45 lines
793 B
Java
45 lines
793 B
Java
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package com.yem.wm.utils.groupfunc;
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import kd.bos.algo.CustomAggFunction;
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import kd.bos.algo.DataType;
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/**
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* 取首行函数构造器
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* @description:实现groupBy自定义聚合函数
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* @author longh
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* @date 2022年4月19日 上午11:14:41
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*/
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public class GroupTopOneFunction extends CustomAggFunction<Object> {
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public GroupTopOneFunction() {
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super("GroupTopOneFunction", DataType.AnyType);
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}
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@Override
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public Object newAggValue() {
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return null;
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}
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@Override
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public Object addValue(Object arg0, Object arg1) {
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if(arg0 == null) {
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arg0 = arg1;
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}
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return arg0;
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}
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@Override
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public Object combineAggValue(Object arg0, Object arg1) {
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if(arg0 == null) {
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arg0 = arg1;
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}
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return arg0;
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}
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@Override
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public Object getResult(Object arg0) {
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return arg0;
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}
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}
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