[OPENJPA-2144] Using recursive relationships along with Identity Class leads to NullPointerException

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.2.2, 2.0.0, 2.0.1, 2.1.0, 2.1.1, 2.2.0
• Component/s: jdbc
• Patch Info: Patch Available
• Assignee: Unassigned
• Reporter: Dmitry Pavlov
• Created: 27/Feb/12 12:11
• Updated: 28/Feb/12 05:23

Description

Partially defined entity:

@Entity
@IdClass(Node2.ID.class)
public class Node2 {
@Id
@GeneratedValue
private long id;
@Id private int region = 1;
@Id private int district = 2;

@ManyToOne(fetch = LAZY)
@JoinColumns(

{ @JoinColumn(name = "PARENT_ID", referencedColumnName = "ID"), @JoinColumn(name = "REGION", referencedColumnName = "REGION"), @JoinColumn(name = "DISTRICT", referencedColumnName = "DISTRICT") }

)
private Node2 parent;

@OneToMany(mappedBy = "parent", cascade = ALL, fetch = LAZY)
private List<Node2> nodes = new ArrayList<Node2>();

// getters, setters, etc.
// full text will be attached as a unit test: TestRecursiveRelationshipsWithIdClass.testTree()

An attempt to use a such entity leads to NullPointerException :

FailedObject: org.apache.openjpa.persistence.recursive.idclass.Node2-1151::1::2 [java.lang.String]
at org.apache.openjpa.kernel.BrokerImpl.refreshInternal(BrokerImpl.java:3107)
at org.apache.openjpa.kernel.BrokerImpl.refresh(BrokerImpl.java:2998)
at org.apache.openjpa.kernel.DelegatingBroker.refresh(DelegatingBroker.java:1134)
at org.apache.openjpa.persistence.EntityManagerImpl.refresh(EntityManagerImpl.java:780)
at org.apache.openjpa.persistence.EntityManagerImpl.refresh(EntityManagerImpl.java:757)
at org.apache.openjpa.persistence.recursive.idclass.TestRecursiveRelationshipsWithIdClass.setUpInitialTree(TestRecursiveRelationshipsWithIdClass.java:130)
at org.apache.openjpa.persistence.recursive.idclass.TestRecursiveRelationshipsWithIdClass.testPreparedSQLQueryToTree(TestRecursiveRelationshipsWithIdClass.java:92)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:600)
at junit.framework.TestCase.runTest(TestCase.java:154)
at org.apache.openjpa.persistence.test.AbstractPersistenceTestCase.runTest(AbstractPersistenceTestCase.java:579)
at junit.framework.TestCase.runBare(TestCase.java:127)
at org.apache.openjpa.persistence.test.AbstractPersistenceTestCase.runBare(AbstractPersistenceTestCase.java:566)
at org.apache.openjpa.persistence.test.AbstractPersistenceTestCase.runBare(AbstractPersistenceTestCase.java:542)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at org.apache.openjpa.persistence.test.AbstractPersistenceTestCase.run(AbstractPersistenceTestCase.java:206)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:600)
at org.apache.maven.surefire.junit.JUnitTestSet.execute(JUnitTestSet.java:213)
at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.executeTestSet(AbstractDirectoryTestSuite.java:115)
at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.execute(AbstractDirectoryTestSuite.java:102)
at org.apache.maven.surefire.Surefire.run(Surefire.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:600)
at org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:350)
at org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1021)
Caused by: java.lang.NullPointerException
at org.apache.openjpa.util.ApplicationIds$PrimaryKeyFieldManager.fetchLongField(ApplicationIds.java:669)
at org.apache.openjpa.persistence.recursive.idclass.Node2.pcCopyKeyFieldsToObjectId(Node2.java)
at org.apache.openjpa.enhance.PCRegistry.copyKeyFieldsToObjectId(PCRegistry.java:171)
at org.apache.openjpa.util.ApplicationIds.fromPKValues(ApplicationIds.java:224)
at org.apache.openjpa.jdbc.meta.ClassMapping.getObjectId(ClassMapping.java:223)
at org.apache.openjpa.jdbc.meta.ClassMapping.getObjectId(ClassMapping.java:147)
at org.apache.openjpa.jdbc.meta.strats.RelationFieldStrategy.load(RelationFieldStrategy.java:736)
at org.apache.openjpa.jdbc.meta.FieldMapping.load(FieldMapping.java:928)
at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.load(JDBCStoreManager.java:1094)
at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.load(JDBCStoreManager.java:1038)
at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.load(JDBCStoreManager.java:659)
at org.apache.openjpa.util.ImplHelper.loadAll(ImplHelper.java:107)
at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.loadAll(JDBCStoreManager.java:695)
at org.apache.openjpa.kernel.DelegatingStoreManager.loadAll(DelegatingStoreManager.java:122)
at org.apache.openjpa.kernel.BrokerImpl.refreshInternal(BrokerImpl.java:3071)
... 36 more

Issue Links

• is related to: OPENJPA-2147 Inability to use Prepared SQL Query Cache and 'Identity Class' @IdClass