I am trying to use Objectify with a set of classes that inherit from an abstract base class:
class Container {
#Id Long id;
#Embedded Set<MyAbstract> children = new HashSet<MyAbstract>();
}
#Entity
abstract class MyAbstract {
#Id Long id;
}
#Subclass class Derived1 extends MyAbstract {}
#Subclass class Derived2 extends MyAbstract {}
Any idea how to code for this situation?
I get the following error:
java.lang.RuntimeException: java.lang.InstantiationException
at com.googlecode.objectify.impl.TypeUtils.newInstance(TypeUtils.java:321)
at com.googlecode.objectify.impl.load.EmbeddedMultivalueSetter.safeSet(EmbeddedMultivalueSetter.java:89)
at com.googlecode.objectify.impl.load.CollisionDetectingSetter.set(CollisionDetectingSetter.java:37)
at com.googlecode.objectify.impl.Transmog.load(Transmog.java:326)
at com.googlecode.objectify.impl.ConcreteEntityMetadata.toObject(ConcreteEntityMetadata.java:212)
at com.googlecode.objectify.impl.QueryImpl$ToObjectIterator.translate(QueryImpl.java:611)
at com.googlecode.objectify.impl.QueryImpl$ToObjectIterator.translate(QueryImpl.java:1)
at com.googlecode.objectify.util.TranslatingIterator.next(TranslatingIterator.java:35)
at com.googlecode.objectify.impl.QueryImpl.get(QueryImpl.java:368)
at com.foodblox.server.model.ObjectifyTest.creation(ObjectifyTest.java:49)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.lang.InstantiationException
at sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance(InstantiationExceptionConstructorAccessorImpl.java:30)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at com.googlecode.objectify.impl.TypeUtils.newInstance(TypeUtils.java:319)
... 33 more
[Edit: This answer is obsolete. Polymorphism works for embedded classes in Objectify v5+]
The polymorphism that Objectify offers (as of 3.0beta2) lets you create polymorphic entities in a manner that is similar (but not identical) to JPA. However, like JPA, this polymorphism does not extend to #Embedded classes.
It is not wholly unreasonable to request this behavior - file a feature request in the issue tracker.
Jeff just added polymorphism in to svn. It is going to be part of the 3.0 release of Ofy.
yours class, dont need a public constructor? Can you check that this is the case?
Related
I have a Spring 4.2 web-app with Hibernate 5 with Hibernate-Annotations. The entities seem fine, and now I have a whole bunch of DAO classes, and JUnit4 tests to test these DAO's.
With some of my classes, I have FK mappings to parent objects as follows:
public class MyDataEntity extends BaseEntity
{
#Id
#Column(name = "row_id")
private long rowId;
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name = "parent_id")
private ParentEntity parent;
}
We can presume, that there are other basic fields, and we have getters/setters for all of them, and a hashCode, equals, and toString methods as well.
In a test getting back MyDataEntity, I get an error message back like:
org.hibernate.HibernateException: HHH000142: Javassist Enhancement failed: com.tomholmes.server.model.common.ParentEntity
at org.hibernate.proxy.pojo.javassist.JavassistProxyFactory.getProxy(JavassistProxyFactory.java:130)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.createProxy(AbstractEntityTuplizer.java:666)
at org.hibernate.persister.entity.AbstractEntityPersister.createProxy(AbstractEntityPersister.java:4461)
at org.hibernate.event.internal.DefaultLoadEventListener.createProxyIfNecessary(DefaultLoadEventListener.java:336)
at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:257)
at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:137)
at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1129)
at org.hibernate.internal.SessionImpl.internalLoad(SessionImpl.java:1022)
at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:632)
at org.hibernate.type.EntityType.resolve(EntityType.java:424)
at org.hibernate.engine.internal.TwoPhaseLoad.doInitializeEntity(TwoPhaseLoad.java:154)
at org.hibernate.engine.internal.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:128)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:1132)
at org.hibernate.loader.Loader.processResultSet(Loader.java:992)
at org.hibernate.loader.Loader.doQuery(Loader.java:930)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:336)
at org.hibernate.loader.Loader.doList(Loader.java:2611)
at org.hibernate.loader.Loader.doList(Loader.java:2594)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2423)
at org.hibernate.loader.Loader.list(Loader.java:2418)
at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:109)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1774)
at org.hibernate.internal.CriteriaImpl.list(CriteriaImpl.java:363)
at com.tomholmes.server.dao.common.MyDataDaoImpl.getMyDataListBySubject(MyDataDaoImpl.java:105)
at com.tomholmes.server.dao.common.MyDataDaoTest.testListBySubject(MyDataDaoTest.java:308)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:254)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:193)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: java.lang.ClassCastException: com.agmednet.server.model.common.TrialEntity_$$_javassist_29 cannot be cast to javassist.util.proxy.Proxy
at org.hibernate.proxy.pojo.javassist.JavassistProxyFactory.getProxy(JavassistProxyFactory.java:123)
... 53 more
The simple fix to this would be to change the FetchType from LAZY to EAGER and the error message goes away.
I know I did some research on this before, but I don't rememeber what I found.
Generally, when I get an object from the database, I am taking that object, converting it to JSON and sending it to the front-end. I may not always need the ParentEntity record. If I am getting a record from "MyData" on the back-end, and I plan on getting the Parent at a later time, then I should be able to just lazy-load it.
My boss, would prefer I do lazy-loading, and I can understand not getting a large object when we don't need to, but I need to avoid getting this error, so maybe I just need to tweak my configuration to make lazy-loading work. Or, if I can't use lazy-loading, then I just need a reason I can explain.
Thanks for the help!
I am trying to fetch a Map< X, List> from a mapper function in mybatis using annotations something like :
#Select("SELECT * FROM relation WHERE id = #{id}")
Map<X, List<Y>> getXYRelations(int id );
Using this I am getting a TooManyResultException, something like this :
org.apache.ibatis.exceptions.TooManyResultsException: Expected one result (or null) to be returned by selectOne(), but found: 2
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:63)
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:95)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:40)
at sun.proxy.$Proxy51.getXYRelation(Unknown Source)
at com.project.service.XYServiceImpl.getXYRelation(XYServiceImpl.java:548)
at com.project.ee.test.JunitTest1.test(JunitTest1.java:127)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
So I added a mapkey something like this:
#Select("Select * FROM relation WHERE id = #{id}")
#MapKey("X")
Map<X, List<Y>> getXYRelations(int id);
but I am still getting failure with the following trace :
org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: java.lang.UnsupportedOperationException
### The error may involve com.project.data.mapper.XYMapper.getXYRelation-Inline
### The error occurred while setting parameters
### SQL: SELECT * FROM relation WHER id = ?
### Cause: java.lang.UnsupportedOperationException
at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:23)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:104)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectMap(DefaultSqlSession.java:78)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectMap(DefaultSqlSession.java:74)
at org.apache.ibatis.binding.MapperMethod.executeForMap(MapperMethod.java:158)
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:92)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:40)
at sun.proxy.$Proxy51.getAllUsersWithRoles(Unknown Source)
at com.project.ee.test.JunitTest1.test(JunitTest1.java:127)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.lang.UnsupportedOperationException
at org.apache.ibatis.reflection.wrapper.CollectionWrapper.findProperty(CollectionWrapper.java:42)
at org.apache.ibatis.reflection.MetaObject.findProperty(MetaObject.java:86)
at org.apache.ibatis.executor.resultset.FastResultSetHandler.applyAutomaticMappings(FastResultSetHandler.java:332)
at org.apache.ibatis.executor.resultset.FastResultSetHandler.getRowValue(FastResultSetHandler.java:261)
at org.apache.ibatis.executor.resultset.FastResultSetHandler.handleRowValues(FastResultSetHandler.java:214)
at org.apache.ibatis.executor.resultset.FastResultSetHandler.handleResultSet(FastResultSetHandler.java:186)
at org.apache.ibatis.executor.resultset.FastResultSetHandler.handleResultSets(FastResultSetHandler.java:152)
at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:57)
at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:70)
at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:57)
at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267)
at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:141)
at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:105)
at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:81)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:101)
... 33 more
I need List in the value somehow and I am not wanting to write a business logic for fetching a different list conveniently and converting it into the required as that will be of O(n) minimum. So can someone tell me something about this?
It should be
#Select("SELECT * FROM relation WHERE id = #{id}")
List<Map<String,Object>> getXYRelations(int id );
i am trying to gt a list of method on a particular java class object i have created and trying to unit test it.
It fails saying it cannot find the class with a "java.lang.ClassNotFoundException: class com.jr.freedom.user.User"
here is the testcode:
#Test
public void testRegisterNewUser() throws InvalidDataException {
userService = new UserService();
try {
Class classUser = Class.forName(User.class.toString());
Method m[] =classUser.getDeclaredMethods();
for(int i = 0; i < m.length; i++){
System.out.println(m[i].toString());
}
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
fail(e.getMessage());
}
assertNotNull(createTestUserJson());
}
My project package looks like this:
Inside the project folder:
src
test
the User class is inside src>com>jr?freedom>user (representing com.jr.freedom.user.User)
and the test class is in test>test>com>jr>freedom>user (representing test.com.jr.freedom.user.UserServiceTest)
at first the package name inside /test director was same as the package label in the /src directory for User object but that diddnt work as i thought that the java relfection was trying to retrieve the User object inside the /test folder so i renamed the package so that it is unique and it still did not work. any advice? thanks
Full error details:
java.lang.ClassNotFoundException: class com.jr.freedom.user.User
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at test.com.jr.freedom.user.UserServiceTest.testRegisterNewUser(UserServiceTest.java:49)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197
)
The result of User.class.toString() is:
class com.jr.freedom.user.User
See the class before the real classname starts? That makes the string an illegal class name.
You need to use getName().
The toString of the Class class returns: "class com.foo.NameOfClass" So it is trying to load: class com.jr.freedom.user.User (as your error messages states)
But more importantly, you already have the class: User.class, why try to load again? Just take that line out and have:
User.class.getDeclaredMethods...
I try to load the following yaml sequence :
- Person(paul):
firstName: Paul
lastName: Lumbergh
children :
- Person(bill)
- Person(jane)
which i tried to load in the following bean :
public class Person {
private long id;
private String firstName;
private String lastName;
private Person father;
private Set<Person> children;
}
I got this error which is due to the fact that snakeYaml load my sequence in a java.util.List instead of java.util.Set.
Is it a way to force snakeYAML to load a sequence in a java.util.Set ?
org.yaml.snakeyaml.error.YAMLException: org.yaml.snakeyaml.error.YAMLException: Cannot set property='children' with value='[Person [firstName=Bill, secondName=Lumbergh], Person [firstName=Jane, secondName=Lumbergh]]' (class java.util.ArrayList) in Person [firstName=Paul, secondName=Lumbergh]
at org.yaml.snakeyaml.extensions.compactnotation.CompactConstructor$ConstructCompactObject.construct(CompactConstructor.java:163)
at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:183)
at org.yaml.snakeyaml.constructor.BaseConstructor.constructSequenceStep2(BaseConstructor.java:277)
at org.yaml.snakeyaml.constructor.BaseConstructor.constructSequence(BaseConstructor.java:248)
at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlSeq.construct(SafeConstructor.java:440)
at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:183)
at org.yaml.snakeyaml.constructor.BaseConstructor.constructDocument(BaseConstructor.java:142)
at org.yaml.snakeyaml.constructor.BaseConstructor.getSingleData(BaseConstructor.java:128)
at org.yaml.snakeyaml.Yaml.loadFromReader(Yaml.java:480)
at org.yaml.snakeyaml.Yaml.load(Yaml.java:411)
at com.pearson.fixy.Fixy.loadEntities(Fixy.java:105)
at com.pearson.fixy.Fixy.load(Fixy.java:126)
at com.dvidea.TestFixy.test(TestFixy.java:24)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
According to the yaml specification the set syntax is the following one :
- Person(paul):
firstName: Paul
lastName: Lumbergh
children : !!set ? Person(bill) ? Person(jane) –
You force SnakeYAML to use List instead of Set. Sets have different representation in YAML: http://yaml.org/type/set.html
You can change the YAML document or instruct SnakeYAML to use sets instead of lists.
You may need to look in tests
Helo!
I'm trying to create a Web Service client using CXF. My application is in OSGi. And I use the Felix Framework.
But the following error occurs:
[main] ERROR org.apache.cxf.BusFactory - Failed to determine BusFactory implementation class name.
java.lang.ClassCastException: class org.apache.cxf.bus.spring.SpringBusFactory
at java.lang.Class.asSubclass(Unknown Source)
at org.apache.cxf.BusFactory.getBusFactoryClass(BusFactory.java:280)
at org.apache.cxf.BusFactory.newInstance(BusFactory.java:207)
at org.apache.cxf.BusFactory.newInstance(BusFactory.java:194)
at org.apache.cxf.BusFactory.getDefaultBus(BusFactory.java:90)
at org.apache.cxf.BusFactory.getThreadDefaultBus(BusFactory.java:137)
at org.apache.cxf.BusFactory.getThreadDefaultBus(BusFactory.java:122)
at org.apache.cxf.jaxws.spi.ProviderImpl.createServiceDelegate(ProviderImpl.java:89)
at javax.xml.ws.Service.<init>(Service.java:36)
at myorg.engine.test.mocks.soapservice.client.CHMService.<init>(CHMService.java:42)
at myorg.engine.service.OSGiServiceTest.testSoapServiceMock(OSGiServiceTest.java:133)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.ops4j.pax.exam.raw.extender.intern.ProbeInvokerImpl.injectContextAndInvoke(ProbeInvokerImpl.java:112)
at org.ops4j.pax.exam.raw.extender.intern.ProbeInvokerImpl.findAndInvoke(ProbeInvokerImpl.java:71)
at org.ops4j.pax.exam.raw.extender.intern.ProbeInvokerImpl.call(ProbeInvokerImpl.java:58)
at org.ops4j.pax.exam.nat.internal.NativeTestContainer.call(NativeTestContainer.java:83)
at org.ops4j.pax.exam.spi.reactors.EagerSingleStagedReactor.invoke(EagerSingleStagedReactor.java:85)
at org.ops4j.pax.exam.junit.JUnit4TestRunner$2.evaluate(JUnit4TestRunner.java:259)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.ops4j.pax.exam.junit.JUnit4TestRunner.run(JUnit4TestRunner.java:86)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
[main] ERROR org.apache.cxf.BusFactory - Failed to instantiate bus factory.
java.lang.ClassCastException: class org.apache.cxf.bus.spring.SpringBusFactory
at java.lang.Class.asSubclass(Unknown Source)
at org.apache.cxf.BusFactory.newInstance(BusFactory.java:218)
at org.apache.cxf.BusFactory.newInstance(BusFactory.java:194)
at org.apache.cxf.BusFactory.getDefaultBus(BusFactory.java:90)
at org.apache.cxf.BusFactory.getThreadDefaultBus(BusFactory.java:137)
at org.apache.cxf.BusFactory.getThreadDefaultBus(BusFactory.java:122)
at org.apache.cxf.jaxws.spi.ProviderImpl.createServiceDelegate(ProviderImpl.java:89)
at javax.xml.ws.Service.<init>(Service.java:36)
at myorg.engine.test.mocks.soapservice.client.CHMService.<init>(CHMService.java:42)
at myorg.engine.service.OSGiServiceTest.testSoapServiceMock(OSGiServiceTest.java:133)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.ops4j.pax.exam.raw.extender.intern.ProbeInvokerImpl.injectContextAndInvoke(ProbeInvokerImpl.java:112)
at org.ops4j.pax.exam.raw.extender.intern.ProbeInvokerImpl.findAndInvoke(ProbeInvokerImpl.java:71)
at org.ops4j.pax.exam.raw.extender.intern.ProbeInvokerImpl.call(ProbeInvokerImpl.java:58)
at org.ops4j.pax.exam.nat.internal.NativeTestContainer.call(NativeTestContainer.java:83)
at org.ops4j.pax.exam.spi.reactors.EagerSingleStagedReactor.invoke(EagerSingleStagedReactor.java:85)
at org.ops4j.pax.exam.junit.JUnit4TestRunner$2.evaluate(JUnit4TestRunner.java:259)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.ops4j.pax.exam.junit.JUnit4TestRunner.run(JUnit4TestRunner.java:86)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
[org.ops4j.pax.exam.junit.JUnit4TestRunner] : Exception
org.ops4j.pax.exam.TestContainerException: java.lang.reflect.InvocationTargetException
at org.ops4j.pax.exam.raw.extender.intern.ProbeInvokerImpl.injectContextAndInvoke(ProbeInvokerImpl.java:118)
at org.ops4j.pax.exam.raw.extender.intern.ProbeInvokerImpl.findAndInvoke(ProbeInvokerImpl.java:71)
at org.ops4j.pax.exam.raw.extender.intern.ProbeInvokerImpl.call(ProbeInvokerImpl.java:58)
at org.ops4j.pax.exam.nat.internal.NativeTestContainer.call(NativeTestContainer.java:83)
at org.ops4j.pax.exam.spi.reactors.EagerSingleStagedReactor.invoke(EagerSingleStagedReactor.java:85)
at org.ops4j.pax.exam.junit.JUnit4TestRunner$2.evaluate(JUnit4TestRunner.java:259)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.ops4j.pax.exam.junit.JUnit4TestRunner.run(JUnit4TestRunner.java:86)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.ops4j.pax.exam.raw.extender.intern.ProbeInvokerImpl.injectContextAndInvoke(ProbeInvokerImpl.java:112)
... 20 more
Caused by: java.lang.RuntimeException: java.lang.ClassCastException: class org.apache.cxf.bus.spring.SpringBusFactory
at org.apache.cxf.BusFactory.newInstance(BusFactory.java:224)
at org.apache.cxf.BusFactory.newInstance(BusFactory.java:194)
at org.apache.cxf.BusFactory.getDefaultBus(BusFactory.java:90)
at org.apache.cxf.BusFactory.getThreadDefaultBus(BusFactory.java:137)
at org.apache.cxf.BusFactory.getThreadDefaultBus(BusFactory.java:122)
at org.apache.cxf.jaxws.spi.ProviderImpl.createServiceDelegate(ProviderImpl.java:89)
at javax.xml.ws.Service.<init>(Service.java:36)
at myorg.engine.test.mocks.soapservice.client.CHMService.<init>(CHMService.java:42)
at myorg.engine.service.OSGiServiceTest.testSoapServiceMock(OSGiServiceTest.java:133)
... 25 more
Caused by: java.lang.ClassCastException: class org.apache.cxf.bus.spring.SpringBusFactory
at java.lang.Class.asSubclass(Unknown Source)
at org.apache.cxf.BusFactory.newInstance(BusFactory.java:218)
... 33 more
I said it could be because of different ClassLoader. Is it possible?
Any idea how to solve the problem?
Thanks!
Yes, it looks like you have two BusFactory class definitions. The SpringBusFactory implements one of them, and the asSubclass() call is made on the other. Since one BusFactory isn't the same class as the other, you'd get a CCE. Look for two different bundles containing the BusFactory class. One of them will be imported by the bundle that defines the SpringBusFactory.
I think the "two BusFactory class definitions" is a red herring.
Not sure what version of CXF you're using (guessing 2.4.2) but that code is trying to do ServiceLoader kind of stuff using the thread context classloader when looking for subclass implementations.
My best guess is there some Spring "magic" that CXF relies on and your missing the bundle that provides it. Looking at the CXF feature for Karaf it has loads of dependencies, check this and ensure you've got them all - at this point it may be easier to try this out using karaf with the CXF feature installed.
If you're using maven the features file can be accessed with this:
<dependency>
<groupId>org.apache.cxf.karaf</groupId>
<artifactId>apache-cxf</artifactId>
<version>2.4.2</version>
<type>xml</type>
<classifier>features</classifier>
</dependency>
Some documentation on bus configuration here
I've seen strange errors like that with pax-exam in the past. Does this run outside of pax-exam in a "normal" OSGi environment? Talend Service Factory ( http://talend.com/products/tsf ) has several examples (in the separate examples download package) of CXF clients and services running in OSGi and they all do work.