Package com.norconex.importer.handler.tagger.impl

Class ConstantTagger

  • All Implemented Interfaces:
    IXMLConfigurable, IImporterHandler, IDocumentTagger
    public class ConstantTagger
extends AbstractDocumentTagger

    Define and add constant values to documents. To add multiple constant values under the same constant name, repeat the constant entry with a different value.

    Storing values in an existing field

    If a target field with the same name already exists for a document, values will be added to the end of the existing value list. It is possible to change this default behavior with setOnSet(PropertySetter).

    Can be used both as a pre-parse or post-parse handler.

    XML configuration usage:

    
<handler
    class="com.norconex.importer.handler.tagger.impl.ConstantTagger">
  <!-- multiple "restrictTo" tags allowed (only one needs to match) -->
  <restrictTo>
    <fieldMatcher>(field-matching expression)</fieldMatcher>
    <valueMatcher>(value-matching expression)</valueMatcher>
  </restrictTo>
  <!-- multiple constant tags allowed -->
  <constant
      name="CONSTANT_NAME">
    Constant Value
  </constant>
</handler>

    XML usage example:

    
<handler
    class="ConstantTagger">
  <constant
      name="source">
    web
  </constant>
</handler>

    The above example adds a constant to incoming documents to identify they were web documents.

    Author:
    Pascal Essiembre