/**
* 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 2000-2002 (C) Intalio, Inc. All Rights Reserved.
*
* $Id$
*/
package org.exolab.castor.util;
import org.apache.oro.text.regex.*;
/**
* An implementation of the RegExpEvaluator that uses the
* Jakarta ORO Regular Expression library. For more information
* about the Jakarta ORO library please visit:
* <a href="http://jakarta.apache.org/oro/">
* http://jakarta.apache.org/oro/</a>
*
* @author <a href="mailto:glenn@voyager.apg.more.net">Glenn Nielsen</a>
* @author <a href="mailto:kvisco@intalio.com">Keith Visco</a>
* @version $Revision$ $Date: 2003-03-03 00:05:44 -0700 (Mon, 03 Mar 2003) $
**/
public class JakartaOroEvaluator
implements RegExpEvaluator
{
private static final String BOL = "^";
private static final String EOL = "$";
/**
* The Regular expression
**/
private Perl5Pattern _regexp = null;
/**
* Sets the regular expression to match against during
* a call to #matches
*
* @param rexpr the regular expression
**/
public void setExpression(String rexpr) {
if (rexpr != null) {
try {
//-- patch and compile expression
Perl5Compiler compiler = new Perl5Compiler();
_regexp = (Perl5Pattern) compiler.compile(BOL + rexpr + EOL,
Perl5Compiler.SINGLELINE_MASK);
}
catch(MalformedPatternException ex) {
String err = "RegExp Syntax error: ";
err += ex.getMessage();
err += " ; error occured with the following "+
"regular expression: " + rexpr;
throw new IllegalArgumentException(err);
}
}
else
_regexp = null;
} //-- setExpression
/**
* Returns true if the given String is matched by the
* regular expression of this RegExpEvaluator
*
* @param value the String to check the production of
* @return true if the given string matches the regular
* expression of this RegExpEvaluator
* @see #setExpression
**/
public boolean matches(String value)
{
// object to match compiled regular expressions
Perl5Matcher matcher = new Perl5Matcher();
// class for accessing results of pattern match
return matcher.contains(value,_regexp);
} //-- matches
} //-- JakartaOroEvaluator