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Support for Aggregate Queries (#4207)

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* Support for Aggregate Queries

* improve pg and coverage

* Mongo 3.4 aggregates and tests

* replace _id with objectId

* improve tests for objectId

* project with group query

* typo
This commit is contained in:
Diamond Lewis
2017-11-12 13:00:22 -06:00
committed by Florent Vilmart
parent 4e207d32a7
commit 7223add446
8 changed files with 675 additions and 1 deletions
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21
src/Adapters/Storage/Mongo/MongoStorageAdapter.js
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@@ -405,6 +405,27 @@ export class MongoStorageAdapter {
}));
}
distinct(className, schema, query, fieldName) {
schema = convertParseSchemaToMongoSchema(schema);
return this._adaptiveCollection(className)
.then(collection => collection.distinct(fieldName, transformWhere(className, query, schema)));
}
aggregate(className, pipeline, readPreference) {
readPreference = this._parseReadPreference(readPreference);
return this._adaptiveCollection(className)
.then(collection => collection.aggregate(pipeline, { readPreference, maxTimeMS: this._maxTimeMS }))
.then(results => {
results.forEach(result => {
if (result.hasOwnProperty('_id')) {
result.objectId = result._id;
delete result._id;
}
});
return results;
});
}
_parseReadPreference(readPreference) {
if (readPreference) {
switch (readPreference) {