Hi,
As said in the message StreamingQueryResult (the result of your query)
doesn't itself implement the the Serializable interface that you have
for your own classes.
What you should do: defining your own class based on any Collection
your prefer (List, Vector, Map, etc.), make it implement Serializable
as you did for your other classes.
Then when you get a QueryResult, you loop into it to extract your own
object, put them in an instance of your collection class above and
ship it to client. That should work.
Anyway, it's better not to send instances of typical server side
objects like StreamingQueryResult to the client side.
regards
didier
On Mar 3, 10:36 am, andy andy.anand1...@gmail.com wrote:
My code here:
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 ListLeave 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;
}
EmployeeManager:
@PersistenceCapable
@EmbeddedOnly
public class EmployeeManager implements Serializable {
private static final long serialVersionUID = 1L;
@Persistent
public String managerId;
}
when i covert the result into String and then send to client then it is
accepting but when i am sending object it giving me error like:
Type 'org.datanucleus.store.appengine.query.StreamingQueryResult' was not
included in the set of types which can be serialized by this
SerializationPolicy or its Class object could not be loaded. For security
purposes, this type will not be serialized.: instance =
[parentemp.client.Employee@1988799, parentemp.client.Employee@ee738e,
parentemp.client.Employee@e48ee2]
What should i do...???
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