Coverage Report - net.sf.jmatchparser.util.PatternCache
 
Classes in this File Line Coverage Branch Coverage Complexity
PatternCache
80%
4/5
100%
2/2
2
 
 1  
 /*
 2  
  * Copyright (c) 2006 - 2011 Michael Schierl
 3  
  * 
 4  
  * All rights reserved.
 5  
  * 
 6  
  * Redistribution and use in source and binary forms, with or without
 7  
  * modification, are permitted provided that the following conditions
 8  
  * are met:
 9  
  * 
 10  
  * - Redistributions of source code must retain the above copyright notice,
 11  
  *   this list of conditions and the following disclaimer.
 12  
  *   
 13  
  * - Redistributions in binary form must reproduce the above copyright
 14  
  *   notice, this list of conditions and the following disclaimer in the
 15  
  *   documentation and/or other materials provided with the distribution.
 16  
  *   
 17  
  * - Neither name of the copyright holders nor the names of its
 18  
  *   contributors may be used to endorse or promote products derived from
 19  
  *   this software without specific prior written permission.
 20  
  *   
 21  
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND THE CONTRIBUTORS
 22  
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 23  
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 24  
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 25  
  * HOLDERS OR THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 26  
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 27  
  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 28  
  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 29  
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 30  
  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 31  
  * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 32  
  */
 33  
 package net.sf.jmatchparser.util;
 34  
 
 35  
 import java.util.HashMap;
 36  
 import java.util.Map;
 37  
 import java.util.regex.Pattern;
 38  
 
 39  
 /**
 40  
  * A static cache for compiled regexp {@link Pattern}s.
 41  
  */
 42  0
 public class PatternCache {
 43  1
         private static final Map<String, Pattern> patternMap = new HashMap<String, Pattern>();
 44  
 
 45  
         /**
 46  
          * Lookup a regex in the cache, and compile it if it is not cached yet.
 47  
          * 
 48  
          * @param regex
 49  
          *            The regular expression to compile / look up
 50  
          * @return The compiled regular expression
 51  
          */
 52  
         public static Pattern compile(String regex) {
 53  1460
                 if (!patternMap.containsKey(regex)) {
 54  184
                         patternMap.put(regex, Pattern.compile(regex));
 55  
                 }
 56  1460
                 return patternMap.get(regex);
 57  
         }
 58  
 }