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	git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@18931 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
		
			
				
	
	
		
			96 lines
		
	
	
		
			3.2 KiB
		
	
	
	
		
			Java
		
	
	
	
	
	
			
		
		
	
	
			96 lines
		
	
	
		
			3.2 KiB
		
	
	
	
		
			Java
		
	
	
	
	
	
| /*
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|  * Copyright (C) 2005-2010 Alfresco Software Limited.
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|  *
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|  * This file is part of Alfresco
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|  *
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|  * Alfresco is free software: you can redistribute it and/or modify
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|  * it under the terms of the GNU Lesser General Public License as published by
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|  * the Free Software Foundation, either version 3 of the License, or
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|  * (at your option) any later version.
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|  *
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|  * Alfresco is distributed in the hope that it will be useful,
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|  * but WITHOUT ANY WARRANTY; without even the implied warranty of
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|  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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|  * GNU Lesser General Public License for more details.
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|  *
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|  * You should have received a copy of the GNU Lesser General Public License
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|  * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
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|  */
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| package org.alfresco.jcr.item;
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| 
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| import java.util.ArrayList;
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| import java.util.List;
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| import java.util.StringTokenizer;
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| 
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| import org.alfresco.service.namespace.NamespacePrefixResolver;
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| import org.alfresco.service.namespace.QName;
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| import org.alfresco.service.namespace.QNamePattern;
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| 
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| /**
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|  * Checks if the QName matches the passed JCR pattern.
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|  * 
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|  * The pattern may be a full name or a partial name with one or more wildcard
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|  * characters ("*"), or a disjunction (using the "|" character to represent 
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|  * logical OR) of these. For example,
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|  *
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|  * isMatch("jcr:* | myapp:report | my doc")
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|  *
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|  * Note that leading and trailing whitespace around a disjunct is ignored, 
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|  * but whitespace within a disjunct forms part of the pattern to be matched.
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|  *
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|  * The EBNF for namePattern is:
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|  *
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|  * namePattern ::= disjunct {'|' disjunct}
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|  * disjunct ::= name [':' name]
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|  * name ::= '*' | ['*'] fragment {'*' fragment} ['*']
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|  * fragment ::= char {char}
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|  * char ::= nonspace | ' '
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|  * nonspace ::= (* Any Unicode character except: '/', ':', '[', ']', '*', ''', '"', '|' or any whitespace character *) 
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|  */
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| public class JCRPatternMatch implements QNamePattern
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| {
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|     private List<String> searches = new ArrayList<String>();
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|     private NamespacePrefixResolver resolver;
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|     
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|     
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|     /**
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|      * Construct 
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|      * @param pattern  JCR Pattern
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|      * @param resolver  Namespace Prefix Resolver
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|      */
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|     public JCRPatternMatch(String pattern, NamespacePrefixResolver resolver)
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|     {
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|         // TODO: Check for valid pattern
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|         
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|         // Convert to regular expression
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|         String regexPattern = pattern.replaceAll("\\*", ".*");
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| 
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|         // Split into independent search strings
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|         StringTokenizer tokenizer = new StringTokenizer(regexPattern, "|", false);
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|         while (tokenizer.hasMoreTokens())
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|         {
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|             String disjunct = tokenizer.nextToken().trim();
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|             this.searches.add(disjunct);
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|         }
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|         
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|         this.resolver = resolver;
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|     }
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|     
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|     /* (non-Javadoc)
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|      * @see org.alfresco.service.namespace.QNamePattern#isMatch(org.alfresco.service.namespace.QName)
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|      */
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|     public boolean isMatch(QName qname)
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|     {
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|         String prefixedName = qname.toPrefixString(resolver);
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|         for (String search : searches)
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|         {
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|             if (prefixedName.matches(search))
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|             {
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|                 return true;
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|             }
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|         }
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|         return false;
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|     }
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| 
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| }
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