Seam saying Datamodel saying row is Unavailable... WHY???

[tony.herstell1]

Given:

 @DataModel("displayableCategoryDatamodel")
 private LinkedHashSet<DisplayableCategory> displayableCategorySet;

 @DataModelSelection("displayableCategoryDatamodel")
 private DisplayableCategory selectedDisplayableCategory;

 @DataModel("keywordsDatamodel")
 private LinkedHashSet<Keyword> keywordsSet;

 @DataModelSelection("keywordsDatamodel")
 private Keyword selectedKeyword;



The first time a member is added to keywordsSet and a page is displayed using the Datamodel then I get this:


Caused by: javax.ejb.EJBException: java.lang.IllegalArgumentException: row is unavailable
 at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:69)
 at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83)
 at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:191)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.stateful.StatefulInstanceInterceptor.invoke(StatefulInstanceInterceptor.java:83)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77)
 at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:102)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.stateful.StatefulContainer.localInvoke(StatefulContainer.java:203)
 at org.jboss.ejb3.stateful.StatefulLocalProxy.invoke(StatefulLocalProxy.java:98)
 at $Proxy113.isAdTypeComplete(Unknown Source)
 at sun.reflect.GeneratedMethodAccessor216.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.jboss.seam.util.Reflections.invoke(Reflections.java:20)
 at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31)
 at org.jboss.seam.intercept.ClientSideInterceptor$1.proceed(ClientSideInterceptor.java:72)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:57)
 at org.jboss.seam.interceptors.RemoveInterceptor.aroundInvoke(RemoveInterceptor.java:40)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
 at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:103)
 at org.jboss.seam.intercept.ClientSideInterceptor.invoke(ClientSideInterceptor.java:50)
 at org.javassist.tmp.java.lang.Object_$$_javassist_7.isAdTypeComplete(Object_$$_javassist_7.java)
 ... 51 more




The initial set is created using:

 // Create the default set of Keywords.
 keywordsSet = new LinkedHashSet<Keyword>();



a member is added using


 public void addKeyword() {
 Keyword newKeyword = new Keyword();
 newKeyword.setKeyword(getNewKeyword());
 keywordsSet.add(newKeyword);
 }



Keyword is:

@Entity // Defines this as an Entity that is a class mapped to the Datastore.
@Name("keyword") // Name used within SEAM for an instance of this class.
@Role(name="keywordSearchCriteria", scope=SESSION) // Another named instance of this class (used in the session scope).
public class Keyword implements Serializable {

 private Long id;
 private Integer version; // Hiberante Docs: EJB3 sais Timestamp actually but recommend Integer
 private String keyword;
 private Administration administration;

 public Keyword() {
 }

 @Id
 @GeneratedValue
 public Long getId() {
 return id;
 }

 public void setId(Long id) {
 this.id = id;
 }

 @Version
 @Column(name="version4OptLock")
 public Integer getVersion() {
 return version;
 }

 public void setVersion(Integer version) {
 this.version = version;
 }

 @NotNull(message="required")
 @Length(max = 30)
 public String getKeyword() {
 return keyword;
 }

 public void setKeyword(String keyword) {
 this.keyword = keyword;
 }

 @Embedded
 public Administration getAdministration() {
 return administration;
 }

 public void setAdministration (Administration administration) {
 this.administration = administration;
 }

 @Override
 public String toString() {
 return getKeywordAsText(this);
 }

 public static String getKeywordAsText(Keyword keyword) {
 StringBuffer infoToReturn = new StringBuffer("Keyword");
 infoToReturn.append(" (Id => " + keyword.getId());
 infoToReturn.append(", Version => " + keyword.getVersion());
 infoToReturn.append(", Keyword => " + keyword.getKeyword());
 if (keyword.getAdministration() != null) {
 infoToReturn.append(", Administration --> " + keyword.getAdministration());
 }
 infoToReturn.append(")");
 return infoToReturn.toString();
 }