Headless Server Developer Manual / 5.1.8 HandlerSets Property

Headless Server Developer Manual / Version 2301

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5.1.8 HandlerSets Property

Using handler sets allows grouping and reusing handlers in different contexts. In order to achieve this goal the YAML way, one or more handlers are grouped into a list of handlers, that is a handler set.

Example:

handlerSets:
  text: &text_handlers
    - !Handler
      eventMatcher:  !Matcher {qname: *em}
      outputHandler: !ElementWriter {writeElement: true, writeCharacters: true }
    - !Handler
      eventMatcher:  !Matcher {qname: *strong}
      outputHandler: !ElementWriter {writeElement: true, writeCharacters: true }

The subsequent property 'text' is up to the author and may be named accordingly to the YAML rules.
The list of handlers is anchored to the alias 'text_handlers'.

Example: reuse '*text_handlers' for a named context

      contexts:
        - !Context
          name: headline
          defaultHandler:
            !Handler
            outputHandler: !ElementWriter {writeCharacters: true}
          handlers:
            - *text_handlers
      ...

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