[rules-users] Handling Many Literal Matches Rules

[Wolfgang Laun]

You can do this with a single rule:

rule findHeadTail
when
    ListPair( $pattern : pattern )
    Document( $text : text matches $pattern )
then
    System.out.println( $text );
end

where ListPair is a class maintaining two List<String> fields, heads and tails.
The getter String getPattern should return a value such as ".*(A|B|C)(X|Y|Z).*",
constructed from heads and tails.

-W


On 20 July 2010 15:10, rodih <roded.hess at gmail.com> wrote:
>
> Hi,
> I have the following scenario:
> List 1 of string values: "A", "B", "C"
> List 2 of string values: "X", "Y", "Z"
> Some text that might look like "AFFG DDGT AY FDD" (Important value in the
> text is AY)
>
> I need a rule for every string value from List 1 combined with every value
> from List 2 for example:
>
> rule
> when text matches "AX"
> then
> end rule
>
> rule
> when text matches "AY"
> then
> end rule
>
> rule
> when text matches "AZ"
> then
> end rule
>
> rule
> when text matches "BX"
> then
> end rule
>
>
> rule
> when text matches "BY"
> then
> end rule
> ...
> You get the idea ;-)
>
> The lists might be big (50 entries each) and will be change constantly out
> side the application.
> What is the best approach for this kind of rules?
>
> Thanks,
> Rod
>
>
>
>
>
>
>
>
>
> --
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