The field resource represents a field in a dataset. The resource is identified by {fieldName} in the URI. Note that the modification, creation, and deletion of fields can only be perfoRmed on empty datasets.
Field information:
FreeMarker template error (DEBUG mode; use RETHROW in production!):
The following has evaluated to null or missing:
==> resource.content.fieldInfo [in template "field.ftl" at line 20, column 54]
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Tip: It's the step after the last dot that caused this error, not those before it.
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Tip: If the failing expression is known to legally refer to something that's sometimes null or missing, either specify a default value like myOptionalVar!myDefault, or use <#if myOptionalVar??>when-present<#else>when-missing. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)??
----
----
FTL stack trace ("~" means nesting-related):
- Failed at: #if resource.content.fieldInfo.name?? [in template "field.ftl" at line 20, column 49]
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Java stack trace (for programmers):
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freemarker.core.InvalidReferenceException: [... Exception message was already printed; see it above ...]
at freemarker.core.InvalidReferenceException.getInstance(InvalidReferenceException.java:134)
at freemarker.core.UnexpectedTypeException.newDescriptionBuilder(UnexpectedTypeException.java:85)
at freemarker.core.UnexpectedTypeException.(UnexpectedTypeException.java:48)
at freemarker.core.NonHashException.(NonHashException.java:49)
at freemarker.core.Dot._eval(Dot.java:48)
at freemarker.core.Expression.eval(Expression.java:101)
at freemarker.core.ExistsExpression._eval(ExistsExpression.java:49)
at freemarker.core.Expression.eval(Expression.java:101)
at freemarker.core.Expression.evalToBoolean(Expression.java:177)
at freemarker.core.Expression.evalToBoolean(Expression.java:163)
at freemarker.core.ConditionalBlock.accept(ConditionalBlock.java:48)
at freemarker.core.Environment.visit(Environment.java:347)
at freemarker.core.Environment.visit(Environment.java:353)
at freemarker.core.Environment.visit(Environment.java:353)
at freemarker.core.Environment.process(Environment.java:326)
at freemarker.template.Template.process(Template.java:383)
at org.restlet.ext.freemarker.TemplateRepresentation.write(TemplateRepresentation.java:315)
at org.restlet.representation.CharacterRepresentation.write(CharacterRepresentation.java:67)
at org.restlet.engine.adapter.ServerCall.writeResponseBody(ServerCall.java:509)
at org.restlet.engine.adapter.ServerCall.sendResponse(ServerCall.java:453)
at org.restlet.ext.servlet.internal.ServletCall.sendResponse(ServletCall.java:421)
at org.restlet.engine.adapter.ServerAdapter.commit(ServerAdapter.java:191)
at org.restlet.ext.servlet.ServletAdapter.service(ServletAdapter.java:196)
at com.supermap.services.rest.RestServlet$AdapterProxy.service(SourceFile:283)
at com.supermap.services.rest.RestServlet.service(SourceFile:86)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:623)
at com.supermap.server.impl.DefaultServiceInstance.service(SourceFile:254)
at com.supermap.server.api.ServiceInstance.service(SourceFile:89)
at com.supermap.server.host.webapp.handlers.WebAppRequestDispatcher.forward(SourceFile:81)
at com.supermap.server.host.webapp.handlers.HandleRequestAndSaveToCacheTask.call(SourceFile:66)
at com.supermap.server.host.webapp.handlers.HandleRequestAndSaveToCacheTask.call(SourceFile:27)
at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
at com.supermap.server.host.webapp.handlers.ServiceDispatcherHandler.handleRequestByCacheResponse(SourceFile:568)
at com.supermap.server.host.webapp.handlers.ServiceDispatcherHandler.handle(SourceFile:423)
at com.supermap.server.host.webapp.handlers.AbstractHandler.process(SourceFile:207)
at com.supermap.server.host.webapp.handlers.AbstractHandler.a(SourceFile:239)
at com.supermap.server.host.webapp.handlers.AbstractHandler.invokeLowerPriorityHandlers(SourceFile:224)
at com.supermap.server.host.webapp.handlers.AbstractHandler.process(SourceFile:209)
at com.supermap.server.host.webapp.handlers.BasicHandler.process(SourceFile:308)
at com.supermap.server.host.webapp.ApplicationFilter.doFilter(SourceFile:258)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:168)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:144)
at com.supermap.services.filter.TunnelFilter.doFilter(SourceFile:42)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:168)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:144)
at org.apache.catalina.filters.CorsFilter.handleNonCORS(CorsFilter.java:331)
at org.apache.catalina.filters.CorsFilter.doFilter(CorsFilter.java:158)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:168)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:144)
at org.apache.catalina.filters.HttpHeaderSecurityFilter.doFilter(HttpHeaderSecurityFilter.java:129)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:168)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:144)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:168)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:130)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:346)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:383)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:936)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1190)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63)
at java.base/java.lang.Thread.run(Unknown Source)
SuperMap iServer REST API
