ConnectorLib Java 25.1
ConnectorLib Java SDK Programming Guide

# Extend ConnectorBase

To create a new connector you must create a class that extends the `com.autonomy.connector.ConnectorBase` class. For example:

    package myconnector;
    import com.autonomy.connector.*;

    public class HelloWorldConnector extends ConnectorBase
    {
        public HelloWorldConnector(Config config, Log log)
        {
            super("My Connector");
        }

        public void synchronize(SynchronizeTask task) throws Exception
        {
            String target = task.getTaskConfig().read("Target", "World");
            task.getLog().writeln(Log.NORMAL, "Hello " + target);
        }
    }

NOTE: As shown in the example above, any connector implementation must extend `ConnectorBase` and have a constructor that takes two arguments (a `Config` and a `Log`).

OpenText recommends that the `Config` instance provided to the constructor is used only from within the constructor and that a reference to this object is not kept. This configuration is generally only useful for global settings that change how the connector behaves as a whole. Configuration for tasks should be accessed using the configuration objects provided to each task implementation.

The instance of `Log` provided to the constructor can be used outside of the constructor, and writes to the connector's application log stream. It should not be used for logging that is specific to a task (such as `Synchronize`).

The implementation of `Synchronize` uses `task.``get` `TaskConfig``()` and `task.``get` `Log``()` which provide access to the configuration and log for the task.

The constructor of `ConnectorBase` is passed the string "My Connector". This is the name of the connector as it should be displayed to the user, and can be any string.

A Java source file with this sample code is provided in the SDK (`HelloWorldConnector.java`).

This very basic connector implements only the `synchronize` fetch action. Your class does not have to implement the `synchronize` action, and it could implement other actions such as `collect`, `view`, `update`, and `delete`.

The body of the `synchronize` method reads a configuration value and writes a log message. It reads the value of the `Target` configuration parameter (which has a default value of "World") and then writes it to the synchronize log at the normal log level.

Copyright 2024 Open Text
Version 25.1 | Last updated January 2025

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Product: Knowledge Discovery ConnectorLib Java 25.1

Topic Title: Extend ConnectorBase