Salesforce Trigger Handler 接口

Trigger 接口

Trigger 接口
public class Triggers {
    /**
        Enum representing each of before/after CRUD events on Sobjects
    */
    public enum Evt {
        afterdelete, afterinsert, afterundelete,
        afterupdate, beforedelete, beforeinsert, beforeupdate   
    }
    
    /**
        Simplistic handler to implement on any of the event. It doesn't requires or enforces any patter except the
        method name to be "handle()", a developer is free to use any Trigger context variable or reuse any other
        apex class here.
    */
    public interface Handler {
        void handle();          
    } 
    
    // Internal mapping of handlers
    Map<String, List<Handler>> eventHandlerMapping = new Map<String, List<Handler>>();
    
    /**
        Core API to bind handlers with events
    */
    public Triggers bind(Evt event, Handler eh) {
        List<Handler> handlers = eventHandlerMapping.get(event.name())