System.setProperty("drools.dateformat","dd MM yyyy") doesnt works for me in drools 5.6

[nmsund...@gmail.com]

Hi guys,

System.setProperty("drools.dateformat","dd MM yyyy") doesnt works of me in drools 5.6 , which was working fine in drools5.5 .

Do I need to do additional changes in drools 5.6 to make it work .

[nmsund...@gmail.com]

Hi guys,

Below is the stacktrace of the error i faced

"Caused by: java.lang.IllegalArgumentException: Invalid date input format: [08/01/2013] it should follow: [dd-MMM-yyyy]"

[Michael Anstis]

Now I can't say for sure with the limited information you've given, but it looks to me as though a String date value cannot be parsed with the date format you provide.

"Invalid date input format: [08/01/2013]" would expect a date format of dd/MM/yyyy not "dd MM yyyy" as you are setting it.

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[nmsund...@gmail.com]

Hi Michael Anstis,


I need to override default dateformat in drools to "dd MM yyyy" from dd-MMM-yyyy . can you suggest me the approach on that it would be helpful for me .

[Michael Anstis]

Setting the System Property is a perfectly good way to override the date format.

However you need then to be sure every date (String) value adheres to the format you are configuring.

In your example (so far) with a date format of "dd MM yyyy" the (String) value "08/01/2013" cannot be parsed - as the format contains spaces, but the value contains slashes.

To view this discussion on the web visit https://groups.google.com/d/msgid/drools-usage/b8b51a92-7a4a-4b32-9d93-95aa2c5a597f%40googlegroups.com.

[chene...@gmail.com]

Hi, I use 5.6. I also use setProperty override dateformat, and is ok.

Did you sure set the date format before load your rules ?

[nmsund...@gmail.com]

Hi

I had set the dateformat before executing the rules in knowledgebase using System.setProperty("drools.dateformat","dd MM yyyy");.

Do you have any concern on that ? .

please let me know your suggestion on that.

[chene...@gmail.com]

Hi.

It should write before use KnowledgeBuilder add rule content, not just before execute rule.

If not it will throw exception : "Invalid date input format: [01 09 2014] it should follow: [dd-MMM-yyyy]"

By the way , the exception message of your's , "Invalid date input format: [08/01/2013] it should follow: [dd-MMM-yyyy]".

I think you have another mistake, you want data format is "dd MM yyyy", but you write date string "08/01/2013", you should write "08 01 2013" in you rule content.

[nmsund...@gmail.com]

Hi ,

Thanks for the response .

I have used the date "08/01/2013" in my decision table, My assumption is excel takes the default date format as "dd MM yyyy". So only i am overriding the default dateformat property in drools.

The same was working fine for me with drools 5.5.

Please let me know your suggestion and comment on that.

[nmsund...@gmail.com]

Hi guys,

I have solved the problem . Dateformat from decision table loaded using drools 5.5 returns in "dd MM yyyy hh.. " format. whereas Dateformat from decision table loaded using drools 5.6 returning in the format that we specified in Decision table.

Thanks for your help :).