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Hibernate version: 3.1

Mapping documents:

<?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>
<class name="transactions.TransactionElement" table="TRANSACTIONS">
<id name="txn_no" column="TRANSACTION_NO">
<generator class="assigned"/>
</id>

<many-to-one name="references1" class="transactions.Reference1"
cascade="none" outer-join="auto" update="true" insert="true"
column="REFERENCE1_CODE" lazy="false"/>

</class>

<class name="transactions.Reference1" table="REFERENCE1">
<id name="ref1_code" column="REFERENCE1_CODE">
<generator class="assigned"/>
</id>
<property name="ref_desc" column="REFERENCE_DESCRIPTION"/>

<set name="references1" table="TRANSACTIONS" lazy="false">
<key column="REFERENCE1_CODE" />
<one-to-many class="transactions.TransactionElement"/>
</set>

</hibernate-mapping>


Code between sessionFactory.openSession() and session.close():

Session session = HibernateUtil.getSessionFactory().getCurrentSession();
session.beginTransaction();
TransactionElement aTransaction = new TransactionElement();
aTransaction.setTxn_no(nTransactions);
aTransaction.setReferences1(refa);
aTransaction.setReferences2(refb);
aTransaction.setReferences3(refc);
session.save(aTransaction);
session.getTransaction().commit();


Full stack trace of any exception that occurs:

14:30:30,578 INFO HbmBinder:309 - Mapping class: transactions.TransactionElement -> TRANSACTIONS
14:30:30,734 INFO HbmBinder:309 - Mapping class: transactions.Child1 -> CHILD1
14:30:30,734 INFO HbmBinder:309 - Mapping class: transactions.Child2 -> CHILD2
14:30:30,734 INFO HbmBinder:309 - Mapping class: transactions.Child3 -> CHILD3
14:30:30,734 INFO HbmBinder:309 - Mapping class: transactions.Reference1 -> REFERENCE1
14:30:30,750 INFO HbmBinder:309 - Mapping class: transactions.Reference2 -> REFERENCE2
14:30:30,750 INFO HbmBinder:309 - Mapping class: transactions.Reference3 -> REFERENCE3
14:30:30,750 INFO Configuration:1419 - Configured SessionFactory: null
14:30:30,750 INFO HbmBinder:2349 - Mapping collection: transactions.TransactionElement.firstChildren -> CHILD1
14:30:30,765 INFO HbmBinder:2349 - Mapping collection: transactions.TransactionElement.secondChildren -> CHILD2
14:30:30,765 INFO HbmBinder:2349 - Mapping collection: transactions.TransactionElement.thirdChildren -> CHILD3
14:30:30,765 INFO HbmBinder:2349 - Mapping collection: transactions.Reference1.references1 -> TRANSACTIONS
14:30:30,765 INFO HbmBinder:2349 - Mapping collection: transactions.Reference2.references2 -> TRANSACTIONS
14:30:30,765 INFO HbmBinder:2349 - Mapping collection: transactions.Reference3.references3 -> TRANSACTIONS
14:30:30,781 INFO DriverManagerConnectionProvider:41 - Using Hibernate built-in connection pool (not for production use!)
14:30:30,781 INFO DriverManagerConnectionProvider:42 - Hibernate connection pool size: 1
14:30:30,781 INFO DriverManagerConnectionProvider:45 - autocommit mode: false
14:30:30,781 INFO DriverManagerConnectionProvider:80 - using driver: org.hsqldb.jdbcDriver at URL: jdbc:hsqldb:hsql://localhost
14:30:30,781 INFO DriverManagerConnectionProvider:86 - connection properties: {user=sa, password=****}
14:30:30,937 INFO SettingsFactory:77 - RDBMS: HSQL Database Engine, version: 1.8.0
14:30:30,937 INFO SettingsFactory:78 - JDBC driver: HSQL Database Engine Driver, version: 1.8.0
14:30:30,968 INFO Dialect:103 - Using dialect: org.hibernate.dialect.HSQLDialect
14:30:31,000 INFO TransactionFactoryFactory:31 - Using default transaction strategy (direct JDBC transactions)
14:30:31,000 INFO TransactionManagerLookupFactory:33 - No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended)
14:30:31,000 INFO SettingsFactory:125 - Automatic flush during beforeCompletion(): disabled
14:30:31,000 INFO SettingsFactory:129 - Automatic session close at end of transaction: disabled
14:30:31,000 INFO SettingsFactory:136 - JDBC batch size: 15
14:30:31,000 INFO SettingsFactory:139 - JDBC batch updates for versioned data: disabled
14:30:31,000 INFO SettingsFactory:144 - Scrollable result sets: enabled
14:30:31,000 INFO SettingsFactory:152 - JDBC3 getGeneratedKeys(): disabled
14:30:31,000 INFO SettingsFactory:160 - Connection release mode: auto
14:30:31,015 INFO SettingsFactory:187 - Default batch fetch size: 1
14:30:31,015 INFO SettingsFactory:191 - Generate SQL with comments: disabled
14:30:31,015 INFO SettingsFactory:195 - Order SQL updates by primary key: disabled
14:30:31,015 INFO SettingsFactory:338 - Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
14:30:31,015 INFO ASTQueryTranslatorFactory:24 - Using ASTQueryTranslatorFactory
14:30:31,015 INFO SettingsFactory:203 - Query language substitutions: {}
14:30:31,015 INFO SettingsFactory:209 - Second-level cache: enabled
14:30:31,015 INFO SettingsFactory:213 - Query cache: disabled
14:30:31,015 INFO SettingsFactory:325 - Cache provider: org.hibernate.cache.NoCacheProvider
14:30:31,015 INFO SettingsFactory:228 - Optimize cache for minimal puts: disabled
14:30:31,015 INFO SettingsFactory:237 - Structured second-level cache entries: disabled
14:30:31,031 INFO SettingsFactory:257 - Echoing all SQL to stdout
14:30:31,031 INFO SettingsFactory:264 - Statistics: disabled
14:30:31,031 INFO SettingsFactory:268 - Deleted entity synthetic identifier rollback: disabled
14:30:31,031 INFO SettingsFactory:283 - Default entity-mode: pojo
14:30:31,078 INFO SessionFactoryImpl:153 - building session factory
14:30:31,718 INFO SessionFactoryObjectFactory:82 - Not binding factory to JNDI, no JNDI name configured
14:30:31,734 INFO SchemaExport:155 - Running hbm2ddl schema export
14:30:31,734 DEBUG SchemaExport:173 - import file not found: /import.sql
14:30:31,734 INFO SchemaExport:182 - exporting generated schema to database
14:30:31,734 DEBUG SchemaExport:296 - alter table CHILD1 drop constraint FK766DA2B5FA892A59
14:30:31,734 DEBUG SchemaExport:296 - alter table CHILD2 drop constraint FK766DA2B6FA892A59
14:30:31,750 DEBUG SchemaExport:296 - alter table CHILD3 drop constraint FK766DA2B7FA892A59
14:30:31,750 DEBUG SchemaExport:296 - alter table TRANSACTIONS drop constraint FKFE9871555CED4E25
14:30:31,750 DEBUG SchemaExport:296 - alter table TRANSACTIONS drop constraint FKFE9871555B387585
14:30:31,750 DEBUG SchemaExport:296 - alter table TRANSACTIONS drop constraint FKFE98715559839CE5
14:30:31,750 DEBUG SchemaExport:296 - drop table CHILD1 if exists
14:30:31,750 DEBUG SchemaExport:296 - drop table CHILD2 if exists
14:30:31,750 DEBUG SchemaExport:296 - drop table CHILD3 if exists
14:30:31,750 DEBUG SchemaExport:296 - drop table REFERENCE1 if exists
14:30:31,750 DEBUG SchemaExport:296 - drop table REFERENCE2 if exists
14:30:31,750 DEBUG SchemaExport:296 - drop table REFERENCE3 if exists
14:30:31,765 DEBUG SchemaExport:296 - drop table TRANSACTIONS if exists
14:30:31,765 DEBUG SchemaExport:296 - create table CHILD1 (CHILD1_ID integer not null, DESCRIPTION1 varchar(255), DESCRIPTION2 varchar(255), DESCRIPTION3 varchar(255), TRANSACTION_NO integer, primary key (CHILD1_ID))
14:30:31,765 DEBUG SchemaExport:296 - create table CHILD2 (CHILD2_ID integer not null, DESCRIPTION1 varchar(255), DESCRIPTION2 varchar(255), DESCRIPTION3 varchar(255), TRANSACTION_NO integer, primary key (CHILD2_ID))
14:30:31,765 DEBUG SchemaExport:296 - create table CHILD3 (CHILD3_ID integer not null, DESCRIPTION1 varchar(255), DESCRIPTION2 varchar(255), DESCRIPTION3 varchar(255), TRANSACTION_NO integer, primary key (CHILD3_ID))
14:30:31,765 DEBUG SchemaExport:296 - create table REFERENCE1 (REFERENCE1_CODE varchar(255) not null, REFERENCE_DESCRIPTION varchar(255), primary key (REFERENCE1_CODE))
14:30:31,781 DEBUG SchemaExport:296 - create table REFERENCE2 (REFERENCE2_CODE varchar(255) not null, REFERENCE_DESCRIPTION varchar(255), primary key (REFERENCE2_CODE))
14:30:31,781 DEBUG SchemaExport:296 - create table REFERENCE3 (REFERENCE3_CODE varchar(255) not null, REFERENCE_DESCRIPTION varchar(255), primary key (REFERENCE3_CODE))
14:30:31,781 DEBUG SchemaExport:296 - create table TRANSACTIONS (TRANSACTION_NO integer not null, REFERENCE1_CODE varchar(255), REFERENCE2_CODE varchar(255), REFERENCE3_CODE varchar(255), primary key (TRANSACTION_NO))
14:30:31,781 DEBUG SchemaExport:296 - alter table CHILD1 add constraint FK766DA2B5FA892A59 foreign key (TRANSACTION_NO) references TRANSACTIONS
14:30:31,781 DEBUG SchemaExport:296 - alter table CHILD2 add constraint FK766DA2B6FA892A59 foreign key (TRANSACTION_NO) references TRANSACTIONS
14:30:31,781 DEBUG SchemaExport:296 - alter table CHILD3 add constraint FK766DA2B7FA892A59 foreign key (TRANSACTION_NO) references TRANSACTIONS
14:30:31,781 DEBUG SchemaExport:296 - alter table TRANSACTIONS add constraint FKFE9871555CED4E25 foreign key (REFERENCE3_CODE) references REFERENCE3
14:30:31,781 DEBUG SchemaExport:296 - alter table TRANSACTIONS add constraint FKFE9871555B387585 foreign key (REFERENCE2_CODE) references REFERENCE2
14:30:31,781 DEBUG SchemaExport:296 - alter table TRANSACTIONS add constraint FKFE98715559839CE5 foreign key (REFERENCE1_CODE) references REFERENCE1
14:30:31,796 INFO SchemaExport:202 - schema export complete
14:30:31,968 ERROR BasicPropertyAccessor:167 - IllegalArgumentException in class: transactions.Reference1, getter method of property: ref1_code


Name and version of the database you are using: hsqldb.jar

The generated SQL (show_sql=true):

Debug level Hibernate log excerpt:

14:30:29,828 INFO Environment:479 - Hibernate 3.1.2
14:30:29,843 INFO Environment:509 - hibernate.properties not found
14:30:29,843 INFO Environment:525 - using CGLIB reflection optimizer
14:30:29,843 INFO Environment:555 - using JDK 1.4 java.sql.Timestamp handling
14:30:29,953 INFO Configuration:1308 - configuring from resource: /hibernate.cfg.xml
14:30:29,953 INFO Configuration:1285 - Configuration resource: /hibernate.cfg.xml
14:30:30,359 INFO Configuration:469 - Reading mappings from resource: transactions/TransactionElement.hbm.xml
org.hibernate.PropertyAccessException: IllegalArgumentException occurred calling getter of transactions.Reference1.ref1_code
at org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:171)
at org.hibernate.tuple.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:176)
at org.hibernate.persister.entity.AbstractEntityPersister.getIdentifier(AbstractEntityPersister.java:3257)
at org.hibernate.persister.entity.AbstractEntityPersister.isTransient(AbstractEntityPersister.java:2983)
at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:181)
at org.hibernate.engine.ForeignKeys$Nullifier.isNullifiable(ForeignKeys.java:137)
at org.hibernate.engine.ForeignKeys$Nullifier.nullifyTransientReferences(ForeignKeys.java:69)
at org.hibernate.engine.ForeignKeys$Nullifier.nullifyTransientReferences(ForeignKeys.java:47)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:263)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:167)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:114)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:186)
at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:175)
at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:559)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:547)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:543)
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.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:301)
at $Proxy0.save(Unknown Source)
at transactions.TransactionManager.createAndStoreTransaction(TransactionManager.java:184)
at transactions.TransactionManager.main(TransactionManager.java:27)
Caused by: java.lang.IllegalArgumentException: object is not an instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:145)
... 26 more

You seem to have an illegal (or even NO) getter method for "ref1_code" specified in this mapping:

Uhm.. I did not even use the Reference1 class yet.. and I did not use any of the methods or called any method under the Reference1 class. I just wanted to insert aTransaction into the database.. Do you think the problem has to do with the association between TransactionElement class and Reference1 class? How can I solve this problem? thanks... I've been trying to solve this for hours... *newbie*

From the stack trace, it seems Hibernate is calling the getter and receives a IllegalArgumentException. It this happens, that's because an instance of Reference1 is somehow attached to the session, either directly or indirectly (e.g. you saved something that refers Reference1 and has a cascading save).