File: geoa.js

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mongodb 1%3A2.4.10-5
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t = db.geoa
t.drop();

t.save( { _id : 1 , a : { loc : [ 5 , 5 ] } } )
t.save( { _id : 2 , a : { loc : [ 6 , 6 ] } } )
t.save( { _id : 3 , a : { loc : [ 7 , 7 ] } } )

t.ensureIndex( { "a.loc" : "2d" } );

cur = t.find( { "a.loc" : { $near : [ 6 , 6 ] } } );
assert.eq( 2 , cur.next()._id , "A1" );