Nuclos event rule Status change (final): interface, StateChangeContext, structure, assignment in the server rule manager, example code (Java).

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Event - Status change (final)

Event rule „Status change (final)“: interface, context and an example – how to react to this Nuclos event.

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When does the rule fire?

This server-side rule runs after a successful status change. It can be assigned to a status model.

Structure

Skeleton of the rule class (the rule editor creates it automatically):

package org.nuclet.lager; 

import org.nuclos.api.rule.StateChangeFinalRule; 
import org.nuclos.api.context.StateChangeContext; 
import org.nuclos.api.annotation.Rule; 
import org.nuclos.api.exception.BusinessException; 

/** @name        
  * @description 
  * @usage       
  * @change      
*/

@Rule(name="Statuswechsel im Anschluss Lagerposition", description="Statuswechsel im Anschluss Lagerposition")
public class StatuswechselImAnschlussLagerposition implements StateChangeFinalRule {

    public void changeStateFinal(StateChangeContext context) throws BusinessException { 
    }
}

The context StateChangeContext provides the affected BusinessObject via context.getBusinessObject(...); the RuleContext functions (providers) are also available. A BusinessException aborts the operation.

Assignment

Assign it to the target via drag-and-drop in the server rule manager. Optionally restrict execution to a status or an action; control the order with the arrow buttons.

Example

package org.nuclet.company; 
 
import org.nuclos.api.annotation.Rule;
import org.nuclos.api.context.StateChangeContext;
import org.nuclos.api.exception.BusinessException;
import org.nuclos.api.provider.StatemodelProvider;
import org.nuclos.api.rule.StateChangeFinalRule;
 
/** @name        
  * @description 
  * @usage       
  * @change      
*/
 
@Rule(name="Auftrag beantragen", description="Prüfung und Weiterführung eines neuen Antrags")
public class Auftragbeantragen implements StateChangeFinalRule {
   public void changeStateFinal(StateChangeContext context) throws BusinessException { 
       
       Auftrag neuerAuftrag = context.getBusinessObject(Auftrag.class);
       
       // Wurde noch keine Auftragsnummer hinterlegt, kann der Auftrag nicht
       // ausgeführt werden. Wir brauchen eine weitere Prüfung
       if (neuerAuftrag.getAuftragsnr() == null) {
           // Neuer Status: Prüfen (Numeral 55)
           StatemodelProvider.changeState(neuerAuftrag, ProzessAuftragSM.State_55);
       }
       else {
           // Prüfung ok, neuer Status: beauftragt (Numeral 30)
           StatemodelProvider.changeState(neuerAuftrag, ProzessAuftragSM.State_30);
       }
    }  
}

Related pages

Server-side rules

Basics.

Öffnen →

Server rule manager

Assign.

Öffnen →

Rule execution order

Order.

Öffnen →