Configures the trigger from a xml element.
This function configures the trigger from given xml element. Must be implemented by each implementation of the base class.
An example of xml configuration is specified in the example section. Following configurations are possible:
|Day of month||1-31|
|Day of week||1-7 (7 is Sunday)|
A field may be an asterisk (*) which always stands for 'first-last'. All fields must be filled and contain a valid value.
Ranges of numbers are allowed. Ranges are two numbers separated with a hyphen. The specified range is inclusive. For example, 8-11 for an 'Hours' entry specifies execution at hours 8, 9, 10 and 11.
Lists are allowed. A list is a set of numbers (or ranges) separated by commas. Examples: '1,2,5,9' or '0-4,8-12'.
Step values can be used in conjunction with ranges. Following a range with '/number' specifies skips of the number's value through the range. For example, '0-23/2' can be used in the hours field to specify command execution every other hour (the alternative in the V7 standard is '0,2,4,6,8,10,12,14,16,18,20,22'). Steps are also permitted after an asterisk, so if you want to say 'every two hours', just use '*/2'.
|ArgumentNullException||Thrown if no element was given.|
|Exception||Means that the configuration is invalid. For more information see the exception message.|
<trigger type="uws.Triggers.CronTrigger"> <cron value="10-30/2 12,13,14-18 * * *"/> </trigger>