Wire listener

The wire listener is a mid-tier gateway server that enables communication between MongoDB clients and the HCL OneDB™ database server.

The wire listener is a Java™ application and is provided as an executable JAR file as part of the HCL OneDB APIs package. The JAR file provides access to the MongoDB API.

MongoDB API access
The wire listener implements the MongoDB Wire Protocol. This allows you to connect MongoDB applications and client drivers to the HCL OneDB database through the wire listener. The MongoDB applications send MongoDB operations and commands to the wire listener, which automatically translates those commands to SQL which it runs against the HCL OneDB database using JDBC.
You can use the MongoDB API to access HCL OneDB JSON/BSON collections, relational tables, or TimeSeries tables.

The wire listener configuration properties file defines every operational characteristic. By default, when you create a database or a table through the wire listener, automatic location and fragmentation are enabled. Databases are stored in the dbspace that is chosen by the server. Tables are fragmented among dbspaces that are chosen by the server. More fragments are added when tables grow.

The default logging mechanism for the wire listener is Logback. Logback is pre-configured and installed along with the JSON components.

This graphic depicts the MongoDB clients that connect to the HCL OneDB server through the wire listener.