Welcome
Runtimes
Descriptions of Link runtime services.
SDK
The LNK programming interface includes language-specific methods and objects that provide common functionality across multiple environments.
C API
The C API enables applications to invoke maps and to develop adapters to use with HCL Link.
Loading, running, and controlling maps
There are various methods you can use to load, run, and control maps when you use APIs with HCL Link.
Loading and running maps
Use the following methods to load specific maps, refresh maps when the maps have changed, and run maps.
mpiMapUnload
The C API uses different methods to load, run, and control maps, including mpiMapUnload.

Introduction
Congratulations on your selection of HCL Link as your data integration solution!
What's new
Learn about the new and changed functions and features in HCL Link version 1.3.2.0.
Release notes
Read the latest release specific information for HCL Link version 1.3.2.0.
System requirements
A complete desciption of the hardware and software requirements for both Windows and Linux systems.
Installation
Everything you need to know to install HCL Link.
Administration
Here you will find the tasks that are required for administration of your HCL Link product.
Projects
A project is a container for HCL Link artifacts.
Services
Service definitions define REST services and the endpoints of a service. This guide provides step-by-step instructions for creating, importing, and managing services using the system interface, following Microsoft standards.
Connectors
This documentation describes the connectors and how they are used.
Packages
Servers
This documentation contains a description of the server groups and servers.
Variables
The variables described here include Configuration variables, flow variables, and cache variables.
Dashboards
A description of HCL Link dashboards, including the Server dashboard and the Kibana dashboard.
Runtimes
Descriptions of Link runtime services.
- REST API
  The REST Runtime provides a REST API used to run maps and flows that have been deployed.
- Flow Command Server
  Deploy a flow from the HCL Link to the local filesystem using Execution flow server definition.
- Map Command Server
  To use the Map Command Server to execute a map, you will prepare the maps for execution.
- SDK
  The LNK programming interface includes language-specific methods and objects that provide common functionality across multiple environments.
  - Link programming interface overview
    The Link programming interface is an object-oriented approach that enables applications to invoke HCL Link maps, thus removing reliance on command lines.
  - C API
    The C API enables applications to invoke maps and to develop adapters to use with HCL Link.
    - C API interface methods overview
      The map, card, and adapter object properties define the properties that can be set for each object. Use the C API interface methods to GET or SET the adapter object properties.
    - Object methods
    - Loading, running, and controlling maps
      There are various methods you can use to load, run, and control maps when you use APIs with HCL Link.
      - Loading and running maps
        Use the following methods to load specific maps, refresh maps when the maps have changed, and run maps.
        mpiMapLoadFile
        The C API uses different methods to load, run, and control maps, including mpiMapLoadFile.
        mpiMapLoadMemory
        The C API uses different methods to load, run, and control maps, including mpiMapLoadMemory.
        mpiMapRefresh
        The C API uses different methods to load, run, and control maps, including mpiMapLoadRefresh.
        mpiMapReloadFile
        The C API uses different methods to load, run, and control maps, including mpiMapReloadFile.
        mpiMapReloadMemory
        The C API uses different methods to load, run, and control maps, including mpiMapReloadMemory.
        mpiMapRun
        The C API uses different methods to load, run, and control maps, including mpiMapRun.
        mpiMapUnload
        The C API uses different methods to load, run, and control maps, including mpiMapUnload.
      - Controlling and monitoring maps
        These methods allow map execution to be controlled from another thread and to report map progress.
      - Initialization and termination methods
        The following methods initialize the environment required for running maps and clean up the environment after the map run is complete.
      - Callbacks
        An API application uses callback to receive logging messages on a per-map basis or for global logging based on HCL Link initialization.
      - C API examples
        The examples included with the C API are located in the following directory: install_dir\examples\dk\dtxpi\c
    - Custom adapters
      The custom adapters interface makes it possible for users to develop adapters with as much functionality as those provided with the product.
  - Python API
    Use the Python API to create, edit, and run maps and schemas from a Python program. For details, see the documentation installed in install_dir/python/api/hip/docs/html/index.html. Examples of the Python API are installed in install_dir/python/api/examples. Documentation for the Python API examples is available in install_dir/python/api/docs/html/examples.html.
  - Java API
    The Java API interfaces enable you to create, edit, and run maps and schemas from a Java™ program.
  - Java Tools
    The Java™ Tools provide objects and JNI utilities that you can use to get information about your map instances.
Resource Adapters
About the HCL Link Resource Adapters, and how to use them.
Cloud Native Link
Cloud Native Link refers to the HCL Link product installation on a Kubernetes cluster.
Reference
This documentation provides HCL Link reference information.
Notices

mpiMapUnload

The C API uses different methods to load, run, and control maps, including mpiMapUnload.

MPIRC mpiMapUnload (HMPIMAP  *hMap)

Inputs

hMap: Map object

Outputs

None

Returns

Success status