Esper事件处理引擎_1_JavaBean 数据结构处理

官方地址：http://www.espertech.com

参考博客栏目 ：http://blog.csdn.net/column/details/esper.html

Esper 事件引擎栏目：http://blog.csdn.net/xiaohulunb/article/category/2436609

GitHub代码地址：https://github.com/xiaohulu/my_note/tree/master/src/main/java/com/framework_technology/esper

Esper技术简介：http://blog.csdn.net/mdj67887500/article/details/6892392

Maven、pom.xml

<dependency>            <groupId>com.espertech</groupId>            <artifactId>esper</artifactId>            <version>4.9.0</version>        </dependency>

POJO数据结构

package com.framework_technology.esper.event_type;import com.espertech.esper.client.*;import com.google.common.collect.Lists;import com.google.common.collect.Maps;import java.util.List;import java.util.Map;import java.util.Random;import java.util.UUID;/** * Created by IntelliJ IDEA. * User: wei.Li * Date: 14-7-28 * Time: 14:41 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * 目标1：当Person类型的事件中name为xiaohulu时，Esper能得到对应的age,children和address * 目标2：当Person类型的事件中name为xiaohulu时，Esper能得到对应的第二个孩子,家里的电话和家庭住址在哪条路上 */class Person {    public static final String CLASSNAME = Person.class.getName();    private String name;    private int age;    private List<Child> children;    private Map<String, Integer> phones;    private Address address;    /**     * @return 随机获取Person 对象     */    public static Person getRandomPerson() {        Random random = new Random();        String name = UUID.randomUUID().toString();        int age = random.nextInt(100);        List<Child> children = Child.getRandomChild(10);        Map<String, Integer> phones = Maps.newHashMap();        phones.put("home", 110);        phones.put("iphone", 120);        Address address = Address.getRandomAddress();        return new Person(name, age, children, phones, address);    }    /**     * @param name 对象的 name     * @return 随机获取Person 对象     */    public static Person getRandomPerson(String name) {        Person person = getRandomPerson();        person.setName(name);        return person;    }    Person(String name, int age, List<Child> children, Map<String, Integer> phones, Address address) {        this.name = name;        this.age = age;        this.children = children;        this.phones = phones;        this.address = address;    }    public void setName(String name) {        this.name = name;    }    public String getName() {        return name;    }    public int getAge() {        return age;    }    public List<Child> getChildren() {        return children;    }    public Child getChild(int index) {        return children.get(index);    }    public int getPhones(String name) {        return phones.get(name);    }    public Map<String, Integer> getPhones() {        return phones;    }    public Address getAddress() {        return address;    }    @Override    public String toString() {        return "Person{" +                "name='" + name + '\'' +                ", age=" + age +                ", children=" + children +                ", phones=" + phones +                ", address=" + address +                '}';    }}class Address {    private String road;    private String street;    private int houseNo;    /**     * @return 随机获取一个Address 对象     */    public static Address getRandomAddress() {        return new Address(UUID.randomUUID().toString(), UUID.randomUUID().toString(), (int) (Math.random() * 1000));    }    Address(String road, String street, int houseNo) {        this.road = road;        this.street = street;        this.houseNo = houseNo;    }    public String getRoad() {        return road;    }    public String getStreet() {        return street;    }    public int getHouseNo() {        return houseNo;    }    @Override    public String toString() {        return "Address{" +                "road='" + road + '\'' +                ", street='" + street + '\'' +                ", houseNo=" + houseNo +                '}';    }}class Child {    private String name;    private int sex;    /**     * @param num 获取对象的个数     * @return 随机获取num个Child 对象     */    public static List<Child> getRandomChild(int num) {        List<Child> childList = Lists.newArrayList();        num = num < 1 ? 10 : num;        for (int i = 0; i < num; i++) {            childList.add(new Child("child" + i, i));        }        return childList;    }    Child(String name, int sex) {        this.name = name;        this.sex = sex;    }    public String getName() {        return name;    }    public int getSex() {        return sex;    }    @Override    public String toString() {        return "Child{" +                "name='" + name + '\'' +                ", sex=" + sex +                '}';    }}/** * 执行测试 */public class POJO_EventType implements Runnable {    private static final EPServiceProvider defaultProvider = EPServiceProviderManager.getDefaultProvider();    private static final EPAdministrator epAdministrator = defaultProvider.getEPAdministrator();    private static final EPRuntime epRuntime = defaultProvider.getEPRuntime();    public static void main(String[] args) {        POJO_EventType pojoEventType = new POJO_EventType();        //当Person类型的事件中name为xiaohulu时，Esper能得到对应的age,children和address        //pojoEventType.getFiledByName();        //当Person类型的事件中name为xiaohulu时，Esper能得到对应的第二个孩子,家里的电话和家庭住址在哪条路上        pojoEventType.getFiledAndArrayIndexByName();    }    /**     * 当Person类型的事件中name为xiaohulu时，Esper能得到对应的age,children和address     * get...方法必须有     */    private void getFiledByName() {        final String epl = "select age,children,address from " + Person.CLASSNAME + " where name=\"xiaohulu\"";        EPStatement epStatement = epAdministrator.createEPL(epl);        //注册修改事件监听        epStatement.addListener((newEvents, oldEvents) -> {            if (newEvents != null) {                System.out.println("~~~~~~~~~~~~~newEvents write~~~~~~~~~~~~~~");                System.out.println("Person's age        is \t" + newEvents[0].get("age"));                System.out.println("Person's children   is \t" + newEvents[0].get("children"));                System.out.println("Person's address    is \t" + newEvents[0].get("address"));            }        });        //默认添加2个事件        Person person = Person.getRandomPerson();        epRuntime.sendEvent(person);        Person randomPerson = Person.getRandomPerson("xiaohulu");        epRuntime.sendEvent(randomPerson);    }    /**     * 当Person类型的事件中name为xiaohulu时，Esper能得到对应的第二个孩子,家里的电话和家庭住址在哪条路上     * Person 应该有以下方法对应     * {@link Person#getChild(int)}     对应的第二个孩子     * {@link Person#getPhones(String)} 家里的电话     */    private void getFiledAndArrayIndexByName() {        final String epl = "select children[1], phones('home'), address.road from " + Person.CLASSNAME + " where name=\"xiaohulu\"";        EPStatement epStatement = epAdministrator.createEPL(epl);        //注册的事件类型 bean        EventType[] eventBeans = epAdministrator.getConfiguration().getEventTypes();        for (EventType eventBean : eventBeans) {            System.out.println(eventBean.getName());        }        //注册修改事件监听        epStatement.addListener((newEvents, oldEvents) -> {            if (newEvents != null) {                System.out.println("~~~~~~~~~~~~~newEvents write~~~~~~~~~~~~~~");                System.out.println("Person's children[1]        is \t" + newEvents[0].get("children[1]"));                System.out.println("Person's phones('home')     is \t" + newEvents[0].get("phones('home')"));                System.out.println("Person's address.road       is \t" + newEvents[0].get("address.road"));            }            if (oldEvents != null) {                System.out.println("~~~~~~~~~~~~~oldEvents write~~~~~~~~~~~~~~");                System.out.println("Person's children[1]        is \t" + oldEvents[0].get("children[1]"));                System.out.println("Person's phones('home')     is \t" + oldEvents[0].get("phones('home')"));                System.out.println("Person's address.road       is \t" + oldEvents[0].get("address.road"));            } else                System.out.println("~~~~~~~~~~~~~oldEvents not find ~~~~~~~~~~~~~~");        });        //启动线程添加事件        new POJO_EventType().run();    }    @Override    public void run() {        int i = 0;        while (i < 100) {            i++;            try {                Thread.sleep(2000);            } catch (InterruptedException e) {                e.printStackTrace();            }            if (i % 3 == 0)                epRuntime.sendEvent(Person.getRandomPerson());            else                epRuntime.sendEvent(Person.getRandomPerson("xiaohulu"));        }    }}