JdkRegexpMatcher.java

/*
 * Copyright 2002-2006 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.nfwork.dbfound.json;

import java.util.regex.Matcher;
import java.util.regex.Pattern;


/**
 * @author Andres Almiray
 * @version 1
 */
public class JdkRegexpMatcher implements RegexpMatcher
{
   private Pattern pattern;

   public JdkRegexpMatcher( String pattern )
   {
      this.pattern = Pattern.compile( pattern );
   }

   public String getGroupIfMatches( String str, int group )
   {
      Matcher matcher = pattern.matcher( str );
      if( matcher.matches() ){
         return matcher.group( group );
      }
      return "";
   }

   public boolean matches( String str )
   {
      return pattern.matcher( str )
            .matches();
   }
}