1 /** 2 * Redistribution and use of this software and associated documentation ("Software"), with or 3 * without modification, are permitted provided that the following conditions are met: 4 * 5 * 1. Redistributions of source code must retain copyright statements and notices. Redistributions 6 * must also contain a copy of this document. 7 * 8 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of 9 * conditions and the following disclaimer in the documentation and/or other materials provided with 10 * the distribution. 11 * 12 * 3. The name "Exolab" must not be used to endorse or promote products derived from this Software 13 * without prior written permission of Intalio, Inc. For written permission, please contact 14 * info@exolab.org. 15 * 16 * 4. Products derived from this Software may not be called "Exolab" nor may "Exolab" appear in 17 * their names without prior written permission of Intalio, Inc. Exolab is a registered trademark of 18 * Intalio, Inc. 19 * 20 * 5. Due credit should be given to the Exolab Project (http://www.exolab.org/). 21 * 22 * THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESSED OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 24 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTALIO, INC. OR ITS 25 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 28 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY 29 * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 * Copyright 2000 (C) Intalio, Inc. All Rights Reserved. 32 * 33 * $Id$ 34 */ 35 36 package org.exolab.castor.util; 37 38 import org.apache.regexp.*; 39 import org.castor.core.util.Messages; 40 41 /** 42 * An implementation of {@link RegExpEvaluator} that uses the Jakarta Regular Expression library. 43 * For more information about the Jakarta RE library please visit: 44 * <a href="http://jakarta.apache.org/regexp/"> http://jakarta.apache.org/regexp/</a> 45 * 46 * @author <a href="mailto:kvisco@intalio.com">Keith Visco</a> 47 * @version $Revision$ $Date: 2004-02-14 02:16:35 -0700 (Sat, 14 Feb 2004) $ 48 */ 49 public class JakartaRegExpEvaluator implements RegExpEvaluator { 50 51 /** 52 * Reguar expression denoting a beginning of line. 53 */ 54 private static final String BOL = "^("; 55 56 /** 57 * Regular expression denoting end of line. 58 */ 59 private static final String EOL = ")$"; 60 61 /** 62 * The Regular expression 63 */ 64 private RE _regexp; 65 66 /** 67 * {@inheritDoc} 68 * 69 * @see org.exolab.castor.util.RegExpEvaluator#setExpression(java.lang.String) 70 */ 71 public void setExpression(final String rexpr) { 72 73 if (rexpr != null) { 74 try { 75 // -- patch and compile expression 76 _regexp = new RE(BOL + rexpr + EOL); 77 } catch (RESyntaxException ex) { 78 String message = Messages.format("regexp.eval.error", rexpr); 79 throw new IllegalArgumentException(message, ex); 80 } 81 } else { 82 _regexp = null; 83 } 84 } 85 86 /** 87 * {@inheritDoc} 88 * 89 * @see org.exolab.castor.util.RegExpEvaluator#matches(java.lang.String) 90 */ 91 public boolean matches(final String value) { 92 if (_regexp != null) { 93 return _regexp.match(value); 94 } 95 return true; 96 } 97 98 }