[UIMA-6200] Constructing aggregate engines is slow

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.11.0SDK, 3.2.0SDK
• Component/s: Core Java Framework
• Assignee: Richard Eckart de Castilho
• Reporter: Richard Eckart de Castilho
• Created: 15/Mar/20 17:51
• Updated: 04/May/20 10:33
• Resolved: 04/May/20 10:33

Description

Creating an aggregate engine is slow because every time a default fixed flow descriptor is loaded from the classpath as XML and parsed.

FixedFlowController

  public static FlowControllerDescription getDescription() {
    URL descUrl = FixedFlowController.class
            .getResource("/org/apache/uima/flow/FixedFlowController.xml");
    FlowControllerDescription desc;
    try {
      desc = (FlowControllerDescription) UIMAFramework.getXMLParser().parse(
              new XMLInputSource(descUrl));
    } catch (InvalidXMLException e) {
      throw new UIMARuntimeException(e);
    } catch (IOException e) {
      throw new UIMARuntimeException(e);
    }
    return desc;
  }

IMHO, this should be loaded once and then cached permanently - or be constructed completely programmatically (also once!) and never loaded at all.

Issue Links

• links to: GitHub Pull Request #37