ConnectorLib Java 25.1
ConnectorLib Java SDK Programming Guide

# Ingest Result Handlers

When you ingest a document using the `Add`, `Replace`, `Remove` or `Update` methods, the ingest command is placed in a queue and the method returns immediately. ConnectorLib Java takes care of batching, sending the commands, and dealing with any transitory problems communicating with the target.

As a result, the `Add`, `Replace`, `Remove` and `Update` methods never fail, even if there is a problem ingesting a document. To find out whether each document was ingested successfully, you can register an Ingest result handler:

           task.getIngester().addResultHandler(
                     resultHandlerObject,
                     "handlerMethodName");

The result handler is called whenever a document is successfully ingested or when ingestion fails for a document. A simple result handler is shown here:

    public static class IngestResultHandler
    {
         private final SynchronizeTask task;

         public IngestResultHandler(SynchronizeTask task)
         {
              this.task = task;
         }

         public void handler(DocInfo docInfo, Ingester.TaskType type, boolean success)
         {
              if (success)
              {
                   task.getLog().writeln(Log.NORMAL, "Document "
                           + docInfo.getDoc().getReference()
                           + " ingest " + type + " succeeded!");
              }
              else
              {
                   task.getLog().writeln(Log.ERROR, "Ingestion failed for "
                           + docInfo.getDoc().getReference());
              }
         }
    }

Ingest result handlers are useful when you want to update state information only when documents are ingested successfully. An example of a connector using an ingest result handler for this purpose is included in Make an Incremental Synchronize Action.

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Version 25.1 | Last updated January 2025

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Product: Knowledge Discovery ConnectorLib Java 25.1

Topic Title: Ingest Result Handlers