Apache Flink CEP学习总结

一. 什么是复杂事件处理(CEP)？

官方原文： It allows you to detect event patterns in an endless stream of events, giving you the opportunity to get hold of what’s important in your data.
作者理解：简单来说，复杂事件处理就是对行为数据书进行一系列规则匹配。匹配规则即模式，数据命中模式后再对数据进行处理。比如打车的一个完整行程：乘客发起订单—司机接单—乘客上车—送至目的地—乘客支付成功。每个单元即是一个模式。一系列模式联合即是复杂事件处理。

二. 复杂事件处理(CEP)运用的场景

1.异常行为检测：信用卡在短时间内，不同的区域进行消费。
2.运营决策：同种商品浏览多家店铺，针对这种价格敏感型用户，进行消费券赠送。
3.预警监控：对于卡单需求，半日达配送场景中，从物流接收–配送–站点–最后一公里，针对于每一个场景进行监控，一旦某个场景超时，便进行预警。另外可以对集群的健康状态进行一个监控等等。

三. 官方用例

1.maven依赖

<dependency>
  <groupId>org.apache.flink</groupId>
  <artifactId>flink-cep_2.11</artifactId>
  <version>1.10.0</version>
</dependency>

2.官方的demo

DataStream<Event> input = ...

Pattern<Event, ?> pattern = Pattern.<Event>begin("start").where(
        new SimpleCondition<Event>() {
            @Override
            public boolean filter(Event event) {
                return event.getId() == 42;
            }
        }
    ).next("middle").subtype(SubEvent.class).where(
        new SimpleCondition<SubEvent>() {
            @Override
            public boolean filter(SubEvent subEvent) {
                return subEvent.getVolume() >= 10.0;
            }
        }
    ).followedBy("end").where(
         new SimpleCondition<Event>() {
            @Override
            public boolean filter(Event event) {
                return event.getName().equals("end");
            }
         }
    );

PatternStream<Event> patternStream = CEP.pattern(input, pattern);

DataStream<Alert> result = patternStream.process(
    new PatternProcessFunction<Event, Alert>() {
        @Override
        public void processMatch(
                Map<String, List<Event>> pattern,
                Context ctx,
                Collector<Alert> out) throws Exception {
            out.collect(createAlertFrom(pattern));
        }
    });

四. 实战经验

1.需求描述：

A.从20000020（服务单创建）点获取服务单数据，筛选服务类型srvtype值为ZS04（拆机服务）的，取到srvtime预计服务时间。
B.用asomorderitemid（服务单行号）作为关联主键去匹配服务改期点20000028或20000029，匹配到任意，看该点改期后的预计服务时间servicetime是否比原预计服务时间超过10天以外，如果超过，则直接剔除此单；如果未超过，则将预计服务时间刷新为改期后的预计服务时间进行后续逻辑。
C.去匹配服务完成20000031或服务取消20000033点，在【servicetime时间点+考核阈值时间Y3】 之前能关联上20000031或20000033，则表示按时销单了，剔除。如果在【servicetime时间点+考核阈值时间Y3】前没有匹配上20000031或20000033，则表示此单没有按时销单，保留并传给妙星系统。

数据实例

{"data":{"faultCodeDes":"","cmmdtyLvl":"000030761","machineFaultCode":"","omsOrderItemId":"00168722537501","status_code":"E0001","orderChangeReason":"","cmmdtyCode":"000000011066187508","customerNum":"7252486826","changeId":"","serviceTime":"2019-10-18 01:00:30","asomOrderId":"1000168722537501","mobPhoneNum":"17160912141","asomOrderItemId":"9110374270A","qualityMark":"0","srv_memo":"","cmmdtyCtgry":"R0503002","srv_type":"ZS01","proName":"01","first_srv_time":"2020-03-07 18:00:00"},"id":"20000028","ip":"10.96.30.1","time":"20200304000056352"}
{"data":{"srv_org_dec":"1500杭州苏宁","omsOrderItemId":"00454837299501","orderSource":"B2C","status_code":"E0001","consignee":"葛琳","abnormal_type":"0","srvMemo":"","serviceTime":"2019-10-18 01:00:24","asomOrderId":"1000454837299501","srv_address":"0;;杭州市;拱墅区;全区;;;;中国铁建国际城4-3-1302","asomOrderItemId":"9110374270A","mem_card_id":"6052543414","abnormal_time":"","city_name":"杭州市","cmmdty_ctgry":"R0503002","company_name":"1500杭州大区","srv_type":"ZS04","phone_num":"13958081010","company_code":"1500","mob_phone_num":"13958081010","srv_org":"O 10003878"},"id":"2","ip":"10.96.20.196","time":"20200304000005658"}
{"data":{"srv_org_dec":"1500杭州苏宁","omsOrderItemId":"00454837299501","orderSource":"B2C","status_code":"E0001","consignee":"葛琳","abnormal_type":"0","srvMemo":"","serviceTime":"2019-10-18 01:00:28","asomOrderId":"1000454837299501","srv_address":"0;;杭州市;拱墅区;全区;;;;中国铁建国际城4-3-1302","asomOrderItemId":"9110374270A","mem_card_id":"6052543414","abnormal_time":"","city_name":"杭州市","cmmdty_ctgry":"R0503002","company_name":"1500杭州大区","srv_type":"ZS04","phone_num":"13958081010","company_code":"1500","mob_phone_num":"13958081010","srv_org":"O 10003878"},"id":"20000020","ip":"10.96.20.196","time":"20200304000005658"}
{"data":{"zzcustomer_h0612":"","fix_code":"","zzcustomer_h0632":"","status_code":"E0028","zzcustomer_h0630":"","zzwjh":"","zzcustomer_h0631":"","zzssje":"","job_sit_new":"0000964211","zyry1_bp":"RY00134212","nvoice_no":"","zzysje":"0","account_object":"","srv_compie_time":"","fault_code_des":"","fix_code_des":"","zznjh":"","customer_code":"10136611","zzcustomer_h0614":"","omsOrderItemId":"00453909587501","arrival_time":"","provide_use7":"","sales_date":"2020-02-22 15:19:32","zzqtsx8":"","yb_sales_order":"","serviceTime":"2019-10-18 01:00:35","srv_card_id":"","asomOrderId":"1000453909587501","asomOrderItemId":"9110374270A","srv_memo":"","sales_store":"9403","srv_type":"ZS01","zzxdje":"0","zzcustomer_h0629":"","zzqtsx2":"","fault_code":"","job_sit_name_new":"JMJM澄海宇翔","zzcustomer_h0626":"","zzqtsx1":""},"id":"20000031","ip":"10.96.46.185","time":"20200304000248"}
{"data":{"srv_org_dec":"1500杭州苏宁","omsOrderItemId":"00454837299501","orderSource":"B2C","status_code":"E0001","consignee":"葛琳","abnormal_type":"0","srvMemo":"","serviceTime":"2019-10-18 01:00:45","asomOrderId":"1000454837299501","srv_address":"0;;杭州市;拱墅区;全区;;;;中国铁建国际城4-3-1302","asomOrderItemId":"9110374270A","mem_card_id":"6052543414","abnormal_time":"","city_name":"杭州市","cmmdty_ctgry":"R0503002","company_name":"1500杭州大区","srv_type":"ZS04","phone_num":"13958081010","company_code":"1500","mob_phone_num":"13958081010","srv_org":"O 10003878"},"id":"5","ip":"10.96.20.196","time":"20200304000005658"}
{"data":{"srv_org_dec":"1500杭州苏宁","omsOrderItemId":"00454837299501","orderSource":"B2C","status_code":"E0001","consignee":"葛琳","abnormal_type":"0","srvMemo":"","serviceTime":"2019-10-18 02:00:00","asomOrderId":"1000454837299501","srv_address":"0;;杭州市;拱墅区;全区;;;;中国铁建国际城4-3-1302","asomOrderItemId":"9110374270A","mem_card_id":"6052543414","abnormal_time":"","city_name":"杭州市","cmmdty_ctgry":"R0503002","company_name":"1500杭州大区","srv_type":"ZS04","phone_num":"13958081010","company_code":"1500","mob_phone_num":"13958081010","srv_org":"O 10003878"},"id":"6","ip":"10.96.20.196","time":"20200304000005658"}

2.代码示例

        // 定义数据延时时间
        final long delay = 5 * 1000L;
        final OutputTag<String> outputTag = new OutputTag<String>("side-output") {
        };
        final StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

        env.setParallelism(2);
        // 设置event time
        env.setStreamTimeCharacteristic(TimeCharacteristic.EventTime);

        Properties orderProp = new Properties();
        orderProp.setProperty("bootstrap.servers", Configuration.getString("order.bootstrap.servers"));
        orderProp.setProperty("zookeeper.connect", Configuration.getString("order.zookeeper.connect"));
        orderProp.setProperty("fetch.message.max.bytes", "10485760");
        orderProp.setProperty("group.id", Configuration.getString("order.group.id"));
        FlinkKafkaConsumer08<String> source = new FlinkKafkaConsumer08<>(Configuration.getString("dtm.order.links"), new SimpleStringSchema(), orderProp);

数据预处理部分：

        DataStream<Event> input = env
                .addSource(source)
                .filter(new MessageHandle.DataFilter())
                .map((MapFunction<String, Event>) message -> {

                    Event event = new Event();
                    JSONObject pointMsg = JSON.parseObject(message);

                    String id = pointMsg.getString("id");
                    JSONObject data = pointMsg.getJSONObject("data");
                    String asomOrderItemId = data.getString("asomOrderItemId");
                    String srvType = data.getString("srv_type");
                    String serviceTime = data.getString("serviceTime");

                    event.setAsomOrderItemId(asomOrderItemId);
                    event.setServiceTime(serviceTime);
                    event.setSrvType(srvType);
                    event.setId(id);

                    return event;

                });

其中实体类部分

/**
 * @author 18074935 XU.MIN
 * @date 2020/4/7 11:05
 */
public class Event {

    private String srvType;
    private String serviceTime;
    private String asomOrderItemId;
    private String id;

    public String getSrvType() {
        return srvType;
    }

    public void setSrvType(String srvType) {
        this.srvType = srvType;
    }

    public String getServiceTime() {
        return serviceTime;
    }

    public void setServiceTime(String serviceTime) {
        this.serviceTime = serviceTime;
    }

    public String getAsomOrderItemId() {
        return asomOrderItemId;
    }

    public void setAsomOrderItemId(String asomOrderItemId) {
        this.asomOrderItemId = asomOrderItemId;
    }


    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public void Event() {

    }
}

指定水位：

        KeyedStream<Event, String> watermark = input
                .assignTimestampsAndWatermarks(
//                        new AscendingTimestampExtractor<Event>() {
//                            @Override
//                            public long extractAscendingTimestamp(Event event) {
//                                String serviceTime = event.getServiceTime();
//                                SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss SSS");
//                                long timestamp = 0L;
//                                try {
//                                    Date date = format.parse(serviceTime);
//                                    timestamp = date.getTime();
//                                } catch (ParseException e) {
//                                    e.printStackTrace();
//                                }
//                                return timestamp;
//                            }
//                        }
                        new AssignerWithPeriodicWatermarks<Event>() {
                            private final long maxOutOfOrderness = delay;
                            private long currentMaxTimestamp = 0L;

                            @Override
                            public Watermark getCurrentWatermark() {
                                return new Watermark(currentMaxTimestamp - maxOutOfOrderness);
                            }

                            @Override
                            public long extractTimestamp(Event element, long previousElementTimestamp) {
                                String serviceTime = element.getServiceTime() + " 000";
                                SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss SSS");
                                long timestamp = 0L;
                                try {
                                    Date date = format.parse(serviceTime);
                                    timestamp = date.getTime();
                                    currentMaxTimestamp = Math.max(timestamp, currentMaxTimestamp);
                                    System.out.println("***" + format.format(getCurrentWatermark().getTimestamp()) + "****" + element.getId() + "***");
                                } catch (ParseException e) {
                                    e.printStackTrace();
                                }
                                return timestamp;
                            }
                        })
                .keyBy((KeySelector<Event, String>) Event::getAsomOrderItemId);

模式编写：

        Pattern<Event, ?> pattern = Pattern.<Event>begin("start").where(
                new SimpleCondition<Event>() {
                    @Override
                    public boolean filter(Event event) {
                        System.out.println("start" + event.getId());
                        return (StringUtils.equals(event.getSrvType(), "ZS04") && StringUtils.equals(event.getId(), "20000020"));
                    }
                }
        ).followedBy("middle").where(
                new SimpleCondition<Event>() {
                    @Override
                    public boolean filter(Event event) {
                        System.out.println("middle" + event.getId());
                        return (StringUtils.equals(event.getId(), "20000028") || StringUtils.equals(event.getId(), "20000029"));
                    }
                }
        ).followedBy("end").where(
                new IterativeCondition<Event>() {
                    @Override
                    public boolean filter(Event event, Context<Event> context) throws Exception {

                        if (StringUtils.equals(event.getId(), "20000031") || StringUtils.equals(event.getId(), "20000033")) {
                            System.out.println("end" + event.getId());
                            String finishTime = event.getServiceTime();
                            String changeTime = "";

                            for (Event e : context.getEventsForPattern("middle")) {
                                if (e.getServiceTime().compareTo(changeTime) > 0) {
                                    changeTime = e.getServiceTime();
                                }
                            }

                            return finishTime.compareTo(changeTime) > 0;
                        }
                        return false;
                    }
                }
        ).within(Time.minutes(30L));

指定模式,同时，可以指定模式匹配的策略。

PatternStream<Event> patternStream = CEP.pattern(watermark, pattern);

对匹配的数据进行处理：

        DataStream<String> result = patternStream.process(
                new PatternProcessFunction<Event, String>() {
                    @Override
                    public void processMatch(
                            Map<String, List<Event>> pattern,
                            Context ctx,
                            Collector<String> out) throws Exception {


                        out.collect(pattern.toString());
                    }
                });

如果需要对超时数据进行处理，如下：

        SingleOutputStreamOperator<String> flatResult = patternStream.select(
                outputTag,
                new PatternTimeoutFunction<Event, String>() {
                    @Override
                    public String timeout(Map<String, List<Event>> map, long l) throws Exception {
                        JSONObject output = new JSONObject();
                        for (String key : map.keySet()) {

                            JSONArray collect = new JSONArray();
                            for (Event event : map.get(key)) {

                                collect.add(event.getId());
                            }
                            output.put(key, collect);
                        }
                        return output.toString();
                    }
                },
                new PatternSelectFunction<Event, String>() {
                    @Override
                    public String select(Map<String, List<Event>> map) throws Exception {

                        JSONObject output = new JSONObject();

                        for (String key : map.keySet()) {
                            JSONArray collect = new JSONArray();
                            for (Event event : map.get(key)) {

                                collect.add(event.getId());
                            }
                            output.put(key, collect);
                        }
                        return output.toString();
                    }
                }
        );

超时数据以及正常匹配数据输出：

        DataStream<String> timeoutFlatResult = flatResult.getSideOutput(outputTag);
        timeoutFlatResult.print();
        flatResult.print();

特别说明，在如下的模式中，如果input属于non-keyed stream，后面的算子并行度为1，水位根据设定的水位顺序增长。如果设置keyBy之后，水位则为每个并行度的水位。
其中水位取值符合不同并行度水位取最小数位，同一并行度取水位最大为原则。

PatternStream<Event> patternStream = CEP.pattern(input, pattern, comparator);

整体代码如下

package com.suning.flink.starter;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.suning.flink.function.MessageHandle;
import com.suning.flink.util.Configuration;
import org.apache.commons.lang.StringUtils;
import org.apache.flink.api.common.functions.MapFunction;
import org.apache.flink.api.java.functions.KeySelector;
import org.apache.flink.cep.CEP;
import org.apache.flink.cep.PatternSelectFunction;
import org.apache.flink.cep.PatternStream;
import org.apache.flink.cep.PatternTimeoutFunction;
import org.apache.flink.cep.pattern.Pattern;
import org.apache.flink.cep.pattern.conditions.IterativeCondition;
import org.apache.flink.cep.pattern.conditions.SimpleCondition;
import org.apache.flink.streaming.api.TimeCharacteristic;
import org.apache.flink.streaming.api.datastream.DataStream;
import org.apache.flink.streaming.api.datastream.KeyedStream;
import org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.functions.AssignerWithPeriodicWatermarks;
import org.apache.flink.streaming.api.watermark.Watermark;
import org.apache.flink.streaming.api.windowing.time.Time;
import org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer08;
import org.apache.flink.streaming.util.serialization.SimpleStringSchema;
import org.apache.flink.util.OutputTag;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Properties;

/**
 * @author 18074935 XU.MIN
 * @date 2020/4/7 11:00
 */
public class LogisticsAbnormalCEPdeal {
    public static void main(String[] args) throws Exception {

        final long delay = 5 * 1000L;
        final OutputTag<String> outputTag = new OutputTag<String>("side-output") {
        };
        final StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

        env.setParallelism(2);
        env.setStreamTimeCharacteristic(TimeCharacteristic.EventTime);

        Properties orderProp = new Properties();
        orderProp.setProperty("bootstrap.servers", Configuration.getString("order.bootstrap.servers"));
        orderProp.setProperty("zookeeper.connect", Configuration.getString("order.zookeeper.connect"));
        orderProp.setProperty("fetch.message.max.bytes", "10485760");
        orderProp.setProperty("group.id", Configuration.getString("order.group.id"));
        FlinkKafkaConsumer08<String> source = new FlinkKafkaConsumer08<>(Configuration.getString("dtm.order.links"), new SimpleStringSchema(), orderProp);

        source.setStartFromLatest();

        DataStream<Event> input = env
                .addSource(source)
                .filter(new MessageHandle.DataFilter())
                .map((MapFunction<String, Event>) message -> {

                    Event event = new Event();
                    JSONObject pointMsg = JSON.parseObject(message);

                    String id = pointMsg.getString("id");
                    JSONObject data = pointMsg.getJSONObject("data");
                    String asomOrderItemId = data.getString("asomOrderItemId");
                    String srvType = data.getString("srv_type");
                    String serviceTime = data.getString("serviceTime");

                    event.setAsomOrderItemId(asomOrderItemId);
                    event.setServiceTime(serviceTime);
                    event.setSrvType(srvType);
                    event.setId(id);

                    return event;

                });

        KeyedStream<Event, String> watermark = input
                .assignTimestampsAndWatermarks(
//                        new AscendingTimestampExtractor<Event>() {
//                            @Override
//                            public long extractAscendingTimestamp(Event event) {
//                                String serviceTime = event.getServiceTime();
//                                SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss SSS");
//                                long timestamp = 0L;
//                                try {
//                                    Date date = format.parse(serviceTime);
//                                    timestamp = date.getTime();
//                                } catch (ParseException e) {
//                                    e.printStackTrace();
//                                }
//                                return timestamp;
//                            }
//                        }
                        new AssignerWithPeriodicWatermarks<Event>() {
                            private final long maxOutOfOrderness = delay;
                            private long currentMaxTimestamp = 0L;

                            @Override
                            public Watermark getCurrentWatermark() {
                                return new Watermark(currentMaxTimestamp - maxOutOfOrderness);
                            }

                            @Override
                            public long extractTimestamp(Event element, long previousElementTimestamp) {
                                String serviceTime = element.getServiceTime() + " 000";
                                SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss SSS");
                                long timestamp = 0L;
                                try {
                                    Date date = format.parse(serviceTime);
                                    timestamp = date.getTime();
                                    currentMaxTimestamp = Math.max(timestamp, currentMaxTimestamp);
                                    System.out.println("***" + format.format(getCurrentWatermark().getTimestamp()) + "****" + element.getId() + "***");
                                } catch (ParseException e) {
                                    e.printStackTrace();
                                }
                                return timestamp;
                            }
                        })
                .keyBy((KeySelector<Event, String>) Event::getAsomOrderItemId);


        Pattern<Event, ?> pattern = Pattern.<Event>begin("start").where(
                new SimpleCondition<Event>() {
                    @Override
                    public boolean filter(Event event) {
                        System.out.println("start" + event.getId());
                        return (StringUtils.equals(event.getSrvType(), "ZS04") && StringUtils.equals(event.getId(), "20000020"));
                    }
                }
        ).followedBy("middle").where(
                new SimpleCondition<Event>() {
                    @Override
                    public boolean filter(Event event) {
                        System.out.println("middle" + event.getId());
                        return (StringUtils.equals(event.getId(), "20000028") || StringUtils.equals(event.getId(), "20000029"));
                    }
                }
        ).followedBy("end").where(
                new IterativeCondition<Event>() {
                    @Override
                    public boolean filter(Event event, Context<Event> context) throws Exception {

                        if (StringUtils.equals(event.getId(), "20000031") || StringUtils.equals(event.getId(), "20000033")) {
                            System.out.println("end" + event.getId());
                            String finishTime = event.getServiceTime();
                            String changeTime = "";

                            for (Event e : context.getEventsForPattern("middle")) {
                                if (e.getServiceTime().compareTo(changeTime) > 0) {
                                    changeTime = e.getServiceTime();
                                }
                            }

                            return finishTime.compareTo(changeTime) > 0;
                        }
                        return false;
                    }
                }
        ).within(Time.minutes(30L));


        watermark.map((MapFunction<Event, JSONObject>) event -> {

            JSONObject result = new JSONObject();
            result.put("id", event.getId());
            result.put("asomOrderItemId", event.getAsomOrderItemId());
            result.put("serviceTime", event.getServiceTime());
            result.put("srvType", event.getSrvType());
            result.put("第二次", "打印");
            return result;
        }).print();

        PatternStream<Event> patternStream = CEP.pattern(watermark, pattern);
//        DataStream<String> result = patternStream.process(
//                new PatternProcessFunction<Event, String>() {
//                    @Override
//                    public void processMatch(
//                            Map<String, List<Event>> pattern,
//                            Context ctx,
//                            Collector<String> out) throws Exception {
//
//
//                        out.collect(pattern.toString());
//                    }
//                });
        SingleOutputStreamOperator<String> flatResult = patternStream.select(
                outputTag,
                new PatternTimeoutFunction<Event, String>() {
                    @Override
                    public String timeout(Map<String, List<Event>> map, long l) throws Exception {
                        JSONObject output = new JSONObject();
                        for (String key : map.keySet()) {

                            JSONArray collect = new JSONArray();
                            for (Event event : map.get(key)) {

                                collect.add(event.getId());
                            }
                            output.put(key, collect);
                        }
                        return output.toString();
                    }
                },
                new PatternSelectFunction<Event, String>() {
                    @Override
                    public String select(Map<String, List<Event>> map) throws Exception {

                        JSONObject output = new JSONObject();

                        for (String key : map.keySet()) {
                            JSONArray collect = new JSONArray();
                            for (Event event : map.get(key)) {

                                collect.add(event.getId());
                            }
                            output.put(key, collect);
                        }
                        return output.toString();
                    }
                }
        );


        DataStream<String> timeoutFlatResult = flatResult.getSideOutput(outputTag);
        timeoutFlatResult.print();
        flatResult.print();

        env.execute("Flink CEP");
    }
}

Event实体类：

package com.suning.flink.starter;

/**
 * @author 18074935 XU.MIN
 * @date 2020/4/7 11:05
 */
public class Event {

    private String srvType;
    private String serviceTime;
    private String asomOrderItemId;
    private String id;

    public String getSrvType() {
        return srvType;
    }

    public void setSrvType(String srvType) {
        this.srvType = srvType;
    }

    public String getServiceTime() {
        return serviceTime;
    }

    public void setServiceTime(String serviceTime) {
        this.serviceTime = serviceTime;
    }

    public String getAsomOrderItemId() {
        return asomOrderItemId;
    }

    public void setAsomOrderItemId(String asomOrderItemId) {
        this.asomOrderItemId = asomOrderItemId;
    }


    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public void Event() {

    }
}