%perm:allow annotation - BaseX-Talk - mailman.uni-konstanz.de

30 Jan 2019


      Hi again,
I've another question about the %perm:allow annotation. Is it possible 
to use multiple instances of this annotation?
My expectation would be that any of the listed roles is allowed to call 
the function. For example:
declare %rest:GET
%rest:path("/multi")
%perm:allow("role1")
%perm:allow("role2")
function test:multi()as item()*
{
    <response>multi</response>
}; declare %rest:GET
%rest:path("/single")
%perm:allow("role1")
function test:single()as item()*
{
    <response>single</response>
};
declare %perm:check('/admin','{$perm}')function test:check($perm)
{
    ()
};
When I call /multi the first time I get a response. But all further 
calls to /multi will result in a NullPointerException.
Calls to /single do not have this problem.
My error stacktrace is:
java.lang.NullPointerException
at org.basex.util.list.ObjectList.finish(ObjectList.java:235)
at org.basex.query.value.seq.StrSeq.get(StrSeq.java:64)
at org.basex.http.restxq.RestXqPerm.map(RestXqPerm.java:43)
at org.basex.http.restxq.RestXqFunction.bind(RestXqFunction.java:263)
at org.basex.http.restxq.RestXqResponse.bind(RestXqResponse.java:61)
at org.basex.http.web.WebResponse.create(WebResponse.java:53)
at org.basex.http.restxq.RestXqServlet.run(RestXqServlet.java:50)
at org.basex.http.BaseXServlet.service(BaseXServlet.java:59)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
I think the error is at the location where he parses the perm:allow 
annotations.
Best regards
Johannes