Help with near(can't find special index: 2d for: { geoLoc: { $near: [ 40.75412, -72.98157000000001 ] } })

[FabioEbner]

Can, someone help me?? i'm trying to use .near  but i always get this error:

can't find special index: 2d for: { geoLoc: { $near: [ 40.75412, -72.98157000000001 ] } }

i start the mongo with MongoDir\bin\mongod --dbpath dbDir 

i use this method to add the citys:

public void addVarias() throws Exception{

City c1 = new City("teste1'", new double[] {40.724220,-73.961470});

City c2 = new City("teste2'", new double[] {40.734220,-73.971470});

City c3 = new City("teste3'", new double[] {40.754220,-73.981470});

City c4 = new City("teste4'", new double[] {40.754220,-72.981470});

City c5 = new City("teste5'", new double[] {41.754220,-72.981470});

ds = ConexaoDao.getInstance().getDatastore();

ds.save(c1);

ds.save(c2);

ds.save(c3);

ds.save(c4);

ds.save(c5);

ds.ensureIndexes();

}

And this to get

ds = ConexaoDao.getInstance().getDatastore();

List<City> cityList = ds.find(City.class).field("geoLoc").near(40.754120,-72.981570, 100/111.12).asList();

and this is my City Object:

@Entity("city")

public class City {

@Id

private ObjectId cdCity;

private String nmCity;

private double[] geoLoc;

public City() {

// TODO Auto-generated constructor stub

}

public City(String nmCity, double[] geoLoc) {

this.nmCity = nmCity;

this.geoLoc = geoLoc;

}

//gets and setters

}

[Nat]

try declaring @Indexed annotation as follows:

@Entity("city")

public class City {

@Id

private ObjectId cdCity;

private String nmCity;

@Indexed(IndexDirection.GEO2D)

private double[] geoLoc;

public City() {

// TODO Auto-generated constructor stub

}

public City(String nmCity, double[] geoLoc) {

this.nmCity = nmCity;

this.geoLoc = geoLoc;

}

//gets and setters

}

[Fabio Ebner]

Nice.. this work..

tks

2012/5/5 Nat <nat....@gmail.com>

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[Fabio Ebner]

everytime i save one object i need to call ensureindex? i can put on auto? :D

2012/5/5 Nat <nat....@gmail.com>

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[Nat Luengnaruemitchai]

Nope. Just once is enough. You can do it during the program initialization.

[Fabio Ebner]

Só, i only need run just after connect? But if i save some object, he will make the index auto?

Enviado do celular

[Sam Millman]

Yes

[Fabio Ebner]

Hey man, takes a doub my please, i create my Object with ObjectId, i have some Id that refer this data?? just like in SGDB, to not travel all the object only one pointer

tks

2012/5/6 Sam Millman <sam.m...@gmail.com>