1 /**
2 * Copyright 2010 The Apache Software Foundation
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 */
20 package org.apache.hadoop.hbase.util;
21
22 /**
23 * Utility for Strings.
24 */
25 public class Strings {
26 public final static String DEFAULT_SEPARATOR = "=";
27 public final static String DEFAULT_KEYVALUE_SEPARATOR = ", ";
28
29 /**
30 * Append to a StringBuilder a key/value.
31 * Uses default separators.
32 * @param sb StringBuilder to use
33 * @param key Key to append.
34 * @param value Value to append.
35 * @return Passed <code>sb</code> populated with key/value.
36 */
37 public static StringBuilder appendKeyValue(final StringBuilder sb,
38 final String key, final Object value) {
39 return appendKeyValue(sb, key, value, DEFAULT_SEPARATOR,
40 DEFAULT_KEYVALUE_SEPARATOR);
41 }
42
43 /**
44 * Append to a StringBuilder a key/value.
45 * Uses default separators.
46 * @param sb StringBuilder to use
47 * @param key Key to append.
48 * @param value Value to append.
49 * @param separator Value to use between key and value.
50 * @param keyValueSeparator Value to use between key/value sets.
51 * @return Passed <code>sb</code> populated with key/value.
52 */
53 public static StringBuilder appendKeyValue(final StringBuilder sb,
54 final String key, final Object value, final String separator,
55 final String keyValueSeparator) {
56 if (sb.length() > 0) {
57 sb.append(keyValueSeparator);
58 }
59 return sb.append(key).append(separator).append(value);
60 }
61 }