Documents in my MongoDB collection look like this:
My Mongo version is 4.2.3
{
"_id": "SAGE-UW-00005",
"carriers": [
{
"bindable": true,
"carrierCode": "LMICO",
"mapped": true,
"products": [
{
"industries": [
{
"industryCode": null,
"states": "GA"
}
],
"isAllNCCIValid": null,
"isAllstateValid": true,
}
],
"questionCode": "LMGENRL17"
}
],
"column": 1,
"dataType": null,
}
This is my desired output:
{
"_id": "SAGE-UW-00005",
"carriers": [
{
"bindable": true,
"carrierCode": "LMICO",
"mapped": true,
"products": [
{
"industries": [
{
"states": "GA"
}
],
"isAllstateValid": true,
}
],
"questionCode": "LMGENRL17"
}
],
"column": 1,
}
I am not sure the depth of nested subdocuments in the collection, but there should be a lot of null fields in the collection. My backend code uses $exists to query the fields in the collection, so null is creating a problem here.
I am not sure the depth of nested subdocuments in the collection, but there should be a lot of null fields in the collection
It is a dynamic question. Best option would be replace the document after removing null fields in the code.
As you have nested levels, I would suggest you to map your data to pojo and check whether any entry and field is null. Unless you aware of the fields, it is not efficient to remove them.
Related
I'm new to solr and I'm trying to query for field names excluding fields with multiValued=true.
So far I have
select?q=*:*&wt=csv&rows=0&facet
which returns all the fields.
Is there a way to modify the query to check if a field is multivalued?
You can retrieve information about all the defined fields through the Schema API. The response will contain a multiValued field set to true if the field is defined as multivalued:
v1 API:
http://localhost:8983/techproducts/schema/fields
v2 API:
http://localhost:8983/api/collections/techproducts/schema/fields
{
"fields": [
{
"indexed": true,
"name": "_version_",
"stored": true,
"type": "long"
},
{
"indexed": true,
"multiValued": true, <----
"name": "cat",
"stored": true,
"type": "string"
},
],
"responseHeader": {
"QTime": 1,
"status": 0
}
}
I have mongoDB content as below:
[
{
"_id":{
"$oid":"57c6699711bd6a0976cabe8a"
},
"ID":"1111",
"FullName":"AAA",
"Category":[
{
"CategoryId":{
"$oid":"57c66ebedcba0f63c1ceea51"
},
"_id":{
"$oid":"57e38a8ad190ea1100649798"
},
"Value":[
{
"Name":""
}
]
},
{
"CategoryId":{
"$oid":"57c3df061eb1e59d3959cc40"
},
"_id":{
"$oid":"57e38a8ad190ea1100649797"
},
"Value":[
[
"111",
"XXXX",
"2005"
],
[
"1212",
"YYYY",
"2000"
],
[
"232323",
"ZZZZZ",
"1999"
]
]
}
]
},
{
"_id":{
"$oid":"57c6699711bd6a0976cabe8a"
},
"ID":"1111",
"FullName":"BBB",
"Category":[
{
"CategoryId":{
"$oid":"57c66ebedcba0f63c1ceea51"
},
"_id":{
"$oid":"57e38a8ad190ea1100649798"
},
"Value":[
{
"Name":""
}
]
},
{
"CategoryId":{
"$oid":"57c3df061eb1e59d3959cc40"
},
"_id":{
"$oid":"57e38a8ad190ea1100649797"
},
"Value":[
[
"4444",
"XXXX",
"2005"
],
[
"7777",
"GGGG",
"2000"
],
[
"8888",
"ZZZZZ",
"1999"
]
]
}
]
}
]
Here I have an array named 'Category' where it contains objects with different category id.
I need to
select a particular category id - '57c3df061eb1e59d3959cc40'
From the above selected Category, we get 'Value' array
From Value array need to find if the second value is equal to 'ZZZZZ' ie. value[1] == 'ZZZZZ'
And now, update the matched value arrays with a new value at the end
Eg:
[
"232323",
"ZZZZZ",
"1999"
]
should be updated to
[
"232323",
"ZZZZZ",
"1999",
"update1"
]
and
[
"8888",
"ZZZZZ",
"1999"
]
should be updated to
[
"8888",
"ZZZZZ",
"1999",
"update1"
]
I have tried as below:
resume.update({
"Category.CategoryId": new ObjectId('57c3df191eb1e59d3959cc43'),
"Category.Value.$.1": 'ZZZZZ'
},
{"$set": {"Category.Value.$.3": "update1"}
}, function(err, resData){
res.send(resData);
});
But, nothing gets updated. Its there any way to get this work. Please help to update the inner array.
Thanks in advance.
Your goal is not possible at the moment since you need to update two positional elements.
There is a JIRA trackable for the sort of behaviour you want here: https://jira.mongodb.org/browse/SERVER-831
It's a problem since you need to match two elements positions:
the Category element with the matched CategoryId
the Value element in the Value array of arrays
If one of these wouldn't be an array it would have been possible.
Anyway, Your update try above was wrong. IF this feature was possible (and it is not!!!) it would have been something like this:
db.resume.update(
{
Category: {
$elemMatch: {
CategoryId: ObjectId('57c3df061eb1e59d3959cc40'),
Value: {
$elemMatch: {
'1': 'ZZZZZ'
}
}
}
}
},
{
$push: {
'Category.$.Value.$': 'update1'
}
}
)
The positional $ operator should be used during the update and not the find like you did, and it will update the first element that matched the query.
Doing the above will return the error:
Too many positional (i.e. '$') elements found in path 'Category.$.Value.$'
Because of the missing feature I explained at the top.
So, currently (version 3.2) you will not be able to do this unless you change your schema.
i have a model of how this:
_id:ObjectId("5705005b240166e927f841cb")
figures: [
{
id: "5433234"
figure: [
{
"id":"figure_543",
"active": false,
"name": "Alvar"
},
{
"id":"figure_431",
"active": false,
"name": "Peter"
}
]
},
{
id: "1276544"
figure: [
{
"id":"figure_123",
"active": false,
"name": "Jhon"
}
]
},
{
id: "1231645"
figure: [
{
"id":"figure_154",
"active": false,
"name": "Luka"
}
]
}
]
I'am doing this:
db.collection.update({"_id": userId, "figures.figure.id": figureId}, {$set:{"figures.figure.$.active": true}})
userId and figureId are variables that come from req.body on expressjs.
But i see this:
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
My question is, how can i update the field active of figure on nested array with mongoose?
Thank's!!!
In my data, I have two fields that I want to use as an index together. They are sensorid (any string) and timestamp (yyyy-mm-dd hh:mm:ss).
So I made an index for these two using the Cloudant index generator. This was created successfully and it appears as a design document.
{
"index": {
"fields": [
{
"name": "sensorid",
"type": "string"
},
{
"name": "timestamp",
"type": "string"
}
]
},
"type": "text"
}
However, when I try to make the following query to find all documents with a timestamp newer than some value, I am told there is no index available for the selector:
{
"selector": {
"timestamp": {
"$gt": "2015-10-13 16:00:00"
}
},
"fields": [
"_id",
"_rev"
],
"sort": [
{
"_id": "asc"
}
]
}
What have I done wrong?
It seems to me like cloudant query only allows sorting on fields that are part of the selector.
Therefore your selector should include the _id field and look like:
"selector":{
"_id":{
"$gt":0
},
"timestamp":{
"$gt":"2015-10-13 16:00:00"
}
}
I hope this works for you!
I'm using ElasticSearch in my system and I have a question.
When I use GET in this uri:
/dev/category/_search
I receive this:
{
...
"title": "Sound",
"slug": "sound",
...
}
It's correct. But I have many fields in this query and I want to optimize this one.
I GET this uri:
/category/_search?show_in_menu=true&fields=title,slug
When I add the param fields, all fields are returning as array. In this example, return this:
"fields": {
"slug": [
"Sound"
],
"title": [
"sound"
]
}
There is a way to return only the field intead of an array?
Thanks!
You can apply source filtering
Allows to control how the _source field is returned with every hit.
Example from documentation:
{
"_source": {
"include": [ "obj1.*", "obj2.*" ],
"exclude": [ "*.description" ],
}
"query" : {
"term" : { "user" : "kimchy" }
}
}
Hope it helps.