insert
Description
returns the number of documents inserted into a collection using the MongoDB® C++ interface connection. Specify one or multiple documents to
insert.n
= insert(conn
,collection
,documents
)
Examples
Insert One Document into Collection as Structure
Connect to MongoDB® using the MongoDB C++ interface and export one document from MATLAB® and insert it into a collection. Specify the document to insert as a structure. In this example, the collection represents employee data.
Create a MongoDB connection to the database mongotest
using the MongoDB C++ interface. Here, the database server dbtb01
hosts this database using port number 27017
.
server = "dbtb01"; port = 27017; dbname = "mongotest"; conn = mongoc(server,port,dbname)
conn = connection with properties:
Database: "mongotest"
UserName: ""
Server: "dbtb01"
Port: 27017
CollectionNames: [13×1 string]
conn
is the connection
object that contains the MongoDB connection. The object properties contain information about the connection and the database.
The database name is
mongotest
.The user name is blank.
The database server is
dbtb01
.The port number is
27017
.This database contains 13 document collections.
Verify the MongoDB connection.
isopen(conn)
ans = logical
1
The database connection is successful because the isopen
function returns 1. Otherwise, the database connection is closed.
Create one document as the document
structure with three fields. Set the employee_id
field to 28, department_id
field to 80, and salary
field to 200,000.
document.employee_id = 28; document.department_id = 80; document.salary = 200000;
Specify the employees
collection. Insert the document into the collection by using the MongoDB C++ interface connection. The insert
function inserts one document into the collection.
collection = "employees";
n = insert(conn,collection,document)
n = int64
1
Close the MongoDB connection.
close(conn)
Insert Multiple Documents into Collection as Structure Array
Connect to MongoDB® using the MongoDB C++ interface and export multiple documents from MATLAB® and insert them into a collection. Specify documents to insert as a structure array. In this example, the collection represents employee data.
Create a MongoDB connection to the database mongotest
using the MongoDB C++ interface. Here, the database server dbtb01
hosts this database using port number 27017
.
server = "dbtb01"; port = 27017; dbname = "mongotest"; conn = mongoc(server,port,dbname)
conn = connection with properties:
Database: "mongotest"
UserName: ""
Server: "dbtb01"
Port: 27017
CollectionNames: [13×1 string]
conn
is the connection
object that contains the MongoDB connection. The object properties contain information about the connection and the database.
The database name is
mongotest
.The user name is blank.
The database server is
dbtb01
.The port number is
27017
.This database contains 13 document collections.
Verify the MongoDB connection.
isopen(conn)
ans = logical
1
The database connection is successful because the isopen
function returns 1. Otherwise, the database connection is closed.
Create two documents as structures with these fields: employee_id
, department_id
, and salary
. For the employee1
structure, set the employee_id
field to 26, department_id
field to 80, and salary
field to 100,000. For the employee2
structure, set the same fields to the values 27, 90, and 150,000 respectively. Create the documents
structure array from these documents.
employee1.employee_id = 26; employee1.department_id = 80; employee1.salary = 100000; employee2.employee_id = 27; employee2.department_id = 90; employee2.salary = 150000; documents = [employee1 employee2];
Specify the employees
collection. Insert documents into the collection using the MongoDB connection. The insert
function inserts two documents into the collection.
collection = "employees";
n = insert(conn,collection,documents)
n = int64
2
Close the MongoDB connection.
close(conn)
Insert Multiple Documents into Collection as Table
Connect to MongoDB® using the MongoDB C++ interface and export documents from MATLAB® and insert them into a collection. Specify documents to insert as a table. In this example, the collection represents employee data.
Create a MongoDB connection to the database mongotest
using the MongoDB C++ interface. Here, the database server dbtb01
hosts this database using port number 27017
.
server = "dbtb01"; port = 27017; dbname = "mongotest"; conn = mongoc(server,port,dbname)
conn = connection with properties:
Database: "mongotest"
UserName: ""
Server: "dbtb01"
Port: 27017
CollectionNames: [13×1 string]
conn
is the connection
object that contains the MongoDB connection. The object properties contain information about the connection and the database.
The database name is
mongotest
.The user name is blank.
The database server is
dbtb01
.The port number is
27017
.This database contains 13 document collections.
Verify the MongoDB connection.
isopen(conn)
ans = logical
1
The database connection is successful because the isopen
function returns 1. Otherwise, the database connection is closed.
Create two documents using these workspace variables:
department_ids
— Double arrayemployee_ids
— Double arraysalaries
— Double array
Create the documents
table from these workspace variables.
department_ids = [80;90]; employee_ids = [24;25]; salaries = [100000;150000]; documents = table(department_ids,employee_ids,salaries);
Specify the employees
collection. Insert documents into the collection using the MongoDB connection. The insert
function inserts two documents into the collection.
collection = "employees";
n = insert(conn,collection,documents)
n = int64
2
Close the MongoDB connection.
close(conn)
Insert Multiple Documents into Collection as Cell Array of Structures
Connect to MongoDB® using the MongoDB C++ interface and export documents from MATLAB® and insert them into a collection. Specify documents to insert as a cell array of structures. In this example, the collection represents employee data.
Create a MongoDB connection to the database mongotest
using the MongoDB C++ interface. Here, the database server dbtb01
hosts this database using port number 27017
.
server = "dbtb01"; port = 27017; dbname = "mongotest"; conn = mongoc(server,port,dbname)
conn = connection with properties:
Database: "mongotest"
UserName: ""
Server: "dbtb01"
Port: 27017
CollectionNames: [13×1 string]
conn
is the connection
object that contains the MongoDB connection. The object properties contain information about the connection and the database.
The database name is
mongotest
.The user name is blank.
The database server is
dbtb01
.The port number is
27017
.This database contains 13 document collections.
Verify the MongoDB connection.
isopen(conn)
ans = logical
1
The database connection is successful because the isopen
function returns 1. Otherwise, the database connection is closed.
Create two documents as the structures employee1
and employee2
. Create the documents
cell array using these structures.
employee1.department_id = 90; employee1.employee_id = 22; employee1.salary = 100000; employee2.department_id = 80; employee2.employee_id = 23; employee2.salary = 150000; documents = {employee1;employee2};
Specify the employees
collection. Insert documents into the collection using the MongoDB C++ interface connection. The insert
function inserts two documents into the collection.
collection = "employees";
n = insert(conn,collection,documents)
n = int64
2
Close the MongoDB connection.
close(conn)
Input Arguments
conn
— MongoDB C++ interface connection
connection
object
MongoDB C++ interface connection, specified as a connection
object.
collection
— Collection name
string scalar
Collection name, specified as a string scalar.
Example: "taxidata"
Data Types: string
documents
— Documents to insert
string scalar | character vector | structure | ...
Documents to insert into a MongoDB collection, specified as one of these types:
String scalar
Character vector
Structure
Structure array
Cell array of structures
Table
Handle or value classes
When working with string scalars and character vectors, you specify key-value pairs as shown in these examples.
String scalar —
"{""department"":""Sales"",""employeename"":""George Mason""}"
Character vector —
'{''department'':''Sales'',''employeename'':''George Mason''}'
For handle and value classes, you can define your own class. After you instantiate a class, you can insert the resulting object into MongoDB. However, the resulting object properties must contain data types that can be converted to MATLAB® data types. For example, if one of the object properties is a Java® object, then you cannot insert the object into MongoDB. For details about these classes, see Handle Classes.
Output Arguments
n
— Number of documents inserted
int64
scalar
Number of documents inserted into a collection in the database, returned
as an int64
scalar.
Note
The insert
function does not return the
containers.Map
data type.
Version History
Introduced in R2021b
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