Hi James, I logged this issue in the tracker https://fedora-commons.org/jira/browse/FCREPO-390 and checked in a fix. It turns out that the code was dereferencing the mediaType (mimeType) even if it hadn't been supplied, resulting in the NullPointerException you were seeing. I've updated the trunk to include the updated REST API jar (0.5.3), so feel free to grab it and see if this fixes your problem.
Thanks for reporting this. It's always good to get things like this fixed. Bill On Thu, Dec 18, 2008 at 5:44 PM, Bill Branan <[email protected]>wrote: > Hi James, > Your url looks correct except that there is not a controlGroup parameter on > modifyDatastream, that's only available on addDatastream, but including it > should not have made any difference, and you mentioned testing without it > anyway. I'm not sure off-hand why you would be getting the > NullPointerException. I'll add a test to the REST API test suite and see if > I have the same problem. > > In the meantime, the code for DatastreamResource can be found here: > http://fedora-commons.svn.sourceforge.net/viewvc/fedora-commons/fedora-rest/trunk/src/java/fedora/server/rest/DatastreamResource.java?revision=7386&view=markup&sortby=date.<http://fedora-commons.svn.sourceforge.net/viewvc/fedora-commons/fedora-rest/trunk/src/java/fedora/server/rest/DatastreamResource.java?revision=7386&view=markup&sortby=date> > > Bill > > > On Tue, Dec 16, 2008 at 1:57 PM, James Chartrand <[email protected]>wrote: > >> I have successfully used the REST api to modify an xml datastream, i.e., >> with control type X. >> >> I am unsuccessfully, however, trying to use the REST api to modify a >> datastream with control type E. So, calling the rest service with a url >> like: >> >> http://localhost:8080/fedora/objects/inu:inu-mntb-0000123456-pg-6ae567b8-9cef-4668-96bd-d43cb64c3491/datastreams/OCR_XML?dsLocation=http://someserver.edu/archive/mntb/kfiles/2008/0000123456/0000123456-00000162-001/xml/1593221_0030.xml&controlGroup=E&logMessage=Update&dsLabel=OCR%20XML%20File >> >> I tried to follow the documentation as described here: >> http://fedora-commons.org/confluence/display/FCR30/Fedora+REST+API#FedoraRESTAPI-modifyDatastreamto >> construct the url. >> >> The status I get back from the server for that call is 500 (internal >> error). I've also tried urls without the dsLabel, logMessage, and >> controlGroup, but same error. >> >> the error that shows up in fedora/tomcat/logs/catalina.out is: >> javax.ws.rs.WebApplicationException: java.lang.NullPointerException >> at >> fedora.server.rest.BaseRestResource.handleException(BaseRestResource.java:98) >> at >> fedora.server.rest.DatastreamResource.addOrUpdateDatastream(DatastreamResource.java:417) >> at >> fedora.server.rest.DatastreamResource.modifyDatastream(DatastreamResource.java:268) >> at sun.reflect.GeneratedMethodAccessor185.invoke(Unknown Source) >> at >> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) >> at java.lang.reflect.Method.invoke(Method.java:585) >> at >> com.sun.ws.rest.impl.model.method.dispatch.EntityParamDispatchProvider$ResponseOutInvoker._dispatch(EntityParamDispatchProvider.java:128) >> at >> com.sun.ws.rest.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:65) >> at >> com.sun.ws.rest.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:118) >> at >> com.sun.ws.rest.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:96) >> at >> com.sun.ws.rest.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:56) >> at >> com.sun.ws.rest.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:96) >> at >> com.sun.ws.rest.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:49) >> at >> com.sun.ws.rest.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:416) >> at >> com.sun.ws.rest.spi.container.servlet.ServletContainer.service(ServletContainer.java:151) >> at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) >> at >> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269) >> at >> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) >> at >> fedora.server.security.servletfilters.FilterSetup.doFilter(FilterSetup.java:235) >> at >> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215) >> at >> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) >> at >> fedora.server.security.servletfilters.FilterSetup.doFilter(FilterSetup.java:235) >> at >> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215) >> at >> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) >> at >> fedora.server.security.servletfilters.FilterSetup.doFilter(FilterSetup.java:235) >> at >> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215) >> at >> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) >> at >> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) >> at >> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174) >> at >> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525) >> at >> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) >> at >> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) >> at >> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108) >> at >> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174) >> at >> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874) >> at >> org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665) >> at >> org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528) >> at >> org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81) >> at >> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689) >> at java.lang.Thread.run(Thread.java:595) >> Caused by: java.lang.NullPointerException >> at >> fedora.server.rest.DatastreamResource.addOrUpdateDatastream(DatastreamResource.java:399) >> ... 38 more >> >> And in the fedora.log I see what I think is an associated error: >> >> ERROR 2008-12-16 12:27:19.728 [http-8080-Processor25] (DatastreamResource) >> java.lang.NullPointerException >> >> but just that single line. >> >> I thought I'd start by looking at line 417 >> of fedora.server.rest.DatastreamResource.addOrUpdateDatastream, but I can't >> find the source code for the REST api on sourceforge, although I'm probably >> looking in the wrong place: >> >> >> http://fedora-commons.svn.sourceforge.net/viewvc/fedora-commons/fedora/tags/release-3.1/src/java/fedora/server/ >> >> I also notice that in the test class, there doesn't seem to be a test for >> this specific call, i.e., in: >> >> >> http://fedora-commons.svn.sourceforge.net/viewvc/fedora-commons/fedora/tags/release-3.1/src/test/junit/fedora/test/api/TestRESTAPI.java >> >> If someone could suggest what I might be doing wrong with the REST call, >> or could point to where I could find the source code for the REST api, it >> would be much appreciated. >> >> thanks, >> >> james >> >> >> >> >> >> ------------------------------------------------------------------------------ >> SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, >> Nevada. >> The future of the web can't happen without you. 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