合并返回结果,用于分组聚合。
扩展接口
org.apache.dubbo.rpc.cluster.Merger
扩展配置
<dubbo:method merger="xxx" />
已知扩展
org.apache.dubbo.rpc.cluster.merger.ArrayMerger
org.apache.dubbo.rpc.cluster.merger.ListMerger
org.apache.dubbo.rpc.cluster.merger.SetMerger
org.apache.dubbo.rpc.cluster.merger.MapMerger
org.apache.dubbo.rpc.cluster.merger.ByteArrayMerger
org.apache.dubbo.rpc.cluster.merger.CharArrayMerger
org.apache.dubbo.rpc.cluster.merger.ShortArrayMerger
org.apache.dubbo.rpc.cluster.merger.IntArrayMerger
org.apache.dubbo.rpc.cluster.merger.LongArrayMerger
org.apache.dubbo.rpc.cluster.merger.FloatArrayMerger
org.apache.dubbo.rpc.cluster.merger.DoubleArrayMerger
org.apache.dubbo.rpc.cluster.merger.BooleanArrayMerger
扩展示例
- Maven 项目结构:
src |-main |-java |-com |-xxx |-XxxMerger.java (实现Merger接口) |-resources |-META-INF |-dubbo |-org.apache.dubbo.rpc.cluster.Merger (纯文本文件,内容为:xxx=com.xxx.XxxMerger)
- XxxMerger.java:
package com.xxx; import org.apache.dubbo.rpc.cluster.Merger; public class XxxMerger<T> implements Merger<T> { public T merge(T... results) { // ... } }
- META-INF/dubbo/org.apache.dubbo.rpc.cluster.Merger:
xxx=com.xxx.XxxMerger
下一节:负责服务的注册与发现。