Hi Friends,
I am using Hibernate3 with Spring.
I am using one Bean class name : Samle.(With Annotations)
Inside that i am tryingn to map SOAP Recomendation is one bean using ManyToOne(FetchType.Lazy) like below..

@Entity
@Table(name="SOAP_SAMPLE")
@SequenceGenerator(name="SEQ_STORE",sequenceName="SOAP_SAMPLE_SEQ",allocationSize=1)
public class Sample implements Serializable{

/**
*
*/
private static final long serialVersionUID = -2103129994964857010L;

private Long sampleId;

private Date labDate;

private Date receivedDate;

private Long sampleNumber;

private Long oilAdded;

private Long msp;

private Long cycles;

private Long resampleHrs;

private Double filterWeight;

private Long filterHrs;

private String tsn;

private String tso;

private boolean conformingContainer;

private Date sampleDate;

private Long oilHrs;

private boolean unknownSample;

private Organization labOrganization;

private OilCode oilCode;

private Equipment equipment;

private String vehicleType;

private String vehicleSerialNumber;

private User responsibleEmployee;

private String maintenancePerformed;

private SOAPProcessStage processStage;

private SOAPRecommendation recommendation;

private String labComment;

private String internalComment;

private Date currentProcessStageEntryTime;

private SoapContact soapContact;

private User processStageUser;

private SoapContact sendKitToContact;

private String recommendationGivenUserName;

@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "SEND_KIT_TO")
public SoapContact getSendKitToContact() {
return sendKitToContact;
}

public void setSendKitToContact(SoapContact sendKitToContact) {
this.sendKitToContact = sendKitToContact;
}

@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "PRCS_STG_OWNR_USER_ID")
public User getProcessStageUser() {
return processStageUser;
}

public void setProcessStageUser(User processStageUser) {
this.processStageUser = processStageUser;
}

@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name="CONTACT_ID")
public SoapContact getSoapContact() {
return soapContact;
}

public void setSoapContact(SoapContact soapContact) {
this.soapContact = soapContact;
}

@Column(name="CURR_PRCS_STG_ENTRY_TM")
public Date getCurrentProcessStageEntryTime() {
return currentProcessStageEntryTime;
}

public void setCurrentProcessStageEntryTime(Date currentProcessStageEntryTime) {
this.currentProcessStageEntryTime = currentProcessStageEntryTime;
}


@Column(name="INTERNAL_COMMENT")
public String getInternalComment() {
return internalComment;
}

public void setInternalComment(String internalComment) {
this.internalComment = internalComment;
}

@Column(name="LAB_COMMENT")
public String getLabComment() {
return labComment;
}

public void setLabComment(String labComment) {
this.labComment = labComment;
}

@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name="SAMPLE_RCMD_CD")
public SOAPRecommendation getRecommendation() {
return recommendation;
}

public void setRecommendation(SOAPRecommendation recommendation) {
this.recommendation = recommendation;
}

@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name="PRCS_STAGE_ID")
public SOAPProcessStage getProcessStage() {
return processStage;
}

public void setProcessStage(SOAPProcessStage processStage) {
this.processStage = processStage;
}

@Column(name="MNTC_PRFM")
public String getMaintenancePerformed() {
return maintenancePerformed;
}

public void setMaintenancePerformed(String maintenancePerformed) {
this.maintenancePerformed = maintenancePerformed;
}

@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name="ANALYST_USER_ID")
public User getResponsibleEmployee() {
return responsibleEmployee;
}

public void setResponsibleEmployee(User responsibleEmployee) {
this.responsibleEmployee = responsibleEmployee;
}
@ManyToOne(targetEntity = EquipmentBean.class,fetch = FetchType.LAZY)
@JoinColumn(name="EQUIPMENT_ID")
public Equipment getEquipment() {
return equipment;
}

public void setEquipment(Equipment equipment) {
this.equipment = equipment;
}
@ManyToOne(fetch=FetchType.LAZY)
@JoinColumn(name="LAB_ORG_ID")
public Organization getLabOrganization() {
return labOrganization;
}

public void setLabOrganization(Organization labOrganization) {
this.labOrganization = labOrganization;
}

@Column(name="LAB_DT")
public Date getLabDate() {
return labDate;
}

public void setLabDate(Date labDate) {
this.labDate = labDate;
}

@Column(name="VEHICLE_SERIAL_NUM")
public String getVehicleSerialNumber() {
return vehicleSerialNumber;
}

public void setVehicleSerialNumber(String vehicleSerialNumber) {
this.vehicleSerialNumber = vehicleSerialNumber;
}

@Column(name="SAMPLE_VEHICLE_TYPE")
public String getVehicleType() {
return vehicleType;
}

public void setVehicleType(String vehicleType) {
this.vehicleType = vehicleType;
}

@Column(name="SAMPLE_RCV_DT")
public Date getReceivedDate() {
return receivedDate;
}

public void setReceivedDate(Date receivedDate) {
this.receivedDate = receivedDate;
}
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name="OIL_CD")
public OilCode getOilCode() {
return oilCode;
}

public void setOilCode(OilCode oilCode) {
this.oilCode = oilCode;
}

@Column(name="SAMPLE_DT")
public Date getSampleDate() {
return sampleDate;
}

public void setSampleDate(Date sampleDate) {
this.sampleDate = sampleDate;
}

@Column(name="OIL_HOURS")
public Long getOilHrs() {
return oilHrs;
}

public void setOilHrs(Long oilHrs) {
this.oilHrs = oilHrs;
}
@Column(name="UNKNOWN_SAMPLE_DT_IND")
@Type(type="yes_no")
public boolean isUnknownSample() {
return unknownSample;
}

public void setUnknownSample(boolean unknownSample) {
this.unknownSample = unknownSample;
}
@Column(name="SAMPLE_NUM")
public Long getSampleNumber() {
return sampleNumber;
}

public void setSampleNumber(Long sampleNumber) {
this.sampleNumber = sampleNumber;
}

@Column(name="OIL_ADDED")
public Long getOilAdded() {
return oilAdded;
}

public void setOilAdded(Long oilAdded) {
this.oilAdded = oilAdded;
}

@Column(name="FILTER_HOURS")
public Long getFilterHrs() {
return filterHrs;
}

public void setFilterHrs(Long filterHrs) {
this.filterHrs = filterHrs;
}
@Column(name="TSN")
public String getTsn() {
return tsn;
}

public void setTsn(String tsn) {
this.tsn = tsn;
}
@Column(name="TSO")
public String getTso() {
return tso;
}

public void setTso(String tso) {
this.tso = tso;
}

@Column(name="CONTAN_CNFRM")
@Type(type="yes_no")
public boolean isConformingContainer() {
return conformingContainer;
}

public void setConformingContainer(boolean conformingContainer) {
this.conformingContainer = conformingContainer;
}

@Column(name="CYCLES")
public Long getCycles() {
return cycles;
}

public void setCycles(Long cycles) {
this.cycles = cycles;
}

@Column(name="MSP")
public Long getMsp() {
return msp;
}

public void setMsp(Long msp) {
this.msp = msp;
}
@Id
@Column(name="SAMPLE_ID")
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator="SEQ_STORE")
public Long getSampleId() {
return sampleId;
}

public void setSampleId(Long sampleId) {
this.sampleId = sampleId;
}

@Column(name="FILTER_WEIGHT")
public Double getFilterWeight() {
return filterWeight;
}

public void setFilterWeight(Double filterWeight) {
this.filterWeight = filterWeight;
}

@Column(name="RESAMPLE_HOURS")
public Long getResampleHrs() {
return resampleHrs;
}

public void setResampleHrs(Long resampleHrs) {
this.resampleHrs = resampleHrs;
}


/**
* @return Returns the createdByUserId.
*/
@Column(name = "CREATED_BY_USER_ID", nullable = false, updatable = false)
public String getCreatedByUserId() {
return super.getCreatedByUserId();
}

/**
* @return Returns the createdOnDate.
*/
@Column(name = "CREATED_ON_DT", nullable = false, updatable = false)
public Date getCreatedOnDate() {
return super.getCreatedOnDate();
}

/**
* @return Returns the updatedByUserId.
*/
@Column(name = "UPDATED_BY_USER_ID", nullable = false)
public String getUpdatedByUserId() {
return super.getUpdatedByUserId();
}

/**
* @return Returns the updatedOnDate.
*/
@Column(name = "UPDATED_ON_DT", nullable = false)
public Date getUpdatedOnDate() {
return super.getUpdatedOnDate();
}

/* (non-Javadoc)
* @see java.lang.Object#toString()
*/
public String toString()
{
return "Sample Number : "+this.getSampleNumber()+" ,Lab code : "+this.getLabOrganization().getLabCode()
+" Sample Date : "+this.getSampleDate()+" Received Date :"+this.getReceivedDate()+
" Equipment : "+this.getEquipment().getEquipSerialNum()+" Equipment Hierarchy : "+this.getEquipment().getEquipmentHierarchy().getHierarchyName();
}

/* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
public int hashCode()
{
return this.getSampleNumber().intValue() * Long.valueOf(this.getLabOrganization().getOrgId()).intValue()
* Long.valueOf(this.getReceivedDate().getTime()).intValue();
}

/* (non-Javadoc)
* @see java.lang.Object#equals(java.lang.Object)
*/
public boolean equals(Object object)
{
if(object instanceof Sample)
{
Sample sample = (Sample)object;
if(sample.getSampleId().equals(this.getSampleId()) && sample.getSampleNumber().equals(this.getSampleNumber()) && sample.getSampleDate().equals(this.getSampleDate())
&& sample.getLabOrganization().getLabCode().equals(this.getLabOrganization().getLabCode()) &&
sample.getReceivedDate().equals(this.receivedDate) && sample.getEquipment().equals(this.getEquipment()))
{
return true;
}else{
return false;
}
}else{
return false;
}
}

}


ChildBean : SOAP Recommendation is:

@Entity
@Table(name = "SOAP_ANLYSS_RCMD")
public class SOAPRecommendation implements Serializable{
/**
*
*/
private static final long serialVersionUID = -3621069472867178095L;

private String code;

private String description;

@Id
@Column(name="RCMD_CD")
public String getCode() {
return code;
}

public void setCode(String code) {
this.code = code;
}

@Column(name="RCMD_DESC")
public String getDescription() {
return description;
}

public void setDescription(String description) {
this.description = description;
}

/**
* @return Returns the createdByUserId.
*/
@Column(name = "CREATED_BY_USER_ID", nullable = false, updatable = false)
public String getCreatedByUserId() {
return super.getCreatedByUserId();
}

/**
* @return Returns the createdOnDate.
*/
@Column(name = "CREATED_ON_DT", nullable = false, updatable = false)
public Date getCreatedOnDate() {
return super.getCreatedOnDate();
}

/**
* @return Returns the updatedByUserId.
*/
@Column(name = "UPDATED_BY_USER_ID", nullable = false)
public String getUpdatedByUserId() {
return super.getUpdatedByUserId();
}

/**
* @return Returns the updatedOnDate.
*/
@Column(name = "UPDATED_ON_DT", nullable = false)
public Date getUpdatedOnDate() {
return super.getUpdatedOnDate();
}

public SOAPRecommendation()
{

}

public SOAPRecommendation(SOAPAnalysisRecommendationEnum recommendationEnum)
{
this.code = recommendationEnum.getRecommendationCode();
}

/* (non-Javadoc)
* @see java.lang.Object#toString()
*/
public String toString()
{
return "Recommendation Code : "+this.getCode()+" Description : "+this.getDescription();
}

/* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
public int hashCode()
{
return this.getCode().length() * this.getDescription().length();
}

/* (non-Javadoc)
* @see java.lang.Object#equals(java.lang.Object)
*/
public boolean equals(Object object)
{
if(object instanceof SOAPRecommendation)
{
SOAPRecommendation recommendation = (SOAPRecommendation)object;
if(recommendation.getCode().equals(this.getCode()) && recommendation.getDescription().equals(this.getDescription()))
{
return false;
}else{
return false;
}
}else{
return false;
}
}
}


From DAO Class I am trying save Sample Object with changed recomendation from UI using ..getHibernateTemplate().update(sample) and i tried getHibernateTemplate().saveOrUpdate(sample).

But it is giving error like:

[12/11/10 9:33:11:342 IST] 00000033 SystemOut O <ZingErrorRecord><fqcn>com.honeywell.zing.web.base.ZingExceptionResolver</fqcn><methodName>resolveException</methodName><code>ZING-SAMPLE-401</code><message><![CDATA[Runtime Exception]]></message><stackTrace><![CDATA[com.honeywell.zing.web.base.exception.ZingRuntimeException: ZING-SAMPLE-401
at com.honeywell.zing.web.sample.dao.SampleDAOImpl.updateSample(SampleDAOImpl.java:279)
at com.honeywell.zing.web.telemetry.soap.soapdetails.manager.SoapDetailsManagerImpl.updateSample(SoapDetailsManagerImpl.java:628)
at com.honeywell.zing.web.telemetry.soap.soapdetails.manager.SoapDetailsManagerImpl.saveOrUpdateResults(SoapDetailsManagerImpl.java:604)
at com.honeywell.zing.web.telemetry.soap.soapdetails.controller.SoapResultsController.onSubmit(SoapResultsController.java:134)
at org.springframework.web.servlet.mvc.SimpleFormController.processFormSubmission(SimpleFormController.java:267)
at com.honeywell.zing.web.base.ZingFormController.processFormSubmission(ZingFormController.java:408)
at com.honeywell.zing.web.base.ZingFormController.handlePOSTFlow(ZingFormController.java:251)
at com.honeywell.zing.web.base.ZingFormController.handleRequestInternal(ZingFormController.java:169)
at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:875)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:511)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:989)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:930)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:145)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:39)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:359)
at com.honeywell.zing.web.base.LocaleFilter.doFilterInternal(LocaleFilter.java:73)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:371)
at com.honeywell.zing.web.filter.HTTPContentValidationFilter.doFilterInternal(HTTPContentValidationFilter.java:56)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:371)
at com.honeywell.zing.web.filter.EncodingFilter.doFilterInternal(EncodingFilter.java:45)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:371)
at org.springframework.security.util.FilterChainProxy.doFilter(FilterChainProxy.java:174)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:236)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:761)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:673)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:498)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:464)
at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:90)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:744)
at com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1433)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:111)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:454)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:383)
at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:102)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:195)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:743)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:873)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1469)
Caused by: org.springframework.orm.hibernate3.HibernateSystemException: identifier of an instance of com.honeywell.zing.base.sample.SOAPRecommendation was altered from R to N; nested exception is org.hibernate.HibernateException: identifier of an instance of com.honeywell.zing.base.sample.SOAPRecommendation was altered from R to N
at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:676)
at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:412)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:424)
at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
at org.springframework.orm.hibernate3.HibernateTemplate.flush(HibernateTemplate.java:890)
at com.honeywell.zing.web.sample.dao.SampleDAOImpl.updateSample(SampleDAOImpl.java:275)
... 56 more
Caused by: org.hibernate.HibernateException: identifier of an instance of com.honeywell.zing.base.sample.SOAPRecommendation was altered from R to N
at org.hibernate.event.def.DefaultFlushEntityEventListener.checkId(DefaultFlushEntityEventListener.java:58)
at org.hibernate.event.def.DefaultFlushEntityEventListener.getValues(DefaultFlushEntityEventListener.java:157)
at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:113)
at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:196)
at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:76)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:26)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
at org.springframework.orm.hibernate3.HibernateTemplate$28.doInHibernate(HibernateTemplate.java:892)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:419)
... 59 more
]]></stackTrace><timestamp>12/11/2010 09:33:11</timestamp><threadName>WebContainer : 2</threadName><hostName>IE11LT3B1L5BS</hostName></ZingErrorRecord>
[12/11/10 9:33:11:342 IST]