Created
September 21, 2020 13:21
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Rename MongoDB DBRef database name in all collections.
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var newDbName = 'comsave-miner'; | |
db.getCollectionNames().forEach(function (collName) { | |
var collDocsUpdated = 0; | |
db[collName].find().forEach(function (r) { | |
var refUpdated = false; | |
Object.keys(r).forEach(function(rKey){ | |
if(!r[rKey]) { | |
return; | |
} | |
var isObject = typeof r[rKey] === 'object'; | |
if(!isObject) { | |
return; | |
} | |
if (r[rKey]['$db'] && r[rKey]['$db'].length > 0) { | |
r[rKey]['$db'] = newDbName; | |
refUpdated = true; | |
} | |
else if (r[rKey].length > 0 && typeof r[rKey][0] === 'object' && r[rKey][0]['$db'] && r[rKey][0]['$db'].length > 0) { | |
r[rKey].forEach(function (innerR, i) { | |
r[rKey][i]["$db"] = newDbName; | |
}); | |
refUpdated = true; | |
} | |
}); | |
if(refUpdated) { | |
db[collName].replaceOne({ "_id": r._id }, r) | |
collDocsUpdated++; | |
} | |
}); | |
print(collName + ' updated ' + collDocsUpdated + ' docs.') | |
}); |
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