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reset

Reset Apache Cassandra database connection options to defaults

Description

example

opts = reset(opts) resets all Apache Cassandra® database connection options to their default values for all properties of the CassandraConnectionOptions object.

Examples

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Create, configure, and test an Apache™ Cassandra® data source for a Cassandra database. Reset the Cassandra connection options to their default values. Then configure, test, and save the data source with different Cassandra connection options.

Create a Cassandra data source for a Cassandra database connection.

vendor = "Cassandra";
opts = databaseConnectionOptions("native",vendor)
opts = 
  CassandraConnectionOptions with properties:

              DataSourceName: ""
                      Vendor: "Cassandra"

               ContactPoints: "localhost"
                  PortNumber: 9042
                  SSLEnabled: false
                LoginTimeout: 5
              RequestTimeout: 12

opts is an CassandraConnectionOptions object with these properties:

  • DataSourceName — Name of the data source

  • Vendor — Database vendor name

  • ContactPoints — Contact points

  • PortNumber — Port number

  • SSLEnabled — SSL-enabled connection

  • LoginTimeout — Login timeout

  • RequestTimeout — Request timeout

Configure the data source by setting the Cassandra connection options for the data source CassandraDataSource, local host address for one node in the cluster, port number 9042, SSL encryption that is disabled, login timeout of 5 seconds, and request timeout of 12 seconds.

opts = setoptions(opts, ...
    "DataSourceName","CassandraDataSource", ...
    "ContactPoints","localhost","PortNumber",9042, ...
    "SSLEnabled",false,"LoginTimeout",5, ...
    "RequestTimeout",12)
opts = 
  CassandraConnectionOptions with properties:

              DataSourceName: "CassandraDataSource"
                      Vendor: "Cassandra"

               ContactPoints: "localhost"
                  PortNumber: 9042
                  SSLEnabled: false
                LoginTimeout: 5
              RequestTimeout: 12

The setoptions function sets the DataSourceName, ContactPoints, PortNumber, SSLEnabled, LoginTimeout, and RequestTimeout properties in the CassandraConnectionOptions object.

Test the database connection with a blank user name and password. The testConnection function returns the logical 1, which indicates the database connection is successful.

username = "";
password = "";
status = testConnection(opts,username,password)
status = logical
   1

Reset the Cassandra connection options to their default values. The properties of the CassandraConnectionOptions object contain the default values.

opts = reset(opts)
opts = 
  CassandraConnectionOptions with properties:

              DataSourceName: ""
                      Vendor: "Cassandra"

               ContactPoints: "localhost"
                  PortNumber: 9042
                  SSLEnabled: false
                LoginTimeout: 5
              RequestTimeout: 12

Configure the data source by setting the Cassandra connection options for the data source CassandraDataSource, local host address for one node in the cluster, port number 9042, SSL encryption that is disabled, login timeout of 5 seconds, and request timeout of 20 seconds.

opts = setoptions(opts, ...
    "DataSourceName","CassandraDataSource", ...
    "ContactPoints","localhost","PortNumber",9042, ...
    "SSLEnabled",false,"LoginTimeout",5, ...
    "RequestTimeout",20)
opts = 
  CassandraConnectionOptions with properties:

              DataSourceName: "CassandraDataSource"
                      Vendor: "Cassandra"

               ContactPoints: "localhost"
                  PortNumber: 9042
                  SSLEnabled: false
                LoginTimeout: 5
              RequestTimeout: 20

The setoptions function sets the DataSourceName, ContactPoints, PortNumber, SSLEnabled, LoginTimeout, and RequestTimeout properties in the CassandraConnectionOptions object.

Test the database connection again.

username = "";
password = "";
status = testConnection(opts,username,password)
status = logical
   1

Save the configured data source.

saveAsDataSource(opts)

Input Arguments

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Database connection options, specified as a CassandraConnectionOptions object.

Output Arguments

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Database connection options, returned as a CassandraConnectionOptions object.

Version History

Introduced in R2021a