I've a mongo db query to fetch some data as shown below
collection.find(lastUpdated: ['$gte': startDate.toLong(), '$lt': endDate.toLong()], resource: ['$gt': limit]).findAll().toList()
resource is a dynamic field which could have values like:
parameter1, parameter2 ... and so on.
I'm passing resource as method parameter in this query.
Can somebody suggest some way through which I can dynamically use resource without hard coding its value as (paramter1 or parameter2 or parameter3 ...) in my query
yeah you are almost there you just need to pass it as a variable and use () syntax on the Map to indicate that you are using a variable as a key instead of a literal value.
change this:
resource: ['$gt': limit]
to this:
(resource): ['$gt': limit]
Full query:
def resource = "parameter1"; //or parameter2 ...
collection.find(lastUpdated: ['$gte': startDate.toLong(), '$lt': endDate.toLong()], (resource): ['$gt': limit]).findAll().toList()
Related
I use openapi v2.
I read this document https://swagger.io/docs/specification/serialization/ .
I want to define path that take array and 1 value query parameter like below.(userIds and groupId)
/users{?userIds}{groupId}
But I call this url like below, it's return 404.
const url = '/user?userIds=10,11&groupId=1'
How to define it?
I am new to MongoDB and CRUD APIs.
I have created my first database and inserted some data. I can do get, post and delete requests.
Now I want to request a 'get' by adding a parameter, so I do the following:
router.get('/:story_name', async function (req, res, next) {
const selectedStory = await loadStoryToRead()
res.send(await selectedStory.find({}).toArray())
})
say that story_name is S1C1,
I can do http://localhost:3000/api/whatever/s1c1 to get the data.
I would have expected to retrieve the data ONLY by using the specified parameter, however I can use the ID or the date or any other parameter found in the json file to get the data.
for example I can do
http://localhost:3000/api/whatever/5d692b6b21d5fdac2... // the ID
or
http://localhost:3000/api/whatever/2019-08-30T13:58:03.035Z ... // the created_at date
and obtain the same result.
Why is that?
How can I make sure that if I use router.get('/:story_name' ... I can retrieve the data only if I use the 'story_name' parameter?
Thanks!
* UPDATE *
my loadStoryToRead() looks like this:
async function loadStoryToRead () {
const client = await mongodb.MongoClient.connect(
'mongodb+srv://...', {
useNewUrlParser: true
})
return client.db('read').collection('selectedStory')
}
I will try to reformulate my question.
I want to ensure that the data is retrieved only by adding the 'story_name' parameter in the URL and not by adding any other parameter within the file.
The reading that I have done suggested to add the parameter to the get request, but when I do it, it doesn't matter what parameter I enter, I can still retrieve the data.
The delete request, however, is very specific. If I use router.delete('/:id'... the only way to delete the file is by using the ID parameter.
I would like to obtain the same with a get request and not using the 'id' but by using 'story_name'.
you can use regular expression capabilities for pattern matching strings in queries.
Syntax is:
db.<collection>.find({<fieldName>: /<string>/})
for example, you can use
var re = new RegExp(req.params.story_name,"g");
db.users.find({$or:[{"name": re}, {"_id": re}, {..other fields}]});
You can use $and and $or according to your requirement.
To read more follow the link
https://docs.mongodb.com/manual/reference/operator/query/regex/
I want to put the query result from one collection in a variable and use it as input for query in another collection. The queries look like this as follows:
Query 1:
var ID=db.User.findOne({Name:"Ivan"}, {ID: 1});
db.Artists.find({"Listeners.ID":ID});
Query 2:
var Friends=db.Users.find({Friends:x});
//Users.Friends is an array of interger identifier for User
db. Artists.find({"Listeners.ID":{$in:Friends}});
But they all don't work. How to write the right one?
The query db.User.findOne({Name:"Ivan"}, {ID: 1}); does not return a single value, it returns the document, reduced to the field you requested. What you get is an object, with two fields: _id (because you didn't explicitly exclude it) and ID (when it exists in the document). Your var ID looks like this:
{
_id:ObjectId(<long hex string>),
ID:<value>
}
So when you want to query by the ID value, you need to specify it:
db.Artists.find({"Listeners.ID":ID.ID});
Regarding your second query: when you use find instead of findOne you get a cursor object which can then be used to retrieve the individual documents using cursor.next() or cursor.toArray().
I am trying to insert a vertex with orientjs(previously oriento) query builder. My class has a link type property pointing to another class.
I know I can get it to work with a raw query string but I would love to use the query builder.
Here is what I've tried so far :
db.insert()
.into('VertexClassName')
.set({"prop":"value", "linkProperty":"33:1289287"})
db.insert()
.into('VertexClassName')
.set({"prop":"value", "linkProperty":"#33:1289287"})
I get the following error :
Error on saving record in cluster #13
Am I setting properties in the right way ?
Could the error be related to somtehing else ?
I have sucessfully ran an insert query in the cluster #13 with a raw query string in the studio...
According to the official documentation it seems that the problem might be at the end of your statement
db.insert().into('VertexClassName')
.set({"prop":"value", "linkProperty":"33:1289287"}).one()
.then(function (data) {
// callback
});
Check if your code works adding one() to the pipe line
EDITED: I found this method in orientjs.
db.create('VERTEX', 'V')
.set({
key: 'value',
foo: 'bar'
})
.one()
.then(function (vertex) {
console.log('created vertex', vertex);
});
When using Tinkerpop API they recommend using createVertex instead of insert, because createVertex is intended for graphs and insert for Documents... Could you try with the create() method instead?
I am using SQL and it worked.
sql = "INSERT INTO Station set linked = (select from LinkedClass where LinkedProb = 'value'), prop = 'value'"
OrientVertex vertex = new OrientVertex();
vertex = graph.command(new OCommandSQL(sql)).execute();
I don't think that's possible unless you've added a proper field with the right type 'Link' in your schema. (which I rarely do).
Now instead of having the right 'link' type inserted you can do the opposite, store is as a String, and leverage the query functions to use it correctly:
db.insert().into('table').set({prop: '#15:14'}).one();
And it will be converted as String (which is a bit sad) but then you can use that in your queries:
SELECT eval(prop) FROM table;
And it will be 'eval'-ed to a Node RecordID that you can directly use and call functions like expand() on.
For example:
SELECT name FROM (SELECT expand(eval(prop)) FROM table);
Will eval the node stored in the insert(), grab the node, expand it and collect its name property.
Here is scenario.
I have below pojo
Property {
String name;
String value;
}
I want to pass an array of above pojo as query param. How do i do that.
Something like
http://myservice.com?property:name=n1&property:value=v1&property:name=n2&property:value=v2
And I want to figure out at service end that v1 is the value for n1.
Is there a way to achieve this.
One way that you can pass this into a URL as the following -
sample.php?arr_args[key1]=value1&arr_args[key2]=value2