import org.apache.flink.api.common.state.valuestatedescriptor
import org.apache.flink.api.scala.typeutils.types
import org.apache.flink.streaming.api.timecharacteristic
import org.apache.flink.streaming.api.functions.co.coprocessfunction
import org.apache.flink.streaming.api.scala.
import org.apache.flink.util.collector
/** * 場景：實時對賬
*/object twostreamjoin
//泛型：第一條流 第二條流 輸出
class machfuction extends coprocessfunction[orderevent, payevent, string] else
}//處理支付流的資料
override def processelement2(pay: payevent, ctx: coprocessfunction[orderevent, payevent, string]#context, out: collector[string]): unit = else
}override def ontimer(timestamp: long, ctx: coprocessfunction[orderevent, payevent, string]#ontimercontext, out: collector[string]): unit =
if (orderstate.value() != null) }}
}
對賬成功---> 訂單id為order_1的訂單對賬成功對賬成功---> 訂單id為order_2的訂單對賬成功
訂單未到-----> 訂單是order_3對賬失敗
支付未到-----> 訂單是order_5對賬失敗
支付未到-----> 訂單是order_6對賬失敗
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