I've written a project with the plain mongodb java driver. Not too bad
IMO. I don't think there's a need to use spring-data-mongodb.
The code is currently closed, but I aim to open up some things in the
new year. In the mean time, here's my MongoRequestCycleListener:
import org.apache.wicket.request.cycle.AbstractRequestCycleListener;
import org.apache.wicket.request.cycle.RequestCycle;
import com.mongodb.DB;
public class MongoRequestCycleListener extends AbstractRequestCycleListener
implements MongoProvider {
private static final ThreadLocal<DB> db = new ThreadLocal<DB>();
private final MongoProvider provider;
public MongoRequestCycleListener(MongoProvider provider) {
this.provider = provider;
}
@Override
public DB getDB() {
DB db = MongoRequestCycleListener.db.get();
assert db != null;
return db;
}
@Override
public void onBeginRequest(RequestCycle cycle) {
DB threadLocalDB = provider.getDB();
threadLocalDB.requestStart();
db.set(threadLocalDB);
}
@Override
public void onEndRequest(RequestCycle cycle) {
DB db2 = db.get();
if (db2 != null) {
db2.requestDone();
db.remove();
}
}
}
and the MongoProvider interface:
import com.mongodb.DB;
public interface MongoProvider {
public DB getDB();
}
Now all you need to do is inject a mongo provider into your services
and you can get the DB. For example:
public List<User> byName(String name) {
DBCollection users = provider.getDB().getCollection("Users");
DBObject result = users.find(new BasicDBObject("name", name));
// ... convert result in list of users.
return convertedList;
}
In onBeginRequest() I start a 'mongo transaction' and in onEndRequest
I close that transaction. It is not a transaction in the common SQL
world sense, but should suffice.
Martijn
On Mon, Dec 12, 2011 at 6:18 AM, Jeff Schneller <[email protected]> wrote:
> Has anyone implemented wicket with spring and mongodb. I saw there was a
> project back in June about scala, wicket, spring, and mongodb but the scala
> portion is a bit confusing.
>
> Looking for a sample implementation/configuration to get going with.
>
> Thanks.
>
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