Can someone tell me why this code throws NotSerializableException:
package com.gint.scm.ejb.entity;
|
| import java.io.Serializable;
| import java.util.Collection;
|
| import javax.ejb.Local;
| import javax.persistence.Column;
| import javax.persistence.Entity;
| import javax.persistence.GeneratorType;
| import javax.persistence.Id;
| import javax.persistence.OneToMany;
| import javax.persistence.Table;
|
| @SuppressWarnings("serial")
| @Entity
| @Local
| @Table(name = "application")
| public class Application implements Serializable{
| private long id;
|
| private String name;
|
| private Collection<Version> versions;
|
| public Application() {
| }
|
| public Application(String name) {
| this.name = name;
| }
|
| @Id(generate=GeneratorType.AUTO)
| public long getId() {
| return id;
| }
|
| public void setId(long id) {
| this.id = id;
| }
|
| @Column(name="name")
| public String getName() {
| return name;
| }
|
| public void setName(String name) {
| this.name = name;
| }
|
| @OneToMany
| public Collection<Version> getVersions() {
| return versions;
| }
|
| public void setVersions(Collection<Version> versions) {
| this.versions = versions;
| }
| }
|
package com.gint.scm.ejb.entity;
|
| import javax.ejb.Local;
| import javax.persistence.AttributeOverride;
| import javax.persistence.AttributeOverrides;
| import javax.persistence.Column;
| import javax.persistence.EmbeddedId;
| import javax.persistence.Entity;
| import javax.persistence.JoinColumn;
| import javax.persistence.ManyToOne;
| import javax.persistence.Table;
|
| @SuppressWarnings("serial")
| @Entity
| @Local
| @Table(name = "version")
| public class Version {
|
| String versionMark;
|
| Application application;
|
| VersionPK versionPK;
|
| @EmbeddedId
| @AttributeOverrides({
| @AttributeOverride(name="versionMark",column =
@Column(name="versionMark")),
| @AttributeOverride(name="applicationId",column =
@Column(name="applicationId"))
| })
| public VersionPK getVersionPK() {
| return versionPK;
| }
|
| public void setVersionPK(VersionPK versionPK) {
| this.versionPK = versionPK;
| }
|
| @ManyToOne
| @JoinColumn(name="applicationId",insertable=false,updatable=false)
| public Application getApplication() {
| return application;
| }
|
| public void setApplication(Application application){
| this.application = application;
| }
| }
package com.gint.scm.ejb.entity;
|
| import java.io.Serializable;
|
| @SuppressWarnings("serial")
| public class VersionPK implements Serializable {
|
| private String versionMark;
|
| private long applicationId;
|
| public VersionPK() {
| }
|
| public VersionPK(String versionMark, long applicationId) {
| this.versionMark = versionMark;
| this.applicationId = applicationId;
| }
|
| public long getApplicationId() {
| return applicationId;
| }
|
| public void setApplicationId(long applicationId) {
| this.applicationId = applicationId;
| }
|
| public String getVersionMark() {
| return versionMark;
| }
|
| public void setVersionMark(String versionMark) {
| this.versionMark = versionMark;
| }
|
| public int hashCode() {
| return (int) versionMark.hashCode()
| + (int) (new Long(applicationId)).hashCode();
| }
|
| public boolean equals(Object obj) {
| if (obj == this)
| return true;
| if (!(obj instanceof VersionPK))
| return false;
| if (obj == null)
| return false;
| VersionPK pk = (VersionPK) obj;
| return pk.versionMark.equals(versionMark)
| && pk.applicationId == applicationId;
| }
|
| }
|
Creating works fine for both entities, find (by primary key) works also. The
problem is if I perform find for Version entity and try to pass it to remote
client.
NotSerializableException for Version entity.
I must say that everything works fine within container - find returns Version
entity to the stateless session bean that is used as the facade. Exception is
trown if Version entity is passed to the remote client from the facade.
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