Using views in REST-API methods

olegmps2014 · July 27, 2020, 10:50am

I have the same problem described a this topic - How to GET Mapped ENUM Values in JSON using REST API - CUBA.Platform
but on use this advice i have a new problem:
I have two methods, which return “orders”(with full view) and orders(with id-view) and got the exception, which stack-trace you can see below:

java.lang.IllegalStateException: Cannot get unfetched attribute [type] from detached object ru.slepov0.testsale.entity.Order-c8528d66-d18b-4eac-5919-59d14027ee40 [detached].
	at org.eclipse.persistence.internal.queries.EntityFetchGroup.onUnfetchedAttribute(EntityFetchGroup.java:100) ~[org.eclipse.persistence.core-2.7.3-6-cuba.jar:na]
	at com.haulmont.cuba.core.sys.persistence.CubaEntityFetchGroup.onUnfetchedAttribute(CubaEntityFetchGroup.java:74) ~[cuba-global-7.1.0.jar:7.1.0]
	at org.eclipse.persistence.internal.jpa.EntityManagerImpl.processUnfetchedAttribute(EntityManagerImpl.java:2998) ~[org.eclipse.persistence.jpa-2.7.3-6-cuba.jar:na]
	at com.haulmont.chile.core.model.impl.AbstractInstance._persistence_checkFetched(AbstractInstance.java) ~[cuba-global-7.1.0.jar:7.1.0]
	at ru.slepov0.testsale.entity.Order._persistence_get_type(Order.java) ~[app-global-0.1-SNAPSHOT.jar:na]
	at ru.slepov0.testsale.entity.Order.getPlainTypeValue(Order.java:32) ~[app-global-0.1-SNAPSHOT.jar:na]
	at com.haulmont.chile.core.model.impl.AbstractInstance.getValue(AbstractInstance.java:99) ~[cuba-global-7.1.0.jar:7.1.0]
	at com.haulmont.cuba.core.entity.BaseGenericIdEntity.getValue(BaseGenericIdEntity.java:146) ~[cuba-global-7.1.0.jar:7.1.0]
	at com.haulmont.cuba.core.app.serialization.EntitySerialization$EntitySerializer.writeFields(EntitySerialization.java:303) ~[cuba-global-7.1.0.jar:7.1.0]
	at com.haulmont.cuba.core.app.serialization.EntitySerialization$EntitySerializer.serializeEntity(EntitySerialization.java:233) ~[cuba-global-7.1.0.jar:7.1.0]
	at com.haulmont.cuba.core.app.serialization.EntitySerialization$EntitySerializer.serialize(EntitySerialization.java:206) ~[cuba-global-7.1.0.jar:7.1.0]
	at com.haulmont.cuba.core.app.serialization.EntitySerialization$EntitySerializer.serialize(EntitySerialization.java:183) ~[cuba-global-7.1.0.jar:7.1.0]
	at com.google.gson.internal.bind.TreeTypeAdapter.write(TreeTypeAdapter.java:81) ~[gson-2.8.5.jar:na]
	at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:69) ~[gson-2.8.5.jar:na]
	at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.write(CollectionTypeAdapterFactory.java:97) ~[gson-2.8.5.jar:na]
	at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.write(CollectionTypeAdapterFactory.java:61) ~[gson-2.8.5.jar:na]
	at com.google.gson.Gson.toJson(Gson.java:704) ~[gson-2.8.5.jar:na]
	at com.google.gson.Gson.toJson(Gson.java:683) ~[gson-2.8.5.jar:na]
	at com.google.gson.Gson.toJson(Gson.java:638) ~[gson-2.8.5.jar:na]
	at com.google.gson.Gson.toJson(Gson.java:618) ~[gson-2.8.5.jar:na]
	at com.haulmont.cuba.core.app.serialization.EntitySerialization.toJson(EntitySerialization.java:109) ~[cuba-global-7.1.0.jar:7.1.0]
	at com.haulmont.addon.restapi.api.service.ServicesControllerManager._invokeServiceMethod(ServicesControllerManager.java:164) ~[restapi-rest-api-7.1.0.jar:na]
	at com.haulmont.addon.restapi.api.service.ServicesControllerManager.invokeServiceMethodGet(ServicesControllerManager.java:78) ~[restapi-rest-api-7.1.0.jar:na]
	at com.haulmont.addon.restapi.api.controllers.ServicesController.invokeServiceMethodGet(ServicesController.java:62) ~[restapi-rest-api-7.1.0.jar:na]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_211]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_211]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_211]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_211]
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189) ~[spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:892) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) [spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:897) [spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) [servlet-api.jar:na]
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882) [spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) [servlet-api.jar:na]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) [catalina.jar:9.0.19]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.19]
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at com.haulmont.addon.restapi.api.auth.CubaRestLastSecurityFilter.doFilter(CubaRestLastSecurityFilter.java:90) [restapi-rest-api-7.1.0.jar:na]
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:119) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at com.haulmont.addon.restapi.api.auth.CubaAnonymousAuthenticationFilter.doFilter(CubaAnonymousAuthenticationFilter.java:116) [restapi-rest-api-7.1.0.jar:na]
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.security.oauth2.provider.authentication.OAuth2AuthenticationProcessingFilter.doFilter(OAuth2AuthenticationProcessingFilter.java:176) [spring-security-oauth2-2.3.4.RELEASE.jar:na]
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:96) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:74) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:107) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:112) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at com.haulmont.addon.restapi.api.sys.RestExceptionLoggingFilter.doFilter(RestExceptionLoggingFilter.java:42) [restapi-rest-api-7.1.0.jar:na]
	at org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:112) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.web.filter.CompositeFilter.doFilter(CompositeFilter.java:73) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) [spring-security-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:357) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:270) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:9.0.19]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.19]
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) [tomcat-websocket.jar:9.0.19]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:9.0.19]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.19]
	at org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:107) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.web.filter.CompositeFilter.doFilter(CompositeFilter.java:73) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at com.haulmont.cuba.web.sys.CubaHttpFilter.doFilter(CubaHttpFilter.java:93) [cuba-web-7.1.0.jar:7.1.0]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:9.0.19]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.19]
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200) [catalina.jar:9.0.19]
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [catalina.jar:9.0.19]
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490) [catalina.jar:9.0.19]
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [catalina.jar:9.0.19]
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [catalina.jar:9.0.19]
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678) [catalina.jar:9.0.19]
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [catalina.jar:9.0.19]
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [catalina.jar:9.0.19]
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-coyote.jar:9.0.19]
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-coyote.jar:9.0.19]
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:836) [tomcat-coyote.jar:9.0.19]
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1747) [tomcat-coyote.jar:9.0.19]
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-coyote.jar:9.0.19]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_211]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_211]
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-util.jar:9.0.19]
	at java.lang.Thread.run(Thread.java:748) [na:1.8.0_211]

Well I will be very grateful to know how to make this getter do not any harm on work of my app
here the sample project

testSale.zip (150.0 KB) (I’m use custom repos and gradle wrapper, you should change them on basic ones)

belyaev · July 27, 2020, 4:01pm

According to the stack trace, you’re trying to serialize an unfetched field.

The first option - you can try EntitySerializationAPI as discussed here.

Another option - you may try to exclude some fields, there were some approaches described in this article.

Please let us know if you have any problems with that.

olegmps2014 · July 29, 2020, 9:13am

Hello, @belyaev ! Thank for your answer !

I tried to use your advice to use EntitySerializationAPI but I found some problems:
How can I add the View I needed?
because null view gives such result:

String result = entitySerializationAPI.toJson(unitList,null, EntitySerializationOption.SERIALIZE_INSTANCE_NAME);
        return ImmutableMap.of("total Count",unitList.size(),"list",result);

{
    "error": "Error on service method invocation",
    "details": "Cannot get unfetched attribute [typeOnMap] from detached object ru.spacecorp.cmec.entity.Unit-c9b4c6f8-9c28-8c89-1f66-a9941f6758bb [detached]."
}

belyaev · July 29, 2020, 9:43am

    @Inject
    protected Metadata metadata;

//or

    @Inject
    protected ViewRepository viewRepository;

...
metadata.getViewRepository().getView(entity.getClass(), viewName)

//or

viewRepository.getView(entity.getClass(), viewName)
...

belyaev · September 23, 2020, 1:32pm

Please find the example attached testSale.zip (84.7 KB)