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Retain metadata in snapshot if needed #138

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Retain metadata in snapshot if needed #138

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13 changes: 8 additions & 5 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -345,7 +345,7 @@ ShareDbMongo.prototype.getSnapshot = function(collectionName, id, fields, option

collection.find(request.query, request.findOptions).limit(1).project(projection).next(function(err, doc) {
if (err) return callback(err);
var snapshot = (doc) ? castToSnapshot(doc) : new MongoSnapshot(id, 0, null, undefined);
var snapshot = (doc) ? castToSnapshot(doc, fields, options) : new MongoSnapshot(id, 0, null, undefined);
callback(null, snapshot);
});
});
Expand All @@ -367,7 +367,7 @@ ShareDbMongo.prototype.getSnapshotBulk = function(collectionName, ids, fields, o
if (err) return callback(err);
var snapshotMap = {};
for (var i = 0; i < docs.length; i++) {
var snapshot = castToSnapshot(docs[i]);
var snapshot = castToSnapshot(docs[i], fields, options);
snapshotMap[snapshot.id] = snapshot;
}
for (var i = 0; i < ids.length; i++) {
Expand Down Expand Up @@ -894,7 +894,7 @@ ShareDbMongo.prototype.query = function(collectionName, inputQuery, fields, opti
if (err) return callback(err);
var snapshots = [];
for (var i = 0; i < results.length; i++) {
var snapshot = castToSnapshot(results[i]);
var snapshot = castToSnapshot(results[i], fields, options);
snapshots.push(snapshot);
}
callback(null, snapshots, extra);
Expand Down Expand Up @@ -1406,7 +1406,7 @@ function castToDoc(id, snapshot, opLink) {
return doc;
}

function castToSnapshot(doc) {
function castToSnapshot(doc, fields, options) {
var id = doc._id;
var version = doc._v;
var type = doc._type;
Expand All @@ -1423,7 +1423,10 @@ function castToSnapshot(doc) {
delete data._id;
delete data._v;
delete data._type;
delete data._m;
var includeMetadata = (fields && fields.$submit) || (options && options.metadata);
if(!includeMetadata) {
delete data._m;
}
delete data._o;
return new MongoSnapshot(id, version, type, data, meta, opLink);
}
Expand Down