[rules-users] Is it possible to retrieve the collection of Conditions from DecisionTable?

Mark Proctor mproctor at codehaus.org
Mon Oct 3 13:11:51 EDT 2011


On 03/10/2011 18:03, Wolfgang Laun wrote:
> A condition does not have a "name", as you write; values of the cells
> below a condition are (usually) literals.
>
> There is no API for extracting parts of a spreadsheet. You can look at
> the Drools source code (in the packages org.drools.decisiontable and
> .../parser) and write whatever you need - it is not too difficult.
You can also look at drools-verifier, as that shows ho to analyse 
resulting rule fragments.

Mark
>
> -W
>
>
> On 3 October 2011 17:05, RaviCKota<Ravi.Kota at wellsfargo.com>  wrote:
>> Hi All, for suppose I have a DecisionTable like below
>>
>> CONDITION               ACTION
>> -----------------------------
>> COND1                     ACTION1
>> COND2                     ACTION2
>> COND3                     ACTION3
>> -----------------------------
>>
>> This is just a representation of the DecisionTable. So I need to retrieve
>> all the conditions and store them into a Collection like Set. Does Drools
>> provide any such feature.
>>
>> We load the drools as below
>> PackageBuilder builder = new PackageBuilder();
>> builder.addPackageFromDrl(new StringReader(drl)); //drl is the filepath of
>> decisiontable excel
>>
>> // add the package to a rulebase (deploy the rule package).
>> RuleBase ruleBase = RuleBaseFactory.newRuleBase();
>> ruleBase.addPackage(builder.getPackage());
>>
>> I tried to look into api of RuleBase, tried to get the packages, Rules,
>> Consequence, etc etc, but could not find any method, that gets me the
>> condition name.
>>
>> When I tried to do
>> Package[] packages = rulebase.getPackages();
>>
>> for(Package pack : packages){
>> System.out.println("Package Name is : "+pack.getName());
>> Rule[] rules = pack.getRules();
>> for(Rule rule : rules){
>> System.out.println("Rule name is : "+rule.getName());
>>
>> All I get is some representation of each row, but I'm specifically looking
>> for the value of the first column (CONDITION) for each rule.
>>
>> Please offer some guidance here.
>>
>> --
>> View this message in context: http://drools.46999.n3.nabble.com/Is-it-possible-to-retrieve-the-collection-of-Conditions-from-DecisionTable-tp3390026p3390026.html
>> Sent from the Drools: User forum mailing list archive at Nabble.com.
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