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README
Apache-2.0

批量执行项目

目的

在项目中因为需要实现单独的批量程序,用于夜间跑批,所以实现了这个项目。

设计思想

Pojo类

一个任务(Task)里面含有多个执行单元(Unit)和多个执行任务(Schedule),任务执行时按照执行任务顺序依次执行单元。任务在文件task_demo.xml中 案例中task_demo.xml文件内容如下:

<?xml version="1.0" encoding="UTF-8"?>
<!-- 任务配置文件 -->
<task>
	<!-- 执行单元 -->
	<units>
		<unit  name="unitTest1" describe="测试类1" type="single" executeClass="com.xiaomo.unit.UnitTestOne">
			<properties>
				<property name="commitNum" value="2000" />
			</properties>
		</unit>
		<unit  name="unitTest2" describe="测试类2"  type="single" executeClass="com.xiaomo.unit.UnitTestTwo">
			<properties>
				<property name="commitNum" value="1000" />
			</properties>
		</unit>
		<unit  name="unitTest3" describe="测试类3" type="single"  executeClass="com.xiaomo.unit.UnitTestThree">
			<properties>
				<property name="commitNum" value="30" />
			</properties>
		</unit>
		<unit  name="unitTest4" describe="测试类4"  type="single" executeClass="com.xiaomo.unit.UnitTestFour">
			<properties>
				<property name="commitNum" value="40" />
			</properties>
		</unit>
		
		<unit  name="unitTest5" describe="测试类5"  type="single" executeClass="com.xiaomo.unit.UnitTestFive">
			<properties>
				<property name="commitNum" value="40" />
			</properties>
		</unit>
		
		<unit name="multiUnitTest1"  type="multi" describe="多线程测试类1">
		<subunits>
				<subunit ref="unitTest3" />
				<subunit ref="unitTest4" />
			</subunits>
		</unit>
	</units>
	
	<!-- 执行任务 -->
	<schedules>
		<schedule thisUnit="unitTest1" />
		<schedule thisUnit="unitTest2" />
		<schedule thisUnit="multiUnitTest1"  />
		<schedule thisUnit="unitTest5"  />
	</schedules>
</task>

项目的Pojo类内容如下:

Pojo关联UML图

逻辑类

逻辑类的类时序图如图所示

类时序图

  1. TaskBuilder.java任务构建类

解析task_demo.xml配置文件,将Unit和Schedule构建成Task类。

TaskBuilder.getTaskFromXML(String)
TaskBuilder.getTaskFromXML(File)
TaskBuilder.getTaskFromXML(InputStream)
TaskBuilder.getTaskFromXML(Document)
TaskBuilder.getTaskFromDBString(String)

多个重载方法表示从不同的输入源中读取文件内容

TaskBuilder.getUnits(Element)
TaskBuilder.getSingleUnit(Element)
TaskBuilder.getMultiUnit(Element)
TaskBuilder.getSchedules(Element)
TaskBuilder.phraseMultiUnit2SingleUnit()

从Element中解析出Units和Schedules的实现

2.TaskExecute.java任务执行类 将Task中的Units按照Schedules的顺序来执行。本来准备应用组合设计模式来实现,但是鉴于树的高度只有两层,所以没有使用遍历,而是直接判断。

TaskExecute.start(Task)

执行Task中的Units,如果对应的Unit为SingleUnit类,则单线程执行;如果为MultiUnit类,则多线程执行MultiUnit中的SingleUnits。

TaskExecute.runUnit(Unit)

对不同类型的Unit类有相应的方法

  • 对单线程执行runSingleUnit(unit);
  • 对多线程执行runMultiUnit(unit);

具体执行类

具体执行类的类关系如下图所示:

具体执行类类关系

所有的执行类只需要继承ExecuteClass并实现execute()方法即可。由于ExecuteClass已经继承了Runnable接口并实现的run()方法,所以可以在多线程中进行调用。PS:这就是模板方法设计模式。 配置文件task_demo.xml<unit/>配置的属性<properties/>会以Map形式注入到<unit/>对应的executeClass中去,在实现类中可以直接使用。

使用方式

  1. 按照需要修改task_demo.xml配置文件中内容;
  2. 按照配置文件中配置,实现executeClass类(需要继承ExecuteClass并实现execute()方法),如具体执行类所示;
  3. 运行开始Start即可运行项目。

未来工作

  1. 在该项目基础上实现实际项目是需要的将数据库导出Data文件和将Data文件导入数据库的应用,便于使用。
  2. 将使用注解方式来代替xml配置的方式,便于在实际情况中更好的使用。
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简介

1 顺序执行任务(task任务执行)[可多线程] 2 在该任务基础上,进行一个基本实现: 2.1数据库与文本文件快速导入导出(Data<-->DB) 展开 收起
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