[google-appengine] wants to pass the object to client side

[andy]

I want to pass the object the of employee to client side can it
possible? i am getting some error.
here is my code

Employee Class:
@PersistenceCapable(identityType =
IdentityType.APPLICATION,detachable="true")
public class Employee implements Serializable {
        private static final long serialVersionUID = 1L;

        @PrimaryKey
        @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
        @Extension(vendorName="datanucleus", key="gae.encoded-pk",
        value="true")
        private String id;
        @Persistent
        private String ename;

        @Persistent
        private String designation;

        @Persistent(mappedBy="parentEmployee",defaultFetchGroup="true")
        private List<Leave> leaves;

        @Persistent
        @Embedded
        private EmployeeManager employeeManager;
}
Leave class:
@PersistenceCapable(identityType =
IdentityType.APPLICATION,detachable="true")
public class Leave implements Serializable{

        private static final long serialVersionUID = 1L;

        @PrimaryKey
        @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
        @Extension(vendorName="datanucleus", key="gae.encoded-pk",
        value="true")
        private String leaveid;

        @Persistent
        private String reason;

        @Persistent
        private String status;

        //@OneToMany(fetch=FetchType.EAGER)
        public Employee parentEmployee;
}
but i m=am getting the all information at server side

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