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Avoid multiple $nears in one query (#3798)

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Mongo has a hard limit on 1 $near operation per query. Restructuring to
avoid SERVER-13732 should not invalidate a query by creating multiple
$near operations.

Additionally, queries with multiple $ors are now recursively handled,
whereas before, ops at the top level would only have been pushed one
level deeper.

https://github.com/parse-community/parse-server/issues/3767
This commit is contained in:
Jack Wearden
2017-05-10 05:32:08 -07:00
committed by Florent Vilmart
parent 64e6f40779
commit 7b9ebc4e8e
2 changed files with 34 additions and 1 deletions
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23
spec/DatabaseController.spec.js
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@@ -13,6 +13,29 @@ describe('DatabaseController', function() {
done();
});
it('should not restructure SERVER-13732 queries with $nears', (done) => {
var query = {$or: [{a: 1}, {b: 1}], c: {$nearSphere: {}}};
validateQuery(query);
expect(query).toEqual({$or: [{a: 1}, {b: 1}], c: {$nearSphere: {}}});
query = {$or: [{a: 1}, {b: 1}], c: {$near: {}}};
validateQuery(query);
expect(query).toEqual({$or: [{a: 1}, {b: 1}], c: {$near: {}}});
done();
});
it('should push refactored keys down a tree for SERVER-13732', (done) => {
var query = {a: 1, $or: [{$or: [{b: 1}, {b: 2}]},
{$or: [{c: 1}, {c: 2}]}]};
validateQuery(query);
expect(query).toEqual({$or: [{$or: [{b: 1, a: 1}, {b: 2, a: 1}]},
{$or: [{c: 1, a: 1}, {c: 2, a: 1}]}]});
done();
});
it('should reject invalid queries', (done) => {
expect(() => validateQuery({$or: {'a': 1}})).toThrow();
done();