1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * ident        "%Z%%M% %I%     %E% SMI"
  24  *
  25  * Copyright 2002 Sun Microsystems, Inc.  All rights reserved.
  26  * Use is subject to license terms.
  27  */
  28 
  29 package com.sun.dhcpmgr.data.qualifier;
  30 
  31 import java.util.regex.*;
  32 
  33 /**
  34  * An implementation of the qualifier type that provides a string type
  35  * where values must be a valid fully qualified domain name.
  36  */
  37 public class QualifierFQDN extends QualifierString {
  38 
  39     private static final String fqdnRegex = "([a-zA-Z][a-zA-Z0-9-]*[.]?)+";
  40 
  41     public Object parseValue(String value) {
  42         if (value == null) {
  43             return null;
  44         }
  45 
  46         value = value.trim();
  47 
  48         Pattern pattern = Pattern.compile(fqdnRegex);
  49         Matcher matcher = pattern.matcher(value);
  50 
  51         if (matcher.matches()) {
  52             return value;
  53         } else {
  54             return null;
  55         }
  56     }
  57 
  58 }