平面地图

将单个输入记录映射到一个或多个输出记录。

Redis 堆栈 
public <I extends java.io.Serializable> GearsBuilder<I> flatMap​(
	gears.operations.FlatMapOperation<T,​I> flatmapper)

Maps a single input record to one or more output records.

The FlatMap operation must return an Iterable. RedisGears splits the elements from the Iterable object and processes them as individual records.

Parameters

Type parameters:

Name Description
I The template type of the returned builder object

Function parameters:

Name Type Description
flatmapper FlatMapOperation<T,​I> For each input record, returns one or more output records

Returns

Returns a GearsBuilder object with a new template type.

Example

GearsBuilder.CreateGearsBuilder(reader).flatMap(r->{
   	return r.getListVal();
});
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