<?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 package="com.stone.prop.bean">
   <class name="BusinessProperties" table="BUSINESS_PROPERTIES">
      <id
         column="BP_ID"
         name="id"
         type="java.lang.Long"
      >
         <generator class="native" />
      </id>
      <property
         column="PROP_KEY"
         length="100"
         name="propKey"
         not-null="false"
         type="string"
       />
      <property
         column="DISCRIBE"
         length="200"
         name="discribe"
         not-null="false"
         type="string"
       />
      <property
         column="ORG_CODE"
         length="20"
         name="orgCode"
         not-null="false"
         type="string"
       />
      <property
         column="PROP_VALUE"
         length="200"
         name="propValue"
         not-null="false"
         type="string"
       />
      <property
         column="CREATE_DATE"
         length="23"
         name="createDate"
         not-null="false"
         type="timestamp"
       />
      <property
         column="VALID_DATE"
         length="23"
         name="validDate"
         not-null="false"
         type="timestamp"
       />
      <property
         column="INVALID_DATE"
         length="23"
         name="invalidDate"
         not-null="false"
         type="timestamp"
       />
      <property
         column="PROP_GROUP"
         length="10"
         name="propGroup"
         not-null="false"
         type="string"
       />
   </class>
</hibernate-mapping>

org.hibernate.exception.ConstraintViolationException: could not insert: [com.stone.prop.bean.BusinessProperties]
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:69)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:1986)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2405)
at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:37)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:243)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:269)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:167)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:101)
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:544)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:533)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:529)
at com.stone.prop.dao.base.BaseRootDAO.save(BaseRootDAO.java:627)
at com.stone.prop.dao.base.BaseRootDAO.save(BaseRootDAO.java:608)
at com.stone.prop.dao.base.BaseBusinessPropertiesDAO.save(BaseBusinessPropertiesDAO.java:76)
at com.stone.prop.BusinessPropertiesManager.save(BusinessPropertiesManager.java:137)
at com.stone.prop.BusinessPropertiesManagerTest.main(BusinessPropertiesManagerTest.java:16)
Caused by: java.sql.SQLException: could not insert NULL value to  'BP_ID'，in table 'oa_prop.dbo.BUSINESS_PROPERTIES'；

at net.sourceforge.jtds.jdbc.SQLDiagnostic.addDiagnostic(SQLDiagnostic.java:364)
at net.sourceforge.jtds.jdbc.TdsCore.tdsErrorToken(TdsCore.java:2754)
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2195)
at net.sourceforge.jtds.jdbc.TdsCore.getMoreResults(TdsCore.java:620)
at net.sourceforge.jtds.jdbc.JtdsStatement.processResults(JtdsStatement.java:483)
at net.sourceforge.jtds.jdbc.JtdsStatement.executeSQL(JtdsStatement.java:445)
at net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeUpdate(JtdsPreparedStatement.java:402)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:1968)
... 19 more

MS SQL SERVICE 2000

Hibernate: select this_.BP_ID as BP1_0_0_, this_.PROP_KEY as PROP2_0_0_, this_.DISCRIBE as DISCRIBE0_0_, this_.ORG_CODE as ORG4_0_0_, this_.PROP_VALUE as PROP5_0_0_, this_.CREATE_DATE as CREATE6_0_0_, this_.VALID_DATE as VALID7_0_0_, this_.INVALID_DATE as INVALID8_0_0_, this_.PROP_GROUP as PROP9_0_0_ from BUSINESS_PROPERTIES this_
Hibernate: insert into BUSINESS_PROPERTIES (PROP_KEY, DISCRIBE, ORG_CODE, PROP_VALUE, CREATE_DATE, VALID_DATE, INVALID_DATE, PROP_GROUP) values (?, ?, ?, ?, ?, ?, ?, ?)