[JENA-863] Custom builtin which does support firing a head-action on a remove

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: Jena 2.12.1
• Fix Version/s: Jena 2.13.0
• Component/s: Jena, Reasoners
• Labels: patch
• Assignee: Unassigned
• Reporter: Sébastien Boulet
• Created: 26/Jan/15 13:25
• Updated: 26/Jan/15 14:11

Description

Allow the creation of custom Builtin which its notified on a remove.

We have created an interface: ReversibleBuiltIn

com.hp.hpl.jena.reasoner.rulesys.ReversibleBuiltIn

package com.hp.hpl.jena.reasoner.rulesys;

import com.hp.hpl.jena.graph.Node;

public interface ReversibleBuiltIn extends Builtin {
    public void reverseHeadAction(Node[] args, int length, RuleContext context);
}

reverseHeadAction is invoked by the RETEConflictSe::execute