Posted by jkwarren on May 01 2008 in Blather
Hibernate Confuses Into Posting on Forums
Sometimes they're not so nice to people who ask for help, but I think I gave them everything they needed.
The body of the post follows. Don't be dismayed at the formatting; some of the longer lines of code appear cut off in the browser (I guess the software is trying to keep the look clean), but the code is there if you decided to copy and paste for your own edification, or if you look at the HTML source...
Hello. I'm a long-time Hibernate user, lurker on the forums, and first-time poster. I have been chasing this problem for a week, on Windows, LINUX, and Solaris, using HSQLDB, MySQL, Postgres, and Oracle, in Eclipse, NetBeans, using Ant, and by command-line Java. All of the results are the same; I'm fairly certain that I've either missed some head-slapping keyword, or there's something wrong with the way I'm trying to do this.
I'm having a problem loading a collection in a related table using a sql-query. In the real version, the query is an Oracle CONNECT BY, but the test case provided herein fails with identical errors, and the query is simple and cross-database, and meets the basic need (first-level pass) that CONNECT BY provides.
Fundamentally, one class/table (Container, in the example) has a value (realtionshipId/RELATIONSHIP_ID) that is a key to another (Relationship) that contains a value that is not the primary key/identifier (owner). The basic idea is that the Container will have zero or more Relationship items based on the class values Container.relationshipId=Relationship.owner (database values Container.RELATIONSHIP_ID=Relationship.OWNER). In the Oracle CONNECT BY, this collection is an aggregate of the parent/children in in the Relationship table, but for this example, every Container has two related Relationship entries.
The rest of this is filled in from the "new topic" suggestion.
Hibernate version:
Tested with 3.2.6, but needs to work in 3.2.1 as well as that is the version approved for use on the real problem.
For this test, I simply added the hibernate3.jar and the minimum required to allow it to run and compile, pulled straight from the hibernate zip lib directory:
asm.jar cglib-2.1.3.jar commons-collections-2.1.1.jar commons-logging-1.0.4.jar dom4j-1.6.1.jar jta.jar
Additionally, the database is right from the hsqldb.jar from that download.
Mapping documents:
Currently the collection is settled as just a bag, but I have tried to use set as well; I've toyed with map and list, but for the easy-to-reproduce test, there's more configuration than I wanted to put. Additionally, the bag is filled with elements, but I've also tried one-to-many and many-to-many, and the results are the same. These elements are in the mapping, commented out, with their attributes shown. Obviously, if this is changed, the other must be removed, or if the collection type is changed, the end tag must be corrected. Additionally, these have been tested lazy and not lazy, again, with the same results.
<?xml version="1.0"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping default-lazy="false"> <class name="Container" table="CONTAINER" mutable="false"> <id name="id" type="integer"> <column name="ID" /> </id> <property name="data" column="DATA" type="string" /> <property name="relationshipId" column="RELATIONSHIP_ID" type="integer" /> <!-- ALSO TRIED --> <!-- set name="relationships" --> <bag name="relationships"> <key property-ref="relationshipId" /> <!-- ALSO TRIED --> <!-- many-to-many class="Relationship" / --> <!-- one-to-many class="Relationship" / --> <element type="Relationship" /> <loader query-ref="loadRelationships" /> </bag> </class> <class name="Relationship" table="RELATIONSHIP" mutable="false"> <id name="id" type="integer"> <column name="ID" /> </id> <property name="owner" column="OWNER" type="integer" /> <property name="rank" column="RANK" type="integer" /> </class> <!-- LOAD RELATIONSHIPS BASED ON OWNER NOT ID --> <sql-query name="loadRelationships"> <return alias="r" class="Relationship" /> SELECT ID {r.id}, OWNER {r.owner}, RANK {r.rank} FROM RELATIONSHIP {r} WHERE OWNER=? </sql-query> </hibernate-mapping>
Code between sessionFactory.openSession() and session.close():
Here's the whole test case.
The HSQLDB is created and destroyed with the test. The tables are created and filled with Session.createSQLQuery() to simulate the real condition of the data already existing. The session is flushed, and the objects are received and populated with simple Session.get().
Just before the failure occurs, the expected collection is gathered out of the Container object by use of Session.getNamedQuery(), and that does not fail. This leads me to be certain it is not the query or the query configuration in the hbm.xml file.
The failure occurs in the test when the collection in the Container is attempted to iterate. There is a comment in the test method that warns where the exception will occur.
import java.util.List; import junit.framework.TestCase; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; public class ContainerTest extends TestCase { private static SessionFactory factory = null; private Session session = null; public ContainerTest() { if (factory == null) { final Configuration configuration = new Configuration(); configuration.setProperty("hibernate.dialect", "org.hibernate.dialect.HSQLDialect").setProperty( "hibernate.connection.driver_class", "org.hsqldb.jdbcDriver").setProperty( "hibernate.connection.url", "jdbc:hsqldb:mem:swbyjeff") .setProperty("hibernate.connection.username", "sa") .setProperty("hibernate.connection.password", "") .setProperty("hibernate.connection.pool_size", "1") .setProperty("hibernate.cache.provider_class", "org.hibernate.cache.HashtableCacheProvider") .setProperty("hibernate.show_sql", "true"); // Must create the tables before introducing ORM mappings final Session session = configuration.buildSessionFactory() .openSession(); session.createSQLQuery( "CREATE TABLE CONTAINER ( id integer identity," + " data varchar(10), relationship_id integer )") .executeUpdate(); session.createSQLQuery( "CREATE TABLE RELATIONSHIP ( id integer identity," + " owner integer, rank integer )").executeUpdate(); // Now safe to tell configuration about ORM mappings configuration.addResource("Container.hbm.xml"); // Rebuild the SessionFactory with additional configuration item factory = configuration.buildSessionFactory(); } } @SuppressWarnings("unchecked") public void testContainerLoad() throws Exception { try { for (int i = 0; i < 10; i++) { final Integer id = Integer.valueOf(i); System.out.println("Getting container " + id); final Object object = getSession().get(Container.class, id); assertTrue("Not Container: " + object, object instanceof Container); final Container container = (Container) object; System.out.println("Container " + container); assertEquals(id, container.getId()); assertEquals("Number " + id, container.getData()); assertNotNull(container.getRelationshipId()); assertNotNull(container.getRelationships()); // Using named query directly will succeed final List list = getSession().getNamedQuery( "loadRelationships").setInteger(0, container.getRelationshipId()).list(); assertNotNull(list); assertFalse(list.isEmpty()); System.out.println("Should have relationships " + list); boolean found = false; // Getting this iterator will throw NPE for (final Object containerRelationship : container .getRelationships()) { assertTrue(containerRelationship instanceof Relationship); final Relationship relationship = (Relationship) containerRelationship; System.out.println(" Got " + relationship); assertEquals(container.getRelationshipId(), relationship .getOwner()); assertTrue("Not expecting " + relationship, list .contains(relationship)); list.remove(relationship); found = true; } assertTrue("Could not find any relationship", found); assertTrue("Container didn't get all relationships! " + list, list.isEmpty()); } assertNull(getSession().get(Container.class, Integer.valueOf(10))); } catch (Exception e) { e.printStackTrace(); throw e; } } @Override protected void setUp() throws Exception { getSession().beginTransaction(); // Add data int id = 11; for (int owner = 0; owner < 10; owner++) { assertEquals(1, getSession().createSQLQuery( "INSERT INTO CONTAINER " + "(ID, DATA, RELATIONSHIP_ID) VALUES (?, ?, ?)") .setInteger(0, Integer.valueOf(owner)).setString(1, "Number " + owner).setInteger(2, Integer.valueOf(owner)).executeUpdate()); for (int rank = 1; rank < 3; rank++) { assertEquals(1, getSession().createSQLQuery( "INSERT INTO RELATIONSHIP " + "(ID, OWNER, RANK) VALUES (?, ?, ?)") .setInteger(0, Integer.valueOf(id++)).setInteger(1, Integer.valueOf(owner)).setInteger(2, Integer.valueOf(rank)).executeUpdate()); } } getSession().flush(); } @Override protected void tearDown() throws Exception { if (session != null) { session.getTransaction().rollback(); session.close(); } session = null; } private synchronized Session getSession() { if (session == null) { session = factory.openSession(); } return session; } }
The objects are trivial (getters/setters cut for brevity). Each contains an id, a trivial piece of data (data or rank), and the relating members (relationshipId -> owner). Each has equals/hashcode and a simple toString()
public class Container implements Serializable { private static final long serialVersionUID = -762978251577933701L; private String data = null; private Integer id = null; private Integer relationshipId = null; @SuppressWarnings("unchecked") private Collection relationships = null; @Override public boolean equals(final Object object) { return (object instanceof Container) && ((id == null) ? ((Container) object).id == null : id.equals(((Container) object).id)); } @Override public int hashCode() { return Long.valueOf(serialVersionUID + ((id == null) ? 0 : id.hashCode())).hashCode(); } @Override public String toString() { return this.getClass().getSimpleName() + "{id:" + id + ",data:" + data + ",relationshipId:" + relationshipId + "}"; } } public class Relationship implements Serializable { private static final long serialVersionUID = -6275441596378037221L; private Integer id = null; private Integer owner = null; private Integer rank = null; @Override public boolean equals(final Object object) { return (object instanceof Relationship) && ((id == null) ? (((Relationship) object).id == null) : id.equals(((Relationship) object).id)); } @Override public int hashCode() { return Long.valueOf(serialVersionUID + ((id == null) ? 0 : id.hashCode())).hashCode(); } @Override public String toString() { return getClass().getSimpleName() + "{id:" + id + ",owner:" + owner + ",rank:" + rank + "}"; } }
Full stack trace of any exception that occurs:
Name and version of the database you are using:
For this test, using HSQLDB v1.8.0, but in production Oracle 10G
The generated SQL (show_sql=true):
This bit is taken right from the logs (included below). The "Getting" and "Container" and "Should have relationships" comments will help align with where the code is executing.
Getting container 0 Hibernate: select container0_.ID as ID0_0_, container0_.DATA as DATA0_0_, container0_.RELATIONSHIP_ID as RELATION3_0_0_ from CONTAINER container0_ where container0_.ID=? Hibernate: SELECT ID ID2_0_, OWNER OWNER2_0_, RANK RANK2_0_ FROM RELATIONSHIP r WHERE OWNER=? Container Container{id:0,data:Number 0,relationshipId:0} Hibernate: SELECT ID ID2_0_, OWNER OWNER2_0_, RANK RANK2_0_ FROM RELATIONSHIP r WHERE OWNER=? Should have relationships [Relationship{id:11,owner:0,rank:1}, Relationship{id:12,owner:0,rank:2}] Hibernate: SELECT ID ID2_0_, OWNER OWNER2_0_, RANK RANK2_0_ FROM RELATIONSHIP r WHERE OWNER=?
Debug level Hibernate log excerpt:
Although I did build a log4j.properties and log4j.xml file, I could not get the basic configuration I have to give me debug output.
The core exception, the one that stops JUnit, is this:
java.lang.NullPointerException at org.hibernate.collection.PersistentSet.iterator(PersistentSet.java:164) at com.swbyjeff.ContainerTest.testContainerLoad(ContainerTest.java:85)
Here is the entire output from the run of the test program. Note the debug shows the package, while my "excerpts" above do not (brevity again). Occasionally the output differs as the System.err output may appear above some of the System.out output, but the indicated location (line 85) is always the same. Line 85 is the for() iterator on the Container.relationships collection.
May 1, 2008 10:03:52 AM org.hibernate.cfg.Environment <clinit> INFO: Hibernate 3.2.6 May 1, 2008 10:03:52 AM org.hibernate.cfg.Environment <clinit> INFO: hibernate.properties not found May 1, 2008 10:03:52 AM org.hibernate.cfg.Environment buildBytecodeProvider INFO: Bytecode provider name : cglib May 1, 2008 10:03:52 AM org.hibernate.cfg.Environment <clinit> INFO: using JDK 1.4 java.sql.Timestamp handling May 1, 2008 10:03:52 AM org.hibernate.connection.DriverManagerConnectionProvider configure INFO: Using Hibernate built-in connection pool (not for production use!) May 1, 2008 10:03:52 AM org.hibernate.connection.DriverManagerConnectionProvider configure INFO: Hibernate connection pool size: 1 May 1, 2008 10:03:52 AM org.hibernate.connection.DriverManagerConnectionProvider configure INFO: autocommit mode: false May 1, 2008 10:03:52 AM org.hibernate.connection.DriverManagerConnectionProvider configure INFO: using driver: org.hsqldb.jdbcDriver at URL: jdbc:hsqldb:mem:swbyjeff May 1, 2008 10:03:52 AM org.hibernate.connection.DriverManagerConnectionProvider configure INFO: connection properties: {user=sa, password=****} May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: RDBMS: HSQL Database Engine, version: 1.8.0 May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: JDBC driver: HSQL Database Engine Driver, version: 1.8.0 May 1, 2008 10:03:53 AM org.hibernate.dialect.Dialect <init> INFO: Using dialect: org.hibernate.dialect.HSQLDialect May 1, 2008 10:03:53 AM org.hibernate.transaction.TransactionFactoryFactory buildTransactionFactory INFO: Using default transaction strategy (direct JDBC transactions) May 1, 2008 10:03:53 AM org.hibernate.transaction.TransactionManagerLookupFactory getTransactionManagerLookup INFO: No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended) May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Automatic flush during beforeCompletion(): disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Automatic session close at end of transaction: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: JDBC batch size: 15 May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: JDBC batch updates for versioned data: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Scrollable result sets: enabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: JDBC3 getGeneratedKeys(): disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Connection release mode: auto May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Default batch fetch size: 1 May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Generate SQL with comments: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Order SQL updates by primary key: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Order SQL inserts for batching: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory createQueryTranslatorFactory INFO: Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory May 1, 2008 10:03:53 AM org.hibernate.hql.ast.ASTQueryTranslatorFactory <init> INFO: Using ASTQueryTranslatorFactory May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Query language substitutions: {} May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: JPA-QL strict compliance: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Second-level cache: enabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Query cache: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory createCacheProvider INFO: Cache provider: org.hibernate.cache.HashtableCacheProvider May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Optimize cache for minimal puts: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Structured second-level cache entries: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Echoing all SQL to stdout May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Statistics: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Deleted entity synthetic identifier rollback: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Default entity-mode: pojo May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Named query checking : enabled May 1, 2008 10:03:53 AM org.hibernate.impl.SessionFactoryImpl <init> INFO: building session factory May 1, 2008 10:03:53 AM org.hibernate.impl.SessionFactoryObjectFactory addInstance INFO: Not binding factory to JNDI, no JNDI name configured May 1, 2008 10:03:53 AM org.hibernate.cfg.Configuration addResource INFO: Reading mappings from resource : com/swbyjeff/orm/Container.hbm.xml May 1, 2008 10:03:53 AM org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues INFO: Mapping class: com.swbyjeff.Container -> CONTAINER May 1, 2008 10:03:53 AM org.hibernate.cfg.HbmBinder bindCollection INFO: Mapping collection: com.swbyjeff.Container.relationships -> relationships May 1, 2008 10:03:53 AM org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues INFO: Mapping class: com.swbyjeff.Relationship -> RELATIONSHIP May 1, 2008 10:03:53 AM org.hibernate.connection.DriverManagerConnectionProvider configure INFO: Using Hibernate built-in connection pool (not for production use!) May 1, 2008 10:03:53 AM org.hibernate.connection.DriverManagerConnectionProvider configure INFO: Hibernate connection pool size: 1 May 1, 2008 10:03:53 AM org.hibernate.connection.DriverManagerConnectionProvider configure INFO: autocommit mode: false May 1, 2008 10:03:53 AM org.hibernate.connection.DriverManagerConnectionProvider configure INFO: using driver: org.hsqldb.jdbcDriver at URL: jdbc:hsqldb:mem:swbyjeff May 1, 2008 10:03:53 AM org.hibernate.connection.DriverManagerConnectionProvider configure INFO: connection properties: {user=sa, password=****} May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: RDBMS: HSQL Database Engine, version: 1.8.0 May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: JDBC driver: HSQL Database Engine Driver, version: 1.8.0 May 1, 2008 10:03:53 AM org.hibernate.dialect.Dialect <init> INFO: Using dialect: org.hibernate.dialect.HSQLDialect May 1, 2008 10:03:53 AM org.hibernate.transaction.TransactionFactoryFactory buildTransactionFactory INFO: Using default transaction strategy (direct JDBC transactions) May 1, 2008 10:03:53 AM org.hibernate.transaction.TransactionManagerLookupFactory getTransactionManagerLookup INFO: No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended) May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Automatic flush during beforeCompletion(): disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Automatic session close at end of transaction: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: JDBC batch size: 15 May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: JDBC batch updates for versioned data: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Scrollable result sets: enabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: JDBC3 getGeneratedKeys(): disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Connection release mode: auto May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Default batch fetch size: 1 May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Generate SQL with comments: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Order SQL updates by primary key: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Order SQL inserts for batching: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory createQueryTranslatorFactory INFO: Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory May 1, 2008 10:03:53 AM org.hibernate.hql.ast.ASTQueryTranslatorFactory <init> INFO: Using ASTQueryTranslatorFactory May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Query language substitutions: {} May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: JPA-QL strict compliance: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Second-level cache: enabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Query cache: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory createCacheProvider INFO: Cache provider: org.hibernate.cache.HashtableCacheProvider May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Optimize cache for minimal puts: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Structured second-level cache entries: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Echoing all SQL to stdout May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Statistics: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Deleted entity synthetic identifier rollback: disabled May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Default entity-mode: pojo May 1, 2008 10:03:53 AM org.hibernate.cfg.SettingsFactory buildSettings INFO: Named query checking : enabled May 1, 2008 10:03:53 AM org.hibernate.impl.SessionFactoryImpl <init> INFO: building session factory May 1, 2008 10:03:54 AM org.hibernate.impl.SessionFactoryObjectFactory addInstance INFO: Not binding factory to JNDI, no JNDI name configured Hibernate: CREATE TABLE CONTAINER ( id integer identity, data varchar(10), relationship_id integer ) Hibernate: CREATE TABLE RELATIONSHIP ( id integer identity, owner integer, rank integer ) Hibernate: INSERT INTO CONTAINER (ID, DATA, RELATIONSHIP_ID) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO CONTAINER (ID, DATA, RELATIONSHIP_ID) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO CONTAINER (ID, DATA, RELATIONSHIP_ID) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO CONTAINER (ID, DATA, RELATIONSHIP_ID) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO CONTAINER (ID, DATA, RELATIONSHIP_ID) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO CONTAINER (ID, DATA, RELATIONSHIP_ID) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO CONTAINER (ID, DATA, RELATIONSHIP_ID) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO CONTAINER (ID, DATA, RELATIONSHIP_ID) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO CONTAINER (ID, DATA, RELATIONSHIP_ID) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO CONTAINER (ID, DATA, RELATIONSHIP_ID) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Hibernate: INSERT INTO RELATIONSHIP (ID, OWNER, RANK) VALUES (?, ?, ?) Getting container0 Hibernate: select container0_.ID as ID0_0_, container0_.DATA as DATA0_0_, container0_.RELATIONSHIP_ID as RELATION3_0_0_ from CONTAINER container0_ where container0_.ID=? Hibernate: SELECT ID ID2_0_, OWNER OWNER2_0_, RANK RANK2_0_ FROM RELATIONSHIP r WHERE OWNER=? Container Container{id:0,data:Number 0,relationshipId:0} Hibernate: SELECT ID ID2_0_, OWNER OWNER2_0_, RANK RANK2_0_ FROM RELATIONSHIP r WHERE OWNER=? Should have relationships [Relationship{id:11,owner:0,rank:1}, Relationship{id:12,owner:0,rank:2}] Hibernate: SELECT ID ID2_0_, OWNER OWNER2_0_, RANK RANK2_0_ FROM RELATIONSHIP r WHERE OWNER=? java.lang.NullPointerException at org.hibernate.collection.PersistentBag.iterator(PersistentBag.java:250) at com.swbyjeff.ContainerTest.testContainerLoad(ContainerTest.java:85) 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:585) at junit.framework.TestCase.runTest(TestCase.java:164) at junit.framework.TestCase.runBare(TestCase.java:130) 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:120) at junit.framework.TestSuite.runTest(TestSuite.java:230) at junit.framework.TestSuite.run(TestSuite.java:225) at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
