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// Tests distinct with geospatial field values.
// 1. Test distinct with geo values for 'key' (SERVER-2135)
// 2. Test distinct with geo predicates for 'query' (SERVER-13769)
var coll = db.geo_distinct;
var res;
//
// 1. Test distinct with geo values for 'key'.
//
coll.drop();
coll.insert({loc: {type: 'Point', coordinates: [10, 20]}});
coll.insert({loc: {type: 'Point', coordinates: [10, 20]}});
coll.insert({loc: {type: 'Point', coordinates: [20, 30]}});
coll.insert({loc: {type: 'Point', coordinates: [20, 30]}});
assert.eq(4, coll.count());
// Test distinct on GeoJSON points with/without a 2dsphere index.
res = coll.runCommand('distinct', {key: 'loc'});
assert.commandWorked(res);
assert.eq(res.values.sort(),
[{type: 'Point', coordinates: [10, 20]}, {type: 'Point', coordinates: [20, 30]}]);
assert.commandWorked(coll.ensureIndex({loc: '2dsphere'}));
res = coll.runCommand('distinct', {key: 'loc'});
assert.commandWorked(res);
assert.eq(res.values.sort(),
[{type: 'Point', coordinates: [10, 20]}, {type: 'Point', coordinates: [20, 30]}]);
// Test distinct on legacy points with/without a 2d index.
// (Note that distinct on a 2d-indexed field doesn't produce a list of coordinate pairs, since
// distinct logically operates on unique values in an array. Hence, the results are unintuitive and
// not semantically meaningful.)
coll.dropIndexes();
res = coll.runCommand('distinct', {key: 'loc.coordinates'});
assert.commandWorked(res);
assert.eq(res.values.sort(), [10, 20, 30]);
assert.commandWorked(coll.ensureIndex({'loc.coordinates': '2d'}));
res = coll.runCommand('distinct', {key: 'loc.coordinates'});
assert.commandWorked(res);
assert.eq(res.values.sort(), [10, 20, 30]);
//
// 2. Test distinct with geo predicates for 'query'.
//
coll.drop();
for (var i = 0; i < 50; ++i) {
coll.insert({zone: 1, loc: {type: 'Point', coordinates: [-20, -20]}});
coll.insert({zone: 2, loc: {type: 'Point', coordinates: [-10, -10]}});
coll.insert({zone: 3, loc: {type: 'Point', coordinates: [0, 0]}});
coll.insert({zone: 4, loc: {type: 'Point', coordinates: [10, 10]}});
coll.insert({zone: 5, loc: {type: 'Point', coordinates: [20, 20]}});
}
var originGeoJSON = {
type: 'Point',
coordinates: [0, 0]
};
// Test distinct with $nearSphere query predicate.
// A. Unindexed key, no geo index on query predicate.
res = coll.runCommand(
'distinct',
{key: 'zone', query: {loc: {$nearSphere: {$geometry: originGeoJSON, $maxDistance: 1}}}});
assert.commandFailed(res);
// B. Unindexed key, with 2dsphere index on query predicate.
assert.commandWorked(coll.ensureIndex({loc: '2dsphere'}));
res = coll.runCommand(
'distinct',
{key: 'zone', query: {loc: {$nearSphere: {$geometry: originGeoJSON, $maxDistance: 1}}}});
assert.commandWorked(res);
assert.eq(res.values.sort(), [3]);
// C. Indexed key, with 2dsphere index on query predicate.
assert.commandWorked(coll.ensureIndex({zone: 1}));
res = coll.runCommand(
'distinct',
{key: 'zone', query: {loc: {$nearSphere: {$geometry: originGeoJSON, $maxDistance: 1}}}});
assert.commandWorked(res);
assert.eq(res.values.sort(), [3]);
// Test distinct with $near query predicate.
coll.dropIndexes();
// A. Unindexed key, no geo index on query predicate.
res = coll.runCommand('distinct',
{key: 'zone', query: {'loc.coordinates': {$near: [0, 0], $maxDistance: 1}}});
assert.commandFailed(res);
// B. Unindexed key, with 2d index on query predicate.
assert.commandWorked(coll.ensureIndex({'loc.coordinates': '2d'}));
res = coll.runCommand('distinct',
{key: 'zone', query: {'loc.coordinates': {$near: [0, 0], $maxDistance: 1}}});
assert.commandWorked(res);
assert.eq(res.values.sort(), [3]);
// C. Indexed key, with 2d index on query predicate.
assert.commandWorked(coll.ensureIndex({zone: 1}));
res = coll.runCommand('distinct',
{key: 'zone', query: {'loc.coordinates': {$near: [0, 0], $maxDistance: 1}}});
assert.commandWorked(res);
assert.eq(res.values.sort(), [3]);
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