Hi, I have sent the following email to uima-dev, but who knows, maybe someone in uima-user might have an idea as well.
Best, Stergos D. Afantenos ---------- Forwarded message ---------- From: Stergos D. Afantenos <[email protected]> Date: Wed, Jul 15, 2009 at 15:41 Subject: Passing parameters to an analysis engine from SimpleRestServer To: [email protected] Dear all, I am currently developing an application for which I had to change the parameters that the Simple Rest Server takes by default. Everything works quite smoothly at the moment, with the exception that when I am trying to pass the value of a specific REST parameters as a value to a parameter of an Analysis Engine (extracted from the corresponding pear) I get a nasty exception: org.apache.uima.UIMA_IllegalStateException org.apache.uima.resource.impl.ConfigurationManagerImplBase.setSessionParam(ConfigurationManagerImplBase.java:713) org.apache.uima.resource.impl.ConfigurationManagerImplBase.setConfigParameterValue(ConfigurationManagerImplBase.java:203) org.apache.uima.resource.ConfigurableResource_ImplBase.setConfigParameterValue(ConfigurableResource_ImplBase.java:53) org.apache.uima.simpleserver.Service.process(Service.java:299) org.apache.uima.simpleserver.servlet.SimpleServerServlet.analyze(SimpleServerServlet.java:253) org.apache.uima.simpleserver.servlet.SimpleServerServlet.doGet(SimpleServerServlet.java:181) javax.servlet.http.HttpServlet.service(HttpServlet.java:689) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) Browsing a while at the code of uima-core.jar I have found the following. The function setConfigParameterValue(String aQualifiedParamName, Object aValue) in the ConfigurationManagerImplBase essentially calls the function setSessionParam(String aCompleteName, Object aValue) The first thing that this function checks is whether the field private Session mSession is null, in which case it throws a UIMA_IllegalStateException(), exactly as shown above. The javadoc for the interface ConfigurationManager (which apparently handles the parameters) mentions the following: "Note that the ConfigurationManager needs to make use of the Session object in order to store configuration settings that are specific to a particular client session." My question is the following: Has anyone tried to pass a value to an AE parameter in the context of the Simple Rest Server? Moreover, does anyone know how to handle sessions in UIMA? Is there a relevant documentation? Thanking you in advance, Stergos D. Afantenos
