Im completely new to MongoDb and Morphia and
trying to learn how to update my document.
I cannot see/understand how to do it from this page:
http://www.mongodb.org
My Document looks as following:(could be some error here)
@Entity
public class UserData {
private Date creationDate;
private Date lastUpdateDate;
@Id private ObjectId id;
public String status= "";
public String uUid= "";
public UserData() {
super();
this.statistic = new Statistic();
this.friendList = new FriendList();
}
@Embedded
private Statistic statistic;
@Embedded
private FriendList friendList;
@PrePersist
public void prePersist() {
this.creationDate = (creationDate == null) ? new Date() : creationDate;
this.lastUpdateDate = (lastUpdateDate == null) ? creationDate : new Date();
}
}
On that page i cannot see any place where they describe howto update my UserData
that has a specific uUid
Like update UserData.status
if uUid=123567
This is what i think i should use:
ops=datastore.createUpdateOperations(UserData.class).update("uUid").if uuid=foo..something more here..
// morphia default update is to update all the UserData document so howto update selected ones
datastore.update(datastore.createQuery(UserData.class), ops);
I guess this is what you want:
query = ds.createQuery(UserData.class).field("uUid").equal("1234");
ops = ds.createUpdateOperations(UserData.class).set("status", "active");
ds.update(query, ops);