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Mongo DB Date Difference and and query condtion in same query in Java Mongo Template

Hi guys i trying to make query like following
update date more than 2 hours, then status=inprogress get all tasks.
query sample date is
{
"_id" : "ATK-l64KC3vm",
"nodeid" : "NOD-AJaodNfH",
"accountid" : "d983356b-7fde-4683-9ba5-e6b6f5a0680d",
"applicationid" : "59a57cb7-7d67-4d55-bd6c-ff537bcf05d6",
"avmdepid" : "DEP-1aa81899",
"instanceId" : "INS-YNXr1ldB",
"cloudinstanceid" : "",
"inputxml" : "",
"status" : "No value present",
"callbackUrl" : "",
"callbackMethod" : "PUT",
"callbackInput" : "<input></input>",
"priority" : "false",
"type" : "datapush",
"createdDt" : ISODate("2020-05-20T05:56:55.467Z"),
"updatedDt" : ISODate("2020-05-20T05:56:55.478Z"),
"agentid" : "IAG-R2koJqnk"
}
pls help to make this query in java Mongo template aggregation filter

First, we can use $addFields or $set to add new field (temporary) to document which will hold time difference. (in milliseconds)
db.collectionName.aggregate([
{"$addFields": {"timeDiff": { $subtract: [new Date(), "$updatedDt"]}}}
]);
Now, we will use those fields to filtering records using $match
db.collectionName.aggregate([
{"$addFields": {"timeDiff": { $subtract: [new Date(), "$updatedDt"]}}},
{$match: {"timeDiff":{ $gte: 2* 60* 60* 1000},"status":"in-progress"}}
]);
Now, we can remove additionally added field using $project
db.collectionName.aggregate([
{"$addFields": {"timeDiff": { $subtract: [new Date(), "$updatedDt"]}}},
{$match:{"timeDiff":{$gte: 2* 60* 60* 1000},"status":"in-progress"}},
{$project: {"timeDiff":0}}
]);

$set and positional operator doesn't work in Java?

I have the following document in MongoDb collection called hosts
{ "_id" : ObjectId("532aeec040a83df82181ff3c"),
"os" : "WINDOWS",
"name" : "Host 1",
"bas" : [
{ "wwn" : "EE:00:11:FF", "id" : "1" },
{ "wwn" : "AA:00:11:BB", "id" : "2" } ]
}
Now I want to update ba of id=1 in Host of name=Host 1 to { "wwn" : "AA:BB:CC:DD", "id" : "11" }. After the update the result will be
{ "_id" : ObjectId("532aeec040a83df82181ff3c"),
"os" : "WINDOWS",
"name" : "Host 1",
"bas" : [
{ "wwn" : "AA:BB:CC:DD", "id" : "11" },
{ "wwn" : "AA:00:11:BB", "id" : "2" } ]
}
For this I used the mongo shell command
db.hosts.update( { name : "Host 1", "bas.id" : "1" },
{ "$set" : { "bas.$" : { wwn : "AA:BB:CC:DD", id : "11"} }} );
which worked great. Now I wanted to do the same using Java drivers and here is my code
BasicDBObject example = new BasicDBObject("name", "Host 1").append("bas\uff0eid", "1");
BasicDBObject newValue = new BasicDBObject("\u0024set", new BasicDBObject("bas\uff0e\u0024", new BasicDBObject().append("wwn", "AA:BB:CC:DD).append("id","11")) ;
collection.update(example, newValue);
In the above code I had to replace . with \uff0 and $ with \u0024 to avoid exception being thrown. This update call is not updating the collection. When I inspected the BasicDBObject.toString() the JSON were same as what I had typed on console. Please help me.

I don't understand why you should need to write $ and . as Unicode escapes. I tried running your code with the actual characters in them and it worked fine with the 2.11 Java driver.
But your code has two problems: 1) the full stop . is \u002e, not \uff0e, which is a very different character. 2) the syntax of the last part of the statement is not correct, but that is probably a copying error.
Here's the code that I used, and it worked fine (I only created the objects and didn't actually run it against the database but I don't see why that wouldn't work).
BasicDBObject example = new BasicDBObject("name", "Host 1").append("bas.id", "1");
BasicDBObject newValue = new BasicDBObject("$set",
new BasicDBObject("bas.$",
new BasicDBObject()
.append("wwn", "AA:BB:CC:DD").append("id","11"))) ;

https://github.com/mongodb/mongo-java-driver/blob/master/src/main/com/mongodb/DBCollectionImpl.java#L249
If your value object doesn't have a key starting with $ then it will check the embedded document for illegal characters. Can you post your original code that had this problem, without the escapes?

How to get a a property in a property from a dbobject in java, mongodb

So I have a few dbobjects in my mongo database. Here's an example of one of the objects:
{ "_id" : { "$oid" : "525b048580c3fb0d62d2b6fc"} , "city" : "London" , "currentWeather" : [ { "cloudcover" : "25" , "humidity" : "82" , "observation_time" : "08:37 PM" , "precipMM" : "0.0" , "pressure" : "1008" , "temp_C" : "11" , "temp_F" : "52" , "visibility" : "10" , "weatherCode" : "113" , "weatherDesc" : [ { "value" : "Clear"}] , "weatherIconUrl" : [ { "value" : "http://cdn.worldweatheronline.net/images/wsymbols01_png_64/wsymbol_0008_clear_sky_night.png"}] , "winddir16Point" : "W" , "winddirDegree" : "280" , "windspeedKmph" : "19" , "windspeedMiles" : "12"}]}
Now, I need to get all the dbobjects in my database whose value is lower than a given "temp_C", I have used something like this:
BasicDBObject query = new BasicDBObject("temp_C", new BasicDBObject("&gt", graden));
But it's failing, and I think it is because the property is a subproperty of "currentWeather", yet I have no idea how to address this problem. I am using java to do this.

Looking at your document structure, you're trying to access a subdocument that lives inside an array in your document, so it's a bit more complicated than a standard query:
{ "_id" : { "$oid" : "525b048580c3fb0d62d2b6fc"} , <-- Document
"city" : "London" ,
"currentWeather" : [ <-- Array
{ "cloudcover" : "25", <-- Sub document
...etc...
"pressure" : "1008" ,
"temp_C" : "11",
"temp_F" : "52",
...etc...
}
]
}
In order to get to the nested object, you need to reference its position in the array (in this case, it's zero as it's the first element in the array) and then the field name in the sub document. So your query looks like this:
BasicDBObject query = new BasicDBObject("currentWeather.0.temp_C",
new BasicDBObject("$gt", 11));
Note you had two problems in your original query:
1) You need to reference currentWeather.0.temp_C
2) Your gt operator needs to start with a dollar sign not an ampersand.
Also, you said you wanted the query to return values lower than a given value, in which case you probably want $lt not $gt.

You can't directly use the value of the object of an array in a query. You can use aggregate framework of Mongo. Java Docs For Aggregate are here

mongodb geoSpatial query doesn't work

I'm trying to fetch records within a specific radius in km/miles.
mongodb 2d index:
db.collection.ensureIndex({locaction:"2d"})
a record in the collection has the indexed key:
"location" : { "longitude" : 34.791592164168, "latitude" : 32.0516908 0405 }
Calling collection's getIndexes() from shell gives me this:
...{
"v" : 1,
"key" : {
"location" : "2d"
},
"ns" : "events.events",
"name" : "location_2d"
}...
despite all the above, trying to fetch records with this command fails:
> db.events.find({location:{ $near :{ longitude:34,latitude:32},$maxDistance:10 / 3963.192}})
anyone can point out what prevent this from working?

AFAIK, $near takes an array of the two target values, so you can try giving your values in array: -
db.events.find({location:{ $near : [34, 32],$maxDistance:10 / 3963.192}})

MongoDB $near query using Java driver

I have some shops with products on them in my MongoDB db following this data model:
Shop
{
idShop, name, location {lat, lon}, products [] of int
}
If I run the following command in the mongoDB default console:
db.shops.find({products:1, location:{$near:[41.391204,2.145381]}}).limit(300)
to find the shops that have product nº 1 ordered by distance I get the following results:
{ "_id" : ObjectId("4f410cefe4b03a0e3cff6f5a"), "name" : "Shop1", "location" : { "lat" : 41.389915, "lon" : 2.135628 }, "products" : [ 1, 5, 4 ] }
{ "_id" : ObjectId("4f410cefe4b03a0e3cff6f59"), "name" : "Shop2 Center", "location" : { "lat" : 41.388191, "lon" : 2.128816 }, "products" : [ 1, 2, 3 ] }
{ "_id" : ObjectId("4f410cefe4b03a0e3cff6f5c"), "name" : "Shop3", "location" : { "lat" : 41.384712, "lon" : 2.172031 }, "products" : [ 6, 1 ] }
{ "_id" : ObjectId("4f410cefe4b03a0e3cff6f5d"), "name" : "Shop4", "location" : { "lat" : 41.384029, "lon" : 2.173936 }, "products" : [ 6, 1, 2, 3, 4, 5 ] }
Now, I want the same results but using my java servlet. If I search by only product number, the results are OK but not sorted. Then, if I try to sort them by adding a new key/value condition it doesn't return nothing. The code I'm using is the following:
BasicDBObject query = new BasicDBObject();
query.put("products", Integer.parseInt(idProduct));
QueryBuilder query2 = new QueryBuilder();
query2.near(Double.parseDouble(lat), Double.parseDouble(lon));
query.putAll(query2.get());
curShops = collShops.find(query);
This returns an empty JSON. I've also tryed other ways like:
BasicDBObject query = new BasicDBObject();
query.put("products", Integer.parseInt(idProduct));
ArrayList ar = new ArrayList(2);
ar.add(Double.parseDouble(lat));
ar.add(Double.parseDouble(lon));
query.put("location", new BasicDBObject("$near", ar));
curShops = collShops.find(query);
Without any luck.
Can anyone help me with this?
Thanks in advance.

I dont have any experience with java driver, but it seem to me the problem is in this line
query2.near(Double.parseDouble(lat), Double.parseDouble(lon));
Accoridng to mongodb documentation,
The code assumes that you are using decimal degrees in (longitude,
latitude) order. This is the same order used for the GeoJSON spec.
Using (latitude, longitude) will result in very incorrect results, but
is often the ordering used elsewhere, so it is good to double-check
Also from the java mongodb-api-doc, you can see
near
public QueryBuilder near(double x,
double y)
Equivalent of the $near operand
Parameters:
x - x coordinate
y - y coordinate
x-cordinate denotes Longitude here. So the location co-ordinates must be passed as [lon,lat] instead [lat,lon]
Change your query to
query2.near(Double.parseDouble(lon), Double.parseDouble(lat));
to make it work

Yes, this is pretty straight forward. I have just posted an example that should walk you through the solution at http://chuckjohnson.wordpress.com/ - see http://chuckjohnson.wordpress.com/2012/04/02/geospatial-location-based-searches-in-mongodb-part-2-simple-searching/