[rules-users] conditional insert of 'exist' or 'not' keywords in decision table s

[Steven Williams]

Hi Vlad,

There is a very basic wiki page on it
(http://wiki.jboss.org/wiki/Wiki.jsp?page=DecisionTableTemplates
).

In terms of the functionality you mention you have your data having
knowledge of the rule templates whereas the current implementation is such
that the data has no knowledge of the templates. You can apply multiple rule
templates to the same data however (as in
ExternalSpreadsheetCompilerIntegrationTest):

        final ExternalSpreadsheetCompiler converter = new
ExternalSpreadsheetCompiler();
        final List listeners = new ArrayList();
        ExternalSheetListener l1 = new ExternalSheetListener(10, 3,
"/templates/test_pricing1.drl");
        listeners.add(l1);
        ExternalSheetListener l2 = new ExternalSheetListener(30, 3,
"/templates/test_pricing2.drl");
        listeners.add(l2);
        converter.compile("/data/ExamplePolicyPricing.xls", InputType.XLS,
listeners);

This example assumes two sets of data in the one sheet, however they could
both have been applied to the same set (ie. the second listener could also
point to row 10, column 3). Would that accomplish what you need?

Steve



On 2/20/07, Olenin, Vladimir (MOH) <Vladimir.Olenin at moh.gov.on.ca > wrote:
>
>  Thanks, Steve. That really seems to do the trick. Are there any wiki
> pages on this new functionality? Or for now one should refer to the source
> code & unit tests?
>
>
>
> I also wonder what other functionality the new templating engine has? Is
> it possible to define different 'types' of rules in the same 'rule' template
> and refer to these types from 'Excel' data fields (eg, have one column per
> rule where you can refer 'rule template XXX' from drl file; this value can
> override some default value for example). If not, how such situations can be
> handled? (ie, when one needs several type of rules driven by the same data?)
>
>
>
> Thanks,
>
>
>
> Vlad
>  ------------------------------
>
> *From:* rules-users-bounces at lists.jboss.org [mailto:
> rules-users-bounces at lists.jboss.org] *On Behalf Of *Steven Williams
> *Sent:* 17 February 2007 04:25
> *To:* Rules Users List
> *Subject:* Re: [rules-users] conditional insert of 'exist' or 'not'
> keywords in decision table s
>
>
>
> Hi Vlad,
>
> With the new decision table handling you could use the following template
> to do it:
>
> Given a table as follows:
>
> exists, 21, 25
>
> , comprehensive
>
> not, 64, 100
>
> exists, comprehensive
>
> the following template does what you want:
>
> template header
> driver[]
> policy[]
>
> package This_is_a_ruleset;
> #generated from Decision Table
> import example.model.Driver;
> import example.model.Policy ;
>
> template "Driver policy"
> driver
> policy
>
> rule "driver policy $row.rowNumber$"
>     when
>         $driver0$
>         Driver(age >= $driver1$, age <= $driver2$)
>         $policy0$
>         Policy(type = "$policy1$")
> then
>     //do smth
> end
> end template
>
> the code to call it was:
>     public void testColumnKeywords() {
>         final ExternalSpreadsheetCompiler converter = new
> ExternalSpreadsheetCompiler();
>         final String drl = converter.compile( "/data/TestWorkbook.xls",
> "/templates/test_keywords.drl",
>                                               InputType.XLS, 1, 1 ); // DT
> starts at Row 1, Column 1
>         System.out.println(drl);
>     }
>
> cheers
> Steve
>
> On 2/17/07, *Olenin, Vladimir (MOH)* < Vladimir.Olenin at moh.gov.on.ca>
> wrote:
>
> Hi,
>
>
>
> I wonder if it's possible to pass some Column keywords as parameters from
> template values, eg:
>
>
>
> Condition
>
> Condition
>
> $1 Driver
>
> $1 Policy
>
> age >= $2, age <= $3
>
> type
>
> exists, 21, 25
>
> , comprehensive
>
> not, 64, 100
>
> exists, comprehensive
>
>
>
> I'd expect the above table would generate two rules like:
>
>
>
> Rule 1
>
> When
>
>             exists Driver (age >= 21, age <= 25)
>
>             Policy(type == "comprehensive")
>
> Then
>
>             // do smth
>
> End
>
>
>
>
>
> Rule 2
>
> When
>
>             not Driver (age >= 64, age <= 100)
>
>             exists Policy (type == "comprehensive")
>
> then
>
>             // do smth
>
> End
>
>
>
>
>
>
>
> The above example is just a mock up derived from one of the examples in
> the documentation to demonstrate the point (meaning, the rules themselves
> might not make sense from business point of view or can be implemented
> differently for this particular case).
>
>
>
> So, any way to achieve this? Whether in current version (3.0.x) or the
> upcoming release (3.2)
>
>
>
> Thanks,
>
>
>
> Vlad
>
>
> _______________________________________________
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> rules-users at lists.jboss.org
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>
>
>
>
> --
> Steven Williams
>
> Supervising Consultant
>
> Object Consulting
> Office: 8615 4500 Mob: 0439 898 668 Fax: 8615 4501
> stevenw at objectconsulting.com.au
> www.objectconsulting.com.au
>
> consulting | development | training | support
> our experience makes the difference
>
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>


-- 
Steven Williams

Supervising Consultant

Object Consulting
Office: 8615 4500 Mob: 0439 898 668 Fax: 8615 4501
stevenw at objectconsulting.com.au
www.objectconsulting.com.au

consulting | development | training | support
our experience makes the difference
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