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!
Related
In my application I have an instance of A, when I update Ai, I want to create a copy of Ai with all previous values and insert that.
To do this work, I made a PreUpdateEventListener and in the onPreUpdate method, I want to create that clone, and then save it as a new instance, so assign Id:0 and then treat it as a new insertion.
To do that, I've:
from the SessionFactory, I opened a new Session
from that new session, using the Ai identifier, I've loaded the instance with previous state
I closed the newly created session
then I created a new instance, the clone, and then I copied into all the values treating associations so they could be treated as new ones
then I saved the new instance, the clone, in the current session
Everything seems to work, but when my code calls the flush (the caller code) I get a fantastic:
org.hibernate.AssertionFailure: collection [null] was not processed by flush()
at org.hibernate.engine.spi.CollectionEntry.postFlush(CollectionEntry.java:214)
at org.hibernate.event.internal.AbstractFlushingEventListener.postFlush(AbstractFlushingEventListener.java:369)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:40)
at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1295)
at it.xyxyx.test.DaoBaseTest.FlushUnitOfWork(DaoBaseTest.java:28)
at it.xyxyx.service.dao.PlanDaoTest.testCan_query_for_plan_audit_with_plan_group_id(PlanDaoTest.java:344)
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:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
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:325)
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:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
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:363)
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)
Any help is apprechiated!
Thanks in advance
I would like to add caching to my Spring Boot 4 application. As a key I would like to use id (type Long) of my entity, value is my entity.
My repository extends CrudRepository.
I cache data for findOne method:
public interface SampleEntityService extends CrudRepository<SampleEntity, Long> {
#Cacheable(key = "#a0", value = "findOne")
SampleEntity findOne(Long id);
So I would like to invalidate caches for method save iterable of entities (to be consistent):
#CacheEvict(value = FIND_ONE, key = "#entities.id")
<S extends SampleEntity> Iterable<S> save(Iterable<S> entities);
but when I call this method:
sampleEntityService.save(ImmutableList.of(entity1));
I got an exception:
org.springframework.expression.spel.SpelEvaluationException: EL1008E:(pos 10): Property or field 'id' cannot be found on object of type 'com.google.common.collect.SingletonImmutableList' - maybe not public?
at org.springframework.expression.spel.ast.PropertyOrFieldReference.readProperty(PropertyOrFieldReference.java:224)
at org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:94)
at org.springframework.expression.spel.ast.PropertyOrFieldReference.access$000(PropertyOrFieldReference.java:46)
at org.springframework.expression.spel.ast.PropertyOrFieldReference$AccessorLValue.getValue(PropertyOrFieldReference.java:375)
at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:88)
at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:120)
at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:242)
at org.springframework.cache.interceptor.ExpressionEvaluator.key(ExpressionEvaluator.java:115)
at org.springframework.cache.interceptor.CacheAspectSupport$CacheOperationContext.generateKey(CacheAspectSupport.java:621)
at org.springframework.cache.interceptor.CacheAspectSupport.performCacheEvict(CacheAspectSupport.java:406)
at org.springframework.cache.interceptor.CacheAspectSupport.processCacheEvicts(CacheAspectSupport.java:392)
at org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:362)
at org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:299)
at org.springframework.cache.interceptor.CacheInterceptor.invoke(CacheInterceptor.java:61)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
at com.sun.proxy.$Proxy75.save(Unknown Source)
at my.springboot.dao.sampleentity.SampleEntityCacheTest.testSampleEntityCaching_saveMany(SampleEntityCacheTest.java:119)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:73)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:82)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:73)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:224)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:83)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:68)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:163)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)
-How can I fix this EL expression to invalidate all items in the cache which id is in the collection ?
-If this is not possible, how to make this method not supported (without writing specific implementation - I like interface magic) ?
You cannot use #CacheEvict the way you mentioned (with Iterable).
When using "key" attribute of #CacheEvict, the SpEL should point to a single id of the entity that is to be removed from specified cache(s).
It is not directly mentioned in the docs though (http://docs.spring.io/spring/docs/current/spring-framework-reference/html/cache.html#cache-annotations-evict)
I am using the SWTBot recorder to test a very simple feature. I just want to create a Dynamic Web Project and then delete it. But it won't even create the project. Why is it blowing up here?
Here is the code that the recorder generated:
#RunWith(SWTBotJunit4ClassRunner.class)
public class TestSwtBot {
private static SWTWorkbenchBot bot = new SWTWorkbenchBot();
#Test
public void test() {
bot.menu("File").menu("New").menu("Other...").click();
bot.tree().getTreeItem("Web").getNode("Dynamic Web Project").select();
bot.textWithLabel("Project na&me:").setText("TestDynamicProject");
bot.button("Next >").click();
bot.button("Next >").click();
bot.checkBox("Generate web.xml deployment descriptor").click();
bot.button("Finish").click();
bot.button("No").click();
bot.checkBox("Delete project contents on disk (cannot be undone)").click();
bot.button("OK").click();
}
So it is blowing up on this line:
bot.tree().getTreeItem("Web").getNode("Dynamic Web Project").select();
And here is the stacktrace:
org.eclipse.swtbot.swt.finder.exceptions.WidgetNotFoundException: Could not find node with text: Dynamic Web Project
at org.eclipse.swtbot.swt.finder.widgets.SWTBotTreeItem.getNodes(SWTBotTreeItem.java:338)
at org.eclipse.swtbot.swt.finder.widgets.SWTBotTreeItem.getNode(SWTBotTreeItem.java:312)
at org.eclipse.swtbot.swt.finder.widgets.SWTBotTreeItem.getNode(SWTBotTreeItem.java:350)
at com.homedepot.is.dt.eclipse.swtbot.TestSwtBot.test(TestSwtBot.java:26)
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.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
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.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.swtbot.swt.finder.junit.SWTBotJunit4ClassRunner.run(SWTBotJunit4ClassRunner.java:54)
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: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.swtbot.eclipse.core.RemotePluginTestRunner.main(RemotePluginTestRunner.java:64)
at org.eclipse.swtbot.eclipse.core.UITestApplication.runTests(UITestApplication.java:117)
at org.eclipse.e4.ui.internal.workbench.swt.E4Testable$1.run(E4Testable.java:73)
at java.lang.Thread.run(Thread.java:745)
You need to expand the "Web" tree item first.
bot.tree().getTreeItem("Web").expand();
bot.tree().getTreeItem("Web").getNode("Dynamic Web Project").select();
did you use Eclipse Spy to see if your calling the correct tree?, I mean, in this part of your code: bot.tree() you can call differents trees by their index, for example bot.tree(0) or bot.tree(1) maybe is looking for your node in another tree.
For more information about Eclipse spy, please see here: https://wiki.eclipse.org/SWTBot/FAQ#Can_I_get_more_details_on_a_particular_widget.3F
I'm encrypting data using Kaffe JVM (equivalent to java 1.1) and trying decrypting data with JDK7.
In my algorithm I use BigInteger (RSA encription). When I tested the application in JDK, all its OK, but when I trying to deserialize with JDK7 from a generated BigIntegers in Kaffe JVM I get this Exception listed below.
I was thinking in many causes of problem:
Different JVMs: http://www-01.ibm.com/support/docview.wss?uid=swg1IV13214
Problem with Big Endians and little endians
problem with processor type (16-bits, 32 -bits 64-bits).
Any ideas how to fix or detect the cause of the problem?
Thanks in advance.
java.io.StreamCorruptedException: BigInteger: signum-magnitude mismatch
at java.math.BigInteger.readObject(BigInteger.java:3113)
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:601)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1004)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1866)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1685)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1341)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1964)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1888)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
at commons.persistence.PersisterDataBigIntegerBuffer.fileToObjects(PersisterDataBigIntegerBuffer.java:87)
at commons.persistence.CryptoRSAFileManager.getDataFromFile(CryptoRSAFileManager.java:44)
at test.commons.csv.ParserTester.test(ParserTester.java:41)
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:601)
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.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
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.junit.runners.ParentRunner.run(ParentRunner.java:309)
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)
It looks like a difference in serialization formats.
To solve this problem you are probably going to have to subclass BigInteger and override the readObject method once you figure out the storage format from the source JDK. To give you a hint on what you're in for, here is the relavant part of BigInteger's readObject from OpenJDK:
// Read the alternate persistent fields that we care about
int sign = fields.get("signum", -2);
byte[] magnitude = (byte[])fields.get("magnitude", null);
// Validate signum
if (sign < -1 || sign > 1) {
String message = "BigInteger: Invalid signum value";
if (fields.defaulted("signum"))
message = "BigInteger: Signum not present in stream";
throw new java.io.StreamCorruptedException(message);
}
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?