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`invoke_domain_query`¶

Resolves a question using the matching top-level <query> in the active DDD.

<invoke_domain_query type="wh_question" predicate="greeting"/>

Attributes, children, and placement¶

Attribute	Meaning
`type`	Question type; defaults to `wh_question`.
`predicate`	Predicate for a predicate-backed question.

Question content follows the shared question syntax; the item has no plan-item-specific children. It can appear in a plan, postplan, or conditional branch.

Behavior and usage¶

The DME sends the question to the currently active domain, which selects the matching top-level <query>. Tala 31.0.1 sets both result bounds to one for this item. Use it for answers declared in the DDD; use invoke_service_query for an external operation.

<goal type="resolve" question_type="wh_question" predicate="price">
  <plan>
    <invoke_domain_query type="wh_question" predicate="price"/>
  </plan>
</goal>

An enumerating query restarts after its last item. Use has_more_items to detect exhaustion and reset_domain_query to explicitly restart its state. See Domain queries.