com.yomahub.liteflow.builder.el.operator.base

Class OperatorHelper

java.lang.Object

com.yomahub.liteflow.builder.el.operator.base.OperatorHelper

public class OperatorHelper
extends Object

Operator 常用工具类

Since:

2.8.6

Author:

gaibu, luo yi

Constructor Summary

Constructors

Constructor and Description
OperatorHelper()

Method Summary

Modifier and Type	Method and Description
static void	checkItemNotNull(Object[] objects)
static void	checkObjectSizeEq(Object[] objects, int size) 检查参数数量，等于 size
static void	checkObjectSizeEq(Object[] objects, int size1, int size2) 检查参数数量，等于 size1 或 size2
static void	checkObjectSizeEqOne(Object[] objects) 检查参数数量，等于 1
static void	checkObjectSizeEqThree(Object[] objects) 检查参数数量，等于 3
static void	checkObjectSizeEqTwo(Object[] objects) 检查参数数量，等于 2
static void	checkObjectSizeGteTwo(Object[] objects) 检查参数数量，大于等于 2
static void	checkObjectSizeGtZero(Object[] objects) 检查参数数量，大于 0
static void	checkObjMustBeBooleanTypeItem(Object object) 所谓Boolean item，指的是那些最终的结果值为布尔类型的Item 布尔类型的items有，if，while，break类型的Node，以及AndOrCondition以及NotCondition
static void	checkObjMustBeCommonTypeItem(Object object) 检查对象是否为一个正常可执行的对象。
static void	checkObjMustBeForTypeItem(Object object)
static void	checkObjMustBeIteratorTypeItem(Object object)
static void	checkObjMustBeSwitchTypeItem(Object object)
static <T> T	convert(Object object, Class<T> clazz) 转换 object 为指定的类型 如果是Node类型的则进行copy 为什么要进行copy呢？
static <T> T	convert(Object object, Class<T> clazz, String errorMsg) 转换 object 为指定的类型,自定义错误信息 如果是Node类型的则进行copy
static Double	convert2Double(Object object)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

OperatorHelper

public OperatorHelper()

Method Detail

checkObjectSizeGtZero

public static void checkObjectSizeGtZero(Object[] objects)
                                  throws com.ql.util.express.exception.QLException

检查参数数量，大于 0

Parameters:

objects - objects

Throws:

com.ql.util.express.exception.QLException - QLException

checkObjectSizeGteTwo

public static void checkObjectSizeGteTwo(Object[] objects)
                                  throws com.ql.util.express.exception.QLException

检查参数数量，大于等于 2

Parameters:

objects - objects

Throws:

com.ql.util.express.exception.QLException - QLException

checkObjectSizeEqOne

public static void checkObjectSizeEqOne(Object[] objects)
                                 throws com.ql.util.express.exception.QLException

检查参数数量，等于 1

Parameters:

objects - objects

Throws:

com.ql.util.express.exception.QLException - QLException

checkObjectSizeEqTwo

public static void checkObjectSizeEqTwo(Object[] objects)
                                 throws com.ql.util.express.exception.QLException

检查参数数量，等于 2

Parameters:

objects - objects

Throws:

com.ql.util.express.exception.QLException - QLException

checkObjectSizeEqThree

public static void checkObjectSizeEqThree(Object[] objects)
                                   throws com.ql.util.express.exception.QLException

检查参数数量，等于 3

Parameters:

objects - objects

Throws:

com.ql.util.express.exception.QLException - QLException

checkObjectSizeEq

public static void checkObjectSizeEq(Object[] objects,
                                     int size)
                              throws com.ql.util.express.exception.QLException

检查参数数量，等于 size

Parameters:

objects - objects

size - 参数数量

Throws:

com.ql.util.express.exception.QLException - QLException

checkObjectSizeEq

public static void checkObjectSizeEq(Object[] objects,
                                     int size1,
                                     int size2)
                              throws com.ql.util.express.exception.QLException

检查参数数量，等于 size1 或 size2

Parameters:

objects - objects

size1 - 参数数量1

size2 - 参数数量2

Throws:

com.ql.util.express.exception.QLException - QLException

convert

public static <T> T convert(Object object,
                            Class<T> clazz)
                     throws com.ql.util.express.exception.QLException

转换 object 为指定的类型 如果是Node类型的则进行copy 为什么要进行copy呢？因为原先的Node都是存放在FlowBus的NodeMap中的。有些属性在EL中不是全局的，属于当前这个chain的。 所以要进行copy动作

Throws:

com.ql.util.express.exception.QLException

convert2Double

public static Double convert2Double(Object object)
                             throws com.ql.util.express.exception.QLException

Throws:

com.ql.util.express.exception.QLException

convert

public static <T> T convert(Object object,
                            Class<T> clazz,
                            String errorMsg)
                     throws com.ql.util.express.exception.QLException

转换 object 为指定的类型,自定义错误信息 如果是Node类型的则进行copy

Throws:

com.ql.util.express.exception.QLException

checkItemNotNull

public static void checkItemNotNull(Object[] objects)
                             throws com.ql.util.express.exception.QLException

Throws:

com.ql.util.express.exception.QLException

checkObjMustBeCommonTypeItem

public static void checkObjMustBeCommonTypeItem(Object object)
                                         throws Exception

检查对象是否为一个正常可执行的对象。 大部分的Node,Condition,Chain都是正常可执行的对象，这个检查是为了避免THEN(sw,if)类的情况(sw是选择组件，if是条件组件)，这种就不能放在THEN里

Throws:

Exception

checkObjMustBeBooleanTypeItem

public static void checkObjMustBeBooleanTypeItem(Object object)
                                          throws Exception

所谓Boolean item，指的是那些最终的结果值为布尔类型的Item 布尔类型的items有，if，while，break类型的Node，以及AndOrCondition以及NotCondition

Parameters:

object - 检查的对象

Throws:

Exception - 检查过程中抛的错

checkObjMustBeForTypeItem

public static void checkObjMustBeForTypeItem(Object object)
                                      throws Exception

Throws:

Exception

checkObjMustBeIteratorTypeItem

public static void checkObjMustBeIteratorTypeItem(Object object)
                                           throws Exception

Throws:

Exception

checkObjMustBeSwitchTypeItem

public static void checkObjMustBeSwitchTypeItem(Object object)
                                         throws Exception

Throws:

Exception