Examples of com.mongodb.GroupCommand

com.mongodb.GroupCommand
This class groups the argument for a group operation and can build the underlying command object @dochub mapreduce

     * @see <a
     *      href="http://www.mongodb.org/display/DOCS/Aggregation">http://www.mongodb.org/display/DOCS/Aggregation</a>
     */
    public DBObject group(DBObject key, DBObject cond, DBObject initial,
            String reduce, String finalize) throws MongoException {
        GroupCommand cmd = new GroupCommand(dbCollection, key, cond, initial,
                reduce, finalize);
        return group(cmd);
    }

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        DBObject keys = ((DocBuilderField) getBoundUnit(Item.grpKeys)).getDBObject();
        DBObject initial = ((DocBuilderField) getBoundUnit(Item.grpInitialValue)).getDBObject();
        DBObject query = ((DocBuilderField) getBoundUnit(Item.grpQuery)).getDBObject();
        String reduce = getStringFieldValue(Item.grpReduce);
        String finalize = getStringFieldValue(Item.grpFinalize);
        final GroupCommand cmd = new GroupCommand(col, keys, query, initial, reduce, finalize);
//        new DocView(null, "Group", col.getDB(), cmd.toDBObject()).addToTabbedDiv();


        new DbJobCmd(col.getDB(), cmd.toDBObject(), null, button).addJob();
    }

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      DBCollection coll = db.getCollection(collName);
      DBObject dbq = moe.formatObject(q);


      String reduce = "function(obj,prev){prev.csum+=obj." + fieldName + ";}";


      GroupCommand gcmd = new GroupCommand(  coll,
                          Mongos.dbo(),
                          dbq,
                          Mongos.dbo("csum", 0),
                          reduce,
                          null);

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Related Classes of com.mongodb.GroupCommand

com.edgytech.umongo.CollectionPanel

org.mongojack.JacksonDBCollection

org.nutz.mongo.MongoDao

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