I am trying to add an element to a BasicDBList array and save it back to Mongodb, but when I check the result, it is not written. What did I do wrong? I use java driver version 2.7.2.
DBObject dbObject = coll.findOne(dbQuery);
BasicDBList unreadMsgs = (BasicDBList) dbObject.get("unreadMsgs");
Logger.debug("before incrementing unreadMsgs" + dbObject.toString());
unreadMsgs.add(new BasicDBObject("id", 1).append("unreadMsg", 1));
Logger.debug("after incrementing unreadMsgs : " + dbObject.toString());
coll.save(dbObject);
Logger.debug("check result: " + coll.findOne(dbQuery).toString());
before incrementing unreadMsgs{ "_id" : { "$oid" : "515c5eb88e3278e9c9d55867"} , "unreadMsgs" : [ ]}
after incrementing unreadMsgs : { "_id" : { "$oid" : "515c5eb88e3278e9c9d55867"} , "unreadMsgs" : [ { "id" : 1 , "unreadMsg" : 1}]}
check result: { "_id" : { "$oid" : "515c5eb88e3278e9c9d55867"} , "unreadMsgs" : [ ]}
The problem is that the coll.save(dbObject) is not updating anything.
It works as an insert and, since the _id already exists in the collection, you are getting a duplicateKey exception (you are just not seeing it because of configuration).
You have to use an update, here is how
The save call should work on that case, but I suggest you use an update with $addToSet operation.
Here's the code:
DBObject addToSetObj = BasicDBObjectBuilder.start()
.push("$addToSet")
.push("unreadMsgs")
.add("id", 1)
.add("unreadMsg", 1)
.pop()
.pop()
.get();
// addToSetObj will be { "$addToSet" : { "unreadMsgs" : { "id" : 1 , "unreadMsg" : 1}}}
coll.update(dbQuery, addToSetObj);
Logger.debug("check result: " + coll.findOne(dbQuery).toString());
Any doubts on how to use addToSet, check this out: http://docs.mongodb.org/manual/reference/operator/addToSet/
Thanks for everybody's answer. I found the real problem. It turns out that my collection is capped, and I am not allowed to insert more data into an existing document in a capped collection. I saw the exception after I changed WriteConcern to FSYNC_SAFE. I changed all my collections to uncapped, and the code works now.
Related
I'm attempting to get the 'code' from the 'DEBIT' field from a mongodb collection formatted as follows:
"_id" : ObjectId("1"),
{...}
"bookEntryActions" : {
"CREATE" : [
{
"nature" : "DEBIT",
"code" : "123"
},
{
"nature" : "CREDIT",
"code" : "456"
}
],
"DELETE" : [
{
"nature" : "DEBIT",
"code" : "123"
},
{
"nature" : "CREDIT",
"code" : "789"
}
]
{...}
}
I've tried the following methods:
Method #1:
Document debitGlAccountCode = (Document)landlord.get("bookEntryActions.CREATE.1");
Method #2:
Document bookEntryActions = (Document) landlord.get("bookEntryActions");
Document creationRentCodes = (Document) bookEntryActions.get("CREATE");
ObjectId debitGlAccountCode = (ObjectId) creationRentCodes.get(Filters.eq("nature", "DEBIT"));
Method #3:
ObjectId debitGlAccountCode = (ObjectId) landlord.get(Filters.eq("bookEntryActions.CREATE.nature", "DEBIT"));
My issue is that of all the methods I've tried, the return for the .get("CREATE") is null. Does anyone have any idea what the issue could be? I've verified that the CREATE field exists for all of the landlords using Robo3T.
Edit: each variable has gotten the data as follows
final MongoCollection<Document> landlordCollection = db.getCollection("landlord");
final FindIterable<Document> landlordDocs = landlordCollection.find();
MongoCursor<Document> llDocIter = landlordDocs.iterator();
while(llDocIter.hasNext()){
Document landlord = llDocIter.next();
LOGGER.info("landlord bookEntryActions: " + landlord.get("bookEntryActions"));
LOGGER.info("landlord create: " + landlord.get("bookEntryActions.CREATE"));
landlordArrayList.add(landlord);
}
From there I have a foreach loop which goes through all the landlords in the arrayList and is where the previously attempted methods above are used. (Note: I'm using the array list for now as it's a little easier to work with while debugging. Eventually I will do everything in the while loop).
It turns out that the way the database was set up "CREATE" is an array list of documents and thus I had just been working with the wrong data types. Upon adapting the code to work with the arraylist and not a Document its working.
Using Cursor need to fetch values of Inner Json which is in Array
Document looks like this
{
"_id" : ObjectId("5772932ce4b0be6213704c81"),
"employerId" : "57728cd7e4b0be6213704b17",
"jobSeekerId" : "5706426ae4b0c7ea74fda18b",
"readByJobSeeker" : true,
"readByJobEmployer" : true,
"interestChat" : [
{
"userChat" : "is this job avaliable ",
"lastChatRole" : "JOBSEEKER",
"lastChatTime" : ISODate("2017-08-10T15:20:25.017Z"),
"jobSeekerAcknowledgeFlag" : true,
"connectionCounterIncreamented" : false
}
],
"createdDate" : ISODate("2016-06-28T15:09:32.564Z"),
"lastModifiedDate" : ISODate("2017-08-10T15:31:12.564Z"),
"version" : NumberLong(20),
"active" : true
}
Issue is using query
db.interest.find({"interestChat":{$exists:true}}).forEach(function(myChat){print ("interest :: "+ myChat.interestChat); } ).pretty()
Not able to fetch data from Array as output come out as
interest :: [object BSON]
Need to fetch values of Inner json
The function print is not meant to bring json/bson objects.
Try printjson instead.
db.interest.find({"interestChat":{$exists:true}})
.forEach(function(myChat){
printjson({"interest": myChat.interestChat});
})
OR just printjson(myChat.interestChat);
I have this two documents in my mongoDB database:
db.DocumentFile.find().pretty()
{
"_id" : ObjectId("587f39910cc0fec092bdb10c"),
"_class" : "com.smartinnotec.legalprojectmanagement.dao.domain.DocumentFile",
"fileName" : "DocumentFile1",
"ending" : "jpg",
"projectId" : "587f39910cc0fec092bdb10b",
"active" : true,
"userIdBlackList" : [
"587f39910cc0fec092bdb10a"
]
}
{
"_id" : ObjectId("587f39910cc0fec092bdb10d"),
"_class" : "com.smartinnotec.legalprojectmanagement.dao.domain.DocumentFile",
"fileName" : "DocumentFile2",
"ending" : "jpg",
"projectId" : "587f39910cc0fec092bdb10b",
"active" : true,
"userIdBlackList" : [ ]
}
I have this code in order to get amount of query:
final Query query = new Query();
query.addCriteria(Criteria.where("userIdBlackList").nin(userId));
final Long amount = mongoTemplate.count(query, DocumentFile.class);
return amount.intValue();
The amount is 2 in this case what is wrong - it should be 1.
The query in Query object looks like this:
Query: { "userIdBlackList" : { "$nin" : [ "587f39910cc0fec092bdb10a"]}}
If I copy this query and made a query for the mongodb console like this:
db.DocumentFile.find({ "userIdBlackList" : { "$nin" : [ "587f39910cc0fec092bdb10a"]}}).pretty()
I get an amount of two, what if wrong because one document includes 587f39910cc0fec092bdb10a in userIdBlackList -> it should be one.
With this query command:
db.DocumentFile.find({userIdBlackList: { "$nin": ["587f39910cc0fec092bdb10a"] } }).pretty();
I get the right result, I am really confused at the moment.
Does anyone have any idea?
Maybe the problem ist that one time userIdBlackList is with quotation mark ("userIdBlackList") and the other time it isn't.
I think the problem is with the unintentional formatting picked up for "userIdBlackList". Your string is interpreted with non printing characters in the "??userIdBlackList" for all your search queries. I see little transparent square boxes when I copy your queries to mongo shell.
That tells me their is some encoding issue. Clear that formatting and see if that helps you.
Both $ne and $nin should work!
I have a mongo collection named firma which has one of the document structure as below:
{
"_id" : ObjectId("5729af099b3ebf1d0ca7ff05"),
"musteriler" : [
{
"_id" : "de0bf813-b707-4a8d-afc2-9752e05c3aa5",
"yetkiliListesi" : [
{
"_id" : "a5e487fa-2034-4817-94f2-3bd837b76284",
"ad" : "Burak",
"soyad" : "Duman 1",
"cepTel" : "3333333333333",
"mail" : "asdf#asdf.com"
},
{
"_class" : "com.bisoft.entity.MusteriYetkili",
"_id" : "bc4b537d-522a-4c9a-9f67-8ca243e18f46",
"ad" : "Ridvan",
"soyad" : "ENİŞ",
"cepTel" : "222222222222",
"mail" : "asdf#asdf.com"
}
]
}
],
"defaultTimezone" : "Europe/Istanbul"
}
In the above json, I need to update element of second array(yetkiliListesi) which _id = "a5e487fa-2034-4817-94f2-3bd837b76284"
Since I am using a java application(using mongo java driver and spring boot MongoTemplate) to access it and execute this query :
mongoTemplate.updateFirst(Query.query(Criteria.where("_id").is("5729af099b3ebf1d0ca7ff05").and("musteriler.yetkiliListesi._id").is("a5e487fa-2034-4817-94f2-3bd837b76284")),
new Update().set("musteriler.yetkiliListesi.$", yetkiliDBO), Firma.class);
In the above query, yetkiliDBO is a BasicDBObject and its content :
yetkiliDBO = {
'_class': 'com.bisoft.entity.MusteriYetkili',
'_id': "a5e487fa-2034-4817-94f2-3bd837b76284",
'ad': 'wer',
'soyad': 'xyz',
'cepTel': "222222222222",
mail: "asdf#asdf.com"
}
when execute my query I have an error
com.mongodb.WriteConcernException: { "serverUsed" : "192.168.2.250:27017" , "ok" : 1 , "n" : 0 , "updatedExisting" : false , "err" : "cannot use the part (musteriler of musteriler.yetkiliListesi.0) to traverse the element
What I need to do?
You can not use the '$' placeholder when traversing nested arrays.
The positional $ operator cannot be used for queries which traverse more than one array, such as queries that traverse arrays nested within other arrays, because the replacement for the $ placeholder is a single value
source
I would suggest restructuring your data into separate, less-nested collections.
I am trying to create a query using MongoDB Java Driver as part of an aggregation command. Currently I allow a date range or an array of specific dates as an argument. eg
<date>
<start>2013-12-10 00:00:00.000</start>
<end>2013-12-12 23:59:59.999</end>
</date>
or
<date>
<specificDates>2013-12-10 00:00:00.000,2013-12-13 00:00:00.000</specificDates>
</date>
The date range query works fine, I parse and convert the xml into a DBObject that produces the following query in mongo;
{ "$match" : { "d" : { "$gte" : { "$date" : "2013-10-01T00:00:00.000Z"} , "$lt" : { "$date" : "2013-10-04T00:00:00.000Z"}}}}
For the specificDates I want to return only results that occur between 00:00:00.000 on the given day and 00:00:00.000 of the next day. From my pretty basic knowledge of mongo querys i had hoped to do a similar $match as the date range, but have it use $in on an array of date ranges similar to the following;
{ "$match" : { "d" : { "$in" : [ { "$gte" : { "$date" : "2013-10-01T00:00:00.000Z"} , "$lt" : { "$date" : "2013-10-02T00:00:00.000Z"}} , { "$gte" : { "$date" : "2013-10-03T00:00:00.000Z"} , "$lt" : { "$date" : "2013-10-04T00:00:00.000Z"}}]}}}
The above query fails to return any results. I have noticed that $in is not listed in the mongodb manual under the Mongo Aggregation Framework section, but its not throwing any kind of errors that I would have expected for an unsupported operation.
I think the issue may come from this line in the MongoDB Manual;
If the field holds an array, then the $in operator selects the documents whose field holds an array that contains at least one element that matches a value in the specified array (e.g. , , etc.)
In my collection the date isn't stored in an array, I suppose I could store it in the collections in an single element array? (Actually, decided to try this quickly before I posted, no documents returned when the date entry in the document is stored in a single element array)
Document entry example
{ "_id" : ObjectId("52aea5b0065991de1a56d5b0"), "d" : ISODate("2013-12-15T00:00:11.088Z"), "t" : 1501824, "s" : 0, "e" : 601, "tld" : "uk", "y" : "domain:check", "n" : "removed.co.uk" }
Is anyone able to give me some advice as to how I should do this query? Thank you.
EDIT: I left the Java tag here in case anyone needs my DBObject creation code, though it shouldn't be necessary as the queries posted have been generated by my build.
EDIT2: So as Alan Spencer pointed out I should be using $or rather than $in, a working $or function is below (ignore the different formatting like the use of ISODate(), its just copy pasted from the mongo shell rather than getting output from my program)
{ $match : { $or : [ { d : { $gte : ISODate("2013-10-01T00:00:00.000Z"), $lt : ISODate("2013-10-02T00:00:00.000Z") } }, { d : { $gte : ISODate("2013-10-03T00:00:00.000Z"), $lt : ISODate("2013-10-04T00:00:00.000Z") } } ] } }
I think you're inverting the meaning of the $in.
$in is used to match exactly against a list of possible values, like
{"color":{"$in": ["red","green","blue"]}}
For your use case, you are trying to match if it satisfies the first or second, etc. So, you can use $or - http://docs.mongodb.org/manual/reference/operator/query/or/
{ "$match" : { "d" : { "$or" : [ { "$gte" : { "$date" : "2013-10-01T00:00:00.000Z"} , "$lt" : { "$date" : "2013-10-02T00:00:00.000Z"}} , { "$gte" : { "$date" : "2013-10-03T00:00:00.000Z"} , "$lt" : { "$date" : "2013-10-04T00:00:00.000Z"}}]}}}