/**
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided
* that the following conditions are met:
*
* 1. Redistributions of source code must retain copyright
* statements and notices. Redistributions must also contain a
* copy of this document.
*
* 2. Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* 3. The name "Exolab" must not be used to endorse or promote
* products derived from this Software without prior written
* permission of Intalio, Inc. For written permission,
* please contact info@exolab.org.
*
* 4. Products derived from this Software may not be called "Exolab"
* nor may "Exolab" appear in their names without prior written
* permission of Intalio, Inc. Exolab is a registered
* trademark of Intalio, Inc.
*
* 5. Due credit should be given to the Exolab Project
* (http://www.exolab.org/).
*
* THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* INTALIO, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Copyright 2000 (C) Intalio, Inc. All Rights Reserved.
*
* $Id$
*/
package org.exolab.castor.util;
import org.apache.regexp.*;
import org.castor.core.util.Messages;
/**
* An implementation of {@link RegExpEvaluator} that uses the Jakarta Regular
* Expression library. For more information about the Jakarta RE library please
* visit: <a href="http://jakarta.apache.org/regexp/">
* http://jakarta.apache.org/regexp/</a>
*
* @author <a href="mailto:kvisco@intalio.com">Keith Visco</a>
* @version $Revision$ $Date: 2004-02-14 02:16:35 -0700 (Sat, 14 Feb
* 2004) $
*/
public class JakartaRegExpEvaluator implements RegExpEvaluator {
/**
* Reguar expression denoting a beginning of line.
*/
private static final String BOL = "^(";
/**
* Regular expression denoting end of line.
*/
private static final String EOL = ")$";
/**
* The Regular expression
*/
private RE _regexp;
/**
* {@inheritDoc}
*
* @see org.exolab.castor.util.RegExpEvaluator#setExpression(java.lang.String)
*/
public void setExpression(final String rexpr) {
if (rexpr != null) {
try {
// -- patch and compile expression
_regexp = new RE(BOL + rexpr + EOL);
} catch (RESyntaxException ex) {
String message = Messages.format("regexp.eval.error", rexpr);
IllegalArgumentException iae = new IllegalArgumentException(
message);
iae.initCause(ex);
throw iae;
}
} else {
_regexp = null;
}
}
/**
* {@inheritDoc}
*
* @see org.exolab.castor.util.RegExpEvaluator#matches(java.lang.String)
*/
public boolean matches(final String value) {
if (_regexp != null) {
return _regexp.match(value);
}
return true;
}
}