Error by persisting entity beans with n:m relationship
I get the following error by persisting an entity bean:
11:56:08,316 FATAL [application] javax.persistence.PersistenceException: org.hibernate.PersistentObjectException: detached entity passed to persist: org.domain.ConfigBaukasten.entity.ParamInstance
my bean entities are:
- Configuration.java
@Entity
@Name("configuration")
public class Configuration implements Serializable {
//seam-gen attributes (you should probably edit these)
private Long id;
private Integer version;
private String name;
private List<ParamInstance> params = new ArrayList<ParamInstance>();
@Id @GeneratedValue
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
@Version
public Integer getVersion() {
return version;
}
private void setVersion(Integer version) {
this.version = version;
}
@Length(max=20)
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@OneToMany(mappedBy="configuration", cascade=CascadeType.ALL)
public List<ParamInstance> getParams() {
return params;
}
public void setParams(List<ParamInstance> params) {
this.params = params;
}
}- ParamInstance.java
@Entity
public class ParamInstance implements Serializable {
//seam-gen attributes (you should probably edit these)
private Long id;
private Integer version;
private String name;
private Parameter parameter;
private int value;
private Date validFrom;
private Date validUntil;
private Configuration configuration;
@Id @GeneratedValue
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
@Version
public Integer getVersion() {
return version;
}
private void setVersion(Integer version) {
this.version = version;
}
@Length(max=20)
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@OneToOne(fetch=FetchType.LAZY, optional=false)
@JoinColumn(name = "parameter_id")
public Parameter getParameter() {
return parameter;
}
public void setParameter(Parameter parameter) {
this.parameter = parameter;
}
public int getValue() {
return value;
}
public void setValue(int value) {
this.value = value;
}
public Date getValidFrom() {
return validFrom;
}
public void setValidFrom(Date validFrom) {
this.validFrom = validFrom;
}
public Date getValidUntil() {
return validUntil;
}
public void setValidUntil(Date validUntil) {
this.validUntil = validUntil;
}
@ManyToOne(cascade=CascadeType.ALL)
@JoinColumn(name="configuration")
public Configuration getConfiguration() {
return configuration;
}
public void setConfiguration(Configuration configuration) {
this.configuration = configuration;
}
}and session bean is:
@Stateful
@Name("ParamAction")
public class ParamActionBean implements ParamAction {
@Logger private Log log;
@PersistenceContext(type = EXTENDED)
private EntityManager em;
//@In
// private Configuration configuration;
@Out (required=false)
private List<SelectItem> parameters = null;
@Out (required=false)
private List<SelectItem> paramInsts = null;
@Factory("parameters")
public void findParameters() {
parameters = new ArrayList<SelectItem>();
Map<String, Parameter> allParamsMapped = new HashMap<String,Parameter>();
Parameter param;
for(Iterator<Parameter> it = ((List<Parameter>)em.createQuery("select p from Parameter p").getResultList()).iterator(); it.hasNext();){
SelectItem item = new SelectItem();
param = (Parameter)it.next();
item.setValue( param);
item.setLabel((param.getId()).toString());
parameters.add( item );
allParamsMapped.put(param.getName(), param);
}
Contexts.getConversationContext().set("allParametersMapped", allParamsMapped);
}
@Factory("paramInsts")
public void findParamInstances(){
paramInsts = new ArrayList<SelectItem>();
ParamInstance paramInst;
Map<String, ParamInstance> allParamInstsMapped = new HashMap<String,ParamInstance>();
for(Iterator<ParamInstance> it = ((List<ParamInstance>)em.createQuery("select pi from ParamInstance pi").getResultList()).iterator(); it.hasNext();){
SelectItem item = new SelectItem();
paramInst = (ParamInstance)it.next();
item.setValue(paramInst);
item.setLabel(paramInst.getName());
paramInsts.add(item);
allParamInstsMapped.put(paramInst.getName(), paramInst);
}
Contexts.getConversationContext().set("allParamInstsMapped", allParamInstsMapped);
}
/* public String save(){
em.merge(configuration);
return "";
}*/
public List<SelectItem> getParameters() {
return parameters;
}
public void setParameters(List<SelectItem> parameters) {
this.parameters = parameters;
}
@Remove
@Destroy
public void destroy() {}
}The xhtml is:
<ui:define name="body">
<h:messages globalOnly="true" styleClass="message"/>
<h:form id="configurationForm">
<rich:panel>
<f:facet name="header">configuration</f:facet>
<s:decorate id="nameDecoration" template="layout/edit.xhtml">
<ui:define name="label">Name</ui:define>
<h:inputText id="name" required="true"
value="#{configurationHome.instance.name}"/>
</s:decorate>
<s:decorate id="ParamInstsDecoration" template="layout/edit.xhtml">
<ui:define name="label">Parameter Instances</ui:define>
<h:selectManyMenu value="#{configurationHome.instance.params}" converter="ParamInstConverter">
<f:selectItems value="#{paramInsts}" />
</h:selectManyMenu>
</s:decorate>
<div style="clear:both"/>
</rich:panel>
<div class="actionButtons">
<h:commandButton id="save"
value="Save"
action="#{configurationHome.persist}"
rendered="#{!configurationHome.managed}"/>
<h:commandButton id="update"
value="Save"
action="#{configurationHome.update}"
rendered="#{configurationHome.managed}"/>
<h:commandButton id="delete"
value="Delete"
action="#{configurationHome.remove}"
rendered="#{configurationHome.managed}"/>
<s:button propagation="end"
id="done"
value="Done"
view="/configurationList.xhtml"/>
</div>
</h:form>
</ui:define>
any idea?