Hello, I have the following DB tables:
Code:
CREATE TABLE DS_NVALUES(
id Number NOT NULL,
value1 Number(3,0),
value2 Number(3,0),
CONSTRAINT ds_nvalues_id PRIMARY KEY (id)
)
CREATE TABLE DS_AREA(
id Number NOT NULL,
id_nvalues Varchar2(15),
n_c Number(4,0),
CONSTRAINT ds_area_id PRIMARY KEY (id)
)
One DSNValue can has a list of DSAreas.
These are the mapping files:
Code:
<hibernate-mapping package="es.entities">
<class name="DSValues" table="ds_nvalues" lazy="false">
<id name="id" column="id">
<generator class="org.hibernate.id.MultipleHiLoPerTableGenerator">
<param name="table">igea_codigos</param>
<param name="primary_key_column">nombre</param>
<param name="value_column">codigo</param>
<param name="primary_key_value">ds_nvalues</param>
<param name="max_lo">0</param>
</generator>
</id>
<property name="value1" column="value1"/>
<property name="value2" column="value2"/>
<property name="codedId" formula="encode_id('ds_nvalues', id)"/>
<bag name="areas" table="ds_area" cascade="save-update, delete" fetch="select" lazy="false" inverse="true" >
<key property-ref="codedId">
<column name="id_nvalues"/>
</key>
<one-to-many class="es.entities.DSArea" not-found="exception" />
</bag>
</class>
</hibernate-mapping>
<hibernate-mapping package="es.entities">
<class name="DSArea" table="ds_area" lazy="false">
<id name="id" column="id">
<generator class="org.hibernate.id.MultipleHiLoPerTableGenerator">
<param name="table">igea_codigos</param>
<param name="primary_key_column">nombre</param>
<param name="value_column">codigo</param>
<param name="primary_key_value">ds_area</param>
<param name="max_lo">0</param>
</generator>
</id>
<property name="n_c" column="n_c"/>
<many-to-one name="dsValues" class="es.entities.DSValues" unique="true" fetch="select">
<column name="id_nvalues" write="encode_id('ds_nvalues', ?)" read="decode_id(id_nvalues)"/>
</many-to-one>
</class>
</hibernate-mapping>
And when I create a new DSNValue I hace the following code:
Code:
DSArea area1 = new DSArea();
area1.setN_c(300);
List<DSArea> areas = new ArrayList<DSArea>();
areas.add(area1);
DSValues dsValues = new DSValues();
dsValues.setValue1(3);
dsValues.setValue2(4);
dsValues.setAreas(areas);
area1.setDsValues(dsValues);
Session session = getCurrentSession();
Transaction t = session.beginTransaction();
try{
session.save(dsValues);
t.commit();
}catch(Exception e){
t.rollback();
}
t.commit throws a NullPointerException, but in the hibernate log I can see the INSERT statements an its values and they are ok. For selecting the DB elements this mapping configuration works fine. What can be happening?
Code:
java.lang.NullPointerException at org.hibernate.type.descriptor.java.AbstractTypeDescriptor.extractHashCode(AbstractTypeDescriptor.java:88)
at org.hibernate.type.AbstractStandardBasicType.getHashCode(AbstractStandardBasicType.java:210)
at org.hibernate.type.AbstractStandardBasicType.getHashCode(AbstractStandardBasicType.java:214)
at org.hibernate.engine.spi.CollectionKey.generateHashCode(CollectionKey.java:86)
at org.hibernate.engine.spi.CollectionKey.<init>(CollectionKey.java:74)
at org.hibernate.engine.spi.CollectionKey.<init>(CollectionKey.java:50)
at org.hibernate.event.internal.AbstractFlushingEventListener.postFlush(AbstractFlushingEventListener.java:369)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:53)
at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1233)
at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:403)
at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:101)
at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:175)
at es.indra.rbc.da.impl.oracle.dao.OracleElementDAO.insert(OracleElementDAO.java:51)
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