StringComparator.java |
1 /** 2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved. 3 * 4 * The contents of this file are subject to the terms of the Liferay Enterprise 5 * Subscription License ("License"). You may not use this file except in 6 * compliance with the License. You can obtain a copy of the License by 7 * contacting Liferay, Inc. See the License for the specific language governing 8 * permissions and limitations under the License, including but not limited to 9 * distribution rights of the Software. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 12 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 13 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 14 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 15 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 17 * SOFTWARE. 18 */ 19 20 package com.liferay.portal.kernel.util; 21 22 import java.io.Serializable; 23 24 import java.util.Comparator; 25 26 /** 27 * <a href="StringComparator.java.html"><b><i>View Source</i></b></a> 28 * 29 * @author Brian Wing Shun Chan 30 * 31 */ 32 public class StringComparator implements Comparator<String>, Serializable { 33 34 public StringComparator() { 35 this(true, false); 36 } 37 38 public StringComparator(boolean asc, boolean caseSensitive) { 39 _asc = asc; 40 _caseSensitive = caseSensitive; 41 } 42 43 public int compare(String s1, String s2) { 44 if (s1 == null) { 45 s1 = StringPool.BLANK; 46 } 47 48 if (s2 == null) { 49 s2 = StringPool.BLANK; 50 } 51 52 if (!_asc) { 53 String temp = s1; 54 55 s1 = s2; 56 s2 = temp; 57 } 58 59 if (_caseSensitive) { 60 return s1.compareTo(s2); 61 } 62 else { 63 return s1.compareToIgnoreCase(s2); 64 } 65 } 66 67 private boolean _asc; 68 private boolean _caseSensitive; 69 70 }