Hi all,

I am using annotation, below is the error i am getting,

Illegal attempt to map a non collection as a @OneToMany, @ManyToMany or @CollectionOfElements: com.data.items.dao.system.pojo.Menu.menuRoleAccess


This is my Menu POJO:


public class Menu implements java.io.Serializable {


/**
*
*/
private static final long serialVersionUID = 1L;
// Fields

private Integer serial;
private String description;
private Integer parent;
private String action;
private String label;
private String status;
private Date dateCreated;
private Integer sequence;
private String actionListerner;
private String target;
private Set<MenuRoleAccess> menuRoleAccesses = new HashSet(0);
private MenuRoleAccess menuRoleAccess;


// Constructors

/** default constructor */
public Menu() {
}

/** minimal constructor */
public Menu(Integer serial, Integer parent, String status, Integer sequence) {
this.serial = serial;
this.parent = parent;
this.status = status;
this.sequence = sequence;
}

/** full constructor */
public Menu(Integer serial, String description, Integer parent, String action, String label,
String status, Date dateCreated, Integer sequence, String actionListerner, String target,Set menuRoleAccesses) {
this.serial = serial;
this.description = description;
this.parent = parent;
this.action = action;
this.label = label;
this.status = status;
this.dateCreated = dateCreated;
this.sequence = sequence;
this.actionListerner = actionListerner;
this.target = target;
this.menuRoleAccesses = menuRoleAccesses;
}


// Property accessors

@Id
@GeneratedValue(strategy=GenerationType.TABLE)
@Column(name="SERIAL")
public Integer getSerial() {
return this.serial;
}

public void setSerial(Integer serial) {
this.serial = serial;
}
@Column(name="DESCRIPTION", nullable=true)
public String getDescription() {
return this.description;
}

public void setDescription(String description) {
this.description = description;
}
@Column(name="PARENT", nullable=false)
public Integer getParent() {
return this.parent;
}

public void setParent(Integer parent) {
this.parent = parent;
}
@Column(name="ACTION", nullable=true)
public String getAction() {
return this.action;
}

public void setAction(String action) {
this.action = action;
}
@Column(name="LABEL", nullable=true)
public String getLabel() {
return this.label;
}

public void setLabel(String label) {
this.label = label;
}
@Column(name="STATUS", nullable=false)
public String getStatus() {
return this.status;
}

public void setStatus(String status) {
this.status = status;
}
@Column(name="DATE_CREATED", nullable=true)
public Date getDateCreated() {
return this.dateCreated;
}

public void setDateCreated(Date dateCreated) {
this.dateCreated = dateCreated;
}
@Column(name="SEQUENCE", nullable=false)
public Integer getSequence() {
return this.sequence;
}

public void setSequence(Integer sequence) {
this.sequence = sequence;
}
@Column(name="ACTION_LISTERNER", nullable=false)
public String getActionListerner() {
return this.actionListerner;
}

public void setActionListerner(String actionListerner) {
this.actionListerner = actionListerner;
}
@Column(name="TARGET", nullable=false)
public String getTarget() {
return this.target;
}

public void setTarget(String target) {
this.target = target;
}

@OneToMany(cascade = {CascadeType.ALL},fetch = FetchType.EAGER, mappedBy="Menu")
public Set getMenuRoleAccesses() {
return this.menuRoleAccesses;
}

public void setMenuRoleAccesses(Set menuRoleAccesses) {
this.menuRoleAccesses = menuRoleAccesses;
}

@OneToMany(cascade = {CascadeType.ALL},fetch = FetchType.EAGER, mappedBy="Menu")
public MenuRoleAccess getMenuRoleAccess(){
//log.debug("getLogin..."+menuRoleAccesses.size());
Iterator<MenuRoleAccess> it = menuRoleAccesses.iterator();
while (it.hasNext()) {
menuRoleAccess = (MenuRoleAccess) it.next();
}
return menuRoleAccess;
}


This is my MenuRoleAccess POJO:


public class MenuRoleAccess implements java.io.Serializable {

/**
*
*/
private static final long serialVersionUID = 1L;
// Fields

private int serial;
private Menu menu;
private UserRole userRole;
private int status;


// Constructors

/** default constructor */
public MenuRoleAccess() {
}


/** full constructor */
public MenuRoleAccess(int serial, Menu menu, UserRole userRole, int status) {
this.serial = serial;
this.menu = menu;
this.userRole = userRole;
this.status = status;
}


// Property accessors
@Id
@GeneratedValue(strategy=GenerationType.TABLE)
@Column(name="SERIAL")
public int getSerial() {
return this.serial;
}

public void setSerial(int serial) {
this.serial = serial;
}

@ManyToOne
@JoinColumn(name="SERIAL", nullable=false)
public Menu getMenu() {
return this.menu;
}

public void setMenu(Menu menu) {
this.menu = menu;
}

@ManyToOne
@JoinColumn(name="USER_ROLE_ID",nullable = false,updatable = false,insertable = false)
public UserRole getUserRole() {
return this.userRole;
}

public void setUserRole(UserRole userRole) {
this.userRole = userRole;
}
@Column(name="STATUS", nullable=true)
public int getStatus() {
return this.status;
}

public void setStatus(int status) {
this.status = status;
}

}

My question is how to create the relationship of one to many here.
One Menu have different menuroleaccess.How to specifiy the relation apart from Collection in Annotations???Thank you.