= '0' && ch <= '9') |
| || (ch >= 'A' && ch <= 'Z') |
| || (ch >= 'a' && ch <= 'z') |
| || " `~!@#$%^&*()-_=+[]{}|;:'\",.<>/?".indexOf(ch) >= 0) { |
| result.append((char) ch); |
| } else { |
| result.append(String.format("\\x%02X", ch)); |
| } |
| } |
| return result.toString(); |
| } |
| } |