Security Filter and Tomcat 7

I am trying to get our webapp working with Tomcat 7 and am finding that Security Filter is failing because it is compiled against an older servlet spec.  Has Security Filter been obsoleted by Tomcat's <security-constraint> support? 
  Thanks,
   -M@

Sep 01 15:58:25 INFO thr:14 u:- c:org.apache.jsp.e_jsp m:_jspService --- IN E.JSP --- java.lang.NoSuchMethodError: org.apache.catalina.Realm.hasRole(Ljava/security/Principal;Ljava/lang/String;)Z
	at org.securityfilter.realm.catalina.CatalinaRealmAdapter.isUserInRole(CatalinaRealmAdapter.java:108)
	at org.securityfilter.filter.SecurityFilter.doFilter(SecurityFilter.java:214)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:279)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:300)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:680)
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