On Wed, Apr 18, 2012 at 6:33 PM, Bilal Clarance <bclara...@gmail.com> wrote:
> Hi,

> I am working on a project in which I am persisting legacy documents using
> MongoDB. My problem is that the entity that I am stored has a property of
> type AtomicInteger. When retrieving an entity from mongo I get this
> exception:

> Unable to convert value "0" from type 'java.lang.Integer' to type
> 'java.util.concurrent.atomic.AtomicInteger'; nested exception is
> java.lang.IllegalArgumentException: Could not convert number [0] of type
> [java.lang.Integer] to unknown target class
> [java.util.concurrent.atomic.AtomicInteger]

> Of course you cannot cast AtomicInteger to Integer, so I added a setter to
> the entity as follows:

>     public void setErrorCount(Integer errorCount) {
>         this.errorCount.set(errorCount);
>     }

> This did not solve the issue. I have spent quite a bit of time on google
> without luck. If anyone has some ideas I would be grateful.

> Thanks
> Bilal

> --
> You received this message because you are subscribed to the Google Groups
> "mongodb-user" group.
> To view this discussion on the web visit
> https://groups.google.com/d/msg/mongodb-user/-/uTCe-7ZXsSMJ.
> To post to this group, send email to mongodb-user@googlegroups.com.
> To unsubscribe from this group, send email to
> mongodb-user+unsubscribe@googlegroups.com.
> For more options, visit this group at
> http://groups.google.com/group/mongodb-user?hl=en.

> You can add a hook to convert AtomicInteger to Integer
> See:http://api.mongodb.org/java/current/org/bson/BSON.html#addEncodingHoo...,
> org.bson.Transformer)

> On Wed, Apr 18, 2012 at 6:33 PM, Bilal Clarance <bclara...@gmail.com> wrote:
> > Hi,

> > I am working on a project in which I am persisting legacy documents using
> > MongoDB. My problem is that the entity that I am stored has a property of
> > type AtomicInteger. When retrieving an entity from mongo I get this
> > exception:

> > Unable to convert value "0" from type 'java.lang.Integer' to type
> > 'java.util.concurrent.atomic.AtomicInteger'; nested exception is
> > java.lang.IllegalArgumentException: Could not convert number [0] of type
> > [java.lang.Integer] to unknown target class
> > [java.util.concurrent.atomic.AtomicInteger]

> > Of course you cannot cast AtomicInteger to Integer, so I added a setter to
> > the entity as follows:

> >     public void setErrorCount(Integer errorCount) {
> >         this.errorCount.set(errorCount);
> >     }

> > This did not solve the issue. I have spent quite a bit of time on google
> > without luck. If anyone has some ideas I would be grateful.

> > Thanks
> > Bilal

> > --
> > You received this message because you are subscribed to the Google Groups
> > "mongodb-user" group.
> > To view this discussion on the web visit
> >https://groups.google.com/d/msg/mongodb-user/-/uTCe-7ZXsSMJ.
> > To post to this group, send email to mongodb-user@googlegroups.com.
> > To unsubscribe from this group, send email to
> > mongodb-user+unsubscribe@googlegroups.com.
> > For more options, visit this group at
> >http://groups.google.com/group/mongodb-user?hl=en.

}

}
}

> I have a similar issue except I'm using arrays of Atomic Integers.
> They are fine writing to the DB and they save as Int32.
> However, when I try the solution you suggest I get the following error:

> com.mongodb.BasicDBList cannot be cast to
> [[Ljava.util.concurrent.atomic.AtomicInteger;
> java.lang.ClassCastException: com.mongodb.BasicDBList cannot be cast to
> [[Ljava.util.concurrent.atomic.AtomicInteger;

> Any ideas on how to overcome this?

> Thanks

> Sample code:

> BSON.addDecodingHook(Integer.class, new Transformer());

> AtomicInteger[][] array = (AtomicInteger[][]) dbReturn.get(arrayName);

> class Transformer implements org.bson.Transformer {

> public Object transform(Object object) {

> if (object instanceof Integer) {
> Integer integer = (Integer) object;
> return new AtomicInteger(integer);

> }

> return object;

> }
> }

On Friday, 18 May 2012 08:13:08 UTC+1, Bryan wrote:

> The driver deserializes BSON arrays as Lists which can't be cast as a
> multi-dimensional array. You'll need to iterate over the List to
> populate the array.

> On May 17, 12:38 pm, schaffer <stephen.gog...@gmail.com> wrote:
> > I have a similar issue except I'm using arrays of Atomic Integers.
> > They are fine writing to the DB and they save as Int32.
> > However, when I try the solution you suggest I get the following error:

> > com.mongodb.BasicDBList cannot be cast to
> > [[Ljava.util.concurrent.atomic.AtomicInteger;
> > java.lang.ClassCastException: com.mongodb.BasicDBList cannot be cast to
> > [[Ljava.util.concurrent.atomic.AtomicInteger;

> > Any ideas on how to overcome this?

> > Thanks

> > Sample code:

> > BSON.addDecodingHook(Integer.class, new Transformer());

> > AtomicInteger[][] array = (AtomicInteger[][]) dbReturn.get(arrayName);

> > class Transformer implements org.bson.Transformer {

> > public Object transform(Object object) {

> > if (object instanceof Integer) {
> > Integer integer = (Integer) object;
> > return new AtomicInteger(integer);

> > }

> > return object;

> > }
> > }

> Thank you for your answer and I led me to get a some code that would
> do the job.
>            BSON.addDecodingHook(Integer.class, new Transformer() {
>                 @Override
>                 public Object transform(Object object) {
>                     if(object instanceof Integer) {
>                         Integer integer = (Integer) object;
>                         return new AtomicInteger(integer);
>                     }
>                     return object;
>                 }
>             });

> I do have a problem with this though. My entity that I am getting has
> other properties that are in fact Integer types so when it pulls those
> values out it convert those as well. Could you guide me to somewhere
> where I could figure out how to convert based on a specific property
> name or based on what type the property of the Entity/Object that I
> want to deserialize to from the document;

> On Apr 18, 10:04 pm, Eliot Horowitz <el...@10gen.com> wrote:

> > You can add a hook to convert AtomicInteger to Integer
> > See:http://api.mongodb.org/java/current/org/bson/BSON.html#addEncodingHoo...,
> > org.bson.Transformer)

> > On Wed, Apr 18, 2012 at 6:33 PM, Bilal Clarance <bclara...@gmail.com> wrote:
> > > Hi,

> > > I am working on a project in which I am persisting legacy documents using
> > > MongoDB. My problem is that the entity that I am stored has a property of
> > > type AtomicInteger. When retrieving an entity from mongo I get this
> > > exception:

> > > Unable to convert value "0" from type 'java.lang.Integer' to type
> > > 'java.util.concurrent.atomic.AtomicInteger'; nested exception is
> > > java.lang.IllegalArgumentException: Could not convert number [0] of type
> > > [java.lang.Integer] to unknown target class
> > > [java.util.concurrent.atomic.AtomicInteger]

> > > Of course you cannot cast AtomicInteger to Integer, so I added a setter to
> > > the entity as follows:

> > >     public void setErrorCount(Integer errorCount) {
> > >         this.errorCount.set(errorCount);
> > >     }

> > > This did not solve the issue. I have spent quite a bit of time on google
> > > without luck. If anyone has some ideas I would be grateful.

> > > Thanks
> > > Bilal

> > > --
> > > You received this message because you are subscribed to the Google Groups
> > > "mongodb-user" group.
> > > To view this discussion on the web visit
> > >https://groups.google.com/d/msg/mongodb-user/-/uTCe-7ZXsSMJ.
> > > To post to this group, send email to mongodb-user@googlegroups.com.
> > > To unsubscribe from this group, send email to
> > > mongodb-user+unsubscribe@googlegroups.com.
> > > For more options, visit this group at
> > >http://groups.google.com/group/mongodb-user?hl=en.