| /* |
| */ |
| package org.taverna.server.master.identity; |
| |
| import static java.util.regex.Pattern.compile; |
| |
| import java.security.Principal; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| import java.util.regex.PatternSyntaxException; |
| |
| import org.taverna.server.master.interfaces.LocalIdentityMapper; |
| import org.taverna.server.master.utils.UsernamePrincipal; |
| |
| /** |
| * A trivial identity mapper that just uses the name out of the |
| * {@link Principal}, or uses a regular expression to extract it from the string |
| * representation of the principal. |
| * |
| * @author Donal Fellows |
| */ |
| public class NameIDMapper implements LocalIdentityMapper { |
| private Pattern pat; |
| |
| /** |
| * @param regexp |
| * The regular expression to use. The first capturing group |
| * within the RE will be the result of the extraction. |
| * @throws PatternSyntaxException |
| * If the pattern is invalid. |
| */ |
| public void setRegexp(String regexp) throws PatternSyntaxException { |
| pat = compile(regexp); |
| } |
| |
| @Override |
| public String getUsernameForPrincipal(UsernamePrincipal user) { |
| if (pat != null) { |
| Matcher m = pat.matcher(user.toString()); |
| if (m.find() && m.groupCount() > 0) { |
| return m.group(1); |
| } |
| return null; |
| } |
| return user.getName(); |
| } |
| } |