I’ve no idea why I said xml rather than drl – still too early in the morning.
It should be there in the documentation, you use $1 and $2 (etc). But in this case why do you want to it’s easier for people to insert the values into two separate columns.
You want something like the following
NAME
CONDITION
CONDITION
f : Fact
value > $param
Value <= $param
Rule Name
Payment More than
Payment max
rule
1
1500
This also has the benefit you can add catchall rules for the top and bottom by leaving the appropriate column empty - eg payment <= 0, or payment > 20000
Thomas
From: rules-users-bounces@lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of john@oa
Sent: 12 September 2011 11:12Subject: Re: [rules-users] Spreadsheet: Rule Compilation error (xxx) cannot be resolved: Keeping running total
Ah Okay,
That kind of makes sense, although I can't seem to find any documentation on how to merge the condition column, i.e. to have to parameters in one column: Tried this to no avail (using the , as the implicit AND)
Payment
value > $param1, value <= $param2
Payment In Range
0, 1500
1500, 2000
2000, 3000
3000, 4000
4000, 5000
5000, 10000
10000, 15000
15000, 20000
20000
On Mon, Sep 12, 2011 at 8:21 AM, Swindells, Thomas [via Drools] <[hidden email]> wrote:
If you dump out the xml it converts the spreadsheet to you can see what the resulting DRL is.
Mantis is right in what the output is – if you don’t merge the condition column you’ll get a drl as below (If there exists a Condition (c1) such that its payment > $param(1) AND there exists a Condition (c2) such that its payment <= $param(2).
If you merge the condition column the constraints apply to the same Condition object with the comma being the implicit and (if there exists a Condition c1 such that its payment > $param(1) AND its payment <= $param(2).
Thomas
From: [hidden email] [mailto:[hidden email]] On Behalf Of john@oa
Sent: 09 September 2011 16:28
To: [hidden email]
Subject: Re: [rules-users] Spreadsheet: Rule Compilation error (xxx) cannot be resolved: Keeping running total
Thanks Manstis
Actually I found that the issue was caused by me having incorrectly placed the "RuleTable" statement in the spreadsheet, I believe the CONDITION's in the columns are by default: AND joined.On Fri, Sep 9, 2011 at 3:57 PM, manstis [via Drools] <[hidden email]> wrote:
Does your "Condition" span the two columns with the payment $param? e.g.
| Condition |
|-----------------+------------------|
|payment > $param | payment <= $param|
|-----------------+------------------|
Otherwise you are creating rules that check the following:-
when
Condition(payment > )
then
...
when
Condition(payment > 1000)
then
...
Whereas you really require:-
when
Condition(payment >0, payment <= 1000)
then
...
etc2011/9/9 john@oa <[hidden email]>
Thanks Iaune
That is really helpful. Yes, I need the ranges to be mutually exclusive, what is the easiest way to do that? Feel a bit cheeky asking another question, but you seem to know what you are talking about! I have tried adding two conditions to enforce the range, but that doesn't seem to work - see below. I still get multiple rules firing. Also can you recommend any good resources for learning all of this, apart from the online documentation? Would you know if any of the Drools books are any good?
payment > $param
payment <= $param
Payment Greater Than
Payment Less Than or Equal To
0
0
1500
1500
2000
2000
3000
3000
4000
On Fri, Sep 9, 2011 at 2:22 PM, laune [via Drools] <[hidden email]> wrote:
The error you get is due to the second condition (application: Application()) not being included in the generated rules. Empty cell means: the column's snippet is not included in the rule.
Since you don't have a constraint for Application() you can employ a trick: remove the column and prefix the text application: Application() to the text in cell C7.
In Rule 1, do you really want to test whether a payment is not greater than zero?
Do you realize that Rules 2 and 3 would both fire for certain payment amounts?
You can update a String field. To concatenate, use
x.setString( x.getString() + "whatever" );
-WOn 9 September 2011 14:08, john@oa <[hidden email]> wrote:
Guvnor: guvnor-5.2.0.Final-tomcat-6.0
Hi
I am a Drools Newbie and I have an integer field called score that I need to
add to when a rule matches in a spreadsheet decision table. i.e. the score
field should hold a running total of all scores that are matched. However,
I can't even update the field in the table. I have attached the spreadsheet
for review. In this spreadsheet I am simply trying to set the score, and
that is failing with:
DScoringTable] Rule Compilation error application cannot be resolved
My goal is to have different decision tables that will all need to update
the same score, and keep a running total of the total score.
Any help very much appreciated! I hope that I am just missing something
obvious.
http://drools.46999.n3.nabble.com/file/n3322713/demo-score-sheet.xls
demo-score-sheet.xls
In future I may wish to also update a String field and keep concatenating to
that field, is this possible?
John
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