package com.ql.util.express.example;

import org.junit.Test;

import com.ql.util.express.DefaultContext;
import com.ql.util.express.ExpressRunner;
import com.ql.util.express.IExpressContext;
import com.ql.util.express.example.operator.ApproveOperator;

/**
 * 本例模拟了一个简单的流程处理
 * 用于展示如何定义表达式，方法，并使用上下文变量
 *
 */
public class WorkflowTest {

	/**
	 * 执行一段文本
	 * @throws Exception
	 */
	@Test
	public void testApprove1()throws Exception{
		//定义表达式
		String exp = "如果 (审批通过(经理,金额)){" +
				         "   如果  (金额  大于 5000){ " +
				         "     如果  (审批通过(总监,金额)){" +
				         "        如果  (审批通过(财务,金额)){" +
				         "           报销入账(金额)" +
				         "        }否则  {" +
				         "            打回修改(申请人)" +
				         "        }" +
				         "     }否则 {" +
				         "        打回修改(申请人)" +
				         "     }" +
				         "   }否则  {" +
				         "      如果  (审批通过(财务,金额)){" +
				         "        报销入账(金额)" +
				         "      }否则 {" +
				         "         打回修改(申请人)" +
				         "      }" +
				         "   }" +
				         "}否则 {" +
				         "   打回修改(申请人)" +
				         "}" +
				         "打印(\"完成\")";
    ExpressRunner runner = new ExpressRunner();
		//定义操作符别名
		runner.addOperatorWithAlias("如果", "if",null);
		runner.addOperatorWithAlias("否则", "else",null);
		runner.addOperatorWithAlias("大于", ">",null);
		//
		runner.addFunctionOfServiceMethod("打印", System.out, "println",new String[] { "String" }, null);
		//定义方法
		runner.addFunction("审批通过", new ApproveOperator(1));
		runner.addFunction("报销入账", new ApproveOperator(2));
		runner.addFunction("打回修改", new ApproveOperator(3));
		//设置上下文变量
		IExpressContext<String,Object> expressContext = new DefaultContext<String,Object>();
		expressContext.put("经理", "王经理");
		expressContext.put("总监", "李总监");
		expressContext.put("财务", "张财务");
		expressContext.put("申请人", "小强");
		expressContext.put("金额", new Integer(4000));
		//执行表达式
//		runner.execute(exp, expressContext, null,false, false);
	}

	/**
	 * 通过文件加载表达式
	 * @throws Exception
	 */
	@Test
	public void testApprove2()throws Exception{
		ExpressRunner runner = new ExpressRunner();
		//定义操作符别名
		runner.addOperatorWithAlias("如果", "if",null);
	  runner.addOperatorWithAlias("否则", "else",null);
  	runner.addOperatorWithAlias("大于", ">",null);
		//
		runner.addFunctionOfServiceMethod("打印", System.out, "println",new String[] { "String" }, null);
		//定义方法
		runner.addFunction("审批通过", new ApproveOperator(1));
		runner.addFunction("报销入账", new ApproveOperator(2));
		runner.addFunction("打回修改", new ApproveOperator(3));
		//加载文件
		runner.loadExpress("example/approve1");
		//从指定文件中获取表示式构造指令集
		
		//设置上下文变量
		IExpressContext<String,Object> expressContext = new DefaultContext<String, Object>();
		expressContext.put("经理", "王经理");
		expressContext.put("总监", "李总监");
		expressContext.put("财务", "张财务");
		expressContext.put("申请人", "小强");
		expressContext.put("金额", new Integer(5000));
		
//		runner.executeByExpressName("example/approve1", expressContext, null, false,false,null);
	}
	
	/**
	 * 通过文件加载方法及表达式
	 * @throws Exception
	 */
	@Test
	public void testApprove3()throws Exception{
		ExpressRunner runner = new ExpressRunner();
		//定义操作符别名
		runner.addOperatorWithAlias("如果", "if",null);
	  runner.addOperatorWithAlias("否则", "else",null);
  	runner.addOperatorWithAlias("大于", ">",null);
		//
		runner.addFunctionOfServiceMethod("打印", System.out, "println",new String[] { "String" }, null);		
		//加载文件
		runner.loadExpress("example/approve");
		//设置上下文变量
		IExpressContext<String,Object> expressContext = new DefaultContext<String, Object>();
		expressContext.put("经理", "王经理");
		expressContext.put("总监", "李总监");
		expressContext.put("财务", "张财务");
		expressContext.put("申请人", "小强");
		expressContext.put("金额", new Integer(6000));
		
//		runner.executeByExpressName("example/approve", expressContext, null, false,false,null);
	}
	
	/**
	 * 从不同的文件中加载方法及表达式
	 * @throws Exception
	 */
	@Test
	public void testApprove4()throws Exception{
		ExpressRunner runner = new ExpressRunner();
		//定义操作符别名
		runner.addOperatorWithAlias("如果", "if",null);
	  runner.addOperatorWithAlias("否则", "else",null);
  	runner.addOperatorWithAlias("大于", ">",null);
		//
		runner.addFunctionOfServiceMethod("打印", System.out, "println",new String[] { "String" }, null);
		
		//加载文件
		runner.loadExpress("example/approve1");
		runner.loadExpress("example/approve2");
		//设置上下文变量
		IExpressContext<String,Object> expressContext = new DefaultContext<String, Object>();
		expressContext.put("经理", "王经理");
		expressContext.put("总监", "李总监");
		expressContext.put("财务", "张财务");
		expressContext.put("申请人", "小强");
		expressContext.put("金额", new Integer(7000));
		
//		runner.executeByExpressName("example/approve1", expressContext, null, false,false,null);
	}
	
}