I am writing an algorithm that will go thru all available Mongo databases in java.
On the windows shell I just do
show dbs
How can I do that in java and get back a list of all the available databases?
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Are you using the standard driver ?Denys Séguret– Denys Séguret2013-03-14 17:49:33 +00:00Commented Mar 14, 2013 at 17:49
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Yes i am using the standard one.Max Doumit– Max Doumit2013-03-14 17:50:14 +00:00Commented Mar 14, 2013 at 17:50
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2 Answers
You would do this like so:
MongoClient mongoClient = new MongoClient();
List<String> dbs = mongoClient.getDatabaseNames();
That will simply give you a list of all of the database names available.
You can see the documentation here.
Update:
As @CydrickT mentioned below, getDatabaseNames is already deprecated, so we need switch to:
MongoClient mongoClient = new MongoClient();
MongoCursor<String> dbsCursor = mongoClient.listDatabaseNames().iterator();
while(dbsCursor.hasNext()) {
System.out.println(dbsCursor.next());
}
1 Comment
Max Doumit
How did i miss that ! Yea that did the trick ! thank you loads !
For anyone who comes here because the method getDatabaseNames(); is deprecated / not available, here is the new way to get this information:
MongoClient mongoClient = new MongoClient();
MongoCursor<String> dbsCursor = mongoClient.listDatabaseNames().iterator();
while(dbsCursor.hasNext()) {
System.out.println(dbsCursor.next());
}
Here is a method that returns the list of database names like the previous getDatabaseNames() method:
public List<String> getDatabaseNames(){
MongoClient mongoClient = new MongoClient(); //Maybe replace it with an already existing client
List<String> dbs = new ArrayList<String>();
MongoCursor<String> dbsCursor = mongoClient.listDatabaseNames().iterator();
while(dbsCursor.hasNext()) {
dbs.add(dbsCursor.next());
}
return dbs;
}
1 Comment
Vlad
This is true,thanks so much for the answer ,this should be the correct answer so there will be no confusion.Cheers,best of luck.