Merge result extension
Expansion Description
Merge returns results for grouping and aggregation.
Extension ports
org.apache.dubbo.rpc.cluster.Merger
Extended configuration
<dubbo:method merger="xxx" />
Known extensions
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
Extended example
Maven project structure:
src
|-main
|-java
|-com
|-xxx
|-XxxMerger.java (implement Merger interface)
|-resources
|-META-INF
|-dubbo
|-org.apache.dubbo.rpc.cluster.Merger (plain text file, content: 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
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Last modified January 2, 2023: Enhance en docs (#1798) (95a9f4f6c1)