ofbiz TemporalExpression 表达式
项目中遇到，这个表达式，不知道怎么写，后来Debug进去兜了一圈，转换日期呀序列呀对象啊什么的。今天说下这个表达式一些规则。<!-- TemporalExpression field details... -->
<!-- The TemporalExpression field meanings depend upon what type of expression it is. The integer
values are typically obtained from the java.util.Calendar field constants. For more
information, see the org.ofbiz.service.calendar.TemporalExpressions.java file.
tempExprTypeId integer1 integer2 date1date2string1 string2
================================== =============== ====== ====== ========== ========
HOUR_RANGE start end
DATE_RANGE startend
TIME_OF_DAY_RANGE interval count start end
DAY_OF_WEEK_RANGE start end
MINUTE_RANGE start end
MONTH_RANGE start end
DAY_OF_MONTH_RANGE start end
DAY_IN_MONTH day occurrence
FREQUENCY freq type freq count start
hh:mm:ss
Day of week: 1 = Sunday, 7 = Saturday
Month: January = 0, Undecimber = 12
Day of month: 1 to 31
Integer: -5 to +5, zero excluded
Second = 13, Minute = 12, Hour = 11, Day = 5, Month = 2, Year = 1
Positive integer, zero excluded
If null, defaults to system date when the expression was retrieved from storage.
Second = 13, Minute = 12, Hour = 11 (default)
Deprecated - do not use
Integer: 0 to 23, midnight = 0
Integer: 0 to 59
-->
Integer1对应规则的类型，Integer2对应Integer1（规则类型）的倍数
示例：现在来定义一个14天后的表达式
<TemporalExpression tempExprId="PM" tempExprTypeId="FREQUENCY" description="Every Other Monday at 5pm" date1="2000-01-03 17:00:00.000" integer1="5" integer2="14"/>
integer1="5" 可以看出规则类型是Day,integer2="14",所以说是14天。
如果要表达一段时间，比如几点-几点，这样的话，上面的表达式就不能满足。
下面是一个星期一到星期五：
<TemporalExpression tempExprId="GOVT_WORK_SCHED" tempExprTypeId="DIFFERENCE" description="Monday to Friday without US Federal Holidays"/>
<TemporalExpressionAssoc fromTempExprId="GOVT_WORK_SCHED" toTempExprId="MON_TO_FRI" exprAssocType="INCLUDE"/>
<TemporalExpressionAssoc fromTempExprId="GOVT_WORK_SCHED" toTempExprId="US_FED_HOLIDAYS" exprAssocType="EXCLUDE"/>
这个东西跟ofbiz Job紧密结合。。。很灵活。。。最近在用这个东西做项目，所以先研究下。后续补上job配置及其东西分享给大家。
关于TemporalExpression的一些例子和介绍
https://cwiki.apache.org/OFBENDUSER/temporal-expressions.html
转载注明出处 Charles，http://juck.iteye.com/
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