io.github.dddplus.model

接口 IMergeAwareDirtyHint<ID extends Serializable>

类型参数:

ID - 该hint的唯一标识

所有超级接口:

IdentifiableDomainObject<ID>, IDirtyHint

public interface IMergeAwareDirtyHint<ID extends Serializable>
extends IDirtyHint, IdentifiableDomainObject<ID>

可以合并的脏数据提示.

Example:

 

 public class OrderDirtyHint implements IMergeAwareDirtyHint<Long> {
     private static int BITS = 8;
     public enum Type {
         Type1(0),
         Type2(1),
         Type3(2);
         int bit;

         BitSet dirtyMap() {
             BitSet s = new BitSet(BITS);
             s.set(bit);
             return s;
         }
     }

     private final BitSet dirtyMap = new BitSet(BITS);
     private final Order order;
     private BigDecimal price;

     public OrderDirtyHint(Order order, Type type) {
         this.order = order;
         this.dirtyMap.set(type.bit);
     }

     public boolean has(Type type) {
         return dirtyMap.intersects(type.dirtyMap());
     }

     public void onMerge(IDirtyHint thatHint) {
         OrderDirtyHint that = (OrderDirtyHint) thatHint;
         that.dirtyMap.or(dirtyMap);
         if (price != null) {
             that.price = price;
         }
     }

     public Long getId() {
         return order.getId();
     }
 }

 
 

方法概要

限定符和类型	方法和说明
default void	onMerge(IDirtyHint thatHint) Merge预留的hook.

从接口继承的方法 io.github.dddplus.model.IdentifiableDomainObject

getId

方法详细资料

onMerge

default void onMerge(IDirtyHint thatHint)

Merge预留的hook.

注意：合并过程中要改变状态，要改变thatHint入参的状态，而不是改变this

参数:

thatHint - DirtyMemento里现存的该hint