10:25 p.m.
entity-name attribute's syntax not clearly documented
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Key: HHH-2295
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2295
Project: Hibernate3
Type: Bug
Components: documentation
Versions: 3.2.1
Environment: Windows XP/JDK 1.5/HypersonicSQL
Reporter: Jeremy Michael Crosbie
Priority: Minor
Attachments: Group.hbm.xml
Setting entity-name to a value containing a hyphen, in my case 'lender-group'
causes odd behaviors seemingly only when calling get() or load(). Also in my case I am
mapping a class to two different tables (attached). The first mapping has an entity name
with a hyphen, the other does not. When I call load *after committing a transaction where
a new entity is persisted* I get an exception (see below). The exception complains of a
column called "LENDER" not existing. But once I change the entity-name to
something like 'lendergroup' the problem goes away. Interestingly, the missing
column complained about is the text before the hyphen, so if I name the entity
'lndr-group' it complains of a column name 'LNDR' not existing.
It almost appears if this format is assuming some sort of discriminator, but the online
docs are terse when it comes to describing the entity-name field.
Exception:
org.hibernate.exception.SQLGrammarException: could not load an entity: [lender-group#G9]
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:67)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
at org.hibernate.loader.Loader.loadEntity(Loader.java:1799)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:47)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:41)
at
org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:2730)
at
org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:365)
at
org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:346)
at
org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:123)
at
org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:177)
at
org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:87)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:862)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:799)
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
org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:301)
at $Proxy0.get(Unknown Source)
at com.fares.mtrac.group.GroupDaoImpl.findById(GroupDaoImpl.java:148)
at
com.fares.mtrac.group.GroupDaoImplTest.testFindByIdStringCompanyType(GroupDaoImplTest.java:256)
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:128)
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)
Caused by: java.sql.SQLException: Column not found: LENDER in statement [select
lender-gro0_.group_cd as group1_48_0_, lender-gro0_.group_nm as group2_48_0_,
lender-gro0_.user_nm as user3_48_0_ from lender_group_name lender-gro0_ where
lender-gro0_.group_cd=?]
at org.hsqldb.jdbc.Util.throwError(Unknown Source)
at org.hsqldb.jdbc.jdbcPreparedStatement.<init>(Unknown Source)
at org.hsqldb.jdbc.jdbcConnection.prepareStatement(Unknown Source)
at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:442)
at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:368)
at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:105)
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1561)
at org.hibernate.loader.Loader.doQuery(Loader.java:661)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
at org.hibernate.loader.Loader.loadEntity(Loader.java:1785)
... 36 more
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