1. 扩展说明

合并返回结果,用于分组聚合。

2. 扩展接口

com.alibaba.dubbo.rpc.cluster.Merger

3. 扩展配置
<dubbo:method merger="xxx" />
4. 已知扩展
  • com.alibaba.dubbo.rpc.cluster.merger.ArrayMerger
  • com.alibaba.dubbo.rpc.cluster.merger.ListMerger
  • com.alibaba.dubbo.rpc.cluster.merger.SetMerger
  • com.alibaba.dubbo.rpc.cluster.merger.MapMerger
5. 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
                |-com.alibaba.dubbo.rpc.cluster.Merger (纯文本文件,内容为:xxx=com.xxx.XxxMerger)

XxxMerger.java

package com.xxx;

import com.alibaba.dubbo.rpc.cluster.Merger;

public class XxxMerger<T> implements Merger<T> {
    public T merge(T... results) {
        // ...
    }
}

META-INF/dubbo/com.alibaba.dubbo.rpc.cluster.Merger

xxx=com.xxx.XxxMerger

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