Paul Holmes-Higgin 31c250682b Changed licence headers
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@5081 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
2007-02-08 18:59:58 +00:00

95 lines
3.2 KiB
Java

/*
* Copyright (C) 2005 Alfresco, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.alfresco.jcr.item;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
import org.alfresco.service.namespace.NamespacePrefixResolver;
import org.alfresco.service.namespace.QName;
import org.alfresco.service.namespace.QNamePattern;
/**
* Checks if the QName matches the passed JCR pattern.
*
* The pattern may be a full name or a partial name with one or more wildcard
* characters ("*"), or a disjunction (using the "|" character to represent
* logical OR) of these. For example,
*
* isMatch("jcr:* | myapp:report | my doc")
*
* Note that leading and trailing whitespace around a disjunct is ignored,
* but whitespace within a disjunct forms part of the pattern to be matched.
*
* The EBNF for namePattern is:
*
* namePattern ::= disjunct {'|' disjunct}
* disjunct ::= name [':' name]
* name ::= '*' | ['*'] fragment {'*' fragment} ['*']
* fragment ::= char {char}
* char ::= nonspace | ' '
* nonspace ::= (* Any Unicode character except: '/', ':', '[', ']', '*', ''', '"', '|' or any whitespace character *)
*/
public class JCRPatternMatch implements QNamePattern
{
private List<String> searches = new ArrayList<String>();
private NamespacePrefixResolver resolver;
/**
* Construct
* @param pattern JCR Pattern
* @param resolver Namespace Prefix Resolver
*/
public JCRPatternMatch(String pattern, NamespacePrefixResolver resolver)
{
// TODO: Check for valid pattern
// Convert to regular expression
String regexPattern = pattern.replaceAll("\\*", ".*");
// Split into independent search strings
StringTokenizer tokenizer = new StringTokenizer(regexPattern, "|", false);
while (tokenizer.hasMoreTokens())
{
String disjunct = tokenizer.nextToken().trim();
this.searches.add(disjunct);
}
this.resolver = resolver;
}
/* (non-Javadoc)
* @see org.alfresco.service.namespace.QNamePattern#isMatch(org.alfresco.service.namespace.QName)
*/
public boolean isMatch(QName qname)
{
String prefixedName = qname.toPrefixString(resolver);
for (String search : searches)
{
if (prefixedName.matches(search))
{
return true;
}
}
return false;
}
}