In this post, I am sharing MongoDb’s “Help methods” and the details on
specific methods including syntax and also for examples to go to below
reference links.
Stayed Informed - Apache Cassandra vs. Mongodb
Stayed Informed - Apache Cassandra vs. Mongodb
1.
adminCommand(nameOrDocument)
– It is used to switches to “admin” db and runs command.
2.
auth(username,
password)
3.
cloneDatabase(fromhost)
4.
commandHelp(name)
– It is returns the help for the command.
5.
copyDatabase(fromdb,
todb, fromhost)
6.
createCollection(name,
{ size : ..., capped : ..., max : ... } )
7.
createView(name,
viewOn, [ { $operator: {...}}, ... ], { viewOptions } )
8.
createUser(userDocument)
– Used to create the users.
9.
currentOp()
– It is used to displays currently executing operations in the db.
10. dropDatabase()
– It’s used to drop db.
11. eval()
– It is used to deprecated.
12. fsyncLock()
– It’s used to flush data to disk and lock server for backups.
13. fsyncUnlock()
– It’s used to unlocks server following a db.fsyncLock().
14. getCollection(cname)
– It’s used to same as db['cname'] or db.cname
15. getCollectionInfos([filter])
– It is returns a list that contains the names and options of the dbs
collections.
16. getCollectionNames()
– It used to get the collections name.
17. getLastError()
– It is returns the error message string.
18. getLastErrorObj()
– It is return full status object.
19. getLogComponents() - It is used to get log.
20. getMongo()
– It used to get the server connection object.
21. getMongo().setSlaveOk() - It used to allow queries on a replication
slave server.
22. getName()
– It is used to get the name.
23. getPrevError()
- It is used to get the previous error.
24. getProfilingLevel()
– It is used to profile deprecated.
25. getProfilingStatus()
– It is returns, if profiling is on and slow threshold.
26. getReplicationInfo()
– It is used to display the replication Information.
27. getSiblingDB(name)
- It used to get the db at the same
server as this one.
28. getWriteConcern()
– It is returns the write concern used for any operations on this db, inherited
from server object if set.
29. hostInfo()
- It is used to get details about the
servers host.
30. isMaster()
– It use to check the replica primary status.
31. killOp(opid)
- It use to kills the current operation
in the db.
32. listCommands()
– It use to lists all the db commands.
33. loadServerScripts()
– It is loads all the scripts in db.system.js.
34. logout()
– It is used to logout.
35. printCollectionStats()
– It is used to print the collections status.
36. printReplicationInfo()
– It is used to print the replication information.
37. printShardingStatus()
- It is used to print the sharding status.
38. printSlaveReplicationInfo()
39. dropUser(username)
- It is used to drop the existing users.
40. repairDatabase()
– It is used to repair the database.
41. resetError()
– It is used to reset the error msg.
42. runCommand(cmdObj)
– It use to run a database command. if
cmdObj is a string, turns it into { cmdObj : 1 }.
43. serverStatus()
– It used to display the server status.
44. setLogLevel(level,<component>)
45. setProfilingLevel(level,<slowms>)
0=off 1=slow 2=all
46. setWriteConcern(
<write concern doc> ) – It use to sets the write concern for writes to
the db.
47. unsetWriteConcern(
<write concern doc> ) – It use to unsets the write concern for writes to
the db.
48. setVerboseShell(flag)
– It used to display extra information in shell output.
49. shutdownServer()
– It used to shout down the server.
50. stats()
– It is used to display the stats.
51. version()
– It is used to display the current version of the server.
Stayed
Informed – 117 Best MongoDB Tutorials with Examples
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Anil Singh is an author, tech blogger, and software programmer. Book writing, tech blogging is something do extra and Anil love doing it. For more detail, kindly refer to this link..
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