What I'm doing wrong: java.lang.IllegalStateException: Unregistered type

[Pavel Bernshtam]

Hi!

I'm trying to start working with twig in Gaelyk application.

I'm using twig 2.0:

        <dependency>

            <groupId>com.google.code.twig</groupId>

            <artifactId>twig-persist</artifactId>

            <version>2.0-rc</version>

        </dependency>

But even for the simplest class

class SimpleClass {

    int i=5

}

in a test

 void testStore() {

        ObjectDatastore datastoring = new AnnotationObjectDatastore();

        SimpleClass s = new SimpleClass()

        datastoring.store(s)

    }

I receive

java.lang.IllegalStateException: Unregistered type class SimpleClass

at com.google.code.twig.configuration.DefaultConfiguration.typeToName(DefaultConfiguration.java:129)

at com.google.code.twig.configuration.DefaultConfiguration.typeToKind(DefaultConfiguration.java:104)

at com.google.code.twig.standard.StandardCommonStoreCommand.instanceToEntity(StandardCommonStoreCommand.java:321)

at com.google.code.twig.standard.StandardCommonStoreCommand.instanceToKey(StandardCommonStoreCommand.java:243)

at com.google.code.twig.standard.StandardSingleStoreCommand.now(StandardSingleStoreCommand.java:43)

at com.google.code.twig.standard.TranslatorObjectDatastore.store(TranslatorObjectDatastore.java:188)

at com.google.code.twig.ObjectDatastore$store.call(Unknown Source)

at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:42)

at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)

at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)

at TestTwig.testStore(TestTwig.groovy:16)

[John Patterson]

The RC requires all classes to be registered before use with this static method:

ObjectDatastoreFactory.register(MyClass.class);

this change is to avoid full package names being used in the "kind".  It would be nice to have some automated way to add many classes, such as a package scan.  There have been performance problems with this on GAE but I believe that placing all your classes in a jar fixes it.

[Pavel Bernshtam]

Thank you, but after registration I receive

java.lang.NullPointerException: No API environment is registered for this thread.

at com.google.appengine.api.datastore.DatastoreApiHelper.getCurrentAppId(DatastoreApiHelper.java:86)

at com.google.appengine.api.datastore.DatastoreApiHelper.getCurrentAppIdNamespace(DatastoreApiHelper.java:96)

at com.google.appengine.api.datastore.Key.<init>(Key.java:106)

at com.google.appengine.api.datastore.Key.<init>(Key.java:90)

at com.google.appengine.api.datastore.Key.<init>(Key.java:86)

at com.google.appengine.api.datastore.Entity.<init>(Entity.java:125)

at com.google.appengine.api.datastore.Entity.<init>(Entity.java:106)

at com.google.code.twig.util.Entities.createEntity(Entities.java:45)

at com.google.code.twig.standard.StandardEncodeCommand.createEntity(StandardEncodeCommand.java:31)

at com.google.code.twig.standard.StandardCommonStoreCommand.instanceToEntity(StandardCommonStoreCommand.java:391)

at com.google.code.twig.standard.StandardCommonStoreCommand.instanceToKey(StandardCommonStoreCommand.java:243)

at com.google.code.twig.standard.StandardSingleStoreCommand.now(StandardSingleStoreCommand.java:43)

at com.google.code.twig.standard.TranslatorObjectDatastore.store(TranslatorObjectDatastore.java:188)

at com.google.code.twig.ObjectDatastore$store.call(Unknown Source)

at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:42)

at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)

at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)

at TestTwig.testStore(TestTwig.groovy:19)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)

at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)

at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)

at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)

at org.junit.runners.ParentRunner.run(ParentRunner.java:300)

at org.junit.runner.JUnitCore.run(JUnitCore.java:157)

at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:76)

at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:195)

at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:63)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)

[John Patterson]

This is an exception thrown from the GAE dev environment saying it has not been set up correctly.

I am guessing that your test case does not set up the test environment correctly.  You can extend LocalDatastoreTest to get started quickly.